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/spl_boot.c b/board/samsung/smdk5250/spl_boot.c
new file mode 100644
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) {}