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         return mmc_load_image_raw_sector(mmc, info.start);
  77 }
  78 #endif
  79
  80 #ifdef CONFIG_SPL_OS_BOOT
  81 static int mmc_load_image_raw_os(struct mmc *mmc)
  82 {
  83         unsigned long count;
  84
  85         count = mmc->block_dev.block_read(0,
  86                 CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
  87                 CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
  88                 (void *) CONFIG_SYS_SPL_ARGS_ADDR);
  89         if (count == 0) {
  90 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  91                 puts("spl: mmc block read error\n");
  92 #endif
  93                 return -1;
  94         }
  95
  96         return mmc_load_image_raw_sector(mmc,
  97                 CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
  98 }
  99 #endif
 100
 101 void spl_mmc_load_image(void)
 102 {
 103         struct mmc *mmc;
 104         u32 boot_mode;
 105         int err = 0;
 106         __maybe_unused int part;
 107
 108 #ifdef CONFIG_DM_MMC
 109         struct udevice *dev;
 110
 111         mmc_initialize(NULL);
 112         err = uclass_get_device(UCLASS_MMC, 0, &dev);
 113         mmc = NULL;
 114         if (!err)
 115                 mmc = mmc_get_mmc_dev(dev);
 116 #else
 117         mmc_initialize(gd->bd);
 118
 119         /* We register only one device. So, the dev id is always 0 */
 120         mmc = find_mmc_device(0);
 121         if (!mmc) {
 122 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 123                 puts("spl: mmc device not found\n");
 124 #endif
 125                 hang();
 126         }
 127 #endif
 128
 129         if (!err)
 130                 err = mmc_init(mmc);
 131
 132         if (err) {
 133 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 134                 printf("spl: mmc init failed with error: %d\n", err);
 135 #endif
 136                 hang();
 137         }
 138
 139         boot_mode = spl_boot_mode();
 140         switch (boot_mode) {
 141         case MMCSD_MODE_RAW:
 142                 debug("spl: mmc boot mode: raw\n");
 143
 144 #ifdef CONFIG_SPL_OS_BOOT
 145                 if (!spl_start_uboot()) {
 146                         err = mmc_load_image_raw_os(mmc);
 147                         if (!err)
 148                                 return;
 149                 }
 150 #endif
 151 #if defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION)
 152                 err = mmc_load_image_raw_partition(mmc,
 153                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 154                 if (!err)
 155                         return;
 156 #elif defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR)
 157                 err = mmc_load_image_raw_sector(mmc,
 158                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 159                 if (!err)
 160                         return;
 161 #endif
 162         case MMCSD_MODE_FS:
 163                 debug("spl: mmc boot mode: fs\n");
 164
 165 #ifdef CONFIG_SYS_MMCSD_FS_BOOT_PARTITION
 166 #ifdef CONFIG_SPL_FAT_SUPPORT
 167 #ifdef CONFIG_SPL_OS_BOOT
 168                 if (!spl_start_uboot()) {
 169                         err = spl_load_image_fat_os(&mmc->block_dev,
 170                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
 171                         if (!err)
 172                                 return;
 173                 }
 174 #endif
 175 #ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
 176                 err = spl_load_image_fat(&mmc->block_dev,
 177                                          CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 178                                          CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 179                 if (!err)
 180                         return;
 181 #endif
 182 #endif
 183 #ifdef CONFIG_SPL_EXT_SUPPORT
 184 #ifdef CONFIG_SPL_OS_BOOT
 185                 if (!spl_start_uboot()) {
 186                         err = spl_load_image_ext_os(&mmc->block_dev,
 187                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
 188                         if (!err)
 189                                 return;
 190                 }
 191 #endif
 192 #ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
 193                 err = spl_load_image_ext(&mmc->block_dev,
 194                                          CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 195                                          CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 196                 if (!err)
 197                         return;
 198 #endif
 199 #endif
 200 #endif
 201 #ifdef CONFIG_SUPPORT_EMMC_BOOT
 202         case MMCSD_MODE_EMMCBOOT:
 203                 /*
 204                  * We need to check what the partition is configured to.
 205                  * 1 and 2 match up to boot0 / boot1 and 7 is user data
 206                  * which is the first physical partition (0).
 207                  */
 208                 part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
 209
 210                 if (part == 7)
 211                         part = 0;
 212
 213                 if (mmc_switch_part(0, part)) {
 214 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 215                         puts("spl: mmc partition switch failed\n");
 216 #endif
 217                         hang();
 218                 }
 219
 220 #ifdef CONFIG_SPL_OS_BOOT
 221                 if (!spl_start_uboot()) {
 222                         err = mmc_load_image_raw_os(mmc);
 223                         if (!err)
 224                                 return;
 225                 }
 226 #endif
 227 #if defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION)
 228                 err = mmc_load_image_raw_partition(mmc,
 229                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 230                 if (!err)
 231                         return;
 232 #elif defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR)
 233                 err = mmc_load_image_raw_sector(mmc,
 234                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 235                 if (!err)
 236                         return;
 237 #endif
 238 #endif
 239         case MMCSD_MODE_UNDEFINED:
 240         default:
 241 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 242                 if (err)
 243                         puts("spl: mmc: no boot mode left to try\n");
 244                 else
 245                         puts("spl: mmc: wrong boot mode\n");
 246 #endif
 247                 hang();
 248         }
 249 }