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