Difference between revisions of "DHT-Walnut"
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| − | + | 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 |
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| + | 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 [wiki:DHT-Walnut-Known-Working-Hardware here] | |
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| − | + | [[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] | |
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| − | + | 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 == | |
| + | * 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. | |
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| − | + | [[[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] | |
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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 | ||
| − | + | To use this (at your own risk) see the detailed update procedure description: [wiki:DHT-WalnutInstallingTheUpdatedBootloader 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]. | |
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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 == | == Linux Kernels == | ||
| − | * Version 2.4 | + | * 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: [wiki:DHT-Walnut2.6LinuxKernel 2.6 Linux kernel for the DHT-Walnut]. | ||
| + | |||
| + | == Userland == | ||
| + | * [wiki:DHT-Walnut-DebianInstall Debian GNU/Linux netboot installer] -- Install Debian from the internet to a hard disk. | ||
| − | + | == How-To's == | |
| + | * How To [wiki:DHT-WalnutInstallingTheUpdatedBootloader replace the bootloader with ppcboot 1.1.6] | ||
| + | * How To [wiki:DHT-Walnut-U-Boot replace the bootloader with U-boot 1.1.4] | ||
| + | * How To [wiki:DHT-WalnutJtagBootloaderInstallation recover from "Brickage"] | ||
| + | * How To [wiki:DHT-WalnutAddJ10 add the JTAG connector at J10] | ||
| + | * How To [wiki:DHT-WalnutBootViaTftp boot via tftp] | ||
| + | * How To [wiki:DHT-WalnutBootingFromHdd boot from Hard Disk] | ||
| + | * How To [wiki:DHT-WalnutUsefullProjects do something useful with your board] | ||
| + | * How To [wiki:DHT-WalnutGPIO control the Green Media LED and J5] | ||
| + | * More to come... | ||
Revision as of 22:10, 4 June 2007
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 [[[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 [wiki:DHT-Walnut-Known-Working-Hardware here]
GPSFan (Freenode IRC on #edev) was helpful in providing an image of the board:
Some info in the pdf 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]
Contents |
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.
[[[Media:patch-ppcboot-1.1.6-km2]] patch-ppcboot-1.1.6-km2]
Original sources for ppcboot: [1]
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: [wiki:DHT-WalnutInstallingTheUpdatedBootloader 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:
- USB keyboard input doesnt seem to work, but events reach /dev/input/event0
- Media:uImage
- Media:config
- Version 2.6
See: [wiki:DHT-Walnut2.6LinuxKernel 2.6 Linux kernel for the DHT-Walnut].
Userland
- [wiki:DHT-Walnut-DebianInstall Debian GNU/Linux netboot installer] -- Install Debian from the internet to a hard disk.
How-To's
- How To [wiki:DHT-WalnutInstallingTheUpdatedBootloader replace the bootloader with ppcboot 1.1.6]
- How To [wiki:DHT-Walnut-U-Boot replace the bootloader with U-boot 1.1.4]
- How To [wiki:DHT-WalnutJtagBootloaderInstallation recover from "Brickage"]
- How To [wiki:DHT-WalnutAddJ10 add the JTAG connector at J10]
- How To [wiki:DHT-WalnutBootViaTftp boot via tftp]
- How To [wiki:DHT-WalnutBootingFromHdd boot from Hard Disk]
- How To [wiki:DHT-WalnutUsefullProjects do something useful with your board]
- How To [wiki:DHT-WalnutGPIO control the Green Media LED and J5]
- More to come...
