mmc: init mmc block devices on probe

[oweals/u-boot.git] / disk / part_efi.c

diff --git a/disk/part_efi.c b/disk/part_efi.c
index b5928e5abec2018f92c852a26770084aba82d144..893cbbdbdaeb5cdbac23b1e24ef0bec7819a33bb 100644 (file)
--- a/disk/part_efi.c
+++ b/disk/part_efi.c
@@ -324,6 +324,13 @@ static int set_protective_mbr(struct blk_desc *dev_desc)
                printf("%s: calloc failed!\n", __func__);
                return -1;
        }
+
+       /* Read MBR to backup boot code if it exists */
+       if (blk_dread(dev_desc, 0, 1, p_mbr) != 1) {
+               error("** Can't read from device %d **\n", dev_desc->devnum);
+               return -1;
+       }
+
        /* Append signature */
        p_mbr->signature = MSDOS_MBR_SIGNATURE;
        p_mbr->partition_record[0].sys_ind = EFI_PMBR_OSTYPE_EFI_GPT;