This commit enables imx28 based XEA board's u-boot.sb (SPL) to download u-boot proper (u-boot.img) via Ymodem protocol. This is extremely useful in the recovery scenario where u-boot.sb is downloaded via uuu utility to SDRAM [*], and then one can upload u-boot proper via serial console to fully debrick the device. Note - debricking procedure of imx28 devices:
- NXP's original USB based tools (like mxsldr or uuu) expect single u-boot.sb which is a relic of the old U-Boot (~2013) without SPL and U-Boot proper distinction.
[*] On Host:
cat << EOF > imx28_xea.lst uuu_version 1.3.0 SDPS: boot -f /srv/tftp/xea/u-boot.sb SDPU: done EOF Please start picocom: sudo picocom -b 115200 -s "sz -vv" /dev/ttyUSB1 sudo ./uuu/uuu -V imx28_xea.lst On the U-boot console one shall see: Trying to boot from UART CCC Then please press CTRL+A, S and type u-boot.img Signed-off-by: Lukasz Majewski lukma@denx.de Acked-by: Peng Fan peng.fan@nxp.com
Applied to u-boot-imx, master, thanks !
Best regards, Stefano Babic