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