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 <fat.h>
  14 #include <version.h>
  15 #include <image.h>
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18
  19 static int mmc_load_image_raw(struct mmc *mmc, unsigned long sector)
  20 {
  21         unsigned long err;
  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         err = mmc->block_dev.block_read(0, sector, 1, header);
  30         if (err == 0)
  31                 goto end;
  32
  33         if (image_get_magic(header) != IH_MAGIC)
  34                 return -1;
  35
  36         spl_parse_image_header(header);
  37
  38         /* convert size to sectors - round up */
  39         image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) /
  40                                 mmc->read_bl_len;
  41
  42         /* Read the header too to avoid extra memcpy */
  43         err = mmc->block_dev.block_read(0, sector, image_size_sectors,
  44                                         (void *)spl_image.load_addr);
  45
  46 end:
  47 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  48         if (err == 0)
  49                 printf("spl: mmc blk read err - %lu\n", err);
  50 #endif
  51
  52         return (err == 0);
  53 }
  54
  55 #ifdef CONFIG_SPL_OS_BOOT
  56 static int mmc_load_image_raw_os(struct mmc *mmc)
  57 {
  58         if (!mmc->block_dev.block_read(0,
  59                                        CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
  60                                        CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
  61                                        (void *)CONFIG_SYS_SPL_ARGS_ADDR)) {
  62 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  63                 printf("mmc args blk read error\n");
  64 #endif
  65                 return -1;
  66         }
  67
  68         return mmc_load_image_raw(mmc, CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
  69 }
  70 #endif
  71
  72 #ifdef CONFIG_SPL_FAT_SUPPORT
  73 static int mmc_load_image_fat(struct mmc *mmc, const char *filename)
  74 {
  75         int err;
  76         struct image_header *header;
  77
  78         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  79                                                 sizeof(struct image_header));
  80
  81         err = file_fat_read(filename, header, sizeof(struct image_header));
  82         if (err <= 0)
  83                 goto end;
  84
  85         spl_parse_image_header(header);
  86
  87         err = file_fat_read(filename, (u8 *)spl_image.load_addr, 0);
  88
  89 end:
  90 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  91         if (err <= 0)
  92                 printf("spl: error reading image %s, err - %d\n",
  93                        filename, err);
  94 #endif
  95
  96         return (err <= 0);
  97 }
  98
  99 #ifdef CONFIG_SPL_OS_BOOT
 100 static int mmc_load_image_fat_os(struct mmc *mmc)
 101 {
 102         int err;
 103
 104         err = file_fat_read(CONFIG_SPL_FAT_LOAD_ARGS_NAME,
 105                             (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
 106         if (err <= 0) {
 107 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 108                 printf("spl: error reading image %s, err - %d\n",
 109                        CONFIG_SPL_FAT_LOAD_ARGS_NAME, err);
 110 #endif
 111                 return -1;
 112         }
 113
 114         return mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_KERNEL_NAME);
 115 }
 116 #endif
 117
 118 #endif
 119
 120 void spl_mmc_load_image(void)
 121 {
 122         struct mmc *mmc;
 123         int err;
 124         u32 boot_mode;
 125
 126         mmc_initialize(gd->bd);
 127         /* We register only one device. So, the dev id is always 0 */
 128         mmc = find_mmc_device(0);
 129         if (!mmc) {
 130 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 131                 puts("spl: mmc device not found!!\n");
 132 #endif
 133                 hang();
 134         }
 135
 136         err = mmc_init(mmc);
 137         if (err) {
 138 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 139                 printf("spl: mmc init failed: err - %d\n", err);
 140 #endif
 141                 hang();
 142         }
 143
 144         boot_mode = spl_boot_mode();
 145         if (boot_mode == MMCSD_MODE_RAW) {
 146                 debug("boot mode - RAW\n");
 147 #ifdef CONFIG_SPL_OS_BOOT
 148                 if (spl_start_uboot() || mmc_load_image_raw_os(mmc))
 149 #endif
 150                 err = mmc_load_image_raw(mmc,
 151                                          CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 152 #ifdef CONFIG_SPL_FAT_SUPPORT
 153         } else if (boot_mode == MMCSD_MODE_FAT) {
 154                 debug("boot mode - FAT\n");
 155
 156                 err = fat_register_device(&mmc->block_dev,
 157                                           CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION);
 158                 if (err) {
 159 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 160                         printf("spl: fat register err - %d\n", err);
 161 #endif
 162                         hang();
 163                 }
 164
 165 #ifdef CONFIG_SPL_OS_BOOT
 166                 if (spl_start_uboot() || mmc_load_image_fat_os(mmc))
 167 #endif
 168                 err = mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
 169 #endif
 170         } else {
 171 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 172                 puts("spl: wrong MMC boot mode\n");
 173 #endif
 174                 hang();
 175         }
 176
 177         if (err)
 178                 hang();
 179 }