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| author | Lukasz Majewski <lukma@denx.de> | 2020-07-10 09:49:32 +0200 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2020-07-16 11:20:33 +0200 |
| commit | 949feef062f21d19ecc76b48fdeb8f3099e16df6 (patch) | |
| tree | 06fe9eacde66dd9c4bec9b94777c7d71309e0e97 | |
| parent | 08556f829f48225388c2bb6d7b9d02ab60cc9e56 (diff) | |
| download | u-boot-949feef062f21d19ecc76b48fdeb8f3099e16df6.tar.gz u-boot-949feef062f21d19ecc76b48fdeb8f3099e16df6.tar.xz u-boot-949feef062f21d19ecc76b48fdeb8f3099e16df6.zip | |
arm: Add extra boot device (UART) to run Ymodem u-boot.img boot on XEA (imx28)
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>
| -rw-r--r-- | board/liebherr/xea/xea.c | 1 | ||||
| -rw-r--r-- | configs/imx28_xea_defconfig | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/board/liebherr/xea/xea.c b/board/liebherr/xea/xea.c index 8159f3a2d9..4062c6fb82 100644 --- a/board/liebherr/xea/xea.c +++ b/board/liebherr/xea/xea.c @@ -116,6 +116,7 @@ void board_boot_order(u32 *spl_boot_list) { spl_boot_list[0] = BOOT_DEVICE_MMC1; spl_boot_list[1] = BOOT_DEVICE_SPI; + spl_boot_list[2] = BOOT_DEVICE_UART; } int spl_start_uboot(void) diff --git a/configs/imx28_xea_defconfig b/configs/imx28_xea_defconfig index b879de5042..38f3fa6871 100644 --- a/configs/imx28_xea_defconfig +++ b/configs/imx28_xea_defconfig @@ -36,6 +36,7 @@ CONFIG_SPL_MMC_TINY=y CONFIG_SPL_DM_SPI_FLASH=y CONFIG_SPL_OS_BOOT=y CONFIG_SPL_SPI_LOAD=y +CONFIG_SPL_YMODEM_SUPPORT=y CONFIG_HUSH_PARSER=y CONFIG_CMD_SPL=y CONFIG_CMD_ASKENV=y |