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         if (err == 0)
  48                 printf("spl: mmc blk read err - %lu\n", err);
  49
  50         return (err == 0);
  51 }
  52
  53 #ifdef CONFIG_SPL_OS_BOOT
  54 static int mmc_load_image_raw_os(struct mmc *mmc)
  55 {
  56         if (!mmc->block_dev.block_read(0,
  57                                        CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
  58                                        CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
  59                                        (void *)CONFIG_SYS_SPL_ARGS_ADDR)) {
  60                 printf("mmc args blk read error\n");
  61                 return -1;
  62         }
  63
  64         return mmc_load_image_raw(mmc, CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
  65 }
  66 #endif
  67
  68 #ifdef CONFIG_SPL_FAT_SUPPORT
  69 static int mmc_load_image_fat(struct mmc *mmc, const char *filename)
  70 {
  71         int err;
  72         struct image_header *header;
  73
  74         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  75                                                 sizeof(struct image_header));
  76
  77         err = file_fat_read(filename, header, sizeof(struct image_header));
  78         if (err <= 0)
  79                 goto end;
  80
  81         spl_parse_image_header(header);
  82
  83         err = file_fat_read(filename, (u8 *)spl_image.load_addr, 0);
  84
  85 end:
  86         if (err <= 0)
  87                 printf("spl: error reading image %s, err - %d\n",
  88                        filename, err);
  89
  90         return (err <= 0);
  91 }
  92
  93 #ifdef CONFIG_SPL_OS_BOOT
  94 static int mmc_load_image_fat_os(struct mmc *mmc)
  95 {
  96         int err;
  97
  98         err = file_fat_read(CONFIG_SPL_FAT_LOAD_ARGS_NAME,
  99                             (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
 100         if (err <= 0) {
 101                 printf("spl: error reading image %s, err - %d\n",
 102                        CONFIG_SPL_FAT_LOAD_ARGS_NAME, err);
 103                 return -1;
 104         }
 105
 106         return mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_KERNEL_NAME);
 107 }
 108 #endif
 109
 110 #endif
 111
 112 void spl_mmc_load_image(void)
 113 {
 114         struct mmc *mmc;
 115         int err;
 116         u32 boot_mode;
 117
 118         mmc_initialize(gd->bd);
 119         /* We register only one device. So, the dev id is always 0 */
 120         mmc = find_mmc_device(0);
 121         if (!mmc) {
 122                 puts("spl: mmc device not found!!\n");
 123                 hang();
 124         }
 125
 126         err = mmc_init(mmc);
 127         if (err) {
 128                 printf("spl: mmc init failed: err - %d\n", err);
 129                 hang();
 130         }
 131
 132         boot_mode = spl_boot_mode();
 133         if (boot_mode == MMCSD_MODE_RAW) {
 134                 debug("boot mode - RAW\n");
 135 #ifdef CONFIG_SPL_OS_BOOT
 136                 if (spl_start_uboot() || mmc_load_image_raw_os(mmc))
 137 #endif
 138                 err = mmc_load_image_raw(mmc,
 139                                          CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 140 #ifdef CONFIG_SPL_FAT_SUPPORT
 141         } else if (boot_mode == MMCSD_MODE_FAT) {
 142                 debug("boot mode - FAT\n");
 143
 144                 err = fat_register_device(&mmc->block_dev,
 145                                           CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION);
 146                 if (err) {
 147                         printf("spl: fat register err - %d\n", err);
 148                         hang();
 149                 }
 150
 151 #ifdef CONFIG_SPL_OS_BOOT
 152                 if (spl_start_uboot() || mmc_load_image_fat_os(mmc))
 153 #endif
 154                 err = mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
 155 #endif
 156         } else {
 157                 puts("spl: wrong MMC boot mode\n");
 158                 hang();
 159         }
 160
 161         if (err)
 162                 hang();
 163 }