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https://github.com/brain-hackers/u-boot-brain
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e3cc511eef
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>
43 lines
695 B
C
43 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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