[U-Boot] [PATCH 2/7 v11] powerpc: mpc85xx: Support booting from SD Card with SPL

York Sun
2013-08-20T17:06:37Z

> The code from the internal on-chip ROM. It loads the final uboot image
> into DDR, then jump to it to begin execution.
>
> The SPL's size is sizeable, the maximum size must not exceed the size of L2
> SRAM. It initializes the DDR through SPD code, and copys final uboot image
> to DDR. So there are two stage uboot images:
> * spl_boot, 96KB size. The env variables are copied to L2 SRAM, so that
> ddr spd code can get the interleaving mode setting in env. It loads
> final uboot image from offset 96KB.
> * final uboot image, size is variable depends on the functions enabled.
>
> Signed-off-by: Ying Zhang <b40530@freescale.com>
> ---
> Change from v10:
> - No change.
> Change from v9:
> - Mofidy drivers/mmc/fsl_esdhc_spl.c, fix checkpatch warnings.
> Change from v8:
> - No change.
> Change from v7:
> - No change.
> Change from v6:
> - Split to the patch "Support booting from SD Card with SPL" and the patch.
> - "Enable P1022DS to boot from SD Card with SPL". this patch only support.
> - booting from SD Card with SPL.
> Change from v5:
> - Add new symbol CONFIG_SPL_ENV_IMPORT for contain the functionality.
> - env_import.
> Change from v4:
> - No change.
> Change from v3:
> - No change.
> Change from v2:
> - No change.
> Change from v1:
> - Split from "boot from SD card/SPI flash with SPL".
>
> README | 4 +
> arch/powerpc/cpu/mpc85xx/u-boot-spl.lds | 5 +
> .../cpu/mpc8xxx/ddr/lc_common_dimm_params.c | 4 +
> doc/README.mpc85xx-sd-spi-boot | 81 ++++++++++++
> drivers/mmc/Makefile | 3 +
> drivers/mmc/fsl_esdhc_spl.c | 130 ++++++++++++++++++++
> drivers/mmc/mmc.c | 2 +
> include/fsl_esdhc.h | 1 +
> spl/Makefile | 3 +
> 9 files changed, 233 insertions(+), 0 deletions(-)
> create mode 100644 doc/README.mpc85xx-sd-spi-boot
> create mode 100644 drivers/mmc/fsl_esdhc_spl.c
>

Applied to u-boot-mpc85xx.git.

York