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/mmc_boot.c
deleted file mode 100644 (file)
index 449a919..0000000
--- a/board/samsung/smdk5250/mmc_boot.c
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (C) 2012 Samsung Electronics
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include<common.h>
-#include<config.h>
-
-/*
-* Copy U-boot from mmc to RAM:
-* COPY_BL2_FNPTR_ADDR: Address in iRAM, which Contains
-* Pointer to API (Data transfer from mmc to ram)
-*/
-void copy_uboot_to_ram(void)
-{
-       u32 (*copy_bl2)(u32, u32, u32) = (void *) *(u32 *)COPY_BL2_FNPTR_ADDR;
-
-       copy_bl2(BL2_START_OFFSET, BL2_SIZE_BLOC_COUNT, CONFIG_SYS_TEXT_BASE);
-}
-
-void board_init_f(unsigned long bootflag)
-{
-       __attribute__((noreturn)) void (*uboot)(void);
-       copy_uboot_to_ram();
-
-       /* Jump to U-Boot image */
-       uboot = (void *)CONFIG_SYS_TEXT_BASE;
-       (*uboot)();
-       /* Never returns Here */
-}
-
-/* Place Holders */
-void board_init_r(gd_t *id, ulong dest_addr)
-{
-       /* Function attribute is no-return */
-       /* This Function never executes */
-       while (1)
-               ;
-}
-
-void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) {}

diff --git a/board/samsung/smdk5250/spl_boot.c b/board/samsung/smdk5250/spl_boot.c
new file mode 100644 (file)
index 0000000..d8f3c1e
--- /dev/null
+++ b/board/samsung/smdk5250/spl_boot.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#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
+* Pointer to API (Data transfer from mmc to ram)
+*/
+void copy_uboot_to_ram(void)
+{
+       spi_copy_func_t spi_copy;
+       enum boot_mode bootmode;
+       u32 (*copy_bl2)(u32, u32, u32);
+
+       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)
+{
+       __attribute__((noreturn)) void (*uboot)(void);
+       copy_uboot_to_ram();
+
+       /* Jump to U-Boot image */
+       uboot = (void *)CONFIG_SYS_TEXT_BASE;
+       (*uboot)();
+       /* Never returns Here */
+}
+
+/* Place Holders */
+void board_init_r(gd_t *id, ulong dest_addr)
+{
+       /* Function attribute is no-return */
+       /* This Function never executes */
+       while (1)
+               ;
+}
+
+void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) {}

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