common/spl/spl_mmc.c

   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 <linux/compiler.h>
  12 #include <asm/u-boot.h>
  13 #include <mmc.h>
  14 #include <image.h>
  15
  16 DECLARE_GLOBAL_DATA_PTR;
  17
  18 static int mmc_load_image_raw_sector(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 block read error\n");
  49 #endif
  50
  51         return (err == 0);
  52 }
  53
  54 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
  55 static int mmc_load_image_raw_partition(struct mmc *mmc, int partition)
  56 {
  57         disk_partition_t info;
  58
  59         if (get_partition_info(&mmc->block_dev, partition, &info)) {
  60 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  61                 printf("spl: partition error\n");
  62 #endif
  63                 return -1;
  64         }
  65
  66         return mmc_load_image_raw_sector(mmc, info.start);
  67 }
  68 #endif
  69
  70 #ifdef CONFIG_SPL_OS_BOOT
  71 static int mmc_load_image_raw_os(struct mmc *mmc)
  72 {
  73         unsigned long err;
  74
  75         err = mmc->block_dev.block_read(0,
  76                                         CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
  77                                         CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
  78                                         (void *)CONFIG_SYS_SPL_ARGS_ADDR);
  79         if (err == 0) {
  80 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  81                 printf("spl: mmc block read error\n");
  82 #endif
  83                 return -1;
  84         }
  85
  86         return mmc_load_image_raw_sector(mmc,
  87                 CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
  88 }
  89 #endif
  90
  91 void spl_mmc_load_image(void)
  92 {
  93         struct mmc *mmc;
  94         u32 boot_mode;
  95         int err;
  96         __maybe_unused int part;
  97
  98         mmc_initialize(gd->bd);
  99
 100         /* We register only one device. So, the dev id is always 0 */
 101         mmc = find_mmc_device(0);
 102         if (!mmc) {
 103 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 104                 puts("spl: mmc device not found\n");
 105 #endif
 106                 hang();
 107         }
 108
 109         err = mmc_init(mmc);
 110         if (err) {
 111 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 112                 printf("spl: mmc init failed with error: %d\n", err);
 113 #endif
 114                 hang();
 115         }
 116
 117         boot_mode = spl_boot_mode();
 118         switch (boot_mode) {
 119         case MMCSD_MODE_RAW:
 120                 debug("spl: mmc boot mode: raw\n");
 121
 122 #ifdef CONFIG_SPL_OS_BOOT
 123                 if (!spl_start_uboot()) {
 124                         err = mmc_load_image_raw_os(mmc);
 125                         if (!err)
 126                                 return;
 127                 }
 128 #endif
 129 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
 130                 err = mmc_load_image_raw_partition(mmc,
 131                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 132 #else
 133                 err = mmc_load_image_raw_sector(mmc,
 134                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 135 #endif
 136                 if (!err)
 137                         return;
 138 #if defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
 139         case MMCSD_MODE_FS:
 140                 debug("spl: mmc boot mode: fs\n");
 141
 142 #ifdef CONFIG_SPL_FAT_SUPPORT
 143 #ifdef CONFIG_SPL_OS_BOOT
 144                 if (!spl_start_uboot()) {
 145                         err = spl_load_image_fat_os(&mmc->block_dev,
 146                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
 147                         if (!err)
 148                                 return;
 149                 }
 150 #endif
 151                 err = spl_load_image_fat(&mmc->block_dev,
 152                                          CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 153                                          CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 154                 if (!err)
 155                         return;
 156 #endif
 157 #ifdef CONFIG_SPL_EXT_SUPPORT
 158 #ifdef CONFIG_SPL_OS_BOOT
 159                 if (!spl_start_uboot()) {
 160                         err = spl_load_image_ext_os(&mmc->block_dev,
 161                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
 162                         if (!err)
 163                                 return;
 164                 }
 165 #endif
 166                 err = spl_load_image_ext(&mmc->block_dev,
 167                                          CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 168                                          CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 169                 if (!err)
 170                         return;
 171 #endif
 172 #endif
 173 #ifdef CONFIG_SUPPORT_EMMC_BOOT
 174         case MMCSD_MODE_EMMCBOOT:
 175                 /*
 176                  * We need to check what the partition is configured to.
 177                  * 1 and 2 match up to boot0 / boot1 and 7 is user data
 178                  * which is the first physical partition (0).
 179                  */
 180                 part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
 181
 182                 if (part == 7)
 183                         part = 0;
 184
 185                 if (mmc_switch_part(0, part)) {
 186 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 187                         puts("spl: mmc partition switch failed\n");
 188 #endif
 189                         hang();
 190                 }
 191
 192 #ifdef CONFIG_SPL_OS_BOOT
 193                 if (!spl_start_uboot()) {
 194                         err = mmc_load_image_raw_os(mmc);
 195                         if (!err)
 196                                 return;
 197                 }
 198 #endif
 199 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
 200                 err = mmc_load_image_raw_partition(mmc,
 201                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 202 #else
 203                 err = mmc_load_image_raw_sector(mmc,
 204                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 205 #endif
 206                 if (!err)
 207                         return;
 208 #endif
 209         case MMCSD_MODE_UNDEFINED:
 210         default:
 211 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 212                 if (err)
 213                         puts("spl: mmc: no boot mode left to try\n");
 214                 else
 215                         puts("spl: mmc: wrong boot mode\n");
 216 #endif
 217                 hang();
 218         }
 219 }