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