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EXYNOS5: Enable SPI booting. 

This patch enables SPI Booting for EXYNOS5

Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Rajeshwari Shinde 2012-11-02 01:15:38 +00:00 committed by Minkyu Kang
parent 3a8a70017d
commit 7a5337732e
3 changed files with 35 additions and 3 deletions
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2
board/samsung/smdk5250/Makefile
View File

@ -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)

31
board/samsung/smdk5250/mmc_boot.c → board/samsung/smdk5250/spl_boot.c
View File

@ -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);
copy_bl2(BL2_START_OFFSET, BL2_SIZE_BLOC_COUNT, CONFIG_SYS_TEXT_BASE);
bootmode = readl(EXYNOS5_POWER_BASE) & OM_STAT;
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)

5
include/configs/smdk5250.h
View File

@ -187,6 +187,11 @@
/* 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
#define SPI_FLASH_UBOOT_POS (CONFIG_SEC_FW_SIZE + CONFIG_BL1_SIZE)
#define CONFIG_DOS_PARTITION
#define CONFIG_IRAM_STACK 0x02050000