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>

diff --git a/board/samsung/smdk5250/Makefile b/board/samsung/smdk5250/Makefile
index 1474fa8a15a7b3825c356a843f5626a1851765e2..47c6a5a46b51b805bddedd5f06ff9de33bd61e47 100644 (file)
--- 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 449a919d5f223a632d3c1b00b78fe99bbdb421f9..d8f3c1e184881f8c1a2a32a509a3269ecc61b169 100644 (file)
--- 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 4973c330ce6d7c689fa55707409cc5f84d95493b..e412da8c9d8f7e18a568a64f678850a6616f166f 100644 (file)
--- a/include/configs/smdk5250.h
+++ b/include/configs/smdk5250.h
@@ -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