SPL: add support to boot from a partition type
the socfpga bootrom supports mmc booting from either a raw image
starting at 0x0, or from a partition of type 0xa2. This patch
adds support for locating the boot image in the first type 0xa2
partition found.
Assigned a partition number of -1 will cause a search for a
partition of type CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE
and use it to find the u-boot image
Signed-off-by: Dalon Westergreen <dwesterg@gmail.com>
diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index cf714c2..baff7b6 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -96,6 +96,22 @@
Address on the MMC to load U-Boot from, when the MMC is being used
in raw mode. Units: MMC sectors (1 sector = 512 bytes).
+config SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
+ bool "MMC raw mode: by partition type"
+ depends on SPL && DOS_PARTITION && \
+ SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
+ help
+ Use partition type for specifying U-Boot partition on MMC/SD in
+ raw mode. U-Boot will be loaded from the first partition of this
+ type to be found.
+
+config SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE
+ hex "Partition Type on the MMC to load U-Boot from"
+ depends on SPL && SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
+ help
+ Partition Type on the MMC to load U-Boot from, when the MMC is being
+ used in raw mode.
+
config TPL
bool
depends on SPL && SUPPORT_TPL
diff --git a/common/spl/spl_mmc.c b/common/spl/spl_mmc.c
index 0cd355c..fb51fd5 100644
--- a/common/spl/spl_mmc.c
+++ b/common/spl/spl_mmc.c
@@ -157,6 +157,21 @@
disk_partition_t info;
int err;
+#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
+ int type_part;
+ /* Only support MBR so DOS_ENTRY_NUMBERS */
+ for (type_part = 1; type_part <= DOS_ENTRY_NUMBERS; type_part++) {
+ err = part_get_info(mmc_get_blk_desc(mmc), type_part, &info);
+ if (err)
+ continue;
+ if (info.sys_ind ==
+ CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE) {
+ partition = type_part;
+ break;
+ }
+ }
+#endif
+
err = part_get_info(mmc_get_blk_desc(mmc), partition, &info);
if (err) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT