[U-Boot] [PATCH 4/7 v11] powerpc : spi flash : Support to start from eSPI with SPL

York Sun
2013-08-20T17:06:49Z

> This patch introduces SPL to enable a loader stub that being loaded by
> 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:
> - Modify drivers/mtd/spi/fsl_espi_spl.c, fix checkpatch warnings.
> Change from v8:
> - No change.
> Change from v7:
> - No change.
> Change from v6:
> - No change.
> Change from v5:
> - Split from "powerpc/p1022ds: boot from spi flash with SPL".
> - this patch add the capability starting from eSPI with SPL.
> 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".
>
> drivers/mtd/spi/Makefile | 1 +
> drivers/mtd/spi/fsl_espi_spl.c | 77 ++++++++++++++++++++++++++++++++++++++++
> drivers/mtd/spi/spi_flash.c | 2 +
> 3 files changed, 80 insertions(+), 0 deletions(-)
> create mode 100644 drivers/mtd/spi/fsl_espi_spl.c

Applied to u-boot-mpc85xx.git.

York