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 count;
  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         count = mmc->block_dev.block_read(0, sector, 1, header);
  29         debug("read sector %lx, count=%lu\n", sector, count);
  30         if (count == 0)
  31                 goto end;
  32
  33         if (image_get_magic(header) != IH_MAGIC) {
  34                 puts("bad magic\n");
  35                 return -1;
  36         }
  37
  38         spl_parse_image_header(header);
  39
  40         /* convert size to sectors - round up */
  41         image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) /
  42                              mmc->read_bl_len;
  43
  44         /* Read the header too to avoid extra memcpy */
  45         count = mmc->block_dev.block_read(0, sector, image_size_sectors,
  46                                           (void *)spl_image.load_addr);
  47         debug("read %x sectors to %x\n", image_size_sectors,
  48               spl_image.load_addr);
  49
  50 end:
  51         if (count == 0) {
  52 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  53                 puts("spl: mmc block read error\n");
  54 #endif
  55                 return -1;
  56         }
  57
  58         return 0;
  59 }
  60
  61 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
  62 static int mmc_load_image_raw_partition(struct mmc *mmc, int partition)
  63 {
  64         disk_partition_t info;
  65         int err;
  66
  67         err = get_partition_info(&mmc->block_dev, partition, &info);
  68         if (err) {
  69 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  70                 puts("spl: partition error\n");
  71 #endif
  72                 return -1;
  73         }
  74
  75         return mmc_load_image_raw_sector(mmc, info.start);
  76 }
  77 #endif
  78
  79 #ifdef CONFIG_SPL_OS_BOOT
  80 static int mmc_load_image_raw_os(struct mmc *mmc)
  81 {
  82         unsigned long count;
  83
  84         count = mmc->block_dev.block_read(0,
  85                 CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
  86                 CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
  87                 (void *) CONFIG_SYS_SPL_ARGS_ADDR);
  88         if (count == 0) {
  89 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  90                 puts("spl: mmc block read error\n");
  91 #endif
  92                 return -1;
  93         }
  94
  95         return mmc_load_image_raw_sector(mmc,
  96                 CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
  97 }
  98 #endif
  99
 100 void spl_mmc_load_image(void)
 101 {
 102         struct mmc *mmc;
 103         u32 boot_mode;
 104         int err;
 105         __maybe_unused int part;
 106
 107         mmc_initialize(gd->bd);
 108
 109         /* We register only one device. So, the dev id is always 0 */
 110         mmc = find_mmc_device(0);
 111         if (!mmc) {
 112 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 113                 puts("spl: mmc device not found\n");
 114 #endif
 115                 hang();
 116         }
 117
 118         err = mmc_init(mmc);
 119         if (err) {
 120 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 121                 printf("spl: mmc init failed with error: %d\n", err);
 122 #endif
 123                 hang();
 124         }
 125
 126         boot_mode = spl_boot_mode();
 127         switch (boot_mode) {
 128         case MMCSD_MODE_RAW:
 129                 debug("spl: mmc boot mode: raw\n");
 130
 131 #ifdef CONFIG_SPL_OS_BOOT
 132                 if (!spl_start_uboot()) {
 133                         err = mmc_load_image_raw_os(mmc);
 134                         if (!err)
 135                                 return;
 136                 }
 137 #endif
 138 #if defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION)
 139                 err = mmc_load_image_raw_partition(mmc,
 140                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 141                 if (!err)
 142                         return;
 143 #elif defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR)
 144                 err = mmc_load_image_raw_sector(mmc,
 145                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 146                 if (!err)
 147                         return;
 148 #endif
 149         case MMCSD_MODE_FS:
 150                 debug("spl: mmc boot mode: fs\n");
 151
 152 #ifdef CONFIG_SYS_MMCSD_FS_BOOT_PARTITION
 153 #ifdef CONFIG_SPL_FAT_SUPPORT
 154 #ifdef CONFIG_SPL_OS_BOOT
 155                 if (!spl_start_uboot()) {
 156                         err = spl_load_image_fat_os(&mmc->block_dev,
 157                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
 158                         if (!err)
 159                                 return;
 160                 }
 161 #endif
 162 #ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
 163                 err = spl_load_image_fat(&mmc->block_dev,
 164                                          CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 165                                          CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 166                 if (!err)
 167                         return;
 168 #endif
 169 #endif
 170 #ifdef CONFIG_SPL_EXT_SUPPORT
 171 #ifdef CONFIG_SPL_OS_BOOT
 172                 if (!spl_start_uboot()) {
 173                         err = spl_load_image_ext_os(&mmc->block_dev,
 174                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
 175                         if (!err)
 176                                 return;
 177                 }
 178 #endif
 179 #ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
 180                 err = spl_load_image_ext(&mmc->block_dev,
 181                                          CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 182                                          CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 183                 if (!err)
 184                         return;
 185 #endif
 186 #endif
 187 #endif
 188 #ifdef CONFIG_SUPPORT_EMMC_BOOT
 189         case MMCSD_MODE_EMMCBOOT:
 190                 /*
 191                  * We need to check what the partition is configured to.
 192                  * 1 and 2 match up to boot0 / boot1 and 7 is user data
 193                  * which is the first physical partition (0).
 194                  */
 195                 part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
 196
 197                 if (part == 7)
 198                         part = 0;
 199
 200                 if (mmc_switch_part(0, part)) {
 201 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 202                         puts("spl: mmc partition switch failed\n");
 203 #endif
 204                         hang();
 205                 }
 206
 207 #ifdef CONFIG_SPL_OS_BOOT
 208                 if (!spl_start_uboot()) {
 209                         err = mmc_load_image_raw_os(mmc);
 210                         if (!err)
 211                                 return;
 212                 }
 213 #endif
 214 #if defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION)
 215                 err = mmc_load_image_raw_partition(mmc,
 216                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 217                 if (!err)
 218                         return;
 219 #elif defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR)
 220                 err = mmc_load_image_raw_sector(mmc,
 221                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 222                 if (!err)
 223                         return;
 224 #endif
 225 #endif
 226         case MMCSD_MODE_UNDEFINED:
 227         default:
 228 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 229                 if (err)
 230                         puts("spl: mmc: no boot mode left to try\n");
 231                 else
 232                         puts("spl: mmc: wrong boot mode\n");
 233 #endif
 234                 hang();
 235         }
 236 }