The BT Home Hub 3A is supported in Chaos Calmer stable release, and in trunk. But installation is tricky. For the moment, until this wiki page is updated fully, further information and installation instructions may be found here:

http://openwrt.ebilan.co.uk/viewforum.php?f=5

Although sharing identical cases, the HomeHub 3.0a has totally different hardware to the BT HomeHub 3.0b and the BT Business Hub 3.0.

For identification purposes, the white boilerplate on the base of the device distinguishes the model number. The HH3.0a and the BT Business 3.0a, and the HH3.0b also have DC input sockets with a different diameter.

Please add the installation procedure here.

• Lantiq "AR9" ARX168
• http://gadgetcat.wordpress.com/category/hardware/router/

IFX GPIO Pin Usage

Serial port location:

Configuration pin location (it is nessary to boot processor in UART booting mode):

ROM VER: 1.1.3
CFG 06
NAND
NAND Read OK

ROM VER: 1.1.3
CFG 06
NAND
NAND Read OK
MC_DC15 0x00000147
MC_DC21 0x00001745
MC_DC22 0x00001616
MC_DC24 0x00000068
DDR Access auto data-eye tuning Rev 0.3a
DDR size from 0xa0000000 - 0xa3ffffff
DDR check ok... start booting...



U-Boot 1.1.5-LANTIQ-v-1.8.14 (Apr 13 2011 - 14:29:58)

Boot from NAND flash
AR9 BOARD
CLOCK CPU 333M RAM 166M
DRAM:  64 MB

 relocate_code start
 relocate_code finish.
32 MiB
In:    serial
Out:   serial
Err:   serial
Net:
switch chip id=00002599
amazon_s Switch

Type "run flash_nfs" to mount root filesystem over NFS

Hit any key to stop autoboot:  0
AMAZON_S #
AMAZON_S # help
?       - alias for 'help'
askenv  - get environment variables from stdin
base    - print or set address offset
bootm   - boot application image from memory
bootp   - boot image via network using BootP/TFTP protocol
cmp     - memory compare
cp      - memory copy
crc32   - checksum calculation
dualimage - sets openrg_start and openrg_size according to the current active image.
echo    - echo args to console
erase   - erase FLASH memory
flinfo  - print FLASH memory information
go      - start application at address 'addr'
help    - print online help
imls    - list all images found in flash
loop    - infinite loop on address range
md      - memory display
mm      - memory modify (auto-incrementing)
mtest   - simple RAM test
mw      - memory write (fill)
nand    - NAND sub-system
nboot   - boot from NAND device
nm      - memory modify (constant address)
printenv- print environment variables
protect - enable or disable FLASH write protection
rarpboot- boot image via network using RARP/TFTP protocol
reset   - Perform RESET of the CPU
run     - run commands in an environment variable
saveenv - save environment variables to persistent storage
setenv  - set environment variables
tftpboot- boot image via network using TFTP protocol
upgrade - forward/backward copy memory to pre-defined flash location
version - print monitor version
AMAZON_S #

Grounding config ping gets this

ROM VER: 1.1.3
CFG 04
UART

ram u-boot can be sent using serial port using ZModem/ or plaintext file transfer, plain text file transfer worked for me in CuteCom had problem with others

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