mmc.c
938 Bytes
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
/*
* Copyright (C) 2016 Freescale Semiconductor, Inc.
* Copyright 2018 NXP
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/sys_proto.h>
#include <linux/errno.h>
#include <asm/io.h>
#include <stdbool.h>
#include <mmc.h>
static int check_mmc_autodetect(void)
{
char *autodetect_str = env_get("mmcautodetect");
if ((autodetect_str != NULL) &&
(strcmp(autodetect_str, "yes") == 0)) {
return 1;
}
return 0;
}
/* This should be defined for each board */
__weak int mmc_map_to_kernel_blk(int dev_no)
{
return dev_no;
}
void board_late_mmc_env_init(void)
{
char cmd[32];
char mmcblk[32];
u32 dev_no = mmc_get_env_dev();
if (!check_mmc_autodetect())
return;
env_set_ulong("mmcdev", dev_no);
/* Set mmcblk env */
sprintf(mmcblk, "/dev/mmcblk%dp2 rootwait rw",
mmc_map_to_kernel_blk(dev_no));
env_set("mmcroot", mmcblk);
sprintf(cmd, "mmc dev %d", dev_no);
run_command(cmd, 0);
}