powerpc: mpc85xx: Add support for generating QorIQ pre-PBL eSDHC boot sector

[platform/kernel/u-boot.git] / arch / powerpc / cpu / mpc85xx / Kconfig

diff --git a/arch/powerpc/cpu/mpc85xx/Kconfig b/arch/powerpc/cpu/mpc85xx/Kconfig
index b6881bf..12dc03c 100644 (file)
--- a/arch/powerpc/cpu/mpc85xx/Kconfig
+++ b/arch/powerpc/cpu/mpc85xx/Kconfig
@@ -12,6 +12,59 @@ config CMD_ERRATA
          This enables the 'errata' command which displays a list of errata
          work-arounds which are enabled for the current board.
 
+config FSL_PREPBL_ESDHC_BOOT_SECTOR
+       bool "Generate QorIQ pre-PBL eSDHC boot sector"
+       depends on MPC85xx
+       depends on SYS_EXTRA_OPTIONS = SDCARD
+       help
+         With this option final image would have prepended QorIQ pre-PBL eSDHC
+         boot sector suitable for SD card images. This boot sector instruct
+         BootROM to configure L2 SRAM and eSDHC then load image from SD card
+         into L2 SRAM and finally jump to image entry point.
+
+         This is alternative to Freescale boot_format tool, but works only for
+         SD card images and only for L2 SRAM booting. U-Boot images generated
+         with this option should not passed to boot_format tool.
+
+         For other configuration like booting from eSPI or configuring SDRAM
+         please use Freescale boot_format tool without this option. See file
+         doc/README.mpc85xx-sd-spi-boot
+
+config FSL_PREPBL_ESDHC_BOOT_SECTOR_START
+       int "QorIQ pre-PBL eSDHC boot sector start offset"
+       depends on FSL_PREPBL_ESDHC_BOOT_SECTOR
+       range 0 23
+       default 0
+       help
+         QorIQ pre-PBL eSDHC boot sector may be located on one of the first
+         24 SD card sectors. Select SD card sector on which final U-Boot
+         image (with this boot sector) would be installed.
+
+         By default first SD card sector (0) is used. But this may be changed
+         to allow installing U-Boot image on some partition (with fixed start
+         sector).
+
+         Please note that any sector on SD card prior this boot sector must
+         not contain ASCII "BOOT" bytes at sector offset 0x40.
+
+config FSL_PREPBL_ESDHC_BOOT_SECTOR_DATA
+       int "Relative data sector for QorIQ pre-PBL eSDHC boot sector"
+       depends on FSL_PREPBL_ESDHC_BOOT_SECTOR
+       default 1
+       range 1 8388607
+       help
+         Select data sector from the beginning of QorIQ pre-PBL eSDHC boot
+         sector on which would be stored raw U-Boot image.
+
+         By default is it second sector (1) which is the first available free
+         sector (on the first sector is stored boot sector). It can be any
+         sector number which offset in bytes can be expressed by 32-bit number.
+
+         In case this final U-Boot image (with this boot sector) is put on
+         the FAT32 partition into reserved boot area, this data sector needs
+         to be at least 2 (third sector) because FAT32 use second sector for
+         its data.
+
 choice
        prompt "Target select"
        optional