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Difference between revisions of "DHT-Walnut"

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DHT-Walnut pages: [[DHT-Walnut-flameman]]
+
other DHT-Walnut pages:   [[Flameman/dht-walnut]]
  
let me do the doc, please
+
== Overview ==
 +
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 [http://www.bgmicro.com/prodinfo.asp?prodid=COM1191 HERE] Oops, '''sold out''' 2/6/2006
 +
 
 +
 
 +
The board consists of:
 +
* [[PPC405 GP|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 [[Media:amd29lv040b.pdf|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 [[DHT-Walnut Known Working Hardware |here]]
 +
 
 +
GPSFan (Freenode IRC on #edev) was helpful in providing an image of the board:
 +
 
 +
[[Image:com1191.jpg]]
 +
 
 +
Some info in the pdf [http://supernova.stanford.edu/dingdong/ HERE]
 +
 
 +
 
 +
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 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 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]]
 +
* 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]]
 +
 
 +
== Bootloaders ==
 +
* [[DHT-Walnut PPCBoot|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.
 +
 
 +
[[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]
 +
 
 +
Here is a binary for those without a toolchain.
 +
 
 +
[[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-Walnut Installing The Updated Bootloader|Installing the Updated Bootloader]]
 +
 
 +
* U-Boot
 +
 
 +
U-Boot is a significantly updated replacement for ppcboot.  See: [[DHT-Walnut U Boot|U-Boot for the DHT-Walnut]].
 +
 
 +
Just in case you make a brick, there is hope: [[DHT-Walnut Jtag Bootloader Installation|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:
 +
** USB keyboard input doesnt seem to work, but events reach /dev/input/event0
 +
** [[Media:uImage]]
 +
** [[Media:config]]
 +
 
 +
* Version 2.6
 +
 
 +
See: [[DHT-Walnut 2.6 Linux Kernel|2.6 Linux kernel for the DHT-Walnut]]
 +
 
 +
== Userland ==
 +
* [[DHT-Walnut -Debian Install|Debian GNU/Linux netboot installer]] -- Install Debian from the internet to a hard disk.
 +
 
 +
== How-To's ==
 +
* How To [[DHT-Walnut Installing The Updated Bootloader|replace the bootloader with ppcboot 1.1.6]]
 +
* How To [[DHT-Walnut U Boot|replace the bootloader with U-boot 1.1.4]]
 +
* How To [[DHT-Walnut Jtag Bootloader Installation| recover from "Brickage"]]
 +
* How To [[DHT-Walnut Add J10| add the JTAG connector at J10]]
 +
* How To [[DHT-Walnut Boot Via Tftp|boot via tftp]]
 +
* How To [[DHT-Walnut Booting From Hdd|boot from Hard Disk]]
 +
* How To [[DHT-Walnut Usefull Projects|do something useful with your board]]
 +
* How To [[DHT-Walnut GPIO|control the Green Media LED and J5]]
 +
* More to come...
 +
 
 +
[[Category:Development Boards]]
 +
[[Category:DHT-Walnut]]

Latest revision as of 09:13, 13 April 2011

other DHT-Walnut pages: Flameman/dht-walnut

Overview

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 hardbreak.tgz

Bootloaders

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: U-Boot for the DHT-Walnut.

Just in case you make a brick, there is hope: 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