SBE Computer Hardware HW400c 2 User Guide

HighWire HW400c/2 User Reference Guide Rev 1.0  
___________________HighWire HW400c/2  
User Reference Guide  
M8275, Rev 1.0  
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HighWire HW400c/2 User Reference Guide Rev 1.0  
Revision History  
Revision  
1.0  
Date  
Changes  
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Table of Contents  
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List of Figures  
List of Tables  
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Conventions  
The following conventions are used in this document:  
A # following a signal name, e.g., INTA#, represents an active low signal.  
A / preceding a signal name, e.g., /INTA represents an active low signal.  
0x preceding a number represents a Hexadecimal value.  
A number in “ ” preceded by H represents a Hexadecimal value.  
A number in “ ” preceded by B represents a Binary value.  
A register or bit name that ends with _EN indicates an enable function  
A register or bit name that ends with _N indicates an asserted low function  
Typeface courieris used to designate code and/or terminal input.  
Draws attention to important information related to the nearby text.  
Refers to information about potential hazards to equipment or personnel.  
!
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HighWire HW400c/2 User Reference Guide Rev 1.0  
1 ABOUT THIS MANUAL  
This manual is technical reference for the HighWire HW400c/2 Gigabit Switched  
PTMC Processing Platform for CompactPCI. This manual is intended for those who  
are installing the HW400c/2 into a system.  
The HighWire HW400c/2 User Reference Manual includes the following:  
Introduction and background on the HighWire HW400c/2  
Hardware reference material  
Hardware installation instructions  
Programming information  
Physical characteristics and specifications  
Operating System Software environment and installation  
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HighWire HW400c/2 User Reference Guide Rev 1.0  
2 INTRODUCTION  
The HW400c/2 is a flexible high-performance core processing platform for building  
powerful processor enabled CompactPCI (CPCI) telephony and data communications  
I/O solutions. Advanced features on the HW400c/2 include two PCI Telecom  
Mezzanine Card (PTMC) sites for CT Bus enabled I/O interfaces that are  
interconnected through a high-speed Layer 2 Gigabit Ethernet switch to the dual node  
CompactPCI Packet Switched Backplane (cPSB). The HighWire core architecture  
utilizes the Freescale MPC7447A PowerPC processor and Marvell Discovery™ III  
system controller to provide a powerful computing environment for addressing a  
wide range of communications applications.  
The HW400c/2 is optimized for packet-based switch fabric system architectures and  
is fully compliant with the PICMG 2.16 cPSB specification. The cPSB standard  
provides a switched fabric backplane interconnection using Ethernet technology  
overlaid on the standard CPCI J3 connector. Dual Gigabit Ethernet interfaces are  
provided on the HW400c/2 cPSB interface to support both the high availability dual  
node and reduced cost single node configurations.  
Full CPCI compliance and interoperability are maintained including Hot Swap,  
H.110 CT Bus and rear I/O support.  
2.1 Product Description  
The HW400c/2 is built on SBE’s advanced HighWire core architecture, and features  
the MPC7447A PowerPC processor, Marvell Discovery III system controller, up to  
1GB DDR SDRAM and Disk-on-Chip flash file system storage to meet the  
demanding needs of today’s telecom and datacom applications. Additional developer  
features including a serial console port and a COP emulator port help speed code  
development. The HW400c/2 also fully supports the Intelligent Platform  
Management Interface (IPMI) standard (PICMG 2.9) for system management.  
The two expansion sites accept both CT Bus enabled PTMC modules and standard  
PMC modules. PT2MC modules have access to the on-board local CT Bus and  
timeslot interchange fabric allowing flexible routing of TDM timeslots both between  
the PTMC sites and the H.110 backplane CT Bus. PT5MC modules also include  
Gigabit Ethernet connectivity to platform resources. The HW400c/2 automatically  
detects each module type to provide full mix and match support for using PT2MC,  
PT5MC or PMC modules in either site.  
The 32-bit 33-133 MHz PCI/PCI-X interface supports 3.3V signaling modules with  
full support for both front and rear I/O access per PICMG 2.3 mapping.  
In addition, a 10/100/1000 Ethernet port for system management and application  
flexibility is included through a front panel RJ45 connector on the board.  
Figure 1 shows the block diagram of the HW400c/2.  
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Processor  
Motorola  
MPC7447A  
SDRAM  
SDRAM  
PTMC Site A  
PTMC Site B  
Config #2 or #5  
Config #2 or #5  
I2C  
Config.  
System Controller  
Console  
RJ45  
ROM  
Discovery III  
Enet  
MAC  
CPLD  
GigE or  
Rear I/O  
GigE or  
Rear I/O  
PCI-X TDM  
PCI-X TDM  
Microwire  
Serial  
EEPROM  
Boot  
ROM  
Phy  
Phy  
SRAM  
Disk on  
Chip  
Layer 2  
Ethernet  
Switch  
10/100/  
1000  
Phy  
Enet  
RJ45  
p  
Temp  
Sensors Memory  
Flh  
Flash  
H.110L  
Controller  
S
IPMI  
Controller  
Hot Swap  
Controller  
J1  
J2  
J3  
J4  
J5  
PSB  
H.110  
Rear I/O  
PCI  
PCI-64  
Figure 1. HW400c/2 Block Diagram  
2.2 Unpacking Instructions  
If the carton is damaged when you receive it, request that the carrier's agent be  
present when you unpack and inspect the equipment.  
After unpacking, verify that all items listed in the packing list are present.  
Inspect the equipment for shipping damage.  
Save all packing material for storage or return shipment of the equipment.  
For repairs or replacement of equipment damaged during shipment, contact SBE,  
Inc. to obtain a Return Materials Authorization (RMA) number and further  
shipping instructions.  
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2.3 Handling Procedures  
The HW400c/2 board uses CMOS components that can be easily damaged by static  
electrical discharge. To avoid damage, familiarize yourself with electrostatic  
discharge (ESD) procedures, which include the following precautions:  
The board should be handled only by trained service personnel at an approved  
ESD workstation.  
Refer to ANSI/IPC-A-610 developed by the Institute for Interconnecting and  
Packaging Electronic Circuits (IPC).  
Keep the board in a sealed conductive plastic bag while in transit.  
When installing the board in the field, ground yourself to the system chassis  
before removing the board from the sealed conductive plastic bag (the power  
plug must be installed on the system for this to be effective).  
Any equipment used to work on the board must be grounded. Any person  
handling the board must be grounded.  
Check alignment and polarization of cables and connectors before applying  
power.  
Do not apply external voltages to any devices on the board with power removed  
from the board.  
Do not attempt to straighten any part soldered to the board, as pin breakage or  
internal damage could occur.  
2.4 Hardware Installation of the HW400c/2  
The HW400c/2 is designed for use in a 6U CompactPCI enclosure.  
Be sure to follow safe ESD procedures when handling electronic hardware.  
!
Remove the HW400c/2 from the protective bag.  
Slide the HW400c/2 into an available peripheral board slot in the CompactPCI  
chassis. Check that the board is aligned properly on the card guides.  
Completely insert the board until the top and bottom board ejectors lock into  
place. If chassis power is on the blue hot swap LED will blink and turn off.  
Tighten top and bottom screws to secure the HW400c/2 in place.  
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2.5 Returns/Service  
Before returning any equipment for service, you must obtain a Return Material  
Authorization (RMA) number from SBE:  
TEL: 800-925-2666 (Toll free, USA)  
TEL: +925-355-2000 (Outside of USA)  
FAX: +925-355-2020  
Ship all returns to SBE’s USA service center:  
SBE, Inc.  
4000 Executive Parkway, Suite 200  
San Ramon, CA 94583  
SBE’s Technical Support Department can be reached at 800-444-0990.  
2.6 Operating Environment  
The HW400c/2 is designed to function within the environment shown in Table 1.  
Table 1. HW400c/2 Operating Environment  
Storage temperature  
-40 to +85 C (-40 to +185 °F)  
Operating temperature:  
0 to 55 °C (32 to 131 °F) ambient temperature with a minimum  
of 200 LFM airflow (basic configuration)  
Operating humidity: 10% to 90% non-condensing  
Storage humidity: 5% to 95% non-condensing  
Power requirements: 36.5 Watts max. (estimated, basic configuration)  
Voltages:  
5V +5%/-3%, 3.3V +5%/-3%, 12V ±5% (all required)  
Bring the HW400c/2 board to operating temperature in a non-condensing  
environment. The rate of change in board temperature should not exceed  
2 °C (35.6 °F) per minute.  
!
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2.7 Mean Time Between Failures (MTBF)  
The Mean Time Between Failure (MTBF) of SBE, Inc’s HW400c/2 was  
calculated per Telcordia Technical Reference TR-332 Issue 6, December  
1997.  
The following specific parameters were used:  
Prediction method:  
Method I (Parts count procedure)  
Application conditions:  
Environment:  
Case 1 (<1 hr burn-in, 50% electrical stress)  
Controlled, fixed, ground (mult. factor = 1.0)  
Component quality factors: Quality level II parts (level I on Rs, Cs and LEDs)  
Ambient temperature:  
50 C  
Calculated MTBF:  
>150,000 hours (not including installed PMC or PTMC modules)  
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2.8 Regulatory Agency Certifications  
The HW400c/2 complies with the requirements listed below.  
2.8.1 Safety  
IEC60950  
IEC60950  
UL60950  
International product safety  
pending  
pending  
pending  
pending  
Certified Body (CB) Report  
2.8.2 US and Canadian Emissions  
FCC Part 15 Class B  
Industry Canada CS-003  
pending  
pending  
2.8.3 European Emissions and Immunity  
EN 50082-1  
pending  
pending  
EN 300386-2 (supercedes EN55022)  
to include EN61000-4-6: 10kHz-80MHz, 80%AM 1kHz  
CE Mark approval is included.  
2.9 Agency Compliance  
The HW400c/2 is designed to comply with the following agency requirements.  
NEBS  
VCC  
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2.10 Physical Properties  
The Highwire 400c/2 is compliant with the mechanical specifications of PCMIG 2.0.  
Table 2 lists the physical dimensions of the HW400c/2 product. Figure 2 shows the  
physical profile of the HW400c/2 board.  
Table 2. HW400c/2 Physical Dimensions  
Length: 9.2 inches (233.68 mm)  
Width: 6.3 inches (160.02 mm)  
Maximum component height (front): 0.540 inches (13.72 mm)  
Maximum component height (back): 0.079 inches (2 mm)  
Board thickness: 0.062 inches (1.57 mm)  
Figure 2. The HW400c/2 PTMC Processing Platform  
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2.10.1 HW400c/2 Front Panel  
The HW400c/2 CompactPCI front panel has custom cut outs with the appropriate  
thickness to accommodate two PTMC bezels (with EMC gaskets), two RJ-45  
connectors, blue Hot Swap LED, green power LED, and status LEDs. Figure 3  
below shows an illustration of the front panel.  
Figure 3. HW400c/2 Front Panel  
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2.10.2 Part number and serial number  
All boards are marked with the manufacturing part number and assembly revision.  
This is marked on a label and affixed to the top of the board.  
All boards are serialized physically with a bar code serial number label and affixed to  
the secondary side of the board.  
2.10.3 Bus Keying  
Keying on the HW400c/2 is used to prevent damage to the card and/or the backplane.  
There are two keying systems used on the HW400c/2, CompactPCI and PTMC.  
2.10.3.1 Compact PCI  
As defined in PICMG 2.10, the HW400c/2 has a Strawberry Red key, RAL # 3018,  
installed in J4 signifying the existence of the H.110 Computer Telephony bus on J4.  
There is no key installed in J1, signifying universal PCI signaling levels.  
2.10.3.2 PTMC Site  
The PTMC Sites are capable of 3.3v signaling only. Therefore cards with 5v only IO  
signals will be prevented from installation by the presence of key posts installed on  
the HW400c/2. The key posts are located at each PTMC site, with the location  
defined in IEEE 1386.  
The key posts must not be removed, or damage could result from installation of an  
incompatible PMC or PTMC card with 5v only IO signals.  
!
The host PCI bus (CompactPCI) and local PCI bus (PTMC Sites) are independent of one another, and  
may operate at different speeds and bus widths (see Sections 3.2.3 and 3.2.4).  
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2.10.4 Power Requirements  
The power requirements of the HW400c/2 are defined for two environments:  
1. All voltages are required.  
2. The CompactPCI VIO has no effect on the local PCI bus VIO (PTMC sites), which is fixed at 3.3v.  
Table 3. HW400c/2 power requirements VIO = 5.0V  
3.3V  
5.0V  
12V  
Total  
Current (A) Current (A) Current (A) Power (W)  
HW400c/2 alone  
2.26  
4.54  
6.135  
2.8  
0.05  
0.92  
0.92  
1.89  
38.73  
40.02  
PTMC site A capacity  
PTMC site B capacity  
HW400c/2 with PTMC A&B  
4.54  
2.8  
40.02  
11.34  
11.735  
118.78  
Table 4. HW400c/2 power requirements VIO = 3.3V  
3.3V  
5.0V  
12V  
Total  
Current (A) Current (A) Current (A) Power (W)  
HW400c/2 alone  
5.04  
4.54  
4.3  
2.8  
2.8  
9.9  
0.05  
0.92  
0.92  
1.89  
38.73  
40.02  
PTMC site A capacity  
PTMC site B capacity  
HW400c/2 with PTMC A&B  
4.54  
40.02  
14.12  
118.78  
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2.10.5 Switches  
The HW400c/2 contains single switch that is necessary for normal operation. The  
switch is an integral part of the lower ejector handle inside the front panel, and is  
used along with the blue LED (see Figure 3) and the Linear Systems LTC1644, for  
hot swap. The switch is connected to the PC board at J10 near the lower ejector  
handle.  
For debugging purposes an optional reset/NMI toggle switch and cable is available  
2.10.6 Product Configurations  
The HW400c/2 can be manufactured with several configuration options. Specific  
options include processor type and speed, memory amount, and CompactPCI  
connector configuration. See Table 6, Table 16, and Section 3.2.3 for related  
information.  
Table 5. HW400c/2 Order time options  
Standard Configuration  
Options  
CPU Speed  
DDR RAM  
H.110 CT bus  
1.0 GHz  
1.4 Ghz, 1.7Ghz  
512MB, 1GB  
256MB  
Installed  
CompactPCI bus Installed  
Options or modifications are available upon request. Please call SBE Sales for option  
availability, and/or modification requests.  
Build options have significant impact on power consumption.  
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3 FUNCTIONAL BLOCKS  
The HW400c/2 has six major functional blocks – the PowerPC processor, system  
controller, CT Bus interface, Ethernet switch, PTMC expansion sites, and the IPMI  
controller. The following sections describe these functional blocks in greater detail.  
Additional features such as the connector pin outs and JTAG development support  
are also described.  
3.1 PowerPC Processor  
The standard configuration for the HW400c/2 includes the Freescale MPC7447A  
PowerPC Processor running at 1000 MHz (1 GHz) with a corresponding system bus  
speed of 166 MHz. There are two additional processor variants available for the  
board, which utilize the Freescale MPC7448 PowerPC Processor with a 200 MHz  
system bus speed.  
The operating frequency and power consumption for each processor variant is shown  
Table 6. HW400c/2 Processor Options  
Operating  
Frequency  
(Maximum)  
System Bus  
Frequency  
(Maximum)  
Core Power  
Consumption  
(Typical/Maximum)  
Processor Type  
MPC7447A  
MPC7448  
1.0 GHz  
1.4 GHz  
1.7 GHz  
166 MHz  
200 MHz  
200 MHz  
8.0 / 11.5 W  
8.0 / 15.9 W  
21 / 29.8 W  
MPC7448  
3.1.1 MPC744X Development/Debug Support  
The HW400c/2 provides external access to the MPC744X processor COP port, reset  
and interrupt signals at headers J6, Jx6, J7, J8, and J9 (See Figure 2). A console port  
is also provided on the front panel of the board though an RJ45 modular connector  
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3.1.2 Console port  
The front panel console port is connected through the MV64462 via a Linear Systems  
LTC1386 EIA-562 (low voltage EIA-232) transceiver. The console port is an RJ45  
modular connector mounted on the front panel using three wire (Tx, Rx, GND) EIA-  
232 at 9600 baud, 8N1 (8 bits, No parity, 1 stop bit). Figure 4 shows the console port  
pin out.  
Pin 1  
n/c  
n/c  
1
2
3
4
5
6
7
8
Tx  
Rx  
CONSOLE  
Shield  
Figure 4. Console port pin out  
3.1.3 Pushbutton Reset / Interrupt  
An optional external pushbutton reset is provided as a 6-pin header (part of J8, J9, see  
Figure 2, Figure 5, and Table 7) on the board that accepts the standard SBE  
developer’s debug cable with toggle switch. Contact SBE Technical Support for  
additional details on obtaining a developer’s debug cable.  
The same toggle switch is also used to generate a non-maskable interrupt (NMI), by  
pushing it in the opposite direction. The pushbutton interrupt signal is connected to a  
GPIO port of the Marvell Discovery III System Controller, which can be configured  
to route it to the MPC744X if desired. See Table 11 for the GPIO port number.  
Indicates location of Pin 1  
J9  
J8  
RST  
O NMI  
O
This row (even numbered pins)  
reserved for factory use  
I2C2 I2C2  
(-) SDA SCL  
Figure 5. J8, J9 Reset/NMI header  
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Table 7 describes the pin out of J8 and J9. Some of the pins listed are for Factory use  
only.  
Table 7. J8 and J9 pin out  
Header Pin Label  
Usage  
J8  
1
2
3
4
5
O
N/C. The “o” indicates pin one  
SCL TWSI IPMB SCL, for Factory use only  
none N/C. Just below the “J8” header title.  
SDA TWSI IPMB SDA, for Factory use only  
NMI Ground. Used in conjunction with J9, 1, holds  
microprocessor Non Maskable Interrupt (NMI) active.  
When used with optional reset/NMI cable toggles NMI.  
6
1
(-)  
O
Ground. Used with TWSI cable, for Factory use only  
Non Maskable Interrupt (NMI). The “o” indicates pin  
one. Used in conjunction with J8, 5, holds  
J9  
microprocessor Non Maskable Interrupt (NMI) active.  
2
3
none N/C  
none Reset to the microprocessor. Used in conjunction with  
J9, 5, holds microprocessor in reset. When used with  
optional reset/NMI cable toggles reset line.  
I2C2 Select I2C2, Used with J9-6 to select I2C3 mode. For  
Factory use only.  
RST Ground. In conjunction with J9-3 to hold microprocessor  
in reset.  
I2C2 Ground. Used with J9-4 to select I2C3 mode. For  
Factory use only.  
4
5
6
Bottom row of J8 and J9 reserved for Factory use only.  
Figure 6. J8 and J9 with optional Reset/NMI cable  
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Figure 7. Optional Reset/NMI switch  
3.1.4 COP/JTAG Port  
A 16-pin header (J6, see Figure 2, and Figure 8) and a 6-pin header (JX6) are  
provided on the HW400c/2 board for connecting to the processor’s COP (Common  
On-chip Processor) port for factory development purposes. The J6 header can also  
be used to access the JTAG chain for the entire board.  
The COP/JTAG port uses 3.3V signaling.  
Figure 8. COP/JTAG Pinout  
3.1.5 Special Purpose Jumper Block  
Jumper block J7, located along the top of the board, is used for diagnostic and other  
special purposes. Under normal operating circumstances these jumpers will remain  
uninstalled. The IGNP jumper is necessary when in standalone test mode (no PCI  
bus is present, or no PCI Slot One Master installed). See Figure 9 and Table 8, below.  
Pin 1  
Figure 9. J7 Special purpose jumper block  
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Table 8. J7 pin functions  
3.1.5.1 Jumper Label Usage  
Pins  
1-2  
PWR  
Forces board “late power” to switch “ON” at power-up  
3-4  
IGNP Forces board to operate as if no Host PCI bus is  
present  
5-6  
FAC  
a) Sets “FACT” bit in BSR register for use by software  
b) Enables writes to Microwire EEPROM lower  
addresses  
7-8  
LPCI  
IRST  
Limits Local PCI bus (PTMC sites) to 100MHz  
maximum frequency  
Holds IPMI Controller (U92) in reset state. (Required  
when programming IPMI EEPROMs on-board via the  
System Controller TWSI interface, see Table 7).  
Enables writes to the I2C Configuration ROM (U30)  
9-10  
11-12  
13-14  
15-16  
IWE  
ZJT  
Connects only IPMI Controller (U92) to JTAG/COP  
header (J6/JX6)  
TRST Forces JTAG Reset signal inactive (Required when  
using Altera ByteBlaster)  
3.2 MV64462 System Controller  
The HW400c/2 uses the Marvell Discovery III (MV64462) PowerPC System  
Controller, which acts as the interface between the processor, memory, PCI and  
interfaced to the MV64462.  
3.2.1 System Bus  
The system bus interface between the Freescale MPC744X processor and Marvell  
MV64462 system controller is a 64-bit bus, operating at a speed of 166 MHz or 200  
MHz depending on the processor system bus frequency (see Table 6).  
3.2.2 Dual Data Rate (DDR) SDRAM  
One 200-pin SODIMM module is used for the DDR SDRAM. The module is located  
under one of the PTMC mezzanine cards using a low-profile SODIMM socket.  
The HW400c/2 supports DDR SDRAM densities of 256 MB, 512 MB, and 1 GB as  
order time options. Memory speeds of up to 200 MHz are supported for MPC7448  
processors. The memory speed is the same as the processor bus speed, and therefore  
the memory speed for the standard MPC7447A (1 GHz) configuration is 166 MHz  
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3.2.3 Host PCI Bus  
The Marvell Discovery III (MV64462) host PCI bus (PCI bus 0) provides an  
interface between the processor and CompactPCI host, as well as between the PTMC  
sites and the CompactPCI host. The MV64462 device acts as a PCI-to-PCI bridge  
between the two PCI buses.  
The HW400c/2 supports a 64-bit-wide bus operating at 33 or 66 MHz. PCI-X  
operation at 66 MHz is supported; however 100/133 MHz operation is not supported.  
3.2.3.1 Operation Without CompactPCI Bus  
The HW400c/2 supports the PICMG 2.16 R1.0 specification’s requirement that a  
PICMG 2.16 compliant node card must have the ability to operate without the  
presence of the CPCI bus. CPCI connectors J1 and J2 are present as they provide  
power and geographic addressing information; however pin B6 of J1 is redefined as  
signal PCI_PRSNT# in PICMG 2.16. When the PCI bus is present on the backplane,  
this pin is defined as GND. If the PCI bus is not present on the backplane, then it  
must leave this pin floating (there is a 10K pull-up on the node).  
The state of the PCI_PRSNT# signal is sensed at power-up (or hot-swap) and, if  
inactive, the backplane PCI signals are ignored, enabling the board to boot up  
normally. The primary PCI signals from the MV64462 are tri-stated in this case, and  
the precharge voltage is switched from 1.0V to VIO (3.3V or 5V) to prevent floating  
signals. The PCI Status Register (PSR) provides the status of the PCI bus (see  
Section 4.2.10). The software must read this register to determine whether the PCI  
bus is present or not and configure the board appropriately.  
The HW400c/2 can also boot up without the slot 1 card in a CompactPCI chassis. A  
jumper enables this feature, regardless of the state of the PCI_PRSNT# pin on J1.  
This jumper is labeled IGNP (part of J7, see Section 3.1.5), and when installed, the  
PCI reset and clock signals for MV64462 PCI bus 0 are generated internally.  
If a Slot 1 card is present and the IGNP jumper is installed, the HW400c/2 will not be  
able to communicate with the Slot 1 card.  
!
3.2.4 Local PCI Bus  
The Marvell Discovery III (MV64462) local PCI bus (PCI bus 1) provides an  
interface between the processor and the two PTMC sites. The local PCI bus is 32-  
bits wide and operates in PCI mode at 33-66 MHz, or PCI-X mode at 66-133 MHz.  
The PCI-X 133 MHz speed is allowed when only one PTMC module is installed, and  
it must be installed at Site B. If two PCI-X capable modules are installed, or a PCI-X  
capable module is installed at Site A, the bus frequency is automatically forced to  
100 MHz.  
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If a PCI-X 133 card is installed in Site B, it may be forced to 100 MHz, by installing the LPCI jumper at  
J7 (see Section 3.1.5).  
Module presence is detected by the state of the BUSMODE1 pin. Interrupts from  
either of the two sites are fed through the MV64462 GPIO pins, and can be routed to  
either the on-board processor or through the host PCI bus to the CompactPCI host  
processor. The local PCI bus is independent of the host PCI bus, that is, the two  
buses can operate at different speeds and bus widths.  
The local PCI Bus I/O voltage is connected to 3.3 volts only. Therefore, PTMC  
modules with 5-volt only I/O signals cannot be used on the HW400c/2, and are  
prevented from being installed by a voltage key residing at each site (see Section  
!
3.2.5 Serial EEPROM  
The HW400c/2 includes a 4 K-bit non-volatile EEPROM for storing small items such  
as IP addresses and board serial numbers. This device is the Atmel AT93C66A,  
which is organized in a 256 x 16-bit format. The EEPROM is accessed through  
CPLD registers, which control a read/write state machine within the CPLD. See  
Sections 4.2.25 to 4.2.28 for details on accessing the EEPROM.  
addresses (0x00-0x0F) are written by SBE when the boards are manufactured, and  
must not be modified. Space is reserved in the next 32 addresses (0x10-0x2F) for a  
total of 16 IP Addresses, beginning with the board IP address and the Gateway IP  
address. U-boot use the remaining addresses (0x30-0xFF) for boot parameters.  
Boot software must read the MAC address from the serial EEPROM and subsequently assign the value  
to the MV64462 Ethernet Port 0 registers. In Table 9, the MAC address is represented by the sample  
number 00:A0:D6:12:34:56.  
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Table 9. Microwire EEPROM Contents, Factory Area  
Word  
Address  
Typical  
Value  
Typical  
Value  
Bits 15-8 (MSB)  
Payload Length (words)  
CRC32 Byte 2  
Bits 7-0 (LSB)  
0x00  
0x01  
0x20  
Format  
0x03  
0xCC  
CRC32 for address 0x00  
and 0x02-0x0F  
0xCC  
0x02  
0x03  
0x04  
0x05  
CRC32 Byte 4  
Subsystem Vendor ID  
Subsystem ID  
0xCC  
0x76  
0x01  
0xA0  
CRC32 Byte 3  
Subsystem Vendor ID  
Subsystem ID  
0xCC  
0x11  
0x0D  
0x00  
SBE MAC Address  
Header Byte 2  
SBE MAC Address  
Header Byte 1  
0x06  
0x07  
Board Serial Number  
(BCD) Byte 1  
0x12  
0x56  
SBE MAC Address  
Header Byte 3  
0xD6  
0x34  
Board Serial Number  
(BCD) Byte 3  
Board Serial Number  
(BCD) Byte 2  
0x08  
0x09  
0x0A  
0x0B  
0x0C  
0x0D  
0x0E  
0x0F  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
0x01  
0x40  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
0x43  
0xD5  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
Shaded areas indicate addresses reserved for programming by SBE at the time the boards are  
manufactured.  
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Table 10. Microwire EEPROM Contents, Uboot Area  
Word  
Address  
Typical  
Typical  
Value  
Bits 15-8 (MSB)  
Value  
0xA8  
0x0A  
0xA8  
0x0A  
0xA8  
0x0A  
Bits 7-0 (LSB)  
0x10  
0x11  
0x12  
0x13  
0x14  
0x15  
Board IP Address byte 1  
Board IP Address byte 3  
Gateway IP Address byte 1  
Gateway IP Address byte 3  
Server IP Address byte 1  
Server IP Address byte 3  
Board IP Address byte 0  
Board IP Address byte 2  
Gateway IP Address byte 0  
Gateway IP Address byte 2  
Server IP Address byte 0  
Server IP Address byte 2  
0xC0  
0x01  
0xC0  
0x01  
0xC0  
0x01  
0x16 –  
0x2D  
Reserved for other  
IP Addresses  
Reserved for other  
IP Addresses  
0xFF  
0xFF  
0x2E  
0x2F  
0x30  
0x31  
0x32  
0x33  
0x34  
Netmask byte 1  
Netmask byte 3  
Baud byte 1  
Baud byte 3  
Baud byte 1  
CRC32 byte 3  
CRC32 byte 1  
Reserved  
0xFF  
0x00  
0x36  
0x30  
0x30  
N/A  
Netmask byte 0  
Netmask byte 2  
Baud byte 0  
0xFF  
0xFF  
0x39  
0x30  
0x00  
N/A  
Baud byte 2  
Baud byte 0  
CRC32 byte 2  
CRC32 byte 0  
N/A  
N/A  
0x35 –  
0x3A  
0xFF  
Reserved  
0xFF  
0x3B  
0x3C  
0x3D  
0x3E  
0x3F  
Load Address byte 1  
Load Address byte 3  
Load Address byte 5  
Load Address byte 7  
Boot Delay byte 1  
0xFF  
0xFF  
0xFF  
0xFF  
0x00  
N/A  
Load Address byte 0  
Load Address byte 2  
Load Address byte 4  
Load Address byte 6  
Boot Delay byte 0  
0xFF  
0xFF  
0xFF  
0xFF  
0x35  
N/A  
0x40 –  
0x5F  
Boot Filename (32 bytes)  
Boot Filename (32 bytes)  
0x60 –  
0xAF  
Boot Arguments (80 bytes)  
Boot Command (80 bytes)  
N/A  
N/A  
Boot Arguments (80 bytes)  
Boot Command (80 bytes)  
N/A  
N/A  
0xB0 –  
0xFF  
Addresses are typically modified by the user through the U-boot software.  
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3.2.6 MV64462 Ethernet Interface  
The MV64462 contains an Ethernet MAC, which provides a MAC-to-MAC  
connection to port 7 of the on-board Broadcom BMC5388 layer 2 Ethernet switch  
(see Table 14). The connection is made via the RGMII ports on each device. The  
operating speed of the RGMII port is 125 MHz.  
3.2.7 MV64462 Device Interface  
The Discovery III Device Interface connects the following functional elements:  
SRAM Device  
Boot PROM  
Disk-on-Chip  
CT Bus Controller  
CPLD  
The device bus is a 32-bit interface with a default operating frequency of 100 MHz.  
The following sections provide additional detail for each of the functional elements.  
3.2.7.1 SRAM Device  
The HW400c/2 includes a 512 KB SRAM device with a 32-bit wide data bus  
necessary for the processor to boot. The device supports burst reads and writes.  
3.2.7.2 Boot PROM  
A 4 Mbit (512 KB) Boot PROM device is supported in a PLCC socket (XU4) that is  
located underneath PTMC site B. The device allows for easy upgrade of boot and/or  
diagnostic code. The socket also accepts most EPROM emulator cables. Burst  
reads/writes to the boot ROM are not supported.  
3.2.7.3 Disk-on-Chip  
A Disk-on-Chip (DoC) flash file system device is used on the HW400c/2 for data  
storage. DoC is a high-density flash device manufactured by M-Systems  
Incorporated, with a data bus width of 16 bits. The 128 MB device is standard on the  
HW400c/2, with the option of populating other devices for OEM configurations.  
Burst reads/writes to the DoC are not possible due to the maximum input clock  
frequency of the device (33 MHz) being slower than the 100 MHz device bus clock.  
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3.2.7.4 CT Bus Controller  
The Agere T8110L CT bus controller on the HW400c/2 board is accessed and  
programmed via the device bus. It also has a data bus width of 16 bits. Burst  
reads/writes are not supported by the T8110L. See Section 3.3 for details about the  
CT Bus Controller functions.  
3.2.7.5 CPLD  
The Complex Programmable Logic Device (CPLD) registers are also accessed via  
the device bus, using an 8-bit data bus width. Miscellaneous signals such as resets  
and mezzanine card selection logic are monitored and controlled by the CPLD  
about CPLD register functions.  
3.2.8 Watchdog Timer  
The Marvell MV64462 Discovery III system controller contains an internal 32-bit  
Watchdog Timer that can be configured as a source of interrupt to either the  
MPC744X processor or to the CompactPCI host through the PCI interrupt output.  
The IPMI controller can also detect a Watchdog timeout by checking the appropriate  
3.2.9 Reset  
The following types of reset are available:  
Power–on reset. Resets the entire board during hot-swap or power-up.  
Optional external pushbutton reset. See Section 3.2.9 for details.  
Host PCI reset. This reset is routed through the Early Power CPLD, allowing  
the host on the CompactPCI bus to reset all devices on the HW400c/2 board.  
Individual device reset. The PTMC sites, the T8110L, the Ethernet Switch  
and PHYs and the Disk on Chip can all be individually reset via the CPLD  
register bits (see Section 4.2.16)  
Software reset (warm reset). Initiated by writing to the CPLD’s Warm Reset  
Register (WRR, see Section 4.2.18), resets the CPU, System Controller, and  
all on board devices. Host PCI reset signal is not affected by warm reset.  
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3.2.10 Multi-Purpose Port (MPP) Usage  
The MV64462 Discovery III includes a 32-bit Multi-Purpose Port (MPP) that can be  
used for a variety of possible functions. The HW400c/2 board uses the MPP for the  
serial Console Port signals (front-panel RJ-45), REQ and GNT signals for the local  
PCI bus, I2C EEPROM activity indicator (used during boot*), and as a detector for  
the various on-board interrupt sources.  
Interrupts from the PTMC sites, the T8110L, the Ethernet PHYs, the Disk-on-Chip,  
and the optional external pushbutton are connected individually to GPIO ports of the  
Discovery III, which can then be configured to route them either to the MPC744X, or  
to the host through the PCI interrupt output.  
Table 11 lists the MV64462 MPP pin connections on the HW400c/2 board.  
Table 11. MV64462 Multi-Purpose Port Assignments  
MPP  
Pin  
MPP0  
MPP1  
MPP2  
MPP3  
MPP4  
MPP5  
Multiplex  
Number  
0x2  
0x2  
0x1  
0x1  
0x1  
0x1  
0x0  
0x4  
0x0  
0x0  
0x4  
0x0  
0x0  
0x0  
0x0  
0x0  
0x0  
0x0  
0x0  
0x0  
0x0  
0x0  
0x0  
In/Out of  
Active  
Pin Function  
S0_TXD  
Disco III High/Low Signal Description  
Out  
In  
Out  
In  
Out  
In  
Out  
Out  
In  
In  
Out  
In  
In  
In  
In  
In  
In  
In  
In  
In  
In  
In  
High  
High  
Low  
Low  
Low  
Low  
Low  
High  
Low  
Low  
Low  
Low  
Low  
Low  
Low  
Low  
Low  
Low  
Low  
High  
High  
Low  
Low  
Low  
Low  
Low  
Console Port (RJ-45) TXD  
Console Port (RJ-45) RXD  
GNT to PTMC Site A  
REQ from PTMC Site A  
GNT to PTMC Site B  
REQ from PTMC Site B  
Disk-on-Chip Lock  
S0_RXD  
PCI1_GNTn[0]  
PCI1_REQn[0]  
PCI1_GNTn[1]  
PCI1_REQn[1]  
GPIO6  
INITACT  
GPIO14  
GPIO15  
WD_NMIn  
GPIO17  
GPIO18  
GPIO19  
GPIO20  
GPIO21  
GPIO22  
GPIO23  
GPIO24  
GPIO25  
GPIO26  
GPIO27  
GPIO28  
MPP6  
MPP7  
I2C EEPROM Active*  
Pushbutton Interrupt  
MPP14  
MPP15  
MPP16  
MPP17  
MPP18  
MPP19  
MPP20  
MPP21  
MPP22  
MPP23  
MPP24  
MPP25  
MPP26  
MPP27  
MPP28  
MPP29  
MPP30  
MPP31  
CPU Temp Sensor TCRIT  
Watchdog Signal to IPMI  
INTA from PTMC site A  
INTB from PTMC site A  
INTC from PTMC site A  
INTD from PTMC site A  
INTA from PTMC site B  
INTB from PTMC site B  
INTC from PTMC site B  
INTD from PTMC site B  
T8110L Clock Error  
T8110L System Error  
PHY A Interrupt  
PHY B Interrupt  
PHY R Interrupt (RJ-45)  
Disk-on-Chip Interrupt  
Disk-on-Chip Busy Signal  
In  
In  
In  
In  
0x0  
0x0  
0x0  
GPIO29  
GPIO30  
GPIO31  
* By default, the HW400c/2 uses the I2C EEPROM during boot. The EEPROM  
must contain the appropriate register setting to configure MPP7 as the INITACT  
output. This signal is then pulled low after the EEPROM loads to initiate the  
processor boot  
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3.3 Computer Telephony Bus Controller  
The HW400c/2 includes the Agere T8110L CT Bus Controller to control TDM bus  
switching between the backplane (CompactPCI J4 connector) and the local bus,  
which is connected to the JN3 connector on each of the two PTMC sites.  
3.3.1 H.110 Interface (T8110L)  
The Agere T8110L is a H.110 CT Bus controller that provides a complete interface  
between the backplane H.110 CT bus and local PTMC CT bus through a dynamically  
controllable switching fabric. The H.110 interface connects to all 32 bi-directional  
TDM streams of the backplane H.110 bus via the CPCI J4 connector using the  
PICMG 2.5 R1.0 standard mapping. It can access any of the 4096 time slots carried  
on the H.110 bus.  
The local CT bus, with 32 bi-directional TDM connections, can be programmed for  
data rates of 2.048Mb/s, 4.092Mb/s or 8.192Mb/s. The local CT bus of the T8110L  
is connected to each of the PTMC sites via the JN3 connectors.  
The PTMC configuration 2 (PT2MC) type modules only support 20 CT bus streams, while PTMC  
configuration 5 (PT5MC) modules support all 32 CT bus streams.  
3.3.2 T8110L Clocking Interface (T8110L)  
The T8110L LSC [3:0] output pins are connected to the PTMC Output Clock Drivers  
located in the CPLD. The LSC[3:0] pins are programmed as shown in Table 6.  
Table 12. LSC Assignments  
LSC output  
LSC0  
Signal Assignment  
CT_C8  
LSC1  
CT Frame  
LSC2  
NETREF1  
LSC3  
NETREF2  
Figure 10 shows the local CT Bus clocking signals and how they are routed.  
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Figure 10. Local CT Bus Clocking Block Diagram  
Control for the local “A” and “B” bus drivers is provided by bits 4, 5, 6, and 7 in the  
Clock Select Register (CSR). Refer to Section 4.2.1 for further details. Figure 11  
shows the implementation.  
Figure 11. Local CT Bus Clock Generation  
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The T8110L can be programmed such that its local frame reference (LREF [3:2])  
inputs are used to generate all of the TDM bus clocks and syncs. The T8110L Local  
Clock Reference Inputs have been assigned to the PTMC JN3 H.110 clock pins as  
Table 13. LREF [3:2] Assignments  
LREF input  
LREF2  
Assigned to Clock  
PT_NETREF1  
LREF3  
PT_NETREF2  
3.3.3 Operation in Non-H.110 Backplane  
The default HW400c/2 configuration has the H.110 interface installed. However, in  
the event that the HW400c/2 board is used in a PICMG 2.16 chassis that does not  
have an H.110 bus or the H.110 interface is not installed, the CT_EN pin on J4 (pin  
C23) is not grounded. The state of the CT_EN pin is stored in bit 7 of the CPLD  
BSR register for access by software (see 4.2.2). If H.110 is not present, the H.110  
interface should not be enabled.  
Even if the H.110 bus is not available on the CompactPCI backplane, the local CT  
Bus connections are still valid and therefore PTMC Site A and PTMC Site B can  
communicate via the CT Bus that is local to the HW400c/2 board.  
3.4 Layer 2 Ethernet Switch  
The Broadcom BCM5388 Layer 2 Ethernet switch connects to the various devices on  
the HW400c/2 board. The BCM5388 has four Gigabit Ethernet ports with integral  
MAC/PHYs, and four additional Gigabit MACs with external RGMII connections.  
Three of the additional MACs are connected to Broadcom BCM5461S external  
PHYs, and one is connected directly to the MV64462 MAC port as shown in Table  
Table 14. Layer 2 Switch Port Assignments  
Switch Port Device or Port  
PHY Address  
N/A  
Connection Type  
MAC-to-MAC RGMII  
1 External PHY  
1 Integral PHY  
1 External PHY  
1 Integral PHY  
1 External PHY  
1 Integral PHY  
1 Integral PHY  
7
6
2
4
3
5
0
1
MV64462 System Controller  
Front Panel RJ-45  
00110  
N/A  
00100  
N/A  
00101  
N/A  
N/A  
PT5MC Slot A, Link Port A  
PT5MC Slot A, Link Port B  
PT5MC Slot B, Link Port A  
PT5MC Slot B, Link Port B  
PSB Link Port A  
PSB Link Port B  
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3.4.1 Switch Registers Initialization and Monitoring  
The switch is initialized and its registers polled by utilizing its SPI bus interface.  
This interface is connected through the CPLD. For a description of how to access the  
SPI interface, please refer to Section 4.4.  
3.4.2 MV64462 System Controller Ethernet Interface  
The Marvell MV64462 System Controller on the HW400c/2 can be accessed via the  
BCM5388 Ethernet switch. The connection speed must be set to 1000 Mbps and is a  
MAC-to-MAC connection with the clock sourced from the Ethernet switch. The  
transmitter signals from the switch are connected to the receiver signals on the  
system controller, and vice-versa for a direct MAC-to-MAC connection.  
3.4.3 Front Panel (RJ-45) Ethernet Interface  
The HW400c/2 board includes a fully shielded RJ-45 (with integrated transformer  
and two green LEDs) located at the front panel that provides an Ethernet LAN  
interface. The port is auto-negotiating and auto-sensing, and operates at 10/100/1000  
Mbps. The left LED (looking at the port) indicates Link/Activity/Speed and the right  
LED indicates collision detection (See Figure 12).  
The Link/Activity/Speed LED indication is as follows:  
solid green when the network link is up;  
blinking at 3 Hz for 10 Mb/s Tx or Rx;  
blinking at 6 Hz for 100 Mb/s Tx or Rx;  
and blinking at 12 Hz for 1000 Mb/s Tx or Rx.  
Link/activity/speed  
Collision  
Ethernet  
Figure 12. Front panel Ethernet RJ-45 LEDs  
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3.4.4 PT5MC Ethernet Ports  
Each of the two PT5MC sites on the HW400c/2 have two 10/100/1000 Mbps ports  
connected to the Ethernet switch. The signals conform to PICMG ECN 2.15-1.0-  
001, using the first 24 pins of the respective JN4 connectors.  
The JN4 Ethernet connections are switched to the CompactPCI J3 connector using a  
FET switch specially designed for signals such as Gigabit Ethernet. The PTID bits  
control the FET, when a PT5MC module is installed in either mezzanine card site.  
Should a non-PT5MC module be installed in one of the sites, the JN4 signals for that  
site are routed to the CompactPCI J5 connector as user I/O according to PICMG 2.3  
R1.0.  
JN4 pins 5, 6, 11, 12, 17, 18, 23 and 24 are switched to ground through discrete FETs  
at the JN4 connector when a PT5MC module is installed. This has the effect of  
grounding the respective connections at the CompactPCI J5 connector as well, so  
caution must be exercised not to damage circuitry on an installed RTM.  
!
!
PT5MC cards with network connections through Pn4, must be transformer coupled or  
the link to the layer 2 switch will not be established.  
3.4.5 CompactPCI Packet Switch Backplane (cPSB) Ports  
Two of the 10/100/1000BaseT ports of the Ethernet switch, Port 0 and Port 1, are  
routed to the CompactPCI J3 connector as specified for Packet Switching Backplane  
(PSB) in PICMG 2.16. See Table 14 and Table 15. The HW400c/2 is configured as a  
PCIG 2.16 Node card.  
3.4.5.1 CompactPCI Connector J3, power and ground  
The HW400c/2 uses some of the J3 pins, designated by the PICMG 2.16 as User I/O,  
as power and ground pins in order to provide enough current to handle some of the  
more power hungry PTMC cards. These power pins cannot be disconnected. This can  
damage to some Rear Transition Modules (RTM). The SBE assigned power and  
ground pins are shown in bold in Table 15.  
!
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Table 15. Compact PCI connector J3 pin out  
A
+5.0v  
+5.0v  
B
+5.0v  
+12v  
N/C  
C
N/C  
N/C  
N/C  
D
N/C  
N/C  
E
N/C  
N/C  
1
2
3
N/C  
N/C  
N/C  
4
5
LED Clock  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
6
7
LED Data  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
GND  
N/C  
8
9
+3.3v  
+3.3v  
+3.3v  
N/C  
N/C  
N/C  
GND  
LPb DB+  
LPb DA+  
LPa DB+  
LPa DA+  
GND  
N/C  
N/C  
N/C  
GND  
N/C  
GND  
N/C  
N/C  
GND  
N/C  
N/C  
GND  
GND  
GND  
GND  
GND  
GND  
GND  
N/C  
N/C  
N/C  
N/C  
N/C  
GND  
N/C  
N/C  
N/C  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
N/C  
N/C  
N/C  
GND  
LPb DB-  
LPb DA-  
LPa DB-  
LPa DA-  
GND  
GND  
LPb DD+  
LPb DC+  
LPa DD+  
LPa DC+  
GND  
GND  
LPb DD-  
LPb DC-  
LPa DD-  
LPa DC-  
GND  
3.4.6 On-board Ethernet Indicator LEDs  
The HW400c/2 includes eight on-board LEDs for monitoring the status of the various  
Ethernet ports. The LEDs are labeled L0-L8 and are located near CompactPCI  
connector J5.  
The BCM5388 has a serial LED interface, from which the status of all eight ports can  
be extracted. The serial LED signal is routed to the CPLD, which contains a state  
machine that decodes the LED states for each port. The eight status LEDs on the top  
edge of the HW400c/2 board can be configured to show the status for all eight  
Ethernet ports. Each status LED gives the status for its corresponding port in the  
Link/Activity/Speed format. The CPLD LED registers control the selection of  
Ethernet status, boot status, or general debug modes for the eight LEDs.  
The serial LED interface signals are also routed to the RTM through CompactPCI  
connector J3.  
LEDMODE settings on the BCM5388 are hardwired to “101” (see Serial LED Interface section in the  
BCM5388 datasheet).  
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The Link/Activity/Speed LED indication is as follows:  
solid green when the network link is up  
blinking at 3 Hz for 10 Mb/s Tx or Rx;  
blinking at 6 Hz for 100 Mb/s Tx or Rx;  
blinking at 12 Hz for 1000 Mb/s Tx or Rx.  
An optional front panel 2-high LED is provided as a status indicator for the Ethernet  
ports. The optional LEDs are shown as LEDs C and D in Figure 3, and by default are  
not present. The left LED indicates Link/Activity/Speed and the right LED indicates  
Collision detection for the selected port. A port is selected by setting the appropriate  
CPLD bit. The default selection (when present) is the Marvell MV64462 System  
Controller MAC.  
See Section 4.2 for details on setting the LED modes.  
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HighWire HW400c/2 User Reference Guide Rev 1.0  
3.5 Mezzanine Card Sites  
The HW400c/2 board supports I/O expansion using either one or two industry-  
standard PTMC and/or PMC modules. This section provides technical details for  
these expansion sites.  
3.5.1 PT5MC Type Mezzanine Cards  
The PT5MC mezzanine card support includes connection to the local PCI bus (32-bit,  
33-133 MHz PCI or PCI-X), the local 32 TDM stream H.110 bus, two Gigabit  
Ethernet ports, and 31 pins of User I/O connected to the CompactPCI J5 backplane  
connector.  
PT5MC cards with network connections through Pn4, must be transformer coupled or  
the link to the layer 2 switch will not be established.  
!
3.5.2 PT2MC Type Mezzanine Cards  
The PT2MC mezzanine card support includes connection to the local PCI bus (32-bit,  
33-133 MHz PCI or PCI-X), the local 20 TDM stream H.110 bus, and 55 pins of  
User I/O connected to the CompactPCI J5 backplane connector. RMII signals are not  
supported, therefore these lines cannot be used by the PT2MC cards.  
3.5.3 PMC Type Mezzanine Cards  
The PMC mezzanine card support includes connection to the local PCI bus (32-bit,  
33-133 MHz PCI or PCI-X), and 55 pins of User I/O connected to the CompactPCI  
J5 backplane connector.  
PMC cards have specified Jn3 as user defined I/O or 64 bit PCI. However, on the HW400c/2, these lines  
are assigned only to the CT bus and RGMII bus, so when a PMC card is installed the signals on Jn3 are  
tri-stated (see Table 17).  
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3.5.4 Mezzanine Card Power  
Each of the two mezzanine card sites on the HW400c/2 is allotted a portion of the  
total power budget for the board. For the standard version, the mezzanine power  
budget is 16.2 Watts for each slot, while the optional high-power version allows 26.4  
Watts for each slot. The power budget is divided between the 3.3V, 5V, and 12V  
power rails as shown in Table 16.  
Table 16. Mezzanine Card Power Budget  
Power (per site)  
5V power 12V power  
Mezzanine Card  
Total Power  
(per site)  
HW400c/2  
Version  
3.3V power  
(Per slot)  
(Per slot)  
(Per slot)  
Standard  
without J4  
16.2 Watts  
29.4 Watts  
26.4 Watts  
10 Watts  
15 Watts  
5 Watts  
1.2 Watts  
Standard  
with J4  
12 Watts  
7.5 Watts  
2.4 Watts  
2.4 Watts  
Optional High  
Power with J4  
16.5 Watts  
The standard version with additional power supplied from the CompactPCI J4  
connector yields the highest power rating for the mezzanine card slots, because that  
version has a lower power processor than the optional high-power version.  
3.5.5 PTMC/PMC Connector Summary  
Table 17 summarizes the mezzanine card connections for each supported type. Both  
sites A and B support the same array of connections. Connector pin outs are shown in  
Table 17. PTMC/PMC Connector Summary  
Mezzanine  
Card Type  
JN1/JN2  
JN3  
JN4  
PCI or  
PCI-X  
PMC  
Not Used (tri-stated)  
55 Pins User I/O  
55 Pins User I/O  
PCI or  
PCI-X  
Local CT Bus  
(20-bit)  
PT2MC  
PT5MC  
PCI or  
PCI-X  
Local CT Bus  
(32-bit)  
2 LAN Ports  
31 Pins User I/O  
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3.5.6 PTMC Jn1 and Jn2 PCI Connectors  
Communication using the local PCI bus is done across two PTMC/PMC connectors,  
JN1 and JN2. Table 18 shows the 32-bit PCI connector pin assignment for JN1 and  
JN2 on the HW400c/2 as defined by the PMC specification IEEE P1386.1.  
Table 18. PTMC Jn1 and Jn2 Connector Pin Assignments  
Pn1 32-Bit PCI  
Pn2 32-Bit PCI  
Pin  
#
Pin  
#
Pin  
#
Pin  
#
Signal Name  
Signal Name  
Signal Name  
Signal Name  
1
TCK  
-12V  
2
1
+12V  
TRST#  
2
3
Ground  
INTB#  
INTA#  
INTC#  
+5V  
4
3
TMS  
TDO  
4
5
6
5
TDI  
Ground  
6
7
BUSMODE1#  
INTD#  
8
7
Ground  
PCI-RSVD*  
BUSMODE2#  
RST#  
PCI-RSVD*  
PCI-RSVD*  
+3.3V  
8
9
PCI-RSVD*  
3.3Vaux  
Ground  
GNT#  
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
42  
44  
46  
48  
50  
52  
54  
56  
58  
60  
62  
64  
9
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
42  
44  
46  
48  
50  
52  
54  
56  
58  
60  
62  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
41  
43  
45  
47  
49  
51  
53  
55  
57  
59  
61  
63  
Ground  
CLK  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
41  
43  
45  
47  
49  
51  
53  
55  
57  
59  
61  
63  
BUSMODE3#  
BUSMODE4#  
Ground  
Ground  
REQ#  
+3.3V  
+5V  
PME#  
V (I/O)  
AD[28]  
AD[25]  
Ground  
AD[22]  
AD[19]  
V (I/O)  
FRAME#  
Ground  
DEVSEL#  
Ground  
PCI-RSDV*  
PAR  
AD[31]  
AD[27]  
Ground  
C/BE[3]#  
AD[21]  
+5V  
AD[30]  
Ground  
AD[24]  
IDSEL  
AD[29]  
AD[26]  
+3.3V  
AD[23]  
+3.3V  
AD[20]  
AD[18]  
AD[16]  
Ground  
TRDY#  
Ground  
PERR#  
+3.3V  
Ground  
AD[17]  
Ground  
IRDY#  
+5V  
C/BE[2]#  
PMC-RSVD  
+3.3V  
STOP#  
LOCK#  
PCI-RSVD*  
Ground  
AD[15]  
AD[11]  
+5V  
Ground  
SERR#  
C/BE[1]#  
AD[14]  
M66EN  
AD[08]  
AD[07]  
+3.3V  
Ground  
V (I/O)  
AD[12]  
AD[09]  
Ground  
AD[06]  
AD[04]  
V (I/O)  
AD[02]  
AD[00]  
Ground  
AD[13]  
AD[10]  
+3.3V  
C/BE[0]#  
AD[05]  
Ground  
AD[03]  
AD[01]  
+5V  
PMC-RSVD  
PMC-RSVD  
Ground  
PMC-RSVD  
PMC-RSVD  
Ground  
ACK64#  
Ground  
PMC-RSVD  
PMC-RSVD  
+3.3V  
REQ64#  
PMC-RSVD  
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3.5.7 PTMC Jn3 CT Bus Connector  
Table 19 shows the PTMC Pn3 CT Bus connector pin assignment for the HW400c/2  
for both Configuration #2 (PT2MC) and Configuration #5 (PT5MC). The signal  
definitions for Pn3 are per the PICMG 2.15 specification.  
Table 19. PTMC Configuration #2/#5 Pn3 Connector Pin Assignment  
Pn3 PT2MC  
Pn3 PT5MC  
Pin  
#
Pin  
#
Pin  
#
Pin  
#
Signal Name  
Signal Name  
Signal Name  
Signal Name  
1
Hi Z  
Ground  
STX (N/C)  
SRX (N/C)  
Ground  
Hi Z  
2
1
LCT D26  
Ground  
Ground  
2
3
Ground  
Hi Z  
4
3
STX (N/C)  
SRX (N/C)  
Ground  
4
5
6
5
LCT D24  
LCT D22  
PTID2  
6
7
Hi Z  
8
7
8
9
PTID2  
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
42  
44  
46  
48  
50  
52  
54  
56  
58  
60  
62  
64  
9
LCT D31  
LCT D29  
Ground  
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
42  
44  
46  
48  
50  
52  
54  
56  
58  
60  
62  
64  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
41  
43  
45  
47  
49  
51  
53  
55  
57  
59  
61  
63  
PTGNDZ  
Hi Z  
Hi Z  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
41  
43  
45  
47  
49  
51  
53  
55  
57  
59  
61  
63  
PTGNDZ  
LCT D20  
Ground  
Ground  
Hi Z  
Ground  
LCT FA  
LCT FB  
PTID0  
LCT D27  
LCT D25  
Ground  
Hi Z  
LCT FA  
LCT FB  
PTID0  
Ground  
Hi Z  
LCT D23  
LCT D21  
Ground  
PTGNDZ  
LCT C8A  
Ground  
LCT D18  
LCT D16  
Ground  
LCT D14  
LCT D12  
PTENB#  
PTGNDZ  
LCT C8B  
Ground  
LCT D10  
LCT D8  
Ground  
LCT D6  
LCT D4  
PTID1  
Hi Z  
PTGNDZ  
LCT C8A  
Ground  
Ground  
LCT D19  
LCT D17  
Ground  
NETREF2  
Hi Z  
LCT D19  
LCT D17  
Ground  
LCT D18  
LCT D16  
Ground  
NETREF2  
LCT D30  
Ground  
LCT D14  
LCT D12  
PTENB#  
PTGNDZ  
LCT C8B  
Ground  
Ground  
Hi Z  
LCT D28  
NETREF2  
Ground  
NETREF1  
Ground  
LCT D15  
LCT D13  
LCT D11  
LCT D9  
LCT D7  
Ground  
LCT D5  
LCT D3  
Ground  
LCT D1  
LCT D15  
LCT D13  
LCT D11  
LCT D9  
LCT D7  
Ground  
LCT D10  
LCT D8  
Ground  
LCT D6  
LCT D4  
PTID1  
LCT D5  
LCT D3  
Ground  
LCT D2  
LCT D0  
Ground  
LCT D2  
LCT D0  
Ground  
LCT D1  
For PT2MC cards, the PT2MC MII signals are tri-stated (Hi Z), as they are hard wired to the CTbus for  
PT5MC use.  
PTMC Serial Port signals (STX and SRX) are not connected on the HW400c/2.  
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3.5.8 PTMC Jn4 LAN/User I/O Connector  
connector pin assignment for the HW400c/2 for both Configuration #2 (PT2MC User  
I/O only) and Configuration #5 (PT5MC LAN and User I/O).  
3.5.8.1 PTMC Site A Jn4  
This table shows the connections from PTMC Site A Jn4, to the Compact PCI  
connector J5 and, for PT5MC, the signals for the Ethernet ports, Link Ports A and B.  
LPa (Link Port A) and LPb (Link Port B) for PTMC Site A go to the Ethernet Switch ports 2 and 4  
respectively. See Table 14.  
PT5MC cards with network connections through Pn4, must be transformer coupled or  
the link to the layer 2 switch will not be established.  
!
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Table 20. PTMC Site A Configuration #2/#5 Pn4 Connector Pin Assignment  
Pn4 PT2MC  
Pn4 PT5MC  
Pin  
#
Pin  
#
Pin  
#
Pin  
#
Signal Name  
Signal Name  
Signal Name  
Signal Name  
1
cPCI J5 E22  
cPCI J5 C22  
cPCI J5 A22  
cPCI J5 D21  
cPCI J5 B21  
cPCI J5 E20  
cPCI J5 C20  
cPCI J5 A20  
cPCI J5 D19  
cPCI J5 B19  
cPCI J5 E18  
cPCI J5 C18  
cPCI J5 A18  
cPCI J5 D17  
cPCI J5 B17  
cPCI J5 E16  
cPCI J5 C16  
cPCI J5 A16  
cPCI J5 D15  
cPCI J5 B15  
cPCI J5 E14  
cPCI J5 C14  
cPCI J5 A14  
cPCI J5 D13  
cPCI J5 B13  
cPCI J5 E12  
cPCI J5 C12  
cPCI J5 A12  
N/C  
cPCI J5 D22  
cPCI J5 B22  
cPCI J5 E21  
cPCI J5 C21  
cPCI J5 A21  
cPCI J5 D20  
cPCI J5 B20  
cPCI J5 E19  
cPCI J5 C19  
cPCI J5 A19  
cPCI J5 D18  
cPCI J5 B18  
cPCI J5 E17  
cPCI J5 C17  
cPCI J5 A17  
cPCI J5 D16  
cPCI J5 B16  
cPCI J5 E15  
cPCI J5 C15  
cPCI J5 A15  
cPCI J5 D14  
cPCI J5 B14  
cPCI J5 E13  
cPCI J5 C13  
cPCI J5 A13  
cPCI J5 D12  
cPCI J5 B12  
N/C  
2
1
LPa DA+  
LPa DA-  
LPa DC+  
LPa DC-  
Ground  
2
3
4
3
4
5
6
5
Ground  
6
7
8
7
LPa DB+  
LPa DB-  
LPa DD+  
LPa DD-  
Ground  
8
9
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
42  
44  
46  
48  
50  
52  
54  
56  
58  
60  
62  
64  
9
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
42  
44  
46  
48  
50  
52  
54  
56  
58  
60  
62  
64  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
41  
43  
45  
47  
49  
51  
53  
55  
57  
59  
61  
63  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
41  
43  
45  
47  
49  
51  
53  
55  
57  
59  
61  
63  
Ground  
LPb DA+  
LPb DA-  
LPb DC+  
LPb DC-  
Ground  
Ground  
LPb DB+  
LPb DB-  
LPb DD+  
LPb DD-  
Ground  
Ground  
cPCI J5 A18  
cPCI J5 D17  
cPCI J5 B17  
cPCI J5 E16  
cPCI J5 C16  
cPCI J5 A16  
cPCI J5 D15  
cPCI J5 B15  
cPCI J5 E14  
cPCI J5 C14  
cPCI J5 A14  
cPCI J5 D13  
cPCI J5 B13  
cPCI J5 E12  
cPCI J5 C12  
cPCI J5 A12  
N/C  
cPCI J5 E17  
cPCI J5 C17  
cPCI J5 A17  
cPCI J5 D16  
cPCI J5 B16  
cPCI J5 E15  
cPCI J5 C15  
cPCI J5 A15  
cPCI J5 D14  
cPCI J5 B14  
cPCI J5 E13  
cPCI J5 C13  
cPCI J5 A13  
cPCI J5 D12  
cPCI J5 B12  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
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HighWire HW400c/2 User Reference Guide Rev 1.0  
3.5.8.2 PTMC Site B Pn4  
This table shows the connections from PTMC Site B Jn4 to the Compact PCI  
connector J5 and, for PT5MC, the signals for the Ethernet ports, Link Ports A and B.  
LPa (Link Port A) and LPb (Link Port B) for PTMC Site A go to the Ethernet Switch ports 3 and 5  
respectively. See Table 14.  
PT5MC cards with network connections through Pn4, must be transformer coupled or  
!
the link to the layer 2 switch will not be established.  
Table 21. PTMC Site B Configuration #2/#5 Pn4 Connector Pin Assignment  
Pn4 PT2MC  
Pn4 PT5MC  
Pin  
#
Pin  
#
Pin  
#
Pin  
#
Signal Name  
Signal Name  
Signal Name  
Signal Name  
1
cPCI J5 E11  
cPCI J5 C11  
cPCI J5 A11  
cPCI J5 D10  
cPCI J5 B10  
cPCI J5 E9  
cPCI J5 C9  
cPCI J5 A9  
cPCI J5 D8  
cPCI J5 B8  
cPCI J5 E7  
cPCI J5 C7  
cPCI J5 A7  
cPCI J5 D6  
cPCI J5 B6  
cPCI J5 E5  
cPCI J5 C5  
cPCI J5 A5  
cPCI J5 D4  
cPCI J5 B4  
cPCI J5 E3  
cPCI J5 C3  
cPCI J5 A3  
cPCI J5 D2  
cPCI J5 B2  
cPCI J5 E1  
cPCI J5 C1  
CPCIJ5 A1  
N/C  
cPCI J5 D11  
cPCI J5 B11  
cPCI J5 E10  
cPCI J5 C10  
cPCI J5 A10  
cPCI J5 D9  
cPCI J5 B9  
cPCI J5 E8  
cPCI J5 C8  
cPCI J5 A8  
cPCI J5 D7  
cPCI J5 B7  
cPCI J5 E6  
cPCI J5 C6  
cPCI J5 A6  
cPCI J5 D5  
cPCI J5 B5  
cPCI J5 E4  
cPCI J5 C4  
cPCI J5 A4  
cPCI J5 D3  
cPCI J5 B3  
cPCI J5 E2  
cPCI J5 C2  
cPCI J5 A2  
cPCI J5 D1  
cPCI J5 B1  
N/C  
2
1
LPa DA+  
LPa DA-  
Ground  
LPa DC+  
LPa DC-  
Ground  
2
3
4
3
4
5
6
5
6
7
8
7
LPa DB+  
LPa DB-  
Ground  
LPa DD+  
LPa DD-  
Ground  
8
9
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
42  
44  
46  
48  
50  
52  
54  
56  
58  
60  
62  
64  
9
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
42  
44  
46  
48  
50  
52  
54  
56  
58  
60  
62  
64  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
41  
43  
45  
47  
49  
51  
53  
55  
57  
59  
61  
63  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
41  
43  
45  
47  
49  
51  
53  
55  
57  
59  
61  
63  
LPb DA+  
LPb DA-  
Ground  
LPb DC+  
LPb DC-  
Ground  
LPb DB+  
LPb DB-  
Ground  
LPb DD+  
LPb DD-  
Ground  
cPCI J5 A7  
cPCI J5 D6  
cPCI J5 B6  
cPCI J5 E5  
cPCI J5 C5  
cPCI J5 A5  
cPCI J5 D4  
cPCI J5 B4  
cPCI J5 E3  
cPCI J5 C3  
cPCI J5 A3  
cPCI J5 D2  
cPCI J5 B2  
cPCI J5 E1  
cPCI J5 C1  
cPCI J5 A1  
N/C  
cPCI J5 E6  
cPCI J5 C6  
cPCI J5 A6  
cPCI J5 D5  
cPCI J5 B5  
cPCI J5 E4  
cPCI J5 C4  
cPCI J5 A4  
cPCI J5 D3  
cPCI J5 B3  
cPCI J5 E2  
cPCI J5 C2  
cPCI J5 A2  
cPCI J5 D1  
cPCI J5 B1  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
N/C  
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3.5.9 PTMC Site Voltage Keying  
Voltage key posts are installed at each PTMC site in accordance with IEEE 1386. See  
Section 2.10.3.  
The HW400c/2 local PCI bus I/O voltage is 3.3 volts only. Therefore, PTMC and  
PMC modules with 5 volt only I/O signals cannot be used on the HW400c/2  
board, and are prevented from being installed by a key post residing at each site.  
!
3.6 IPMI System Management  
The HW400c/2 board includes an IPMI controller that interfaces to the System  
Management Bus (SMB) as defined by the PICMG 2.9 specification. The IPMI  
information is only accessible through an IPMI Shelf Manager, and is used to  
monitor and report the health of the HW400c/2.  
An IPMI Shelf manager may not be present in the system, and IPMI may, in fact, not even have power.  
In either case, the IPMI circuitry on board is for monitoring purposes only and, if disabled or not used,  
has no affect the normal operation of the HW400c/2.  
3.6.1 IPMI Controller  
The IPMI controller on the HW400c/2 is the QLogic Zircon PM with board-specific  
firmware. The Zircon PM complies with PICMG hot-swap requirements.  
The Zircon PM communicates with the System Management device (residing on the  
slot 0 or other card) through its I2C Port 0, connected through the CompactPCI J1  
connector. It also connects to the Geographical Address bits from the CompactPCI  
J2 or J4 connector for reading the physical slot address. Figure 13 shows the major  
functions of the Zircon PM controller. Table 22 lists the GPIO port functions.  
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Figure 13. IPMI Block Diagram  
Table 22. GPIO Port Assignments for IPMI  
GPIO Port  
GPIO_00  
GPIO_01  
GPIO_07  
GPIO_12  
GPIO_13  
I/O  
Input  
Description  
/PWRON monitor (active low)  
HEALTHY monitor (active high)  
Blue LED control (low = on, high = off)  
Watchdog Timer Expired (active low)  
Board Reset control (active low)  
Input  
Output  
Input  
Output  
Ejector Latch monitor, L_STAT  
(low = closed, high = open)  
GPIO_14  
Input  
GPIO_15 – GPIO_19  
GPIO_20 – GPIO_23  
Inputs  
Inputs  
Geographical Address bits 4 – 0  
Boot Status bits 3 – 0  
3.6.2 Temperature and Voltage Monitor  
IPMI functions implemented on the HW400c/2 include board temperature sensors  
TS0 and TS1 connected to I2C Port 1 on the Zircon PM. The 1.1V (MPC744X core  
voltage), 2.5V, 3.3V, 5V and other supply voltages are connected to A/D input ports  
on the Zircon PM through precision voltage-divider networks. These connections  
(see Table 23 and Table 24) allow remote monitoring of the temperatures and  
voltages on the HW400c/2 by a system management device (shelf manager).  
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Table 23. Voltage Monitor A/D Port Assignments for IPMI  
Supply Voltage Monitor  
A/D Port  
5-Volt  
3.3-Volt  
A2D1  
A2D2  
A2D3  
A2D4  
A2D5  
1.1-Volt (CPU core)  
1.5-Volt (System controller core)  
2.5-Volt (SDRAM)  
Table 24. HW400c/2 Temperature Sensor Locations  
Device  
Location  
I2C Port 1 Address  
MV64462 System  
Controller  
TS0 (U84)  
TS1 (U83)  
0
1
CPU Internal Temperature  
3.6.3 Hot Swap Ejector Latch Detection  
The IPMI controller has the capability to read the state of the hot swap ejector switch,  
otherwise known as the L_STAT signal. This signal is connected to a GPIO pin on  
L_STAT = 1 indicates it is open, and that the board is about to be removed  
3.6.4 Blue (Hot Swap) LED Control  
The IPMI controller has the capability to turn on the Blue Front Panel LED. A GPIO  
pin on the Zircon PM is connected through the CPLD to the LED (see Table 22).  
3.6.5 Boot Status Monitor  
There are four (4) register bits in the CPLD reserved for indicating the boot status  
level from the processor. These bits are connected to the Zircon PM GPIO port as  
shown in Table 22. The power-up default value of these bits is “0000.” All other  
values are reserved for SBE use.  
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3.6.6 Board Reset via IPMI  
The IPMI controller has the capability to issue a board reset. A GPIO port on the  
Zircon PM (see Table 22) is connected to the CPLD and OR’ed with the /P_RST  
reset signal from the Host CompactPCI bus. A standard IPMI command is issued to  
initiate the board reset. IPMI commands are issued through an IPMI Shelf Manager  
3.6.7 IPMI System Power Supply  
The Vsm supply pin on the CompactPCI J1 connector delivers 5V to the IPMI  
circuit. The PICMG 2.9 specification sets the maximum current drawn from the Vsm  
pin at 100mA. The Zircon PM, together with all its supporting devices, draws about  
60mA maximum continuous current. However, due to power-up inrush or a short  
circuit, the current could exceed 100mA. Therefore, a current-limiting switch is  
connected at the Vsm pin.  
3.6.8 IPMI Firmware EEPROMs  
There are two Atmel AT24C512 (64 KB) EEPROMs connected to I2C Port 2 on the  
Zircon PM. The EEPROM at U90 is for storage of the runtime firmware. The  
EEPROM at U87 is for boot code, as well as storage of information related to Field  
Replaceable Units (FRU), such as serial number. These assignments are shown in  
The EEPROMs can be pre-programmed (default), or they can be programmed on-  
board via the MV64462 Two-Wire Serial Interface (TWSI), See Table 7.  
The IPMI EEPROMs pre-programmed at the factory should always be used.  
Programming on board is usually unnecessary, and is recommended only for expert  
users, as misconfiguration could result in unpredictable behavior.  
!
When programming the EEPROMs on-board, the Zircon PM must be held in the reset state by installing  
the IRST jumper on the J7 header (see Table 8). Table 25 shows the I2C addresses of each EEPROM.  
Table 25. Firmware EEPROM Addresses  
EEPROM Function  
Boot/FRU (U87)  
Runtime (U90)  
EEPROM Type  
AT24C512  
I2C Port 2 Address  
0
1
AT24C512  
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3.6.9 Zircon PM Reset  
At power-up, the Zircon PM is held in reset state until the 3.3V supply voltage is  
within tolerance.  
3.6.10 IMPI Get Device ID  
The response to the IPMI command “GetDeviceID” from the Shelf Manager is of the  
standard format. See Appendix A for the complete response format to  
GetDeviceID.” Unique Product ID numbers (byte offsets 11 and 12) are assigned as  
The three least significant bits of the Product ID numbers for the HW400c/2 board  
are always “111” to maintain continuity with the earlier HW400 Product ID  
assignment scheme. The LSB value is also reflected in the Extended Type Register  
(ETR) in the CPLD register bank. See Section 4.2.11 for details.  
Table 26. Product ID number  
HW400c/2 Product Features  
Product ID number  
(MSB, LSB)  
Standard Version  
0x00, 0x07  
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3.7 Hot Swap Support  
The HW400c/2 complies with the PICMG 2.1 specification for full hot swap in  
CompactPCI systems as defined by the PICMG 2.1 R2.0 specification. Hot swap  
functions, such as power FET control, are provided by a Linear Technologies  
LTC1664 Hot Swap Controller.  
3.7.1 Hot Swap on J1 and J2  
All signals to and from the CompactPCI backplane connectors J1 and J2 are  
precharged to a voltage of 1.0V. This voltage is derived from the 3.3V early power  
source.  
3.7.2 Hot Swap on J3  
The Ethernet PSB signals on J3 do not require a precharge voltage for hot swap  
operation.  
There are power pins assigned to palces that would normally be User I/O on J3 (see  
Section 3.4.5.1). These pins are part of “late power” and are switched on and off by  
the Hot Swap controller.  
3.7.3 Hot Swap on J4  
Signals to and from the J4 H.110 CT Bus connector are precharged to a voltage of  
0.7V. This voltage is derived from the 3.3V early power source.  
3.7.4 Hot Swap on J5  
The J5 rear I/O signals are not bussed on the backplane. Any special hot swap  
considerations must be handled by the PTMC modules and/or RTM making use of  
the J5 rear I/O connector.  
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3.7.5 Hot Swap Sequence  
The hot swap sequence is a coordination between the operator, the hardware on the  
HW400c/2 board, and the host system board that is capable of basic, full, or high-  
availability hot swap. Table 27 outlays the Hot Swap insertion and extraction  
sequences.  
Table 27. Overview of Hot Swap Insertion/Extraction Sequences  
Sequence Type Sequence Process  
INSERTION  
When the board is inserted into the enclosure, the following  
occurs:  
1. Hardware turns on the blue LED.  
2. The L_STAT signal is forced to a high state that is  
sensed by the PCI bridge.  
3. The PCI bridge informs the host system via the ENUM#  
signal to indicate that a board has been inserted.  
4. The host system board initializes the HW400c/2 board  
and instructs the PCI bridge to turn off the blue LED.  
5. The off state of the blue LED assures the operator that  
the board is functional.  
EXTRACTION  
When the board is extracted from the enclosure, the following  
occurs:  
1. The bottom CompactPCI ejector is flipped down to start  
the extraction sequence. The ejector switch forces the  
L_STAT signal to a high state.  
2. The PCI bridge senses the change in L_STAT and  
causes ENUM# to toggle, informing the host system  
board that the HW400c/2 board is about to be extracted.  
3. The operator then waits for the blue LED to turn on  
before attempting to fully eject the HW400c/2 board.  
4. The host system halts all applications associated with the  
HW400c/2 board that is about to be extracted.  
5. The host system then instructs the PCI bridge to turn on  
the blue LED.  
6. After the blue LED turns on, the operator can continue  
with the extraction of the board.  
For a complete description of all hot swap functions, see the PICMG 2.1 R2.0 specification.  
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4 PROGRAMMING INFORMATION  
The HW400c/2 memory map and programmable register information is provided in  
this section.  
4.1 HW400c/2 Memory Map  
Table 28 shows the memory map for the HW400c/2 board.  
Table 28. HW400c/2 Memory Map  
Address  
Start (Hex)  
0
0
0
0
Address  
Memory  
Window Size  
256 MB  
512 MB  
1 GB  
End (Hex)  
0FFF FFFF  
1FFF FFFF  
3FFF FFFF  
7FFF FFFF  
Device  
Device No.  
Device Size  
256 MB  
512 MB  
1 GB  
SDRAM 256MB Mem0/Mem1  
SDRAM 512MB Mem0/Mem1  
SDRAM 1GB  
SDRAM 2GB  
Mem0/Mem1  
Mem0/Mem1  
2 GB  
2 GB  
E000 0000  
E100 0000  
E200 0000  
E000 FFFF  
E100 FFFF  
E20F FFFF  
Disk-on-Chip  
CPLD  
T8110L  
Dev 0  
Dev 1  
Dev 2  
128MB – 8GB  
< 100 Bytes  
64 KB  
64 KB  
1 MB  
F100 0000  
F100 0850  
F100 8000  
F100 FFFF  
MV64462 Reg  
MV64462 Timer  
MV64462 UART  
64 KB  
FF00 0000  
FF80 0000  
FF7F FFFF  
FFFF FFFF  
Boot Rom  
Boot SRAM  
Dev 3  
Dev Boot  
512 KB  
512 KB  
8 MB  
8 MB  
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4.2 CPLD Registers  
All CPLD (Complex Programmable Logic Device) registers are 8-bit registers that  
are accessible by the system controller.  
1: All reserved locations and bits are set to zero after a reset to the CPLD.  
2: Check individual register descriptions for default register values after reset.  
Table 29. CPLD Registers  
Offset  
Address  
Name  
RES0-3  
CSR  
Description  
Reserved (Legacy HW400 Registers)  
Clock Select Register  
Board Status Register  
LED Register A  
Memory Option Register  
Geographic Addressing Register  
PTMC Reset Register  
PTMC Control Register  
Reserved (Legacy HW400 Registers)  
Board Option Register  
(Hex)  
00-03  
04  
05  
06  
07  
08  
09  
0A  
0B-0C  
0D  
0E  
0F  
10  
11  
12  
13  
14  
15  
16  
17  
18-19  
1A  
1B  
1C  
1D  
1E  
1F  
20-27  
28  
29  
2A-2B  
Function  
Reserved  
Read/Write  
Read/Write  
Read/Write  
Read Only  
Read Only  
Read/Write  
Read/Write  
Reserved  
Read Only  
Read/Write  
Read Only  
Read Only  
Read Only  
Read Only  
Read Only  
Read/Write  
Read/Write  
Read Only  
Read/Write  
Reserved  
Read/Write  
Read/Write  
Read/Write  
Read/Write  
Read/Write  
Read Only  
Read/Write  
Read/Write  
Read/Write  
Read/Write  
BSR  
LEDA  
MOR  
GAR  
PRR  
PCR  
RESB-C  
BOR  
GPR  
PSR  
ETR  
General Purpose Register  
PCI Status Register  
Extended Type Register  
Hardware Revision Register  
PLL Configuration Register A  
PLL Configuration Register B  
LED Register B  
Device Control Register  
CPU Timer Register  
Warm reset Register  
HRR  
PLLA  
PLLB  
LEDB  
DCR  
CTR  
WRR  
RES18-19 Reserved for future use  
SPR  
SAR  
SOR  
RBC  
WBC  
SESR  
SDR  
EAR  
EOSR  
EDR  
SPI Page Register  
SPI Address Register  
SPI Read Byte Offset Register  
Read Byte Count Register  
Write Byte Count Register  
SPI Error and Status Register  
SPI Data Registers  
EEPROM Address Register  
EEPROM Operation/Status Register  
EEPROM Data Registers  
RES2C-  
FF  
Reserved for future use  
2C-FF  
Reserved  
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4.2.1 Clock Select Register (CSR)  
The Clock Select Register (CSR) is a Read/Write register. This register selects  
whether or not the H.110 Controller (T8110L) drives the H.110 and local CT bus  
sync and clock. The register bit definitions are shown in Table 30.  
Table 30. Clock Select Register (CSR) Offset Address 0x04  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
L_N2-  
SRC  
L_N1-  
SRC  
L_C8A-  
SRC  
L_C8B-  
SRC  
H_C8A-  
SRC  
H_C8B-  
SRC  
Reserved Reserved  
The backplane H.110 Bus “A” and “B” clocks can be generated by either the HW400c/2 board or from  
the H.110 backplane. Therefore, the H_C8A-SRC and H_C8B-SRC settings must match the  
programming of the H.110 Bus Controller (T8110L).  
Alternatively, the local CT Bus “A” and “B” clocks can be enabled onto the local CT bus via the  
L_C8A-SRC and L_C8B-SRC bits. The T8110L LSC[3:0] pins should be programmed properly prior  
to enabling the clock onto the local CT bus. See Section 3.3.2 for clock routing details. L_N1-SRC and  
L_N2-SRC enable NETREF1 and NETREF2 onto the local CT bus.  
L_N2-SRC  
L_N1-SRC  
= 0 Local CT Bus NETREF2 (PT_NETREF2) not driven by T8110L  
= 1 Local CT Bus NETREF2 (PT_NETREF2) driven by T8110L  
= 0 Local CT Bus NETREF1 (PT_NETREF1) not driven by T8110L  
= 1 Local CT Bus NETREF1 (PT_NETREF1) driven by T8110L  
L_C8A-SRC = 0 Local CT Bus “A” clocks (C8A and FRAMEA) not driven by  
T8110L  
= 1 Local CT Bus “A” clocks (C8A and FRAMEA) are driven by  
T8110L  
L_C8B-SRC = 0 Local CT Bus “B” clocks (C8B and FRAMEB) not driven by  
T8110L  
= 1 Local CT Bus “B” clocks (C8B and FRAMEB) are driven by  
T8110L  
H_C8A-SRC = 0 H.110 “A” clocks (C8A and FRAMEA) not driven by T8110L  
= 1 H.110 “A” clocks (C8A and FRAMEA) are driven by T8110L  
H_C8B-SRC = 0 H.110 “B” clocks (C8B and FRAMEB) not driven by T8110L  
= 1 H.110 “B” clocks (C8B and FRAMEB) are driven by T8110L  
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4.2.2 Board Status Register (BSR)  
The Board Status Register (BSR) is a Read/Write register. This register reflects the  
presence of the CT bus (H.110, see Section 3.3.3), the state of the FACT (Factory)  
LEDS on the front panel (see Figure 3).  
Table 31. Board Select Register (BSR) Offset Address 0x05  
Bit 7  
CT_EN_STAT  
R
Bit 6  
FACT  
R
Bit 5  
Reserved  
-
Bit 4  
DARK  
R/W  
Bit 3  
Reserved Reserved STLEDB STLEDA  
R/W R/W  
Bit 2  
Bit 1  
Bit 0  
-
-
CT_EN_STAT = 0 H.110 present  
= 1 H.110 not present  
FACT  
= 0 Normal operation  
= 1 Reserved  
DARK  
= 0 Normal LED operation  
= 1 Dark Office (all front panel LEDs turned off)  
STLEDB  
STLEDA  
= 0 Status LED B off  
= 1 Status LED B on  
= 0 Status LED A off  
= 1 Status LED A on  
4.2.3 LED Register A (LEDA)  
LED Register A (LEDA) is a Read/Write register. When the “LEDB[1:0]” bits in  
LED Register B (see Section 4.2.15) are set to “11”, the contents of LEDA become  
active and drive the on-board surface-mount LEDs (near cPCI connector J5). When  
active, setting any of the bits to a “1” turns ON the corresponding LED.  
Table 32. LED Register A (LEDA) Offset Address 0x06  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
LEDA7  
LEDA6  
LEDA5  
LEDA4  
LEDA3  
LEDA2  
LEDA1  
LEDA0  
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4.2.4 Memory Option Register (MOR)  
The Memory Option Register (MOR) is a Read-Only register. This register reports  
the presence and size of the M-Systems Disk on Chip device.  
Table 33. Memory Option Register (MOR) Offset Address 0x07  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
DOC3  
DOC2  
DOC1  
DOC0  
Reserved Reserved Reserved Reserved  
DOC3  
= 0  
= 1  
Disk-on-Chip de-populated  
Disk-on-Chip populated (default)  
DOC[2:0]  
= 000  
= 001  
= 010  
= 011  
= 100  
= 101  
= 110  
= 111  
Disk-on-Chip Size is 64 MB  
Disk-on-Chip Size is 128 MB (default)  
Disk-on-Chip Size is 256 MB  
Disk-on-Chip Size is 512 MB  
Disk-on-Chip Size is 1 GB  
Disk-on-Chip Size is 2 GB  
Disk-on-Chip Size is 4 GB  
Disk-on-Chip Size is 8 GB  
4.2.5 Geographic Addressing Register (GAR)  
The Geographic Addressing Register (GAR) is a Read Only register. This register  
shows the value of the Geographic Address Bits as read from the CompactPCI  
backplane connectors J2 and/or J4.  
Geographical Addressing Bits define a physical location (slot) in the CompactPCI  
backplane. The settings of J2 and J4 should be identical. The reason for both  
connectors mirroring the bits is that in some configurations (e.g. a non-PCI backplane  
or a non H.110 backplane) one or the other connector may not be present. For a  
definition of the Geographic Address Bits, see PICMG 2.0 and PICMG 2.5.  
Table 34. Geographic Addressing Register (CSR) Offset Address 0x08  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Reserved Reserved Reserved  
GA4  
GA3  
GA2  
GA1  
GA0  
GA[4:0]  
=
Geographic Address Bits as read from CompactPCI J2  
and/or J4 (backplane) connectors  
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4.2.6 PTMC Reset Register (PRR)  
PTMC Reset Register (PRR) is a Read/Write register that asserts and de-asserts reset  
to the individual PTMC sites. The Reset pulse applied to the PTMC modules must  
conform to the PCI standard, that is, it must be at least 10 PCI clock cycles long.  
Table 35. PTMC Reset Register (PRR) Offset Address 0x09  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Reserved PMCRSTB PMCRSTA Reserved Reserved Reserved Reserved Reserved  
PMCRSTB  
PMCRSTA  
= 0 De-assert PMC Site B RESET (default state)  
= 1 Assert PMC Site B RESET  
= 0 De-assert PMC Site A RESET (default state)  
= 1 Assert PMC Site A RESET  
4.2.7 PTMC Control Register (PCR)  
The PTMC Control Register (PCR) is a Read/Write register. The interoperability of  
each PTMC mezzanine card can be detected by reading this register. After reading  
each card’s PTID bits, the processor can enable the card by setting the site’s PTEN  
bit to “1”. No processor intervention is required for PTIDx[2:0] = 010 or 101, which  
are the codes for PT2MC and PT5MC, respectively. When either of these codes is  
detected by the CPLD, the PTEN bit for the site is set to “1” automatically, and the  
card in that site is enabled.  
Table 36. PTMC Control Register (PCR) Offset Address 0x0A  
Bit 7  
PTENB  
R/W  
Bit 6  
PTIDB2  
R
Bit 5  
PTIDB1  
R
Bit 4  
PTIDB0  
R
Bit 3  
PTENA  
R/W  
Bit 2  
PTIDA2  
R
Bit 1  
PTIDA1  
R
Bit 0  
PTIDA0  
R
PTENB  
= 0  
= 1  
PTMC Site B Disabled  
PTMC Site B Enabled  
PTIDB[2:0]  
= 000  
= 010  
= 101  
= 111  
Site B is 32-bit PMC type, or is not present  
Site B is PT2MC type  
Site B is PT5MC type  
Site B is 64-bit PMC type, or PT7MC type  
PTENA  
= 0  
= 1  
PTMC Site A Disabled  
PTMC Site A Enabled  
PTIDB[2:0]  
= 000  
= 010  
= 101  
= 111  
Site A is 32-bit PMC type, or is not present  
Site A is PT2MC type  
Site A is PT5MC type  
Site A is 64-bit PMC type, or PT7MC type  
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4.2.8 Board Option Register (BOR)  
The Board Option Register (BOR) is a Read Only register. This register indicates the  
configuration and product type. Bit 5, bit 2, bit 1 and bit 0 are always “1” for the  
HW400c/2 board.  
Table 37. Board Option Register (BOR) Offset Address 0x0D  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
BUSMD1B BUSMD1A  
1
Reserved Reserved  
1
1
1
BUSMD1B  
BUSMD1A  
= 0  
= 1  
PTMC Site B PCI Incapable  
PTMC Site B PCI Capable  
= 0  
= 1  
PTMC Site A PCI Incapable  
PTMC Site A PCI Capable  
4.2.9 General Purpose Register (GPR)  
The General Purpose Register (GPR) is a Read/Write register that can be used to  
indicate boot status information to the IPMI controller. The HW400c/2 boot status  
can also be indicated by the on board surface-mount LEDs during the boot process  
(LEDB[1:0] = 00).  
Table 38. General Purpose Register (GPR) Offset Address 0x0E  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
BTST3  
BTST2  
BTST1  
BTST0  
Reserved Reserved Reserved Reserved  
BTST[3:0]  
= 0000 Boot status level = 0 (default)  
= 0001 Boot status level = 1  
= 0010 Boot status level = 2  
= 0011 Boot status level = 3  
= 0100 Boot status level = 4  
….  
….  
= 1111 Boot status level = 15  
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4.2.10 PCI Status Register (PSR)  
The PCI Status Register (PSR) is a Read-Only register and indicates the status of the  
host and local PCI buses. The bits of this register are defined as follows.  
Table 39. PCI Status Register (PSR) Offset Address 0x0F  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Reserved Reserved Reserved  
LPCI2  
LPCI1  
LPCI0  
Reserved  
NOPCI  
LPCI  
= 0  
= 1  
Local PCI Bus running in PCI mode  
Local PCI Bus running in PCI-X mode  
LPCI[1:0]  
= 00  
= 01  
= 10  
= 11  
Local PCI Bus running at 33 MHz  
Local PCI Bus running at 66 MHz  
Local PCI Bus running at 100 MHz  
Local PCI Bus running at 133 MHz  
NOPCI  
= 0  
= 1  
Host PCI Bus is present (cPCI backplane has PCI)  
No Host PCI bus on cPCI backplane  
4.2.11 Extended Type Register (ETR)  
The Extended Type Register (ETR) is a Read-Only register that indicates the type of  
board. It is only used in the case when bits 0-2 in the Board Option Register (BOR)  
is set to “111”. The ETR[2:0] bits are permanently set to “111”, while ETR[7:3]  
represents the board type.  
Table 40. Extended Type Register (ETR) Offset Address 0x10  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
ETR7  
ETR6  
ETR5  
ETR4  
ETR3  
1
1
1
ETR[7:3]  
= 00000  
= 00001  
= 00010  
HW400c/2 Standard Version  
Reserved for future versions  
Reserved for future versions  
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4.2.12 Hardware Revision Register (HRR)  
The Hardware Revision Register (HRR) is a Read-Only register. It contains the  
current major and minor (optional) hardware revision for the board.  
Table 41. Hardware Revision Register (HRR) Offset Address  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
HRR7  
HRR6  
HRR5  
HRR4  
HRR3  
HRR2  
HRR1  
HRR0  
HRR[7:4]  
HRR[3:0]  
= xxxx  
= yyyy  
HW400c/2 Major Revision  
HW400c/2 Minor Revision  
4.2.13 PLL Configuration Register A (PLLA)  
The PLL Configuration Register A (PLLA) is a Read-Only register. It contains the  
settings for the CPU PLL. Reading this register (along with PLLB) can help software  
determine the CPU operating frequency. Please refer to either the MPC7447A or  
MPC7448 Hardware Specifications documents, in the PLL Configuration section, for  
a table of all possible values.  
Table 42. PLL Configuration Register A (PLLA) Offset Address 0x12  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Reserved Reserved  
CPLL5  
CPLL4  
CPLL3  
CPLL2  
CPLL1  
CPLL0  
CPLL[5:0]  
= 0x0B Default setting for HW400c/2 Standard Version  
(CPU core clock is 1.0 GHz when system bus clock is  
166 MHz)  
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4.2.14 PLL Configuration Register B (PLLB)  
The PLL Configuration Register B (PLLB) is a Read-Only register. It contains the  
settings for the System bus and Device bus (external) PLLs. Reading this register  
(along with PLLA) can help software determine the CPU operating frequency, as  
well as the Device bus operating frequency.  
Table 43. PLL Configuration Register B (PLLB) Offset Address 0x13  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Reserved Reserved  
SPLL1  
SPLL2  
Reserved Reserved  
DPLL1  
DPLL0  
SPLL[1:0]  
= 00  
= 01  
= 10  
System bus clock is 100 MHz  
System bus clock is 133 MHz  
System bus clock is 166 MHz (Default for HW400c/2  
standard version)  
= 11  
System bus clock is 200 MHz  
DPLL[1:0]  
= 00  
= 01  
Device bus clock is 100 MHz  
Device bus clock is 133 MHz (Default for HW400c/2  
standard version)  
Reserved  
Reserved  
= 10  
= 11  
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4.2.15 LED Register B (LEDB)  
The LED Register B (LEDB) is a Read/Write register. It contains controls for the  
eight on-board surface-mount LEDs as well as the optional LAN status LEDs.  
Table 44. LED Register B (LEDB) Offset Address 0x14  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
STLEDD STLEDC  
LAN2  
LAN1  
LAN0  
LEDB2  
LEDB1  
LEDB0  
STLEDD  
STLEDC  
LAN[2:0]  
= 0  
= 1  
Status LED D off  
Status LED D on  
= 0  
= 1  
Status LED C off  
Status LED C on  
= 000  
= 001  
= 010  
….  
Status LEDs C and D indicate Port 0 Status  
Status LEDs C and D indicate Port 1 Status  
Status LEDs C and D indicate Port 2 Status  
….  
= 111  
Status LEDs C and D indicate Port 7 Status  
LEDB2  
= 0  
= 1  
Status LEDs C and D controlled by register bits STLEDC  
and STLEDD  
Status LEDs C and D indicate LAN Status for port  
defined by LAN[2:0]  
LEDB[1:0]  
= 00  
= 01  
= 10  
On-Board LEDs indicate Boot Status (default)  
On-Board LEDs indicate LAN Status  
On-Board LEDs indicate BCM5388 Ethernet Switch Load  
Status  
= 11  
On-Board LEDs controlled by LED Register A  
On-Board LED (L7 – L0) functions determined by LEDB[1:0] are further explained below in Table 45.  
Table 45. On-board LED functions as determined by LEDB [1:0]  
LEDB  
[1:0]  
L7  
L6  
L5  
L4  
L3  
L2  
L1  
L0  
BCM5388  
LEDERR  
LAN7  
LOAD7  
LEDA7  
00  
ZIRC_BOOT RESET INITACT BTST3  
BTST2 BTST1 BTST0  
LAN2 LAN1 LAN0  
01  
10  
11  
LAN6  
LOAD6  
LEDA6  
LAN5  
LOAD5  
LEDA5  
LAN4  
LOAD4  
LEDA4  
LAN3  
LOAD3 LOAD2 LOAD1 LOAD0  
LEDA3 LEDA2 LEDA1 LEDA0  
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4.2.16 Device Control Register (DCR)  
The Device Control Register (DCR) is a Read/Write register, which controls the CPU  
timer enable and three resets.  
The Reset pulse applied to any device must conform to the specifications of that particular device.  
Please refer to the applicable device manual for details.  
Table 46. Device Control Register (CSR) Offset Address 0x15  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Reserved Reserved CTREN Reserved Reserved DOCRST T8110L_RST ETHRST  
CTREN  
= 0  
= 1  
CPU Timer disabled (default state)  
CPU Timer enabled  
DOCRST  
= 0  
= 1  
De-assert Disk-on-Chip RESET (default state)  
Assert Disk-on-Chip RESET  
T8110L_RST = 0  
= 1  
De-assert T8110L RESET (default state)  
Assert T8110L RESET  
ETHRST  
= 0  
= 1  
De-assert Ethernet Switch & PHY RESET (default state)  
Assert Ethernet Switch & PHY RESET (minimum 5us)  
4.2.17 CPU Timer Register (CTR)  
The CPU Timer Register is a Read-Only register. It is used for measuring CPU  
performance. The register value increments once for each tick of the (1.5625 MHz)  
SPI serial clock, i.e. once every 640 ns.  
The CPU Timer Register is enabled by writing a “1” to DCR bit 5 (CTREN, see  
Section 4.2.16). Otherwise, it is held to a count value of 0x00 when DCR bit 5 is “0.  
Table 47. CPU Timer Register (CTR) Offset Address 0x16  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
CTR7  
CTR6  
CTR5  
CTR4  
CTR3  
CTR2  
CTR1  
CTR0  
CTR[7:0]  
CTR[7:0]  
= 0x00 –> 0xFF  
= 0x00  
(when DCR bit 5 = 1)  
(when DCR bit 5 = 0)  
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4.2.18 Warm Reset Register (WRR)  
The Warm Reset Register is a Read/Write Register. Writing a value of 0x77 to the  
Warm Reset Register initializes a Warm Reset. The actual reset signal is driven by  
the CPLD 1-2 milliseconds after writing 0x77 to the WRR. The CPU, System  
Controller, CPLD registers, T8110, Disk on Chip, Ethernet Switch and PHYs, and  
local PCI (PCI1) are all reset. Host PCI (PCI0) reset is not affected. Writing a value  
other than 0x77 to the WRR has no effect, except the value is latched and readable.  
Table 48. Warm Reset Register (WRR) Offset address 0x17  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
WRR7  
WRR6  
WRR5  
WRR4  
WRR3  
WRR2  
WRR1  
WRR0  
WRR[7:0]  
WRR[7:0]  
= 0x77  
0x77  
Warm reset  
No effect, value is latched  
4.2.19 SPI Page Register (SPR)  
The SPI Page Register is a Read/Write register. It is used for selecting the desired  
page when accessing the BCM5388 Ethernet Switch SPI port.  
Table 49. SPI Page Register (SPR) Offset Address 0x1A  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
SPR7  
SPR6  
SPR5  
SPR4  
SPR3  
SPR2  
SPR1  
SPR0  
SPR[7:0]  
= 0x00 – 0xFF  
4.2.20 SPI Address Register (SAR)  
The SPI Address Register is a Read/Write register. It is used for selecting the desired  
register address (within each page) when accessing the BCM5388 Ethernet Switch  
SPI port.  
Table 50. SPI Address Register (SAR) Offset Address 0x1B  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
SAR7  
SAR6  
SAR5  
SAR4  
SAR3  
SAR2  
SAR1  
SAR0  
SPR[7:0]  
= 0x00 – 0xFF  
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4.2.21 SPI Read Byte Offset Register (SOR)  
The SPI Byte Offset Select Register is a Read/Write register. It is used for selecting  
the desired byte offset (within the register selected by the SAR) when reading from  
the BCM5388 Ethernet Switch SPI port. In the case where the entire register is not  
being read, the SOR can be set to a non-zero value to index to the desired starting  
byte.  
Table 51. SPI Read Byte Offset Select Register (SOR) Offset Address 0x1C  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Reserved Reserved Reserved Reserved Reserved  
SOR2  
SOR1  
SOR0  
SOR[2:0]  
= 000  
= 001  
= 010  
….  
No byte offset (Select 1st byte)  
Select 2nd byte  
Select 3rd byte  
….  
= 111  
Select 8th byte  
4.2.22 Read Byte Count Register (RBC)  
The Read Byte Count Register is a Read/Write register. It is used for setting the  
number of bytes to be read when reading from the BCM5388 SPI port. When this  
register is written, the internal SPI Read State Machine is initiated. After all  
requested bytes are read from the BCM5388, the RBC value is cleared.  
Table 52. Read Byte Count Register (RBC) Offset Address 0x1D  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Reserved Reserved Reserved Reserved  
RBC3  
RBC2  
RBC1  
RBC0  
RBC[3:0]  
= 0x1 – 0x8  
Read from one to eight bytes from the BCM5388  
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4.2.23 Write Byte Count Register (WBC)  
The Write Byte Count Register is a Read/Write register. It is used for setting the  
number of bytes to be written when writing to the BCM5388 SPI port.  
All bytes in a given register must be written; for example, if the register to be written  
contains 3 bytes, then WBC[3:0] must be set to 0011. When this register is written,  
the internal SPI Write State Machine is initiated. After all bytes are written to the  
BCM5388 register, the WBC value is cleared.  
Table 53. Write Byte Count Register (WBC) Offset Address 0x1E  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Reserved Reserved Reserved Reserved  
WBC3  
WBC2  
WBC1  
WBC0  
WBC[3:0]  
= 0x1 – 0x8  
Write from one to eight bytes from the BCM5388  
4.2.24 SPI Data Registers (SDR0 – SDR7)  
The SPI Data Registers are Read/Write registers. They are used for holding data  
bytes to be read from or written to the BCM5388 SPI port.  
Written values cannot be read back. They are written to the BCM5388 during an SPI  
write operation. Similarly, read values are not affected by writes. They are read  
from the BCM5388 after an SPI read operation, and remain until the next operation.  
In the case of a single-byte read or write, only SDR0 (offset 0x20) is used. In the  
case of a multi-byte read or write, SDR0 is the least significant data byte (LSB) and  
the remaining one to seven bytes are written to SDR1- SDR7 (last byte is MSB - up  
to eight bytes total).  
Table 54. SPI Data Registers (SDRn) Offset Address 0x20-0x27  
Register  
SDR0  
SDR1  
SDR2  
SDR3  
SDR4  
SDR5  
SDR6  
SDR7  
Offset  
0x20  
0x21  
0x22  
0x23  
0x24  
0x25  
0x26  
0x27  
Byte  
LSB  
MSB (2-byte register)  
MSB (3-byte register)  
MSB (4-byte register)  
MSB (5-byte register)  
MSB (6-byte register)  
MSB (7-byte register)  
MSB (8-byte register)  
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4.2.25 SPI Error and Status Register (SESR)  
The SPI Error Register is a Read Only register. SBSY clears when the previous  
operation is completed, and the SPIFER, RACKER, and BYTER error flags clear  
when the next operation is started.  
SBSY can be polled immediately after writing to the RBC or WBC registers.  
SPIFER, RACKER and BYTER are valid after SBSY=0 (Interface Ready), but are  
cleared when writing to the RBC or WBC registers for the next operation.  
Table 55. SPI Error and Status Register (SESR) Offset Address 0x1F  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Reserved Reserved Reserved Reserved  
BYTER  
RACKER  
SPIFER  
SBSY  
SBSY  
= 0  
= 1  
SPI Interface ready for read/write operation  
SPI Interface busy; operation in progress  
SPIFER  
RACKER  
BYTER  
= 0  
= 1  
SPIF Check passed  
SPIF Check failed; no operation performed  
= 0  
= 1  
RACK Check passed  
RACK Check failed; no operation performed  
= 0  
= 1  
Byte count was OK  
Byte count was zero; no operation performed  
4.2.26 EEPROM Address Register (EAR)  
The EEPROM Address Register is a Read/Write register. It is used for selecting the  
desired (16-bit word) address when accessing the serial EEPROM.  
Table 56. EEPROM Address Register (EAR) Offset Address 0x28  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
EAR7  
EAR6  
EAR5  
EAR4  
EAR3  
EAR2  
EAR1  
EAR0  
EAR[7:0]  
= 0x00 – 0xFF  
(Word Address)  
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4.2.27 EEPROM Operation/Status Register (EOSR)  
The EEPROM Operation and Status Register is a Read/Write register. It is used for  
initiating a read or write operation to the EEPROM, and checking the programming  
status after a write operation.  
Bits 0-3 are self-clearing, and bit 7 clears when the next operation is started.  
Attempting to write EEPROM word addresses 0x00-0x0F without the FAC jumper  
installed results in a write error, setting WERR bit. These addresses are reserved for  
SBE board ID identification and are programmed by SBE during board  
manufacturing.  
Table 57. EEPROM Operation/Status Register (EOSR) Offset Address 0x29  
Bit 7  
WERR  
R
Bit 6  
Bit 5  
Bit 4  
EBSY  
R
Bit 3  
ERD  
W
Bit 2  
EWDS  
W
Bit 1  
EWR  
W
Bit 0  
EWEN  
W
Reserved Reserved  
R
R
EWEN:  
EWR:  
Writing a “1” to this bit initiates a EWEN cycle, required before a write.  
Writing a “1” to this bit initiates a write, using the EAR address and  
EDR data.  
EWDS:  
ERD:  
Writing a “1” to this bit initiates a EWDS cycle, required after a write.  
Writing a “1” to this bit initiates a read, using the EAR address and  
EDR data.  
EBSY  
= 0  
= 1  
EEPROM is ready for next write operation  
EEPROM is busy writing (no reads or writes allowed)  
WERR  
= 0  
= 1  
Write operation completed successfully  
Write error, operation not completed  
For more information on the serial EEPROM, consult the device data sheets. Devices supported include  
Atmel AT93C66A, Microchip 93LC66C, and ST Microelectronics M93C66.  
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4.2.28 EEPROM Data Registers (EDR0 – EDR1)  
The EEPROM Data Registers are Read/Write registers. They are used for holding  
data bytes to be read from or written to the serial EEPROM.  
Values written to EDR0-1 are stored in an internal shift register and cannot be read  
back by reading EDR0-1. They are written to the EEPROM during a write operation.  
Reading EDR0-1 returns serial data obtained from the most recent EEPROM ERD  
operation.  
All read/write operations are 2-bytes, since the EEPROM is organized in a x16  
format. EDR0 is the least significant data byte (LSB) and EDR1 is the most  
significant data byte (MSB).  
Table 58. EEPROM Data Registers (EDRn) Offset Address 0x2A-0x2B  
Register  
EDR0  
Offset  
0x2A  
0x2B  
Byte  
LSB  
MSB  
EDR1  
4.3 Accessing the Serial EEPROM  
The serial EEPROM (Atmel AT93C66A and other manufacturers) is organized with  
256 words of 2 bytes each. One word address is accessed per operation using the  
CPLD state machine.  
4.3.1 Reading an EEPROM Address  
A. Set to EEPROM Address Register (EAR, see Section 4.2.25) to the desired word  
address.  
B. Check the EBSY flag in the EEPROM Operation/Status Register (EOSR, see  
Section 4.2.26). If set to “0”, proceed to the next step.  
C. Write a “0x08” to the EOSR. This starts the read operation, which typically  
takes 35 us to complete.  
D. Check the EBSY flag. If set to “0”, the data is ready – proceed to the next step.  
E. Read the data bytes from the EEPROM Data Registers EDR0 (LSB) and EDR1  
(MSB). See section 4.2.27 for the register description.  
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4.3.2 Writing an EEPROM Address  
A. Check the EBSY flag in the EEPROM Operation/Status Register (EOSR, see  
Section 4.2.26). If set to “0”, proceed to the next step.  
B. Write a “0x01” to the EOSR. This starts the Write Enable operation (EWEN).  
C. Check the EBSY flag. If set to “0”, EWEN is complete – proceed to the next  
step.  
D. Set the EEPROM Address Register (EAR, see Section 4.2.25) to the desired  
word address.  
E. Write data bytes to the EEPROM Data Registers EDR0 (LSB) and EDR1 (MSB).  
F. Write a “0x02” to the EOSR. This starts the write operation, which typically  
takes 3 ms to complete.  
G. Check the EBSY flag. If set to “0”, proceed to the next step.  
H. Check the WERR flag. If set to “0”, the write was successful. Otherwise, a write  
protect or other error prevented the write operation from completing.  
I. If writing more data, repeat steps [D] through [H]. If finished writing, proceed to  
the next step.  
J. Write a “0x04” to the EOSR. This starts the Write Disable operation (EWDS).  
4.4 Accessing the SPI Interface  
This is a description of the interface in the CPLD on the HW400c/2 board for  
accessing the read and write registers of the BCM5388 Ethernet switch. The CPLD  
acts as a simplified wrapper for customer and test access to the complex, multi-state  
serial SPI interface of the Ethernet switch. The switch has up to 255 pages of  
registers and up to 255 registers per page. The registers vary in length from 1 to 8  
bytes, and are byte addressed  
4.4.1 Registers in the CPLD  
Refer to Sections 4.2.18 to 4.2.24 for CPLD register details. These are the registers  
within the CPLD used to access the registers of the BCM5388 Ethernet switch.  
(These are NOT the Ethernet switch registers. See the BCM5388 User Guide for full  
description, page addresses, register addresses and byte lengths of each of its  
registers).  
4.4.2 BCM5388 Registers Access Rules  
There are a few rules for accessing the BCM5388 registers that must be followed for  
successful reads and writes. For writes, the exact register size must be written to the  
WBC register, or the write operation will not be completed. For reads, setting the  
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RBC to a size that exceeds the actual register size will result in an incorrect read  
value.  
No error flags will be set to indicate these types of errors.  
When reading or writing the BCM5388 registers, ensure that the register size values  
are in strict accordance with the BCM5388 data sheet.  
!
4.4.3 Reading BCM5388 Register  
A. Check the SBSY flag in the SPI Error and Status Register, bit 0 (SESR, see  
Section 4.2.24). If set to “0”, proceed to the next step.  
B. Set the SPI Page Register (SPR, see Section 4.2.18) to the desired register page  
of the Ethernet switch.  
C. Set the SPI Address Register (SAR, see Section 4.2.19) to the desired register  
base byte address within the selected page.  
D. Set the SPI Read Byte Address Offset Register (SOR, see Section 4.2.20) to the  
first byte to be read of the Ethernet switch register:  
‘0’ for the first byte, bits 0-7 (LSB) of the register  
‘1’ for the 2nd byte, bits 8-15, and so on.  
E. Set the Read Byte Count Register (RBC, see Section 4.2.21) to the count of bytes  
to read. This step initiates reading from the switch to the CPLD.  
An incorrect read value will result if this count exceeds the size of the Ethernet  
switch register. There are no error flags to indicate this type of error.  
!
F. Poll the SBSY flag until it equals “0”.  
G. Check the SESR for any error flags. If no errors, proceed to the next step.  
H. Read each byte out of the SPI Data Registers (SDR0-7, see Section 4.2.23). The  
first byte is LSB.  
4.4.4 Writing a BCM5388 Register  
A. Check the SBSY flag in the SPI Error and Status Register, bit 0 (SESR, see  
Section 4.2.24). If set to “0”, proceed to the next step.  
B. Set the SPI Page Register (SPR, see Section 4.2.18) to the desired register page  
of the Ethernet switch.  
C. Set the SPI Address Register (SAR, see Section 4.2.20) to the desired register  
base byte address within the selected page. (There is no byte offset for writing.)  
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D. Write the bytes to be written into the SPI Data Registers (SDR0-7, see Section  
4.2.24), beginning with LSB in SDR0.  
E. Set the Write Byte Count Register (WBC, see Section 4.2.23) to the count of  
bytes to write. This step initiates writing to the Ethernet switch.  
The register will not be written if this count differs from the size of the Ethernet  
switch register. There are no error flags to indicate this type of error.  
!
F. Poll the SBSY flag until it equals “0”.  
G. Check the SESR for any error flags. If no errors, the operation is complete.  
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5 LINUX ON THE HW400C/2 AND HOST SYSTEM  
The HW400c/2 uses an off the shelf 2.6.9 PPC Linux kernel distribution from Gentoo  
(www.gentoo.org) with some additional files added specific to the HW400c/2, and  
with the GenericHDLC WAN stack enabled. The Gentoo Linux kernel may be  
delivered as a generic compressed archive that can be downloaded, or on a CD-ROM  
available from SBE. The compressed image is the tar gzip (.tgz) format, the form  
typically used for software obtained from the SBE website at http://www.sbei.com.  
To summarize, the Linux kernel for the HW400c/2 is installed on a host system that  
also runs Linux. See Figure 14. The root file system for the HW400c/2 is installed on  
the host system in the /opt/gentoo/ directory and must be made available to the  
HW400c/2 board via NFS. After correctly configuring the network interface on the  
HW400c/2 with U-boot (the Boot ROM program), the Gentoo Linux kernel is  
downloaded to the HW400c/2 board using tftp. You can then boot the Linux kernel,  
which mounts the NFS root file system. The PPC version of the Gentoo Linux  
distribution contains the necessary PPC architecture to allow the kernel and all  
drivers to be compiled natively on the HW400c/2, eliminating the need to for a cross-  
compile development environment on the host system.  
The next few sections list the requirements and explains the processes required for  
installing Gentoo Linux for the SBE HighWire 400c/2 on a host Linux system.  
Section 5.5 explains how to configure your HW400c/2 and how to boot the Linux  
kernel.  
HW400c/2  
Linux 2.6  
Network connection  
Host System  
U-boot  
Services:  
nfs  
tftp  
bootp  
Console port  
9600 8n1  
ASCII  
terminal  
PPC OS:  
/opt/gentoo  
Figure 14. HW400c/2 Network and System environment  
5.1 Host Hardware and Software Requirements  
In order to install Gentoo Linux as a development environment on a host Linux  
system, the host system must satisfy the following minimum requirements:  
Intel Pentium or compatible processor  
64 Mbytes (or better) RAM  
750 Mbytes available disk space  
Ethernet  
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Recent distribution of Linux installed. Because Gentoo Linux is based on the  
2.6 series Linux kernel, it is best to use Gentoo Linux in conjunction with a  
host that has a Linux distribution based on the 2.6 kernel.  
5.2 Network and System Configuration  
Booting Linux on the HW400c/2 requires services that are traditionally installed as  
part of a server or development Linux installation. If you are putting together a  
development system that you will use to host one or more HW400c/2s and your  
desktop Linux distribution supports a server-class installation, we suggest that you  
use this installation class.  
If your desktop Linux system includes a firewall, you might find that it is pre-  
configured to suppress many of the types of communications (FTP, TFTP, DHCP,  
NFS, etc.) that the HW400/c2 requires in order to boot. If you cannot successfully  
boot your board using the instructions provided in this section because the board  
cannot communicate with the system on which you installed the Gentoo Linux  
distribution, make sure that you have either disabled any default firewall installation,  
or that you have at least enabled the specific services necessary to boot Linux as  
described in this chapter.  
5.3 Installing Linux on your host system  
For simplicity, the following instructions assume that you are installing from a  
downloaded copy Gentoo Linux for the SBE HW400c/2 from SBE’s ftp archive.  
Copy the archive file to /optand uncompress it. You should use the following  
commands to uncompress the archive and extract its contents:  
# tar -zxvf <downloaded_file>  
# cd <extracted_directory>  
Once extracted, you will find a complete Gentoo PPC Linux source code distribution  
under /opt/gentoo. This file system will be used to create the downloadable  
kernel image for the HW400c/2.  
The version of Gentoo from www.gentoo.org does not have the extra files needed for  
operation on the HW400c/2. The Gentoo Linux distribution for the HW400c/2 be  
obtained from SBE.  
!
You must have root privileges to install the Gentoo Linux distribution. All of the  
examples in this section show the standard prompt for the root user, #. You should  
not type the # character when entering the commands described in this section.  
Before installing the Linux kernel you should read any available Release Notes.  
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5.4 Configuring the Host System  
The next few sections describe daemons and system services that must be installed  
and correctly activated in order to boot the Linux kernel on the HW400c/2 and  
subsequently compile applications for the HW400c/2.  
5.4.1 Modifying the Host Path  
Since all software is compiled natively on the HW400c/2, there is no need to modify  
the host’s path.  
5.4.2 Configuring the Host NFS Server  
The Linux kernel is a ready-to-run root file system for your target architecture,  
enabling you to boot your target embedded system over the network using the  
exported file system as the target’s root file system. Although you might eventually  
want to use a small, specific root file system as an initial disk-on-chip image for your  
final product, having access to a complete Linux distribution and tool set for your  
target system provides you with access to a wide range of Linux software for testing  
and debugging purposes.  
To export the root file system, you will need to edit the /etc/exports file on  
your host machine, adding an entry for that file system that looks something like the  
following:  
# /opt/gentoo 10.0.0.10(rw,no_root_squash)  
This entry consists of two fields:  
The full pathname of the directory being exported by the host system as the  
root file system for the target system  
Access information for the exported file system. This consists of the IP  
address of the system that you want to be able to access the exported file  
system, followed by a description of the type of access that the target system  
will have to the exported file system, enclosed within parentheses.  
The IP address of the target system depends on the IP address that is assign to the  
HW400c/2 board. The value shown in the previous example is a commonly used  
non-routable IP address, and is the IP address used in the examples in this section.  
You should specify the IP address that you have assigned to your HW400c/2 board,  
or you can simply enter a * in order to grant access to the exported file system to any  
host.  
Using * to specify the IP addresses of hosts permitted to access an exported file  
system is extremely insecure and should only be done if you are on a trusted, private,  
non-routable network and the system exporting the file system is not exposed to the  
Internet.  
!
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The parenthesized access privilege values shown in the previous example should be  
sufficient. These access privileges specify that the target system at the specified IP  
address will have read/write access to the exported file system, and that the user ID  
(UID) of the root user on the target system will not be prevented from writing or  
modifying files in the NFS mounted file system.  
After adding appropriate entries to the /etc/exports file on the host system, you  
will then need to restart (or start) the NFS daemon on your host system, which can  
usually be accomplished by using the following commands:  
# /etc/rc.d/init.d/nfslock restart  
# /etc/rc.d/init.d/nfs stop  
# /etc/rc.d/init.d/nfs start  
You should separately start and stop the NFS service rather than simply restarting it  
because the nfs restart only restarts the rpc.mountd wrapper service,  
rather than the mountd and nfsd daemons.  
The commands shown in the previous listing are for a Red Hat Linux system running on the Host. If you  
are using another Linux distribution such as Mandrake, Debian, or others, the commands to start, stop,  
or restart the NFS lock and mount daemons may be different.  
For more information about NFS, see the following:  
The NFS FAQ at http://nfs.sourceforge.net/  
The NFS HOWTO at http://nfs.sourceforge.net/nfs-howto/  
5.4.3 Configuring Host tftp services  
One of the ways the SBE HW400c/2 boots is by using the Trivial File Transfer  
Protocol (TFTP) to download a kernel image to the board. This requires that a TFTP  
server be available on the system on which you are hosting the Gentoo Linux kernel.  
On most modern Linux systems, the TFTP server is installed as a part of a network-  
capable system installation, but is usually deactivated. This section explains how to  
activate the TFTP server on your Linux system and how to copy the Gentoo Linux  
kernel into the area from which the TFTP server can deliver the kernel to the  
HW400c/2.  
If a TFTP server is not available on your Linux distribution or installed system, you can obtain a binary  
version for most Linux distributions from http://www.rpmfind.net/ by searching for the string tftpd.  
Before configuring the TFTP daemon itself, make sure that the entries for the TFTP  
protocol are not commented out in the /etc/services file. This file is typically  
consulted by each network service in order to determine the network ports that it  
should use. You must be root to edit this file. Entries in this file are commented out if  
they are preceded with a hash-mark (#) in the file - to activate them, use your favorite  
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text editor to remove the hash mark on each line that contains the string tftp. Active  
TFTP entries in /etc/services should look like the following:  
tftp 69/tcp  
tftp 69/udp  
Depending on the Linux distribution and version you are using on the host, Linux  
systems typically use one of two mechanisms to activate and manage network servers  
such as TFTP servers. These are the Extended Internet Services Daemon, xinetd,  
and the older Internet Services Dameon, inetd. Both the xinetd and inetd  
manage a variety of network services by monitoring various network ports and  
starting the appropriate daemon in response to a valid request. The xinetd is the  
more modern of these two mechanisms, and is generally viewed as being more secure  
than the older inetd.  
To determine which of these mechanisms your system uses to manage Internet  
services, you can use the system’s ps (process status) command, as in the following  
example:  
# ps alxww | grep inet  
5 0 2486 1  
16 0 2844 872 -  
Ss ?  
0:00 xinetd .. .  
4 0 13205 13183 17 0 5472 668 pipe_w S+ pts/6 0:00 grep inet  
This example shows that the system is using the xinetd server to manage Internet  
services. In this case, you should follow the instructions in Section 5.4.5. If the output  
from this command on your system shows that it is running the inetd, proceed to  
the next section, Section 5.4.4.  
5.4.4 Configuring tftp with inetd  
The servers that can be managed by the inetd are listed in the file  
/etc/inetd.conf. Each line in this file contains the entry for a specific server.  
To enable the TFTP server, edit the file /etc/inetd.conf as the root user on  
your system, and locate the line that looks like the following:  
#tftp dgram udp wait root /usr/sbin/tcpd in.tftpd  
Uncomment (remove the hash mark) from the beginning of this line, save the  
modified file, and exit the editor.  
Add the option and value -s /tftpboot to the end of this line. This specifies the  
directory in which the TFTP server will look for files. This is the directory in which  
you will put the compiled Gentoo Linux kernel image (uImage) that the SBE  
HighWire HW400c/2 will download and boot.  
Next, force the inetd to reread its configuration file. Because all Linux  
distributions use different mechanisms for starting and stoppping system processes,  
the easiest way to do this is to send the HUP signal to the running inetdprocess.  
To do this, you must first locate the process ID of the inetd process that is  
currently running on your system using the ps (process status) command, as in the  
following example:  
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# ps alxww | grep inet  
140 0 578 1 0 0 1152 356 do_select S ? 0:00 inetd  
0 500 13361 13336 18 0 1360 508 pipe_read S ? 0:00 grep -i inet  
The alxww options to ps cause the command to display all system processes in an  
extremely wide listing. The grep then searches for the string inet in the resulting  
output. Each line of the output from the command shown in this example therefore  
displays information about a running command whose name or arguments contain the  
string inet. Of these, the first is the actual inetd process, and the third whitespace-  
separated field in this output is its process ID (578 in this example), which is the  
information that you will need to restart the process.  
After collecting this information, you can cause the inetd process to reread its  
configuration file by executing a command like the following:  
# kill -HUP 578  
After executing this command, the TFTP server will be started on your system in  
response to incoming TFTP requests.  
If the system is running a Linux distribution such as Red Hat Linux that starts and stops system  
processes using rc scripts, you may simply restart the inetd by invoking these scripts in the following  
way:  
# /etc/rc.d/init.d/inet restart  
This command will stop and then restart all of the Internet services on the Linux system. You may not  
want to do this if your system is running Internet services on which other systems depend, as it will  
cause a slight interruption in those services.  
The final step in configuring the TFTP server on the host Linux system is to copy the  
Gentoo Linux kernel that the SBE HighWire HW400c/2 will download and boot  
from into the /tftpboot directory so that the board can access it:  
If the /tftpboot directory does not already exist, create it as the root user  
on the host system with the mkdir /tftpboot command.  
# mkdir /tftpboot  
Copy the compiled Gentoo Linux kernel file, uImage, into the  
/tftpboot directory from the top level of the directory structure that was  
created when unpacking the files of the downloaded Gentoo Linux archive.  
# cp /opt/gentoo/usr/src/linux/arch/ppc/boot/images/uImage\  
/tftpboot/.  
HW400c/2 board to download and boot Gentoo Linux.  
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5.4.5 Configuring tftp with xinetd  
The servers that can be managed by the xinetd are each listed in a server-specific  
configuration file located in the directory /etc/xinetd.d. The file for the TFTP  
server is aptly named tftp, and looks like the following:  
# default: off  
# description: The tftp server serves files using the Trivial File Transfer \  
# Protocol. The tftp protocol is often used to boot diskless \  
# workstations, download configuration files to network-aware printers, \  
# and to start the installation process for some operating systems.  
service tftp  
{
disable  
socket_type  
protocol  
wait  
= no  
= dgram  
= udp  
= yes  
user  
server  
server_args  
per_source  
cps  
= root  
= /usr/sbin/in.tftpd  
= -s /tftpboot  
= 11  
= 100 2  
flags  
= IPv4  
}
To enable the TFTP server, edit this file (as root), changing the line that reads  
disable = yes so that it reads disable = no.  
Next, force the xinetd to reread its configuration files. Because all Linux  
distributions use different mechanisms for starting and stopping system processes, the  
easiest way to do this is to send the HUPsignal to the running xinetd process. To  
do this, you must first locate the process ID of the xinetd process that is currently  
running on your system using the ps (process status) command, as in the following  
example:  
# ps -eal | grep xinet  
5 S 0 2292 1 0 76 0 - 946 - ? 00:00:00 xinetd  
The example line shows the xinetd process ID number, in the fourth whitespace-  
separated field (2292in this example), which is the information that you will need to  
restart the process. After collecting this information, you can cause the xinetd  
process to reread its configuration files by executing a command like the following:  
# kill -HUP 2292  
After executing this command, the TFTP server will be started on your system in  
response to incoming TFTP requests.  
If your system is running a Linux distribution such as Red Hat Linux that starts and stops system  
processes using rc scripts, you can simply restart the xinetd by invoking these scripts in the following  
way:  
# /etc/rc.d/init.d/xinetd stop  
Then;  
# /etc/rc.d/init.d/xinetd start  
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This command will stop and then start all of the Internet services on your Linux system. You may not  
want to do this if your system is running Internet services on which other systems depend, as it will  
cause a slight interruption in those services.  
The final step in configuring the TFTP server on your Linux system is to copy the  
compiled Gentoo Linux kernel image uImage, into the /tftpboot directory so  
that the HW400c/2 can download it and boot:  
If the /tftpboot directory does not already exist, create it (as root) on  
your system using the mkdir command:  
# mkdir /tftpboot  
Copy the compiled Gentoo Linux kernel, uImage, into the /tftpboot  
directory from top level of the directory structure that was created when you  
unpacked the files in the downloaded SBE Gentoo Linux archive.  
# cp  
/opt/gentoo/usr/src/linux/arch/ppc/boot/images/uIma  
ge/tftpboot/.  
You can now proceed to Section 5.4.6 to set up communications with your SBE  
HighWire HW400c/2 board and download and boot the Linux kernel.  
5.4.6 Configuring a bootp Server  
If you are not assigning a static IP address to be stored in the HW400c/2 non-volatile  
memory, it is necessary to configure a bootp server. Bootp (a precursor to DHCP)  
will assign an IP address to a device with a specific MAC address based on what is  
found in a look up table called bootptab. At power up, the HW400c/2 will  
broadcast a BOOTP_REQUEST over the network. If a server is actively running  
bootpd, that server will look through its bootptab for a matching MAC address. If a  
matching MAC address is found, the server will send a BOOTP_REPLY to the  
HW400c/2’s MAC address and assign the IP address found in the bootptab file.  
A bootp server has two prerequisites; an actively running bootp daemon, bootpd, and  
a bootp look up table, bootptab. To check if bootpd is running on your system, enter:  
ps-eaf |grep bootpd  
If bootpdis running, you should see something similar to the following;  
root  
root  
15278 25183 0 2005 pts/1  
20587 20484 0 15:27 pts/8  
00:00:18 bootpd -d 4 -s  
00:00:00 grep bootpd  
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If you don’t already have one, the easiest way to create a bootp server is to have it  
reside on the same LAN subnet as the HW400c/2. Creating bootp relay agents for  
bootp servers on different LAN segments is beyond the scope of this document.  
To set up a server with BOOTP with TFTP ability in a standard Linux box,  
uncomment (or add) these two lines in inetd.conf)  
tftp  
dgram udp  
wait  
wait  
root  
root  
/usr/sbin/tcpd in.tftpd  
/usr/sbin/tcpd bootpd -d 4  
bootps dgram udp  
You may also run bootpd from the command line by entering;  
bootpd –i –d 4  
See the man page bootpd(8)for details. To run bootpd from the command line it  
will be necessary to disable the bootpd service if it has already been enabled and  
running through some other mechanism.  
If one does not already exist, it will be necessary to create a bootp table, bootptab,  
in the /etcdirectory. See the man page bootptab(5), and the example below.  
Example /etc/bootptab  
.default:\  
:hd=/usr/boot:bf=null:\  
:ds=10.0.0.200:\  
:sm=255.255.255.0:\  
:gw=10.0.0.2:\  
:hn:  
johnboy:ht=1:ha=00a0d6123456:ip=10.0.100.2:ef=:bf=uImage:gw=10.0.0.120  
borgus:ht=1:ha=000012342222:ip=10.0.100.3:ef=:bf=uImage:gw=10.0.0.120  
neumann:ht=1:ha=000012343333:ip=10.0.100.4:ef=:bf=uImage:gw=10.0.0.120  
5.5 Booting the HW400c/2  
There are three ways to boot the Linux OS on the HW400c/2,  
Download a tftp image with bootp  
Download a tftp image with a static IP address  
Boot a kernel from the on board Disk on Chip  
This section describes the processes necessary to boot using each of the three  
methods. In each case, the boot firmware U-boot, loaded in on-board flash, is  
necessary to initialize the HW400c/2. The boot instructions for three methods  
mentioned above diverge slightly from that point.  
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5.5.1 U-boot, Universal Bootloader  
The HW400c/2 uses a boot ROM based on Das U-boot. U-boot (Universal  
Bootloader) is an off-the-shelf freeware package found on Sourceforge.net. Many  
commands and environment variables are available in U-boot to facilitate the loading  
of the Linux kernel from various locations.  
5.5.1.1 U-boot commands  
There are four basic U-boot commands that are used to configure the environment  
variables for the boot environment. All commands are available at the debug>  
prompt. A complete list of U-boot environment variables can be found in Appendix  
help  
List all commands and environment variables  
printenv  
Print a list of all valid environment variables that are currently in use.  
This command can be shortened to print.  
In the printenvcommand, Parameters that are not set (unused), have no value assigned, or an  
incorrect value, will not be displayed.  
setenv <variable_name> <value>  
Set an environment variable_name to value. Can be shortened to  
set.  
saveenv  
Save environment variable(s) to non-volatile memory. Can be  
shortened to save.  
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5.5.1.2 U-boot environment variables  
U-boot has large number of environment variables and commands. While most can  
be used with the HW400c/2, only a few are necessary for the boot process. A  
complete list of U-boot environment variables can be found in Appendix B .  
List of basic boot variables:  
bootargs  
Boot arguments. Arguments passed to the kernel. Configures the  
HW400c/2 console (debug) port for the Linux kernel, the location of  
the IP address, if not static, the NFS device, and the NFS root path.  
Multiple bootargs need only be separated by a space (see Section  
console=ttyMM0,9600n8  
Console port configuration for  
the Linux kernel. Console tty is  
ttyMM0, 9600 baud, 8 bits, no  
parity.  
1. Without the consolebootarg, most of the Linux boot messages will not be displayed.  
2. bootarg lines of around 250 characters can be executed, however, storing the bootargs in flash  
memory is limited to 80 characters. See Table 10. If you need extra room for bootargs, please call  
SBE Technical Support.  
ip=bootp  
If bootp is used, get the IP  
address from there. Other  
settings apply. See section  
5.5.2.2 for setting static IP  
addresses  
nfsroot=/opt/gentoo  
root=/dev/nfs rw  
NFS root file path.  
NFS root device.  
bootfile  
bootcmd  
The name of the bootfile, e.g. uImage  
Boot commands executed during automatic boot (autoboot). Multiple  
commands must be separated by a semi colon followed by a space,  
followed by the next command.  
The semi colon must be backslash escaped or the second command will not be recorded. Example;  
# set bootcmd tftpboot\; bootm  
bootdelay The delay time in seconds until autoboot (executes bootcmd)  
begins. A countdown is displayed on the command line. Any  
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keystroke will stop the countdown and drop into the U-boot debug  
shell.  
baudrate  
ethaddr  
Baud rate of the HW400c/2 console (debug) port  
This unit’s MAC address.  
The MAC address is assigned by SBE at the time of manufacture, stored in non-volatile memory, and  
must not be altered. Any attempt to change the MAC address will be ignored.  
ipaddr  
This unit’s static IP address (if used) in dot notation. If not used,  
should be set to 0.0.0.0 for clarification. When using bootp, this  
address is ignored.  
serverip  
The tftp server’s IP address in dot notation. If not used, should be set  
to 0.0.0.0 for clarification. When using bootp, this address is  
ignored.  
gatewayip The gateway system’s IP address in dot notation. If not used, should  
be set to 0.0.0.0 for clarification. When using bootp, this address is  
ignored.  
netmask  
This unit’s netmask in dot notation. If not used, should be set to  
0.0.0.0 for clarification. When using bootp, the mask is ignored.  
Fixed environment variables.  
These variables will be displayed and cannot be changed.  
stdin  
Source of the HW400c/2’s standard input (keyboard).  
Default=serial(debug port).  
stdout  
stderr  
ethact  
Destination of the HW400c/2’s standard output (terminal screen).  
Default= Cannot be deleted (debug port).  
Destination of the HW400c/2’s standard error (console error  
messages). Default=serial(debug port).  
Active MAC port. Default=mv_eth0  
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5.5.1.3 Power up call trace  
For reference purposes, this is a summary of the power up calls after U-boot runs and  
jumps to _start.  
_start (…/arch/ppc/kernel/head.S)  
early_init (…/arch/ppc/kernel/setup.c)  
start_here (…/arch/ppc/kernel/head.S)  
machine_init (…/arch/ppc/kernel/setup.c)  
platform_init (…/arch/ppc/platforms/gigateak.c)  
start_kernel (…/init/main.c)  
setup_arch (…/arch/ppc/kernel/setup.c)  
gigateak_setup_arch (…/arch/ppc/platforms/gigateak.c)  
gigateak_setup_bridge  
gigateak_setup_peripherals  
gigateak_setup_ethernet  
gigateak_enable_ipmi  
1. “gigateak” is the HW400c/2 platform.  
2. U-boot jumps to address _start.Normally _startis at address 0. See System.map  
3. The call to gigateak_setup_arch()is made via the function pointer  
ppc_md.setup_arch(). This function pointer is initialized in platform_init().  
4. gigateak.cis the extra file needed for Gentoo to boot on the HW400c/2  
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5.5.2 Booting with tftp  
Tftp boot requires a tftp boot server and an NFS mounted file system. If a static IP  
address is not assigned to the HW400c/2 through the boot console, a bootp server  
may also be necessary. The bootp server, tftp server, and the NFS server functions  
may or may not be the same machine.  
5.5.2.1 U-boot parameters for tftp with bootp  
The following example shows U-boot parameters necessary for a tftp download and  
boot using a IP address obtained from a bootp server. The bootp server will assign an  
IP address, a gateway IP address, and a boot file image name from its bootptab.  
Assignments are based on the HW400c/2’s MAC address. The IP addresses listed in  
the printenv dump (from non-volatile memory) are ignored. Here the unused IP  
addresses are set to 0.0.0.0 to avoid confusion and show that they are not in use.  
# debug> printenv  
bootargs=console=ttyMM0,9600n8 ip=bootp nfsroot=/opt/gentoo \  
root=/dev/nfs rw  
bootcmd=bootp; bootm  
bootdelay=5  
baudrate=9600  
ethaddr=00:a0:d6:12:34:56  
ipaddr=0.0.0.0  
serverip=0.0.0.0  
gatewayip=0.0.0.0  
netmask=255.255.255.0  
stdin=serial  
stdout=serial  
stderr=serial  
ethact=mv_enet0  
Environment size: 288/4092 bytes  
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5.5.2.2 U-boot parameters for tftp with static IP address  
The following example shows U-boot parameters necessary for a tftp download and  
boot with a static IP address assigned using the U-boot command:  
# set ipaddr <ip address>  
Using this method, the gateway IP address (gatewayip), the tftp server IP address  
(serverip), netmask (netmask), and boot file name (bootfile) must also be  
assigned using the u-boot command set. The IP address and Server IP address  
strings must then added to the bootargsline. When all variables are configured,  
use the savecommand to store the variables in non-volatile memory.  
# debug> print  
bootargs=console=ttyMM0,9600n8 ip=$(ipaddr):$(serverip) \  
nfsroot=/opt/gentoo root=/dev/nfs rw  
bootfile=uImage  
bootcmd=tftpboot; bootm  
bootdelay=5  
baudrate=9600  
ethaddr=00:a0:d6:12:34:56  
ipaddr=10.0.0.10  
serverip=10.0.0.5  
gatewayip=10.0.0.2  
netmask=255.255.255.0  
stdin=serial  
stdout=serial  
stderr=serial  
ethact=mv_enet0  
Environment size: 320/4092 bytes  
5.5.2.3 Boot console  
During the boot process, a large number of messages appear on the console terminal  
(stdout). The following is a typical console boot screen:  
# U-boot boot output to console  
# HW400c/2  
U-Boot 1.1.2 (Apr 4 2006 - 14:01:43)  
SBE HW400c/2  
Copyright 2006 SBE, Inc.  
CPU:  
MPC7447A v1.1 @ 999.999 MHz  
BOARD: HW400c/2  
DRAM: Total SDRAM memory is 256 MB  
pci status register = 02  
Copyright 2006 SBE, Inc.  
ETH0: 00:a0:d6:12:34:563  
IP: 10.0.0.10  
BOOTARGS: console=ttyMM0,9600n8 ip=bootp nfsroot=/opt/gentoo root=/dev/nfs rw  
Hit any key to stop autoboot: 0  
Using mv_enet0 device  
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TFTP from server 10.0.0.5; our IP address is 10.0.0.10  
Filename 'uImage'.  
Load address: 0x400000  
Loading: #################################################  
#################################################  
#################################################  
#################################################  
###############################  
done  
Bytes transferred = 1551015 (17aaa7 hex)  
## Booting image at 00400000 ...  
Image Name:  
Image Type:  
Data Size:  
Linux-2.6.9  
PowerPC Linux Kernel Image (gzip compressed)  
1550951 Bytes = 1.5 MB  
Load Address: 00000000  
Entry Point: 00000000  
Verifying Checksum ... OK  
Uncompressing Kernel Image ... OK  
## Transferring control to Linux (at address 00000000) ...  
setup_arch: enter  
setup_arch: bootmem  
gigateak_setup_arch: enter  
gigateak_setup_arch: calling setup_bridge  
IGNP jumper is installed  
Host PCI is not present  
mv64x60 initialization  
mv64x60 initialization done  
gigateak_setup_peripherals: enter  
gigateak_intr_setup: enter  
gigateak_intr_setup: exit  
gigateak_setup_peripherals: exit  
In gigateak_setup_ethernet  
gigateak_setup_arch: exit  
arch: exit  
mv64460_init_irq: enter  
mv64460_init_irq: exit  
Total memory = 256MB; using 512kB for hash table (at 80400000)  
Linux version 2.6.9 (root@localhost) (gcc version 3.4.4 (Gentoo 3.4.4- r1,  
ssp-3.4.4-1.0, pie-8.7.8)) #2 Wed Apr 12 13:16:54 6PCI#1: first=0 last=0  
SBE Gigateak HW400c/2 port  
Built 1 zonelists  
Kernel command line: console=ttyMM0,9600n9 ip=bootp nfsroot=/opt/gentoo  
root=/dev/nfs rw  
PID hash table entries: 2048 (order: 11, 32768 bytes)  
time_init: decrementer frequency = 41.666666 MHz  
Console: colour dummy device 80x25  
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)  
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)  
Memory: 255104k available (2388k kernel code, 1212k data, 128k init, 0k  
highmem)  
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)  
NET: Registered protocol family 16  
PCI: Probing PCI hardware  
gigateak_map_irq 14F1:8474 slot=1 pin=1 irq=81  
gigateak_map_irq 14F1:8474 slot=1 pin=2 irq=82  
SCSI subsystem initialized  
Installing knfsd (copyright (C) 1996 [email protected]).  
Initializing Cryptographic API  
MV64x60 watchdog driver  
ipmi message handler version v33  
ipmi device interface version v33  
IPMI System Interface driver version v33, KCS version v33, SMIC version v33,  
BT version v33  
ipmi_si: Trying "kcs" at I/O port 0xca2  
ipmi_si: Trying "smic" at I/O port 0xca9  
ipmi_si: Trying "bt" at I/O port 0xe4  
ipmi_si: Unable to find any System Interface(s)  
IPMI Watchdog: driver version v33  
Copyright (C) 2004 MontaVista Software - IPMI Powerdown via sys_reboot version  
v33.  
Serial: MPSC driver $Revision: 1.00 $  
ttyMM0 at MMIO 0xf1008000 (irq = 36) is a MPSC  
ttyMM1 at MMIO 0xf1009000 (irq = 38) is a MPSC  
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize  
loop: loaded (max 8 devices)  
MV-643xx 10/100/1000 Ethernet Driver  
eth0: port 0 with MAC address 00:a0:d6:62:39:03  
eth0: RX NAPI Enabled  
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HDLC support module revision 1.17  
Cronyx Ltd, Synchronous PPP and CISCO HDLC (c) 1994  
Linux port (c) 1998 Building Number Three Ltd & Jan "Yenya" Kasprzak.  
Loading Adaptec I2O RAID: Version 2.4 Build 5go  
Detecting Adaptec I2O RAID controllers...  
megaraid cmm: 2.20.2.0 (Release Date: Thu Aug 19 09:58:33 EDT 2004)  
megaraid: 2.20.4.0 (Release Date: Mon Sep 27 22:15:07 EDT 2004)  
mice: PS/2 mouse device common for all mice  
i2c /dev entries driver  
NET: Registered protocol family 2  
IP: routing cache hash table of 2048 buckets, 16Kbytes  
TCP: Hash tables configured (established 16384 bind 32768)  
ip_conntrack version 2.1 (2048 buckets, 16384 max) - 336 bytes per conntrack  
ip_tables: (C) 2000-2002 Netfilter core team  
ipt_recent v0.3.1: Stephen Frost <[email protected]>.  
http://snowman.net/projects/ipt_recent/  
arp_tables: (C) 2002 David S. Miller  
NET: Registered protocol family 1  
NET: Registered protocol family 17  
Sending BOOTP requests . OK  
IP-Config: Got BOOTP answer from 10.0.0.5, my address is 10.0.0.10  
IP-Config: Complete:  
device=eth0, addr=10.0.0.10, mask=255.255.255.0, gw=10.0.0.2,  
host=10.0.0.10, domain=, nis-domain=(none),  
bootserver=10.0.0.5, rootserver=10.0.0.5, rootpath=  
Looking up port of RPC 100003/2 on 10.0.0.5  
Looking up port of RPC 100005/1 on 10.0.0.5  
VFS: Mounted root (nfs filesystem).  
Freeing unused kernel memory: 128k init  
INIT: version 2.86 booting  
Gentoo Linux; http://www.gentoo.org/  
Copyright 1999-2005 Gentoo Foundation; Distributed under the GPLv2  
* Mounting proc at /proc ...  
* Mounting sysfs at /sys ...  
* Mounting /dev for udev ...  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
* Populating /dev with saved device nodes ...  
* Seeding /dev with needed nodes ...  
* Setting up proper hotplug agent ...  
* Setting /sbin/udevsend as hotplug agent ...  
* Starting udevd ...  
* Populating /dev with existing devices with udevstart ...  
* Letting udev process events ...  
* Finalizing udev configuration ...  
* Mounting devpts at /dev/pts ...  
* Activating (possible) swap ...  
* Remounting root filesystem read/write ...  
* Setting hostname to localhost ...  
* Calculating module dependencies ...  
* Checking all filesystems ...  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
* Mounting local filesystems ...  
* Activating (possibly) more swap ...swapon: /dev/sda2: No such device or  
address [ !! ]  
* Setting system clock using the hardware clock [UTC] ...  
* Configuring kernel parameters ...  
* Updating environment ...  
* Cleaning /var/lock, /var/run ...  
* Cleaning /tmp directory ...  
* Caching service dependencies ...  
* Caching service dependencies ...  
* Caching service dependencies ...  
* Loading key mappings ...  
* Setting terminal encoding to UTF-8 ...  
* net.eth0: cannot start until the runlevel boot has completed  
* Starting lo  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
*
Bringing up lo ...  
[ ok ]  
[ ok ]  
* Initializing random number generator ...  
INIT: Entering runlevel: 3  
* Caching service dependencies ...  
* Starting eth0  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
[ ok ]  
*
Keeping current configuration for eth0  
* Setting system clock ...Sat Jan 1 01:01:00 PST 2005  
* Starting sshd ...  
* Starting local ...  
This is localhost.(none) (Linux ppc 2.6.9) 11:09:54  
localhost login:  
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5.5.3 Booting with Disk on Chip  
A Disk-on-Chip (DoC) flash file system device is used on the HW400c/2 for data  
storage. DoC is a high-density flash device manufactured by M-Systems  
Incorporated, and has a data bus width of 16 bits. The 128 MB device is standard on  
the HW400c/2, with the option of populating other devices for OEM configurations.  
Burst reads/writes to the DoC are not possible due to the maximum input clock frequency of the device  
(33 MHz) being slower than the 100 MHz device bus clock.  
The Disk-on-Chip may also be used for storing a Linux kernel, which in turn can be  
used for booting, making the HW400c/2 a true stand-alone blade. Limitations to the  
kernel size are in direct proportion to the size of the RAM.  
5.5.3.1 Loading the Disk on Chip  
Loading the DoC requires that the HW400c/2 is booted. You may do this with the  
standard tftp image. See Section 5.5.2  
Loading the DoC with necessary images requires the following files, all must be  
located in the same directory.  
A. docshell  
A binary DoC configuration utility from M-Systems  
B. fmt  
A script that invokes docshell to do the low-level  
formatting of the disk-on-chip and to create two binary  
partitions.  
C. wr0  
A script that invokes docshell to write uImage (kernel  
image) to binary partition 0.  
D. wr1  
A script that invokes docshell to write uRamdisk to  
binary partition 1.  
E. uImage  
The kernel image.  
F. uRamdisk The ramdisk image.  
The sequence of commands to load the DoC (where # is the prompt) is as follows:  
# ./fmt  
# ./wr0  
# ./wr1  
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5.5.3.2 Creating a uRamdisk Image  
uRamdisk is a tiny kernel image needed to boot uImagefrom the Disk on Chip.  
uRamdisk has the same intent as a ramdisk on other linux platforms. It brings up  
necessary drivers needed to access the real kernel image (uImage). After booting  
the HW400c/2, the following commands will create uRamdisk.  
# dd if=/dev/zero of=ramdisk.image bs=1024 count=32768  
# /sbin/mkfs.ext2 ramdisk.image  
# mkdir -p /mnt/ramdisk  
# mount -o loop ramdisk.image /mnt/ramdisk  
Copy everything that is needed in the ramdisk to /mnt/ramdisk. Then...  
# umount /mnt/ramdisk  
# gzip ramdisk.image  
# mkimage -T ramdisk -C gzip -d ramdisk.image.gz uRamdisk  
uRamdisk can be written to disk-on-chip with the docshell utility.  
5.5.3.3 Booting from DoC  
In U-boot, the bootargs variable should be set as follows:  
# set bootargs ip=bootp root=/dev/ram0 rw console=ttyMM0,9600n8  
ramdisk_size=65536  
# saveenv  
# Save the U-Boot variables to NVRAM  
Then boot from disk-on-chip as follows:  
# docload  
# bootm 400000 800000  
Alternately, reset the card and let auto boot run.  
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5.6 Compiling the Kernel (uImage)  
Unlike other some other Linux distributions, the Gentoo kernel can be natively  
compiled on the HW400c/2 following standard Linux kernel build procedures.  
Rebuilding the kernel is necessary when changing the kernel configuration  
parameters.  
These are the basic steps necessary to compile the kernel natively on the HW400c/2;  
1. As root, change to the kernel source directory  
# cd /usr/src/linux-2.6.9-gigateak  
2. Set the date (see man date) MMDDHHmmYYYY  
Where  
MM  
DD  
HH  
mm  
=
=
=
=
2 digit month  
2 digit day  
2 digit hour  
2 digit minutes  
4 digit year  
YYYY =  
# date 031310002006  
3. Clean up old .configfiles  
# make mrproper  
4. Create a new .configfile by copying the config-savefile to  
.config  
# cp config-save .config  
5. Create the changes in the .configfile  
# make oldconfig  
6. Compile the kernel  
# make  
7. Create the kernel binary (uImage)  
# make uImage  
8. On the host machine, copy uImageto /tftpboot  
# cp uImage /tftpboot/.  
ASCII terminals, such as Minicom and Hyperterminal, may not run menu driven kernel configuration  
utilities such as menuconfigproperly from the HW400c/2 console. There two options here, sshto  
the HW400c/2 from the host and use menuconfigfrom the host path:  
/opt/gentoo/usr/src/linux, then finish the compile from the HW400c/2, or on the  
HW400c/2, use the configutility (make config), which will step through each option individually.  
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5.6.1 Gentoo Application Packages Management  
“Portage” is the name of Gentoo's package management system. All Gentoo  
packages can be found under /usr/portage.If a package is needed, for example,  
firewall or ftp services, it can be found in the portage directory. Some of the package  
names are a bit obscure (for example, sshis found under net-misc, while  
xinetdis found under sys-apps), so some research may be necessary to locate  
the needed package.  
xinetdis not automatically installed and activated under Gentoo as under some Linux distributions  
(e.g.Redhat, Suse). Use the emergefunction to install these packages to gain network access.  
To query the running status of services, from the HW400c/2 console use the command:  
# rc-status --all  
For more information about Portage see the man page portage(5), and  
www.gentoo.org.  
There are several HOW-TO’s for various applications and services located at  
http://gentoo-wiki.com/Index:HOWTO  
5.6.1.1 Emerge  
Emerge is the command-line interface to the Portage system run natively on the  
HW400c/2. Emerge is primarily used for installing packages, and can automatically  
handle any dependencies that the desired package has. Emerge can also update the  
portage tree, making new and updated packages available. Emerge gracefully handles  
updating installed packages to newer releases as well. It handles both source and  
binary packages, and it can be used to create binary packages for distribution. It is  
similar in function to yumand BSD ports.  
Emerge is not a root-user only program. You will only need root's permissions to install, uninstall, and  
sync. Normal users can use commands to query what's installed, settings, etc. However, with this in  
mind, there are packages that should only be installed as root.  
For more information see the man page emerge(1).  
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5.6.1.2 Enable remote login with ssh  
Gentoo Linux installs sshdby default, but it is not enabled. Before starting up an  
ssh server look through the configuration file at /etc/ssh/sshd_config. One  
thing that you should consider setting is PermitRootLogin no. This disables  
logins as root, which means that in order to log in, an attacker first must login as a  
regular user (in the wheel group) and then su. This would require knowing two  
passwords as well as a username with suaccess making brute force attacks nearly  
impossible. To start sshd on the HW400c/2 console as root:  
# /etc/init.d/sshd start  
If you want to add sshdas a default daemon on every start up:  
# rc-update add sshd default  
5.6.1.3 Starting network services; xinetd  
A lot of services depend on having the xinetdservice running. Unlike sshd,  
Gentoo Linux does not install xinetdby default. Use the emergeutility to install  
xinetdand its dependencies from the HW400c/2 console as root:  
# emerge xinetd  
Wait for the console messages to stop and return to a prompt.  
To start xinetd on the HW400c/2 console:  
# /etc/init.d/xinetd start  
If you want to add xinetdas a default daemon on every start up:  
# rc-update add xinetd default  
5.6.1.4 Starting ftp services; vsftpd  
For ftp, Gnetoo Linux uses the standard Linux ftp daemon, vsftpd. Use the  
emergeutility to load the vsftpddaemon package. As root from the HW400c/2  
console:  
# emerge vsftpd  
Wait for the console messages to stop and return to a prompt.  
To start vsftp on the HW400c/2 console:  
# /etc/init.d/vsftpd start  
If you want to add xinetdas a default daemon on every start up:  
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# rc-update add vsftpd default  
You may also want to modify your /etc/vsftpd/vsftpd.conf file  
configuration and security parameters.  
Some of the basic parameters in /etc/vsftpd/vsftpd.confcan be:  
dirmessage_enable=YES  
# banner_file=/etc/vsftpd/vsftpd.banner # edit banner first  
chown_uploads=NO  
xferlog_enable=YES  
idle_session_timeout=600  
data_connection_timeout=120  
ascii_upload_enable=NO  
ascii_download_enable=NO  
chroot_list_enable=YES  
background=YES  
listen=YES  
ls_recurse_enable=NO  
More information on ftp can be found at: http://gentoo-wiki.com/HOWTO_vsftpd  
5.7 Linux Device Drivers  
SBE supplies Linux device drivers with each of its adapter cards. Installation of a  
Linux device driver will be detailed in the manuals for those products.  
The HW400c/2 local PCI bus I/O voltage is 3.3 volts only. Therefore, PTMC and  
PMC modules with 5 volt only I/O signals cannot be used on the HW400c/2  
board, and are prevented from being installed by a voltage key residing at each site.  
!
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Appendix A IPMI GetDeviceID  
Response message data to IPMI GetDeviceID request. Values in bold are changes  
from default Zircon firmware response message.  
Byte  
offset Description  
IPMI Definition  
SBE value  
Comments  
1
Completion code  
(returned in message,  
not part of data)  
N/A  
2
Device ID  
00=unspecified  
0
Implements standard IPMI commands;  
see product ID bytes to uniquely  
determine product.  
3
4
Device Revision  
[7]: SDR  
0 (no SDRs  
available)  
[3-0] can be incremented if hardware  
changes.  
[6-4]: Rsvd, must be 0  
[3:0]: device revision,  
binary encoded  
Firmware  
Revision 1  
[7] 0=normal;  
0x82 (Zircon  
default)  
HW400c/2 uses Zircon default value  
1=firmware/SDR  
update in progress  
[6-0] Major firmware  
rev, binary encoded  
Minor Firmware  
5
Firmware  
0x04 (Zircon  
Indicates Zircon stock firmware  
Revision 2  
revision, BCD encoded default is 0x03, modification level (not processor boot  
e.g. 0.3)  
ROM).  
6
7
IPMI version  
BCD encoded  
0x01 (Zircon  
default)  
0x29 (Zircon  
default)  
HW400c/2 uses Zircon default value,  
(e.g. IPMI 1.0).  
HW400c/2 uses Zircon default value  
meaning event generator, FRU  
inventory, and SDR repository.  
SBE IANA number, LSB  
Additional Device  
support  
Each bit indicates  
additional capabilities  
beyond ‘normal’ IPMI.  
IANA number  
8
9
Manufacturer ID,  
LSB  
Manufacturer ID  
0x1F (Zircon  
default is 0)  
0x04 (Zircon  
default is 0)  
0x00 (Zircon  
default is 0)  
0x75 (Zircon  
default is 0)  
IANA number  
IANA number  
SBE IANA number, MSB.  
10  
11  
Manufacturer ID,  
MSB  
Product ID, LSB  
SBE IANA number is only two bytes  
Manufacturer-specific:  
0x0000=unspecified,  
0xffff=reserved  
PLD Board Option Register (BOR)  
value (legacy HW400c/R with IPMI and  
PSB).  
12  
13  
Product ID, MSB  
Manufacturer specific  
0x03 (Zircon  
default is 0)  
PLD Port Option Register (POR) value;  
e.g. 8 ports (legacy HW400c/R with  
IPMI and PSB).  
[7-4] VxWorks boot ROM version  
number BCD (e.g. 4)  
Auxiliary Firmware Manufacturer specific  
Revision Info 1  
0x46 (Zircon  
default is N/A)  
[3-0] VxWorks boot ROM version  
number BCD (e.g. 6)  
(legacy HW400c/R with IPMI and PSB).  
14  
15  
Auxiliary Firmware Manufacturer specific  
Revision Info 2  
0x1E (Zircon  
default is N/A)  
[7-5] reserved, zero  
[4-0] day of boot ROM release, binary  
(1-31) (e.g. 30)  
(legacy HW400c/R with IPMI and PSB).  
[7-4] month of boot ROM release,  
binary (1-12) (e.g. 5)  
Auxiliary Firmware Manufacturer specific  
Revision Info 3  
0x57 (Zircon  
default is N/A)  
[3-0] MS 4 bits of year, binary (e.g.  
2004 = 0x7D4)  
(legacy HW400c/R with IPMI and PSB).  
LS 8 bits of year, binary (e.g. 2004 =  
0x7D4)  
16  
Auxiliary Firmware Manufacturer specific  
Revision Info 4  
0xD4 (Zircon  
default is N/A)  
(legacy HW400c/R with IPMI and PSB).  
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Appendix B U-Boot Environment variables  
Das U-boot was created by Wolfgang Denk as an open source boot and debug firmware. A  
complete U-boot manual can be found at http://www.denx.de/wiki/bin/view/DULG/Manual.  
This appendix is a brief list of known U-boot environment variables accessed by entering the  
command helpor ?at the debug prompt.  
Note:  
Some commands may not work on the SBE HW400c/2.  
?
- alias for 'help'  
askenv  
autoscr  
base  
- get environment variables from stdin  
- run script from memory  
- print or set address offset  
bdinfo  
boot  
bootd  
bootm  
bootp  
cmp  
- print Board Info structure  
- boot default, i.e., run 'bootcmd'  
- boot default, i.e., run 'bootcmd'  
- boot application image from memory  
- boot image via network using BootP/TFTP protocol  
- memory compare  
coninfo  
cp  
- print console devices and information  
- memory copy  
cpld  
- Microwire EEPROM Access Subsystem  
- checksum calculation  
- enable or disable data cache  
- load boot image from disk-on-chip  
- echo args to console  
crc32  
dcache  
docload  
echo  
eeprom  
erase  
flinfo  
fsinfo  
fsload  
go  
- EEPROM sub-system  
- erase FLASH memory  
- print FLASH memory information  
- print information about filesystems  
- load binary file from a filesystem image  
- start application at address 'addr'  
- print online help  
help  
icache  
icrc32  
iloop  
imd  
- enable or disable instruction cache  
- checksum calculation  
- infinite loop on address range  
- i2c memory display  
iminfo  
imls  
imm  
- print header information for application image  
- list all images found in flash  
- i2c memory modify (auto-incrementing)  
- memory write (fill)  
imw  
inm  
iprobe  
itest  
loadb  
loads  
loop  
- memory modify (constant address)  
- probe to discover valid I2C chip addresses  
- return true/false on integer compare  
- load binary file over serial line (kermit mode)  
- load S-Record file over serial line  
- infinite loop on address range  
- list files in a directory (default /)  
- memory display  
ls  
md  
mm  
- memory modify (auto-incrementing)  
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mtest  
mw  
- simple RAM test  
- memory write (fill)  
nfs  
nm  
pci  
ping  
printenv  
protect  
rarpboot  
reset  
- boot image via network using NFS protocol  
- memory modify (constant address)  
- list and access PCI Configuraton Space  
- send ICMP ECHO_REQUEST to network host  
- print environment variables  
- enable or disable FLASH write protection  
- boot image via network using RARP/TFTP protocol  
- Perform RESET of the CPU  
run  
- run commands in an environment variable  
- save environment variables to persistent storage  
- set environment variables  
- delay execution for some time  
- boot image via network using TFTP protocol  
- print monitor version  
saveenv  
setenv  
sleep  
tftpboot  
version  
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