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Difference between revisions of "DHT-Walnut"

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Experimental hack to set a hardware breakpoint inside OCD Commander [[Media:hardbreak.tgz|hardbreak.tgz]
 
Experimental hack to set a hardware breakpoint inside OCD Commander [[Media:hardbreak.tgz|hardbreak.tgz]
  
* OCD Commander macro file to dump the CPU configuration (all but PCI) [[Media:dump_config.mac|dump_config.mac]]
+
* OCD Commander macro file to dump the CPU configuration (all but PCI) [[Media:Dump_config.mac|dump_config.mac]]
* OCD Commander macro file to configure the system for recovery [[Media:recovery_config.mac|recovery_config.mac]]
+
* OCD Commander macro file to configure the system for recovery [[Media:Recovery_config.mac|recovery_config.mac]]
* CPU configuration of the system after a warm reset [[Media:warm_reset.config|warm_reset.config]]
+
* CPU configuration of the system after a warm reset [[Media:Warm_reset.config|warm_reset.config]]
* CPU configuration of the system once ppcboot v1.1.2 is up and running [[Media:ppcboot.config|ppcboot.config]]
+
* CPU configuration of the system once ppcboot v1.1.2 is up and running [[Media:Ppcboot.config|ppcboot.config]]
* CPU configuration of the system once ppcboot v1.1.6 is up and running [[Media:ppcboot_116.config|ppcboot_116.config]]
+
* CPU configuration of the system once ppcboot v1.1.6 is up and running [[Media:Ppcboot_116.config|ppcboot_116.config]]
* Example OCD logfile of the using the recovery macro to load ppcboot [[Media:ocd_recovery_log.txt|ocd_recovery_log.txt]]
+
* Example OCD logfile of the using the recovery macro to load ppcboot [[Media:Ocd_recovery_log.txt|ocd_recovery_log.txt]]
* Example console log from ppcboot v.1.1.6 running from ram after recovery macro [[Media:ocd_recovery_console_log.txt|ocd_recovery_console_log.txt]]
+
* Example console log from ppcboot v.1.1.6 running from ram after recovery macro [[Media:Ocd_recovery_console_log.txt|ocd_recovery_console_log.txt]]
  
 
== Bootloaders ==
 
== Bootloaders ==
Line 48: Line 48:
 
Here is the latest ppcboot 1.1.6 patch, as is, it will build for flashing at 0xfff80000 as a replacement for the pcboot-1.1.2 that comes with the board.
 
Here is the latest ppcboot 1.1.6 patch, as is, it will build for flashing at 0xfff80000 as a replacement for the pcboot-1.1.2 that comes with the board.
  
[[Media:patch-ppcboot-1.1.6-km2|patch-ppcboot-1.1.6-km2]]
+
[[Media:Patch-ppcboot-1.1.6-km2|patch-ppcboot-1.1.6-km2]]
  
Original sources for ppcboot: [ftp://ftp.denx.de/pub/ppcboot/ppcboot-1.1.6.tar.bz2]
+
Original sources for ppcboot: [ftp://ftp.denx.de/pub/ppcboot/ppcboot-1.1.6.tar.bz2]
  
 
  Here is a binary for those without a toolchain.
 
  Here is a binary for those without a toolchain.
  
[[Media:ppcboot1.1.6.1.bin]] ppcboot1.1.6.1.bin crc = 083fb0a3
+
[[Media:Ppcboot1.1.6.1.bin|ppcboot1.1.6.1.bin]] crc = 083fb0a3
  
 
  To use this (at your own risk) see the detailed update procedure description: [[DHT-WalnutInstallingTheUpdatedBootloader|Installing the Updated Bootloader]]
 
  To use this (at your own risk) see the detailed update procedure description: [[DHT-WalnutInstallingTheUpdatedBootloader|Installing the Updated Bootloader]]

Revision as of 03:37, 5 June 2007

other DHT-Walnut pages: DHT-Walnut-flameman

DHT-Walnut is a shortened name for the Digital Home Technologies PCB 01070201 Rev. 1.1. The DHT-Walnut board is based on the AMCC-Walnut (still available, and still expensive :P). It is a more improved board described at www.amcc.com. A "walnut" searching will inform about schematic and software. Also keep attention @ DENX: they have developed a lot for the AMCC-Walnut board, and you could find a linux patch for your problem, prettier documentation, developer suit, and much more: in case, you are suggested to have a look to their web pages.

currently available HERE Oops, sold out 2/6/2006


The board consists of:

  • PowerPC 405GP running at 266mhz
  • PC133 SDRAM slot, currently, only supports single sidded DIMMs
  • On-chip 405GP ethernet, board doesn't have an ethernet MAC address
  • DCE serial port, speeds up to 230k, only tested to 115200
  • two pci slots, keyed for 5V only cards
  • Promise Technologies PDC20265 IDE
  • 512k of boot flash AMD 29LV040B datasheet
  • 12v dc powered
  • PPC40XX JTAG on J10
  • 6.00" x 7.5" board size

The system's most common configuration seems to be:

  • System PCB
  • 32M PC133 SDRAM DIMM
    • Unknown PCI IEEE-1394 card supported by OHCI driver
    • PPCBoot v.1.1.2 in flash

Hardware that is known to work (and not to work) with this board can be found here

GPSFan (Freenode IRC on #edev) was helpful in providing an image of the board:

Com1191.jpg

Some info in the pdf HERE


Experimental hack to set a hardware breakpoint inside OCD Commander [[Media:hardbreak.tgz|hardbreak.tgz]

Bootloaders

  • ppcboot

Here is the latest ppcboot 1.1.6 patch, as is, it will build for flashing at 0xfff80000 as a replacement for the pcboot-1.1.2 that comes with the board.

patch-ppcboot-1.1.6-km2

Original sources for ppcboot: [1]

Here is a binary for those without a toolchain.

ppcboot1.1.6.1.bin crc = 083fb0a3

To use this (at your own risk) see the detailed update procedure description: Installing the Updated Bootloader
  • U-Boot
U-Boot is a significantly updated replacement for ppcboot.  See: [wiki:DHT-Walnut-U-Boot U-Boot for the DHT-Walnut].

Just in case you make a brick, there is hope: [wiki:DHT-WalnutJtagBootloaderInstallation JTAG Bootloader Installation]

Linux Kernels

  • Version 2.4
(Mostly) working kernel binary and config from jbevren with matrox fbcon and usb input support.
Current issues:
  • Version 2.6
See: 2.6 Linux kernel for the DHT-Walnut

Userland

How-To's