Difference between revisions of "DHT-Walnut"

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other DHT-Walnut pages: [[DHT-Walnut-flameman]]
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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.
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let me do the doc, please
 
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currently available [http://www.bgmicro.com/prodinfo.asp?prodid=COM1191 HERE] Oops, '''sold out''' 2/6/2006
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The board consists of:
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* [[PPC405 GP|PowerPC 405GP]] running at 266mhz
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* PC133 SDRAM slot, currently, only supports single sidded DIMMs
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* On-chip 405GP ethernet, board doesn't have an ethernet MAC address
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* DCE serial port, speeds up to 230k, only tested to 115200
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* two pci slots, keyed for 5V only cards
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* Promise Technologies [[PDC20265]] IDE
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* 512k of boot flash AMD 29LV040B [[Media:amd29lv040b.pdf|datasheet]]
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* 12v dc powered
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* PPC40XX [[JTAG]] on J10
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* 6.00" x 7.5" board size
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The system's most common configuration seems to be:
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* System PCB
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* 32M PC133 SDRAM DIMM
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** Unknown PCI IEEE-1394 card supported by OHCI driver
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** PPCBoot v.1.1.2 in flash
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Hardware that is known to work (and not to work) with this board can be found [[DHT-Walnut Known Working Hardware |here]]
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GPSFan (Freenode IRC on #edev) was helpful in providing an image of the board:
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[[Image:com1191.jpg]]
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Some info in the pdf [http://supernova.stanford.edu/dingdong/ HERE]
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Experimental hack to set a hardware breakpoint inside OCD Commander [[Media:hardbreak.tgz|hardbreak.tgz]
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* OCD Commander macro file to dump the CPU configuration (all but PCI) [[Media:Dump_config.mac|dump_config.mac]]
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* OCD Commander macro file to configure the system for recovery [[Media:Recovery_config.mac|recovery_config.mac]]
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* CPU configuration of the system after a warm reset [[Media:Warm_reset.config|warm_reset.config]]
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* CPU configuration of the system once ppcboot v1.1.2 is up and running [[Media:Ppcboot.config|ppcboot.config]]
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* CPU configuration of the system once ppcboot v1.1.6 is up and running [[Media:Ppcboot_116.config|ppcboot_116.config]]
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* Example OCD logfile of the using the recovery macro to load ppcboot [[Media:Ocd_recovery_log.txt|ocd_recovery_log.txt]]
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* 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]]
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== Bootloaders ==
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* ppcboot
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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.
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[[Media:Patch-ppcboot-1.1.6-km2|patch-ppcboot-1.1.6-km2]]
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Original sources for ppcboot: [ftp://ftp.denx.de/pub/ppcboot/ppcboot-1.1.6.tar.bz2]
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Here is a binary for those without a toolchain.
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[[Media:Ppcboot1.1.6.1.bin|ppcboot1.1.6.1.bin]] crc = 083fb0a3
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To use this (at your own risk) see the detailed update procedure description: [[DHT-WalnutInstallingTheUpdatedBootloader|Installing the Updated Bootloader]]
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* U-Boot
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U-Boot is a significantly updated replacement for ppcboot.  See: [wiki:DHT-Walnut-U-Boot U-Boot for the DHT-Walnut].
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Just in case you make a brick, there is hope: [wiki:DHT-WalnutJtagBootloaderInstallation JTAG Bootloader Installation]
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== Linux Kernels ==
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* Version 2.4
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(Mostly) working kernel binary and config from jbevren with matrox fbcon and usb input support.
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Current issues:
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** USB keyboard input doesnt seem to work, but events reach /dev/input/event0
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** [[Media:uImage]]
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** [[Media:config]]
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* Version 2.6
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See: [[DHT-Walnut2.6LinuxKernel|2.6 Linux kernel for the DHT-Walnut]]
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== Userland ==
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* [[DHT-Walnut-DebianInstall|Debian GNU/Linux netboot installer]] -- Install Debian from the internet to a hard disk.
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== How-To's ==
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* How To [[DHT-WalnutInstallingTheUpdatedBootloader|replace the bootloader with ppcboot 1.1.6]]
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* How To [[DHT-Walnut-U-Boot|replace the bootloader with U-boot 1.1.4]]
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* How To [[DHT-WalnutJtagBootloaderInstallation| recover from "Brickage"]]
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* How To [[DHT-WalnutAddJ10| add the JTAG connector at J10]]
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* How To [[DHT-WalnutBootViaTftp|boot via tftp]]
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* How To [[DHT-WalnutBootingFromHdd|boot from Hard Disk]]
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* How To [[DHT-WalnutUsefullProjects|do something useful with your board]]
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* How To [[DHT-WalnutGPIO|control the Green Media LED and J5]]
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* More to come...
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Revision as of 10:34, 5 June 2007

DHT-Walnut pages: DHT-Walnut-flameman

let me do the doc, please