xref: /openbmc/u-boot/common/spl/spl_mmc.c (revision e7e90901)
1 /*
2  * (C) Copyright 2010
3  * Texas Instruments, <www.ti.com>
4  *
5  * Aneesh V <aneesh@ti.com>
6  *
7  * SPDX-License-Identifier:	GPL-2.0+
8  */
9 #include <common.h>
10 #include <spl.h>
11 #include <asm/u-boot.h>
12 #include <mmc.h>
13 #include <version.h>
14 #include <image.h>
15 
16 DECLARE_GLOBAL_DATA_PTR;
17 
18 static int mmc_load_image_raw(struct mmc *mmc, unsigned long sector)
19 {
20 	unsigned long err;
21 	u32 image_size_sectors;
22 	struct image_header *header;
23 
24 	header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
25 						sizeof(struct image_header));
26 
27 	/* read image header to find the image size & load address */
28 	err = mmc->block_dev.block_read(0, sector, 1, header);
29 	if (err == 0)
30 		goto end;
31 
32 	if (image_get_magic(header) != IH_MAGIC)
33 		return -1;
34 
35 	spl_parse_image_header(header);
36 
37 	/* convert size to sectors - round up */
38 	image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) /
39 				mmc->read_bl_len;
40 
41 	/* Read the header too to avoid extra memcpy */
42 	err = mmc->block_dev.block_read(0, sector, image_size_sectors,
43 					(void *)spl_image.load_addr);
44 
45 end:
46 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
47 	if (err == 0)
48 		printf("spl: mmc blk read err - %lu\n", err);
49 #endif
50 
51 	return (err == 0);
52 }
53 
54 #ifdef CONFIG_SPL_OS_BOOT
55 static int mmc_load_image_raw_os(struct mmc *mmc)
56 {
57 	if (!mmc->block_dev.block_read(0,
58 				       CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
59 				       CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
60 				       (void *)CONFIG_SYS_SPL_ARGS_ADDR)) {
61 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
62 		printf("mmc args blk read error\n");
63 #endif
64 		return -1;
65 	}
66 
67 	return mmc_load_image_raw(mmc, CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
68 }
69 #endif
70 
71 void spl_mmc_load_image(void)
72 {
73 	struct mmc *mmc;
74 	int err;
75 	u32 boot_mode;
76 
77 	mmc_initialize(gd->bd);
78 	/* We register only one device. So, the dev id is always 0 */
79 	mmc = find_mmc_device(0);
80 	if (!mmc) {
81 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
82 		puts("spl: mmc device not found!!\n");
83 #endif
84 		hang();
85 	}
86 
87 	err = mmc_init(mmc);
88 	if (err) {
89 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
90 		printf("spl: mmc init failed: err - %d\n", err);
91 #endif
92 		hang();
93 	}
94 
95 	boot_mode = spl_boot_mode();
96 	if (boot_mode == MMCSD_MODE_RAW) {
97 		debug("boot mode - RAW\n");
98 #ifdef CONFIG_SPL_OS_BOOT
99 		if (spl_start_uboot() || mmc_load_image_raw_os(mmc))
100 #endif
101 		err = mmc_load_image_raw(mmc,
102 			CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
103 #ifdef CONFIG_SPL_FAT_SUPPORT
104 	} else if (boot_mode == MMCSD_MODE_FAT) {
105 		debug("boot mode - FAT\n");
106 #ifdef CONFIG_SPL_OS_BOOT
107 		if (spl_start_uboot() || spl_load_image_fat_os(&mmc->block_dev,
108 								CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION))
109 #endif
110 		err = spl_load_image_fat(&mmc->block_dev,
111 					CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION,
112 					CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
113 #endif
114 #ifdef CONFIG_SUPPORT_EMMC_BOOT
115 	} else if (boot_mode == MMCSD_MODE_EMMCBOOT) {
116 		/*
117 		 * We need to check what the partition is configured to.
118 		 * 1 and 2 match up to boot0 / boot1 and 7 is user data
119 		 * which is the first physical partition (0).
120 		 */
121 		int part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
122 
123 		if (part == 7)
124 			part = 0;
125 
126 		if (mmc_switch_part(0, part)) {
127 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
128 			puts("MMC partition switch failed\n");
129 #endif
130 			hang();
131 		}
132 #ifdef CONFIG_SPL_OS_BOOT
133 		if (spl_start_uboot() || mmc_load_image_raw_os(mmc))
134 #endif
135 		err = mmc_load_image_raw(mmc,
136 			CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
137 #endif
138 	} else {
139 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
140 		puts("spl: wrong MMC boot mode\n");
141 #endif
142 		hang();
143 	}
144 
145 	if (err)
146 		hang();
147 }
148