| /* |
| * Copyright (C) 2016 Socionext Inc. |
| * Author: Masahiro Yamada <yamada.masahiro@socionext.com> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <common.h> |
| #include <mmc.h> |
| #include <linux/errno.h> |
| |
| static int find_first_mmc_device(void) |
| { |
| struct mmc *mmc; |
| int i; |
| |
| for (i = 0; (mmc = find_mmc_device(i)); i++) { |
| if (!mmc_init(mmc) && IS_MMC(mmc)) |
| return i; |
| } |
| |
| return -ENODEV; |
| } |
| |
| int mmc_get_env_dev(void) |
| { |
| return find_first_mmc_device(); |
| } |
| |
| static int do_mmcsetn(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| { |
| int dev; |
| |
| dev = find_first_mmc_device(); |
| if (dev < 0) |
| return CMD_RET_FAILURE; |
| |
| setenv_ulong("mmc_first_dev", dev); |
| return CMD_RET_SUCCESS; |
| } |
| |
| U_BOOT_CMD( |
| mmcsetn, 1, 1, do_mmcsetn, |
| "Set the first MMC (not SD) dev number to \"mmc_first_dev\" environment", |
| "" |
| ); |