danitool / ls_a370-uboot_tools

Tools for Linkstation Armada-370 uboot

U-Boot tools for Linkstation Armada370

• Tools for splitting an joining the U-boot header on Armada 370 based boards.
• Tool for for recovering via UART.

Tested only on Linkstation devices based on Marvell Armada 370.

Create uboot.uart (used for recovery):

./kwbimage -x -i u-boot.buffalo-orig -o tmp/  
./mvebuimg -v 1 create -b tmp/binary.0 -o uboot/uboot.uart uart tmp/payload

rm tmp/*

Uboot recovery instructions:

1. Connect the serial port to the Linkstation LS421DE

2. At the PC execute:
   ./kwboot -b uboot/uboot.uart -t -B 115200 /dev/ttyUSB0

3. Power on the Linkstation, wait for it to load.

4. At the Uboot console execute:
   bubt uboot-spi.bak

Create uboot with a RAM initialization header from another uboot:

./kwbimage -x -i uboot/u-boot.buffalo-orig -o tmp/
mv tmp/payload tmp/payload.orig

./kwbimage -x -i uboot/u-boot.buffalo-1.34_voodoo -o tmp/
./mvebuimg -v 1 create -b tmp/binary.0 -o uboot/uboot-voodoo.spi spi tmp/payload.orig
rm tmp/*

doimage:

mvebuimg may create a non working bootloader, in this case we can use doimage which is able to recreate the original bootloader (exact copy).

With doimage first we need to prepend 12 bytes to the binary.0 header, for some reason they're lost when kwbimage splits the bootloader.

In the Buffalo LS421DE, these bytes are: 020000005B00000068000000 (offsets 0x24-0x2f)
In the Buffalo LS220DE, these bytes are: 020000005B00000000000000 (offsets 0x24-0x2f)

• Command example for using doimage with u-boot 1.34:

echo -ne \\x02\\x00\\x00\\x00\\x5B\\x00\\x00\\x00\\x68\\x00\\x00\\x00 > binary.1
cat binary.0 >> binary.1

./doimage -T flash -D 0x600000 -E 0x6A0000 -G binary.1 payload u-boot.bin

• For LS421DE 1.84, LS220DE 0.38:

./doimage -T flash -D 0x0 -E 0x0 -G binary.1 payload u-boot.bin