cmd: gpt: add subcommand repair

Adds a sub-command repair to the command gpt
that allow to repair a corrupted gpt table. If
the both gpt table (primary and backup) are
valid, then the command does nothing.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>

diff --git a/cmd/gpt.c b/cmd/gpt.c
index 1c0525f..007a68e 100644 (file)
--- a/cmd/gpt.c
+++ b/cmd/gpt.c
@@ -586,6 +586,15 @@ err:
        return errno;
 }
 
+static int gpt_repair(struct blk_desc *blk_dev_desc)
+{
+       int ret = 0;
+
+       ret = gpt_repair_headers(blk_dev_desc);
+
+       return ret;
+}
+
 static int gpt_default(struct blk_desc *blk_dev_desc, const char *str_part)
 {
        int ret;
@@ -997,7 +1006,10 @@ static int do_gpt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
                return CMD_RET_FAILURE;
        }
 
-       if ((strcmp(argv[1], "write") == 0) && (argc == 5)) {
+       if (strcmp(argv[1], "repair") == 0) {
+               printf("Repairing GPT: ");
+               ret = gpt_repair(blk_dev_desc);
+       } else if ((strcmp(argv[1], "write") == 0) && (argc == 5)) {
                printf("Writing GPT: ");
                ret = gpt_default(blk_dev_desc, argv[4]);
        } else if ((strcmp(argv[1], "verify") == 0)) {
@@ -1036,6 +1048,8 @@ U_BOOT_CMD(gpt, CONFIG_SYS_MAXARGS, 1, do_gpt,
        " Restore or verify GPT information on a device connected\n"
        " to interface\n"
        " Example usage:\n"
+       " gpt repair mmc 0\n"
+       "    - repair the GPT on the device\n"
        " gpt write mmc 0 $partitions\n"
        "    - write the GPT to device\n"
        " gpt verify mmc 0 $partitions\n"