spl: mmc: support uboot image offset on main partition
On Armada 38x platforms the ROM code loads SPL from offset 0 of eMMC
hardware boot partitions. When there are no boot partitions (i.e. SD
card) the ROM skips the first sector that usually contains the (logical)
partition table. Since the generated .kwb image contains the main U-Boot
image in a fixed location (0x140 sectors by default), we end up with the
main U-Boot image in offset of 1 sector. The current workaround is to
manually set CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR to 0x141 to
compensate for that.
This patch uses the run-time detected boot partition to determine the
right offset of the main U-Boot partition. The generated .kwb image is
now compatible with both eMMC boot partition, and SD card main data
partition.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/common/spl/spl_mmc.c b/common/spl/spl_mmc.c
index 2ede096..3e6a17c 100644
--- a/common/spl/spl_mmc.c
+++ b/common/spl/spl_mmc.c
@@ -49,6 +49,16 @@
return blk_dread(mmc_get_blk_desc(mmc), sector, count, buf);
}
+static __maybe_unused unsigned long spl_mmc_raw_uboot_offset(int part)
+{
+#if IS_ENABLED(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR)
+ if (part == 0)
+ return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET;
+#endif
+
+ return 0;
+}
+
static __maybe_unused
int mmc_load_image_raw_sector(struct spl_image_info *spl_image,
struct mmc *mmc, unsigned long sector)
@@ -325,7 +335,7 @@
static struct mmc *mmc;
u32 boot_mode;
int err = 0;
- __maybe_unused int part;
+ __maybe_unused int part = 0;
/* Perform peripheral init only once */
if (!mmc) {
@@ -391,7 +401,8 @@
return err;
#endif
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
- err = mmc_load_image_raw_sector(spl_image, mmc, raw_sect);
+ err = mmc_load_image_raw_sector(spl_image, mmc,
+ raw_sect + spl_mmc_raw_uboot_offset(part));
if (!err)
return err;
#endif