+
+static int do_sdsetn(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ int dev;
+
+ dev = find_first_mmc_device(true);
+ if (dev < 0)
+ return CMD_RET_FAILURE;
+
+ env_set_ulong("sd_first_dev", dev);
+ return CMD_RET_SUCCESS;
+}
+
+U_BOOT_CMD(
+ sdsetn, 1, 1, do_sdsetn,
+ "Set the first SD dev number to \"sd_first_dev\" environment",
+ ""
+);