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 <version.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 err;
  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         err = mmc->block_dev.block_read(0, sector, 1, header);
  29         if (err == 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         err = 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 (err == 0)
  48                 printf("spl: mmc blk read err - %lu\n", err);
  49 #endif
  50
  51         return (err == 0);
  52 }
  53
  54 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
  55 static int mmc_load_image_raw_partition(struct mmc *mmc, int partition)
  56 {
  57         disk_partition_t info;
  58
  59         if (get_partition_info(&mmc->block_dev, partition, &info)) {
  60 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  61                 printf("spl: partition error\n");
  62 #endif
  63                 return -1;
  64         }
  65
  66         return mmc_load_image_raw_sector(mmc, info.start);
  67 }
  68 #endif
  69
  70 #ifdef CONFIG_SPL_OS_BOOT
  71 static int mmc_load_image_raw_os(struct mmc *mmc)
  72 {
  73         if (!mmc->block_dev.block_read(0,
  74                                        CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
  75                                        CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
  76                                        (void *)CONFIG_SYS_SPL_ARGS_ADDR)) {
  77 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  78                 printf("mmc args blk read error\n");
  79 #endif
  80                 return -1;
  81         }
  82
  83         return mmc_load_image_raw_sector(mmc,
  84                                                 CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
  85 }
  86 #endif
  87
  88 void spl_mmc_load_image(void)
  89 {
  90         struct mmc *mmc;
  91         int err;
  92         u32 boot_mode;
  93
  94         mmc_initialize(gd->bd);
  95         /* We register only one device. So, the dev id is always 0 */
  96         mmc = find_mmc_device(0);
  97         if (!mmc) {
  98 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  99                 puts("spl: mmc device not found!!\n");
 100 #endif
 101                 hang();
 102         }
 103
 104         err = mmc_init(mmc);
 105         if (err) {
 106 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 107                 printf("spl: mmc init failed: err - %d\n", err);
 108 #endif
 109                 hang();
 110         }
 111
 112         boot_mode = spl_boot_mode();
 113         if (boot_mode == MMCSD_MODE_RAW) {
 114                 debug("boot mode - RAW\n");
 115 #ifdef CONFIG_SPL_OS_BOOT
 116                 if (spl_start_uboot() || mmc_load_image_raw_os(mmc))
 117 #endif
 118 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
 119                 err = mmc_load_image_raw_partition(mmc,
 120                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 121 #else
 122                 err = mmc_load_image_raw_sector(mmc,
 123                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 124 #endif
 125 #if defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
 126         }
 127         if (err || boot_mode == MMCSD_MODE_FS) {
 128                 debug("boot mode - FS\n");
 129 #ifdef CONFIG_SPL_FAT_SUPPORT
 130 #ifdef CONFIG_SPL_OS_BOOT
 131                 if (spl_start_uboot() || spl_load_image_fat_os(&mmc->block_dev,
 132                                                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION))
 133 #endif
 134                 err = spl_load_image_fat(&mmc->block_dev,
 135                                         CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 136                                         CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 137                 if(err)
 138 #endif /* CONFIG_SPL_FAT_SUPPORT */
 139                 {
 140 #ifdef CONFIG_SPL_EXT_SUPPORT
 141 #ifdef CONFIG_SPL_OS_BOOT
 142                 if (spl_start_uboot() || spl_load_image_ext_os(&mmc->block_dev,
 143                                                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION))
 144 #endif
 145                 err = spl_load_image_ext(&mmc->block_dev,
 146                                         CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 147                                         CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 148 #endif /* CONFIG_SPL_EXT_SUPPORT */
 149                 }
 150 #endif /* defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT) */
 151 #ifdef CONFIG_SUPPORT_EMMC_BOOT
 152         } else if (boot_mode == MMCSD_MODE_EMMCBOOT) {
 153                 /*
 154                  * We need to check what the partition is configured to.
 155                  * 1 and 2 match up to boot0 / boot1 and 7 is user data
 156                  * which is the first physical partition (0).
 157                  */
 158                 int part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
 159
 160                 if (part == 7)
 161                         part = 0;
 162
 163                 if (mmc_switch_part(0, part)) {
 164 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 165                         puts("MMC partition switch failed\n");
 166 #endif
 167                         hang();
 168                 }
 169 #ifdef CONFIG_SPL_OS_BOOT
 170                 if (spl_start_uboot() || mmc_load_image_raw_os(mmc))
 171 #endif
 172                 err = mmc_load_image_raw_sector(mmc,
 173                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 174 #endif
 175         } else {
 176 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 177                 puts("spl: wrong MMC boot mode\n");
 178 #endif
 179                 hang();
 180         }
 181
 182         if (err)
 183                 hang();
 184 }