U-Boot: How to bring it on the Blackfin

Load u-boot via UART

• Set boot mode to 111.

• Windows: Use "LdrViewer" and instructions from https://docs.blackfin.uclinux.org/doku.php?id=bootloaders:u-boot:loading#ldrviewer

• Linux: Assuming /dev/ttyUSB2 is the serial connection to the Blackfin,

bfin-uclinux-ldr -l u-boot.ldr /dev/ttyUSB2 && kermit ~/stuff/ttyUSB2
                               ^serial device         ^kermit conf file

The required files can be found at: https://blackfin.uclinux.org/gf/project/bluetechnix/frs/

Flash U-Boot with U-Boot

set serverip 192.168.0.56
set ipaddr 192.168.0.10
tftp 1000000 uboot+uImage.bin; protect off 0x20000000 +$(filesize); erase 0x20000000 +$(filesize); cp.b 1000000 20000000 $(filesize);

Afterwards set boot mode to 000 and press reset.

Load U-Boot over serial in Kermit

• In U-boot, type

loadb

• In Kermit, press Ctrl+\

• On Kermit prompt, type for example

send /tftpboot/u-boot.ldr

or

send /tftpboot/u-boot.bin

• On Kermit prompt, type

c

BlackSheep

• Load and run
  • Set x-modem-protocol
  • Send uBoot.ldr

xmr uboot.ldr
exec -de uboot.ldr

• Load, store and run
  • Set x-modem-protocol
  • Send uBoot.hex

xmr uboot.hex
flash -a uboot.hex
load 1

Flash with gnICE

See GnIce.