In case the iMX8M boot from eMMC boot partition and the primary image is corrupted, the BootROM is capable of starting a secondary image in the other eMMC boot partition as a fallback. However, the BootROM leaves the eMMC BOOT_PARTITION_ENABLE setting as it was, i.e. pointing to the boot partition containing the corrupted image, and the BootROM does not provide any indication that this sort of fallback occured. According to AN12853 i.MX ROMs Log Events, Rev. 0, May 2020, it is possible to determine whether fallback event occurred by parsing the ROM event log. In case ROM event ID 0x51 is present, fallback event did occur. This patch implements ROM event log parsing and search for event ID 0x51 for all iMX8M SoCs, and based on that corrects the eMMC boot partition selection. This way, the SPL loads the remaining boot components from the same eMMC boot partition from which it was started, even in case of the fallback. Signed-off-by: Marek Vasut marex@denx.de Cc: Faiz Abbas faiz_abbas@ti.com Cc: Harald Seiler hws@denx.de Cc: Lokesh Vutla lokeshvutla@ti.com Cc: Simon Glass sjg@chromium.org Cc: Fabio Estevam festevam@gmail.com Cc: Peng Fan peng.fan@nxp.com Cc: Stefano Babic sbabic@denx.de Cc: Ye Li ye.li@nxp.com
Applied to u-boot-imx, master, thanks !
Best regards, Stefano Babic