-----Original Message----- From: U-Boot u-boot-bounces@lists.denx.de On Behalf Of Pali Rohár Sent: Tuesday, April 5, 2022 7:11 PM To: Priyanka Jain priyanka.jain@nxp.com; Qiang Zhao qiang.zhao@nxp.com; Shengzhou Liu shengzhou.liu@nxp.com; Alexander Graf agraf@csgraf.de; Bin Meng bmeng.cn@gmail.com; Wolfgang Denk wd@denx.de; Sinan Akman sinan@writeme.com Cc: u-boot@lists.denx.de Subject: [PATCH 1/2] powerpc: mpc85xx: Add support for generating QorIQ pre- PBL eSDHC boot sector
QorIQ U-Boot binary for SD card booting compiled during build process (either u- boot.bin or u-boot-with-spl.bin) cannot be directly loaded by QorIQ pre-PBL BootROM. Compiled U-Boot binary first needs to be processed by Freescale boot_format tool as described in doc/README.mpc85xx-sd-spi-boot
BootROM requires that image on SD card must contain special boot sector. Implement support for generating this special boot sector directly in U-Boot start code. Boot sector needs to be at the beginning of the image, so when compiling only proper U-Boot without SPL then it needs to be in proper U-Boot. When compiling SPL with proper U-Boot then it needs to be only in SPL.
Support can be enabled by a new config option FSL_PREPBL_ESDHC_BOOT_SECTOR. Via other two additional options FSL_PREPBL_ESDHC_BOOT_SECTOR_START and FSL_PREPBL_ESDHC_BOOT_SECTOR_DATA it is possible to tune how final U-Boot image could be stored on the SD card.
Signed-off-by: Pali Rohár pali@kernel.org
Kindly rebase the series to master.
Regards Priyanka