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 <dm.h>
  11 #include <spl.h>
  12 #include <linux/compiler.h>
  13 #include <asm/u-boot.h>
  14 #include <mmc.h>
  15 #include <image.h>
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18
  19 static int mmc_load_image_raw_sector(struct mmc *mmc, unsigned long sector)
  20 {
  21         unsigned long count;
  22         u32 image_size_sectors;
  23         struct image_header *header;
  24
  25         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  26                                          sizeof(struct image_header));
  27
  28         /* read image header to find the image size & load address */
  29         count = mmc->block_dev.block_read(0, sector, 1, header);
  30         debug("read sector %lx, count=%lu\n", sector, count);
  31         if (count == 0)
  32                 goto end;
  33
  34         if (image_get_magic(header) != IH_MAGIC) {
  35                 puts("bad magic\n");
  36                 return -1;
  37         }
  38
  39         spl_parse_image_header(header);
  40
  41         /* convert size to sectors - round up */
  42         image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) /
  43                              mmc->read_bl_len;
  44
  45         /* Read the header too to avoid extra memcpy */
  46         count = mmc->block_dev.block_read(0, sector, image_size_sectors,
  47                                           (void *)spl_image.load_addr);
  48         debug("read %x sectors to %x\n", image_size_sectors,
  49               spl_image.load_addr);
  50
  51 end:
  52         if (count == 0) {
  53 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  54                 puts("spl: mmc block read error\n");
  55 #endif
  56                 return -1;
  57         }
  58
  59         return 0;
  60 }
  61
  62 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
  63 static int mmc_load_image_raw_partition(struct mmc *mmc, int partition)
  64 {
  65         disk_partition_t info;
  66         int err;
  67
  68         err = get_partition_info(&mmc->block_dev, partition, &info);
  69         if (err) {
  70 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  71                 puts("spl: partition error\n");
  72 #endif
  73                 return -1;
  74         }
  75
  76 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR
  77         return mmc_load_image_raw_sector(mmc, info.start +
  78                                          CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
  79 #else
  80         return mmc_load_image_raw_sector(mmc, info.start);
  81 #endif
  82 }
  83 #endif
  84
  85 #ifdef CONFIG_SPL_OS_BOOT
  86 static int mmc_load_image_raw_os(struct mmc *mmc)
  87 {
  88         unsigned long count;
  89
  90         count = mmc->block_dev.block_read(0,
  91                 CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
  92                 CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
  93                 (void *) CONFIG_SYS_SPL_ARGS_ADDR);
  94         if (count == 0) {
  95 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  96                 puts("spl: mmc block read error\n");
  97 #endif
  98                 return -1;
  99         }
 100
 101         return mmc_load_image_raw_sector(mmc,
 102                 CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
 103 }
 104 #endif
 105
 106 void spl_mmc_load_image(void)
 107 {
 108         struct mmc *mmc;
 109         u32 boot_mode;
 110         int err = 0;
 111         __maybe_unused int part;
 112
 113 #ifdef CONFIG_DM_MMC
 114         struct udevice *dev;
 115
 116         mmc_initialize(NULL);
 117         err = uclass_get_device(UCLASS_MMC, 0, &dev);
 118         mmc = NULL;
 119         if (!err)
 120                 mmc = mmc_get_mmc_dev(dev);
 121 #else
 122         mmc_initialize(gd->bd);
 123
 124         /* We register only one device. So, the dev id is always 0 */
 125         mmc = find_mmc_device(0);
 126         if (!mmc) {
 127 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 128                 puts("spl: mmc device not found\n");
 129 #endif
 130                 hang();
 131         }
 132 #endif
 133
 134         if (!err)
 135                 err = mmc_init(mmc);
 136
 137         if (err) {
 138 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 139                 printf("spl: mmc init failed with error: %d\n", err);
 140 #endif
 141                 hang();
 142         }
 143
 144         boot_mode = spl_boot_mode();
 145         switch (boot_mode) {
 146         case MMCSD_MODE_RAW:
 147                 debug("spl: mmc boot mode: raw\n");
 148
 149 #ifdef CONFIG_SPL_OS_BOOT
 150                 if (!spl_start_uboot()) {
 151                         err = mmc_load_image_raw_os(mmc);
 152                         if (!err)
 153                                 return;
 154                 }
 155 #endif
 156 #if defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION)
 157                 err = mmc_load_image_raw_partition(mmc,
 158                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 159                 if (!err)
 160                         return;
 161 #elif defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR)
 162                 err = mmc_load_image_raw_sector(mmc,
 163                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 164                 if (!err)
 165                         return;
 166 #endif
 167         case MMCSD_MODE_FS:
 168                 debug("spl: mmc boot mode: fs\n");
 169
 170 #ifdef CONFIG_SYS_MMCSD_FS_BOOT_PARTITION
 171 #ifdef CONFIG_SPL_FAT_SUPPORT
 172 #ifdef CONFIG_SPL_OS_BOOT
 173                 if (!spl_start_uboot()) {
 174                         err = spl_load_image_fat_os(&mmc->block_dev,
 175                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
 176                         if (!err)
 177                                 return;
 178                 }
 179 #endif
 180 #ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
 181                 err = spl_load_image_fat(&mmc->block_dev,
 182                                          CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 183                                          CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 184                 if (!err)
 185                         return;
 186 #endif
 187 #endif
 188 #ifdef CONFIG_SPL_EXT_SUPPORT
 189 #ifdef CONFIG_SPL_OS_BOOT
 190                 if (!spl_start_uboot()) {
 191                         err = spl_load_image_ext_os(&mmc->block_dev,
 192                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
 193                         if (!err)
 194                                 return;
 195                 }
 196 #endif
 197 #ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
 198                 err = spl_load_image_ext(&mmc->block_dev,
 199                                          CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 200                                          CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 201                 if (!err)
 202                         return;
 203 #endif
 204 #endif
 205 #endif
 206 #ifdef CONFIG_SUPPORT_EMMC_BOOT
 207         case MMCSD_MODE_EMMCBOOT:
 208                 /*
 209                  * We need to check what the partition is configured to.
 210                  * 1 and 2 match up to boot0 / boot1 and 7 is user data
 211                  * which is the first physical partition (0).
 212                  */
 213                 part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
 214
 215                 if (part == 7)
 216                         part = 0;
 217
 218                 if (mmc_switch_part(0, part)) {
 219 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 220                         puts("spl: mmc partition switch failed\n");
 221 #endif
 222                         hang();
 223                 }
 224
 225 #ifdef CONFIG_SPL_OS_BOOT
 226                 if (!spl_start_uboot()) {
 227                         err = mmc_load_image_raw_os(mmc);
 228                         if (!err)
 229                                 return;
 230                 }
 231 #endif
 232 #if defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION)
 233                 err = mmc_load_image_raw_partition(mmc,
 234                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 235                 if (!err)
 236                         return;
 237 #elif defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR)
 238                 err = mmc_load_image_raw_sector(mmc,
 239                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 240                 if (!err)
 241                         return;
 242 #endif
 243 #endif
 244         case MMCSD_MODE_UNDEFINED:
 245         default:
 246 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 247                 if (err)
 248                         puts("spl: mmc: no boot mode left to try\n");
 249                 else
 250                         puts("spl: mmc: wrong boot mode\n");
 251 #endif
 252                 hang();
 253         }
 254 }