Hi,
On Tue, Jul 31, 2012 at 4:01 AM, Rajeshwari Shinde
<rajeshwar...@samsung.com> wrote:
> This patch enables SPI Booting for EXYNOS5
>
> Signed-off-by: Rajeshwari Shinde <rajeshwar...@samsung.com>
> ---
> Changes in V2:
> - None.
> board/samsung/smdk5250/Makefile | 2 +-
> board/samsung/smdk5250/{mmc_boot.c => spl_boot.c} | 31 +++++++++++++++++++-
> include/configs/smdk5250.h | 5 +++
> 3 files changed, 35 insertions(+), 3 deletions(-)
> rename board/samsung/smdk5250/{mmc_boot.c => spl_boot.c} (66%)
>
> diff --git a/board/samsung/smdk5250/Makefile b/board/samsung/smdk5250/Makefile
> index 1474fa8..47c6a5a 100644
> --- a/board/samsung/smdk5250/Makefile
> +++ b/board/samsung/smdk5250/Makefile
> @@ -36,7 +36,7 @@ COBJS += smdk5250.o
> endif
>
> ifdef CONFIG_SPL_BUILD
> -COBJS += mmc_boot.o
> +COBJS += spl_boot.o
> endif
>
> SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
> diff --git a/board/samsung/smdk5250/mmc_boot.c
> b/board/samsung/smdk5250/spl_boot.c
> similarity index 66%
> rename from board/samsung/smdk5250/mmc_boot.c
> rename to board/samsung/smdk5250/spl_boot.c
> index 449a919..d8f3c1e 100644
> --- a/board/samsung/smdk5250/mmc_boot.c
> +++ b/board/samsung/smdk5250/spl_boot.c
> @@ -23,6 +23,16 @@
> #include<common.h>
> #include<config.h>
>
> +enum boot_mode {
> + BOOT_MODE_MMC = 4,
> + BOOT_MODE_SERIAL = 20,
> + /* Boot based on Operating Mode pin settings */
> + BOOT_MODE_OM = 32,
> + BOOT_MODE_USB, /* Boot using USB download */
> +};
> +
> + typedef u32 (*spi_copy_func_t)(u32 offset, u32 nblock, u32 dst);
> +
> /*
> * Copy U-boot from mmc to RAM:
> * COPY_BL2_FNPTR_ADDR: Address in iRAM, which Contains
> @@ -30,9 +40,26 @@
> */
> void copy_uboot_to_ram(void)
> {
> - u32 (*copy_bl2)(u32, u32, u32) = (void *) *(u32 *)COPY_BL2_FNPTR_ADDR;
> + spi_copy_func_t spi_copy;
> + enum boot_mode bootmode;
> + u32 (*copy_bl2)(u32, u32, u32);
> +
> + bootmode = readl(EXYNOS5_POWER_BASE) & OM_STAT;
>
> - copy_bl2(BL2_START_OFFSET, BL2_SIZE_BLOC_COUNT, CONFIG_SYS_TEXT_BASE);
> + switch (bootmode) {
> + case BOOT_MODE_SERIAL:
> + spi_copy = *(spi_copy_func_t *)EXYNOS_COPY_SPI_FNPTR_ADDR;
> + spi_copy(SPI_FLASH_UBOOT_POS, CONFIG_BL2_SIZE,
> + CONFIG_SYS_TEXT_BASE);
> + break;
> + case BOOT_MODE_MMC:
> + copy_bl2 = (void *) *(u32 *)COPY_BL2_FNPTR_ADDR;
> + copy_bl2(BL2_START_OFFSET, BL2_SIZE_BLOC_COUNT,
> + CONFIG_SYS_TEXT_BASE);
> + break;
> + default:
> + break;
> + }
> }
>
> void board_init_f(unsigned long bootflag)
> diff --git a/include/configs/smdk5250.h b/include/configs/smdk5250.h
> index 29b7ac6..4b9093c 100644
> --- a/include/configs/smdk5250.h
> +++ b/include/configs/smdk5250.h
> @@ -192,6 +192,11 @@
> /* U-boot copy size from boot Media to DRAM.*/
> #define BL2_START_OFFSET (CONFIG_BL2_OFFSET/512)
> #define BL2_SIZE_BLOC_COUNT (CONFIG_BL2_SIZE/512)
> +
> +#define OM_STAT (0x1f << 1)
> +#define EXYNOS_COPY_SPI_FNPTR_ADDR 0x02020058
Would these two be better in exynos5.h or similar? They don't seem
like a board feature?
> +#define SPI_FLASH_UBOOT_POS (CONFIG_SEC_FW_SIZE + CONFIG_BL1_SIZE)
> +
> #define CONFIG_DOS_PARTITION
>
> #define CONFIG_IRAM_STACK 0x02050000
> --
> 1.7.4.4
>
Regards,
Simon
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