|    |  +----+ Bottom of EEPROM       -- sysNvRamGet/sysNvRamGet.bEPlease refer to the .I "Tornado User's Guide" for more information on booting VxWorks..SS "SDRAM"The IXDP425 board is equipped with 133MHz SDRAM - 256 Mbytes total (2 Banks, 4 chips, 512Mbit) The devices used shall be Micron MT48LC16M16A2TG-7E16Meg x 16bits.143Mhz Grade, Cas Latency (Read) = 3. www.micronsemi.com/datasheets/sdramds.html.SS "Interrupts"All interrupts are handled via the internal interrupt controller module.Interrupt connections, enabling, and disabling are performed using the standard intArchLib routines.  The interrupt controller driver is provided in ixp425IntrCtl.c..SS "IXDP425 Memory Map".CSResource			Base Address=====================================================================SDRAM			       	0x00000000*SDRAM Alias 1			0x10000000SDRAM Alias 2			0x20000000SDRAM Alias 3			0x30000000PCI space    			0x48000000Flash/Expansion Bus		0x50000000*Queue Manager			0x60000000PCI controller			0xc0000000Expansion Bus Config		0xc4000000UART1				0xc8000000UART2				0xc8001000PMU				0xc8002000Interrupt Controller		0xc8003000GPIO				0xc8004000Timer				0xc8005000WAN/HSS    			0xc8006000Ethernet     A			0xc8007000Ethernet     B			0xc8008000Ethernet MAC A LXT971A (port1)	0xc8009000Ethernet MAC B LXT971A (port2)	0xc800a000USB Controller			0xc800b000SDRAM Controller		0xcc000000.CE*Note: Flash initially resides at 0x00000000 and moves up to 0x50000000after bootup..SS "Serial Configuration"There are two serial ports on the IXDP425 evaluation board.The default configuration is 9600 baud, 8 data bits, no parity, 1 stopbit. By default UART 1 is used as the VxWorks console port, and UART 0 isused as the serial debug port for the WDB agent, or is available to theapplication if SERIAL_DEBUG is not defined.UART 1 is capable of supporting rates as high as 231K baud, while UART0 (High Speed Uart) is capable of supporting rates as high as 926.1K baud. .SS "SCSI Configuration"The IXDP425 development board does not have any on-card SCSI devices.  This BSP does not support SCSI..SS "Network Configuration"The IXDP425 evaluation board provides two high speed ethernet ports. The two high speed ethernet ports are LXT791A PHYS connectedto two MII ports and run at 10/100Mbit/s each.Each PHY has two LEDs on its RJ-45 connector. The first LED indicates link statusand activity. This LED is illuminated (solid) when valid link pulses are received and no other activity is present.  The LED flashes when a valid link exists and data is being received or transmitted.  The 2nd LED indicates the link speed as determined during auto-negotiation (or link pulse inspection). .SS "VME Access"The IXP425 development board does not have VME bus support..SS "PCI Access"PCI v2.2 bus: 32-bit Address/Data bus. Capable of running at 33 and 66MHz.  A built-in arbiter supports up to 4 external bus masters.The IXDP425 BSP supports, and has been tested with PCI Ethernet cardscontaining the Intel 8255X Ethernet network device. This is a fast Ethernetcontroller capable of operating at 10Base-T and 100Base-T..SS "7-Segment Hex Display"The Seven segment display is used to track boot progress. The displayed values havethe following meanings.CS0001 - Cold Boot entry0002 - Debug uart initialized0003 - reserved0004 - reserved0005 - reserved0006 - reserved0007 - Initializing SDRAM0008 - reserved0009 - SDRAM Initialization complete                 Starting basic hw config000C - warm start entry point, relocate flash000D - optionally enable MMU - Not needed.000E - Starting vxWorks boot0010 - Starting sysHwInit00011 - Finished cachelibinit, starting mmu init0012 - Finished mmuinit, starting autosize init0013 - finished autosize and sysHwInit00014 - starting sysHwInit0015 - finished disabling interrupts,starting sysSerialHwInit0016 - Finished sysSerialHwInit, starting sysPciInit (if PCI is enabled)0017 - finished sysPciInit, starting sysPciAssignAddrs0018 - finished sysPciAssignAddrs, starting sysEnableIRQMasks0019 - finished sysEnableIRQMasks, and finished sysHwInit0020 - sysHwInit2 begin, intLibInit started0021 - intLibInit returned, starting ixp425IntDevInit0022 - ixp425IntDevInit finished, starting sysSerialHwInit20023 - finished sysSerialHwInit2, starting sysPciIntConnect0024 - finished sysPciIntConnect, starting sysPciIntEnable0025 - finished sysPciIntEnable, starting sysLanPciInit0026 - finished sysLanPciInit, starting ixdp425EthEndMuxInit (if supported)0027 - finished all of sysHwInit2.CE.SS "BOOT DEVICES"Supported boot devices are:.CS'fei' - 10/100BaseT PCI Ethernet  'ixe' - 10/100BaseT Intel in chip Ethernet.CE.SH "SPECIAL CONSIDERATIONS".SS "Cache/MMU considerations"The extra state VM_STATE_CACHEABLE_MINICACHE is available on theIXP425. Setting pages to this state usingvmStateSet() will result in those pages being cached in themini-cache, and not in the main data cache.  CallingcacheInvalidate(DATA_CACHE, ENTIRE_CACHE) will also invalidate themini-cache, but in all other aspects, no support is provided forthe mini-cache, and the user is entirely responsible for ensuringcache coherency..SS "Timestamp support"The IXDP425 BSP supports a system clock timer through hardwaretimer 1. The timestamp clock is supported through the free runningup-timer..bS                        _______		 _____________	hardware                TIMER 1		   UP-TIMERclock                   _______		 _____________                           |		        |interface -----------------------------------------------------                |                            |                |                            |software     _______                    _____________clock(s)     sysClk                     timeStampClk             _______                    _____________.bE.SS "CPU Speed/Timers"The IXDP425 BSP uses the auxiliary clock for ixe MII ethernet functionality.  .SS "Divide by Zero Exception"The ARM architecture does not provide for an integer divide by zeroexception.  Consequently, no exception is generated when an integerdivide by zero operation is performed programmatically..SS "Known limitations/problems"Console Shell (INCLUDE_SHELL) doesn't restart when telnet session disconnects.        (Target Shell still works)Reset switch does not work if visionProbe is connected and visionClick has been running.Intel Ethernet devices do not provide support for polled mode. This means WDB willnot work with the system suspended..SS "BOARD LAYOUT"The diagram below shows the board layout for the IXDP425 Development Boardcontaining the peripherals..bS  _______________________________________________________________________________ |                                                                               | |                                            +-------------------------------+  | |                                            | ---------- PCI SLOT --------- |  | |                     +---+ +---+            +-------------------------------+  | |  +--------------\   |   | |   |  J                                            | |  |              |   |   | |   | :P         +-------------------------------+  | |  |              |   |   | |   |  5         | ---------- PCI SLOT --------- |  | |  |              |   +---+ +---+            +-------------------------------+  | |  |    IXP425    |     SDRAM   5                                               | |  |              |   +---+ +---+            +-------------------------------+  | |  |              |   |   | |   |            | ---------- PCI SLOT --------- |  | |  |              |   |   | |   |            +-------------------------------+  | |  +--------------+   |   | |   |                                               | |  ._.  . .           +---+ +---+            +-------------------------------+  | | G._. G. .           JP9                    | ---------- PCI SLOT --------- |  | | P._. P. .      JP10  :           J11       +-------------------------------+  | | I._. I. .        :       +- # #  :|:                             _.. JP3    : | | O._. O. .               G+-                1.-.2 +--------------------------+ | |  ._.  . .     #         P+- # #             .-.  |                          | |   | H._. H. . +-----------+ 1+-                 . .  |                          | |   | E._. E. . |           | 5+- # #             . .  |                          | |   | A._. A. . |           |  +-                 . .  |                          | |   | D._. D. . |  FLASH    |  +- # #           J . .  |                          | |   | E._. E. . |           |  +-               8 . .  |                          | |   | R._. R. . |           |     # #             . .  |                          | | |  ._.  . . +-----------+  +-                 . .  |                          | | | A._. B. .    JP11       G+- # #             . .  |                          | | |  ._.          .._       P+-                 . .  |                          | | |  ._.   JP12             0+- # #           23. .24|                          | | |        _..              7+-                      |                          | | |                          +- # #            1.-.2 |  ++     POWER            | | |                          +-                 .-.  |  ||     MODULE           | | |                          +-                 .-.  |  ||                      | | |                                             . .  |  ||                      | | |+___________________+  +-------+             . .  |  ||                      | | ||                   |  |  LED  |             . .  |  ||                      | | ||                   |  |12 - 15|  +--+       . .  |  ||                      | | || +---------------+ |  +-------+  |J |       . .  |  ||                      | | || |               | |             |T |+--+   . .  |  ||                      | | || +---------------+ |  +-------+  |A ||B | J . .  |  ||                      | | ||                   |  |  LED  |  |G ||S | 9 . .  |  ||                      | | || U        +------+ |  | 8 - 11|  |  ||C |   . .  |  ||                      | | || T        |      | |  +-------+  |I ||A |   . .  |  ++                      | | || O        +------+ |             |C ||N |   . .  |                          | | || P                 |  +-------+  |E |+--+   . .  |                          | | || I                 |  |  LED  |  +--+       . .  |                          | | || A                 |  | 4 - 7 |             . .  |                          | | ||                   |  +-------+             . .  |                          | | || 2                 |                        . .  |                          | | ||                   |  +-------+      JP4    . .  |                          | | || M                 |  |  LED  |       :     . .  |                          | | || O                 |  | 0 - 3 |           43. .44|                          | | || D                 |  +-------+                  +--------------------------+ | || U                 |    : JP7                                                 | || L                 |+---------------------++---------------------+     vxWorks| || E                 ||                     ||                     |     Console| ||                   || +-----------------+ || +-----------------+ |      ______| || : JP13            || |                 | || |                 | |    P| SLOW | ||                   || +-----------------+ || +-----------------+ |    1|SERIAL| ||                   ||                     ||                     |     | PORT | ||                   || E                   || E                   | :   |______| ||                   || T                   || T                   | J          | ||                   || H                   || H                   | P    ______| ||                   || E                   || E                   | 2   | FAST | ||                   || R                   || R                   |    P|SERIAL| ||                   || N                   || N                   |    2| PORT | ||                   || E                   || E                   |     |______| ||                   || T                   || T                   |            | ||                   ||                     ||                     |          # | ||                   || 0                   || 1                   |          # | ||                   ||                     ||                     |          # | ||                   ||                     ||                     |          # | ||                   ||                     ||                     | +-----+  # | ||                   ||                     ||                     | | USB |  # | ||                   ||                     ||                     | | PORT| R  | ||___________________||_____________________||_____________________|_|_____|____|.bE.SH "See Also".tG "Getting Started,".pG "Configuration.".SH "BIBLIOGRAPHY".I "Intel IXP425 I/O Companion Chip Developer's Manual",.I "Intel IXP425 I/O Companion Chip Datasheet",.I "Intel XScale Microarchitecture, Programmers Reference Manual",.I "GNUPro Toolkit Documentation",