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 <asm/u-boot.h>
  12 #include <mmc.h>
  13 #include <image.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 static int mmc_load_image_raw_sector(struct mmc *mmc, unsigned long sector)
  18 {
  19         unsigned long err;
  20         u32 image_size_sectors;
  21         struct image_header *header;
  22
  23         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  24                                                 sizeof(struct image_header));
  25
  26         /* read image header to find the image size & load address */
  27         err = mmc->block_dev.block_read(0, sector, 1, header);
  28         if (err == 0)
  29                 goto end;
  30
  31         if (image_get_magic(header) != IH_MAGIC)
  32                 return -1;
  33
  34         spl_parse_image_header(header);
  35
  36         /* convert size to sectors - round up */
  37         image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) /
  38                                 mmc->read_bl_len;
  39
  40         /* Read the header too to avoid extra memcpy */
  41         err = mmc->block_dev.block_read(0, sector, image_size_sectors,
  42                                         (void *)spl_image.load_addr);
  43
  44 end:
  45 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  46         if (err == 0)
  47                 printf("spl: mmc blk read err - %lu\n", err);
  48 #endif
  49
  50         return (err == 0);
  51 }
  52
  53 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
  54 static int mmc_load_image_raw_partition(struct mmc *mmc, int partition)
  55 {
  56         disk_partition_t info;
  57
  58         if (get_partition_info(&mmc->block_dev, partition, &info)) {
  59 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  60                 printf("spl: partition error\n");
  61 #endif
  62                 return -1;
  63         }
  64
  65         return mmc_load_image_raw_sector(mmc, info.start);
  66 }
  67 #endif
  68
  69 #ifdef CONFIG_SPL_OS_BOOT
  70 static int mmc_load_image_raw_os(struct mmc *mmc)
  71 {
  72         if (!mmc->block_dev.block_read(0,
  73                                        CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
  74                                        CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
  75                                        (void *)CONFIG_SYS_SPL_ARGS_ADDR)) {
  76 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  77                 printf("mmc args blk read error\n");
  78 #endif
  79                 return -1;
  80         }
  81
  82         return mmc_load_image_raw_sector(mmc,
  83                                                 CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
  84 }
  85 #endif
  86
  87 void spl_mmc_load_image(void)
  88 {
  89         struct mmc *mmc;
  90         int err;
  91         u32 boot_mode;
  92
  93         mmc_initialize(gd->bd);
  94         /* We register only one device. So, the dev id is always 0 */
  95         mmc = find_mmc_device(0);
  96         if (!mmc) {
  97 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  98                 puts("spl: mmc device not found!!\n");
  99 #endif
 100                 hang();
 101         }
 102
 103         err = mmc_init(mmc);
 104         if (err) {
 105 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 106                 printf("spl: mmc init failed: err - %d\n", err);
 107 #endif
 108                 hang();
 109         }
 110
 111         boot_mode = spl_boot_mode();
 112         if (boot_mode == MMCSD_MODE_RAW) {
 113                 debug("boot mode - RAW\n");
 114 #ifdef CONFIG_SPL_OS_BOOT
 115                 if (spl_start_uboot() || mmc_load_image_raw_os(mmc))
 116 #endif
 117 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
 118                 err = mmc_load_image_raw_partition(mmc,
 119                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 120 #else
 121                 err = mmc_load_image_raw_sector(mmc,
 122                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 123 #endif
 124 #if defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
 125         }
 126         if (err || boot_mode == MMCSD_MODE_FS) {
 127                 debug("boot mode - FS\n");
 128 #ifdef CONFIG_SPL_FAT_SUPPORT
 129 #ifdef CONFIG_SPL_OS_BOOT
 130                 if (spl_start_uboot() || spl_load_image_fat_os(&mmc->block_dev,
 131                                                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION))
 132 #endif
 133                 err = spl_load_image_fat(&mmc->block_dev,
 134                                         CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 135                                         CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 136                 if(err)
 137 #endif /* CONFIG_SPL_FAT_SUPPORT */
 138                 {
 139 #ifdef CONFIG_SPL_EXT_SUPPORT
 140 #ifdef CONFIG_SPL_OS_BOOT
 141                 if (spl_start_uboot() || spl_load_image_ext_os(&mmc->block_dev,
 142                                                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION))
 143 #endif
 144                 err = spl_load_image_ext(&mmc->block_dev,
 145                                         CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 146                                         CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 147 #endif /* CONFIG_SPL_EXT_SUPPORT */
 148                 }
 149 #endif /* defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT) */
 150 #ifdef CONFIG_SUPPORT_EMMC_BOOT
 151         } else if (boot_mode == MMCSD_MODE_EMMCBOOT) {
 152                 /*
 153                  * We need to check what the partition is configured to.
 154                  * 1 and 2 match up to boot0 / boot1 and 7 is user data
 155                  * which is the first physical partition (0).
 156                  */
 157                 int part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
 158
 159                 if (part == 7)
 160                         part = 0;
 161
 162                 if (mmc_switch_part(0, part)) {
 163 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 164                         puts("MMC partition switch failed\n");
 165 #endif
 166                         hang();
 167                 }
 168 #ifdef CONFIG_SPL_OS_BOOT
 169                 if (spl_start_uboot() || mmc_load_image_raw_os(mmc))
 170 #endif
 171                 err = mmc_load_image_raw_sector(mmc,
 172                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 173 #endif
 174         }
 175
 176         switch(boot_mode){
 177                 case MMCSD_MODE_RAW:
 178 #if defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
 179                 case MMCSD_MODE_FS:
 180 #endif
 181 #ifdef CONFIG_SUPPORT_EMMC_BOOT
 182                 case MMCSD_MODE_EMMCBOOT:
 183 #endif
 184                         /* Boot mode is ok. Nothing to do. */
 185                         break;
 186                 case MMCSD_MODE_UNDEFINED:
 187                 default:
 188 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 189                         puts("spl: wrong MMC boot mode\n");
 190 #endif
 191                         hang();
 192         }
 193
 194         if (err)
 195                 hang();
 196 }