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