1e5957e8dSMasahiro Yamada /*
2e5957e8dSMasahiro Yamada * Copyright (C) 2016 Socionext Inc.
3e5957e8dSMasahiro Yamada * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
4e5957e8dSMasahiro Yamada *
5e5957e8dSMasahiro Yamada * SPDX-License-Identifier: GPL-2.0+
6e5957e8dSMasahiro Yamada */
7e5957e8dSMasahiro Yamada
8e5957e8dSMasahiro Yamada #include <common.h>
9e5957e8dSMasahiro Yamada #include <mmc.h>
10e5957e8dSMasahiro Yamada #include <linux/errno.h>
11e5957e8dSMasahiro Yamada
find_first_mmc_device(void)12e5957e8dSMasahiro Yamada static int find_first_mmc_device(void)
13e5957e8dSMasahiro Yamada {
14e5957e8dSMasahiro Yamada struct mmc *mmc;
15e5957e8dSMasahiro Yamada int i;
16e5957e8dSMasahiro Yamada
17e5957e8dSMasahiro Yamada for (i = 0; (mmc = find_mmc_device(i)); i++) {
18e5957e8dSMasahiro Yamada if (!mmc_init(mmc) && IS_MMC(mmc))
19e5957e8dSMasahiro Yamada return i;
20e5957e8dSMasahiro Yamada }
21e5957e8dSMasahiro Yamada
22e5957e8dSMasahiro Yamada return -ENODEV;
23e5957e8dSMasahiro Yamada }
24e5957e8dSMasahiro Yamada
mmc_get_env_dev(void)25e5957e8dSMasahiro Yamada int mmc_get_env_dev(void)
26e5957e8dSMasahiro Yamada {
27e5957e8dSMasahiro Yamada return find_first_mmc_device();
28e5957e8dSMasahiro Yamada }
29e5957e8dSMasahiro Yamada
do_mmcsetn(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])30e5957e8dSMasahiro Yamada static int do_mmcsetn(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
31e5957e8dSMasahiro Yamada {
32e5957e8dSMasahiro Yamada int dev;
33e5957e8dSMasahiro Yamada
34e5957e8dSMasahiro Yamada dev = find_first_mmc_device();
35e5957e8dSMasahiro Yamada if (dev < 0)
36e5957e8dSMasahiro Yamada return CMD_RET_FAILURE;
37e5957e8dSMasahiro Yamada
38*018f5303SSimon Glass env_set_ulong("mmc_first_dev", dev);
39e5957e8dSMasahiro Yamada return CMD_RET_SUCCESS;
40e5957e8dSMasahiro Yamada }
41e5957e8dSMasahiro Yamada
42e5957e8dSMasahiro Yamada U_BOOT_CMD(
43e5957e8dSMasahiro Yamada mmcsetn, 1, 1, do_mmcsetn,
44e5957e8dSMasahiro Yamada "Set the first MMC (not SD) dev number to \"mmc_first_dev\" environment",
45e5957e8dSMasahiro Yamada ""
46e5957e8dSMasahiro Yamada );
47