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https://github.com/AsahiLinux/u-boot
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On the UniElec U7623 board there is no external SD slot and the preloader doesn't fill in the magic field at 0x81dffff0 to indicate that it was booted from eMMC. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
42 lines
695 B
C
42 lines
695 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2018 MediaTek Inc.
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*/
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#include <common.h>
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#include <mmc.h>
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DECLARE_GLOBAL_DATA_PTR;
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int board_init(void)
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{
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/* address of boot parameters */
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gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
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return 0;
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}
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#ifdef CONFIG_MMC
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int mmc_get_boot_dev(void)
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{
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int g_mmc_devid = -1;
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char *uflag = (char *)0x81DFFFF0;
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if (!find_mmc_device(1))
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return 0;
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if (strncmp(uflag,"eMMC",4)==0) {
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g_mmc_devid = 0;
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printf("Boot From Emmc(id:%d)\n\n", g_mmc_devid);
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} else {
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g_mmc_devid = 1;
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printf("Boot From SD(id:%d)\n\n", g_mmc_devid);
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}
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return g_mmc_devid;
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}
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int mmc_get_env_dev(void)
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{
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return mmc_get_boot_dev();
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}
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#endif
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