[U-Boot] [PATCH 21/22] omap: spl: add FAT support over MMC

[Aneesh V]

Signed-off-by: Aneesh V <ane...@ti.com>
---
 include/configs/omap4_sdp4430.h |    1 +
 spl/board/ti/sdp4430/Makefile   |    8 ++++++++
 spl/board/ti/spl-omap.c         |   22 ++++++++++++++++++++++
 3 files changed, 31 insertions(+), 0 deletions(-)

diff --git a/include/configs/omap4_sdp4430.h b/include/configs/omap4_sdp4430.h
index 0ed474d..dcc9e39 100644
--- a/include/configs/omap4_sdp4430.h
+++ b/include/configs/omap4_sdp4430.h
@@ -259,6 +259,7 @@
 
 #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR        0x300 /* address 
0x60000 */
 #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS     0x200 /* 256 KB */
+#define CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION   1
 
 #define CONFIG_SYS_SPL_BSS_START_ADDR          0x80000000
 #define CONFIG_SYS_SPL_BSS_MAX_SIZE            0x80000         /* 512 KB */
diff --git a/spl/board/ti/sdp4430/Makefile b/spl/board/ti/sdp4430/Makefile
index 18c5b8e..8310db9 100644
--- a/spl/board/ti/sdp4430/Makefile
+++ b/spl/board/ti/sdp4430/Makefile
@@ -103,6 +103,14 @@ $(obj)part_dos.h:
        @ln -s $(TOPDIR)/disk/part_dos.h $@
 
 COBJS  += omap_hsmmc.o omap24xx_i2c.o mmc.o time.o part.o part_dos.o
+
+# fat
+$(obj)fat.c:
+       @rm -f $@
+       @ln -s $(TOPDIR)/fs/fat/fat.c $@
+
+COBJS  +=  fat.o
+
 # armv7
 $(obj)start.S:
        @rm -f $@
diff --git a/spl/board/ti/spl-omap.c b/spl/board/ti/spl-omap.c
index b64eac9..3612434 100644
--- a/spl/board/ti/spl-omap.c
+++ b/spl/board/ti/spl-omap.c
@@ -29,6 +29,7 @@
 #include <asm/u-boot.h>
 #include <asm/arch/sys_proto.h>
 #include <mmc.h>
+#include <fat.h>
 #include <timestamp_autogenerated.h>
 #include <asm/omap_common.h>
 #include <asm/arch/mmc_host_def.h>
@@ -101,6 +102,25 @@ end:
        }
 }
 
+static void mmc_load_uboot_fat(struct mmc *mmc)
+{
+       s32 err;
+
+       err = fat_register_device(&mmc->block_dev,
+                               CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION);
+       if (err) {
+               printf("spl: fat register err - %d\n", err);
+               hang();
+       }
+
+       err = file_fat_read("u-boot.bin", (u8 *)CONFIG_SYS_TEXT_BASE, 0);
+
+       if (err <= 0) {
+               printf("spl: error reading u-boot.bin - %d\n", err);
+               hang();
+       }
+}
+
 static void mmc_load_uboot(u32 mmc_dev)
 {
        struct mmc *mmc;
@@ -124,6 +144,8 @@ static void mmc_load_uboot(u32 mmc_dev)
        boot_mode = omap_boot_mode();
        if (boot_mode == MMCSD_MODE_RAW)
                mmc_load_uboot_raw(mmc, mmc_dev);
+       else if (boot_mode == MMCSD_MODE_FAT)
+               mmc_load_uboot_fat(mmc);
        else {
                puts("spl: wrong MMC boot mode\n");
                hang();
-- 
1.7.0.4

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