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