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 #include <image.h>
  17
  18 DECLARE_GLOBAL_DATA_PTR;
  19
  20 static int mmc_load_image_raw(struct mmc *mmc, unsigned long sector)
  21 {
  22         unsigned long err;
  23         u32 image_size_sectors;
  24         struct image_header *header;
  25
  26         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  27                                                 sizeof(struct image_header));
  28
  29         /* read image header to find the image size & load address */
  30         err = mmc->block_dev.block_read(0, sector, 1, header);
  31         if (err == 0)
  32                 goto end;
  33
  34         if (image_get_magic(header) != IH_MAGIC)
  35                 return -1;
  36
  37         spl_parse_image_header(header);
  38
  39         /* convert size to sectors - round up */
  40         image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) /
  41                                 mmc->read_bl_len;
  42
  43         /* Read the header too to avoid extra memcpy */
  44         err = mmc->block_dev.block_read(0, sector, image_size_sectors,
  45                                         (void *)spl_image.load_addr);
  46
  47 end:
  48         if (err == 0)
  49                 printf("spl: mmc blk read err - %lu\n", err);
  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                 printf("mmc args blk read error\n");
  62                 return -1;
  63         }
  64
  65         return mmc_load_image_raw(mmc, CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
  66 }
  67 #endif
  68
  69 #ifdef CONFIG_SPL_FAT_SUPPORT
  70 static int mmc_load_image_fat(struct mmc *mmc, const char *filename)
  71 {
  72         int err;
  73         struct image_header *header;
  74
  75         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  76                                                 sizeof(struct image_header));
  77
  78         err = file_fat_read(filename, header, sizeof(struct image_header));
  79         if (err <= 0)
  80                 goto end;
  81
  82         spl_parse_image_header(header);
  83
  84         err = file_fat_read(filename, (u8 *)spl_image.load_addr, 0);
  85
  86 end:
  87         if (err <= 0)
  88                 printf("spl: error reading image %s, err - %d\n",
  89                        filename, err);
  90
  91         return (err <= 0);
  92 }
  93
  94 #ifdef CONFIG_SPL_OS_BOOT
  95 static int mmc_load_image_fat_os(struct mmc *mmc)
  96 {
  97         int err;
  98
  99         err = file_fat_read(CONFIG_SPL_FAT_LOAD_ARGS_NAME,
 100                             (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
 101         if (err <= 0) {
 102                 printf("spl: error reading image %s, err - %d\n",
 103                        CONFIG_SPL_FAT_LOAD_ARGS_NAME, err);
 104                 return -1;
 105         }
 106
 107         return mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_KERNEL_NAME);
 108 }
 109 #endif
 110
 111 #endif
 112
 113 void spl_mmc_load_image(void)
 114 {
 115         struct mmc *mmc;
 116         int err;
 117         u32 boot_mode;
 118
 119         mmc_initialize(gd->bd);
 120         /* We register only one device. So, the dev id is always 0 */
 121         mmc = find_mmc_device(0);
 122         if (!mmc) {
 123                 puts("spl: mmc device not found!!\n");
 124                 hang();
 125         }
 126
 127         err = mmc_init(mmc);
 128         if (err) {
 129                 printf("spl: mmc init failed: err - %d\n", err);
 130                 hang();
 131         }
 132
 133         boot_mode = spl_boot_mode();
 134         if (boot_mode == MMCSD_MODE_RAW) {
 135                 debug("boot mode - RAW\n");
 136 #ifdef CONFIG_SPL_OS_BOOT
 137                 if (spl_start_uboot() || mmc_load_image_raw_os(mmc))
 138 #endif
 139                 err = mmc_load_image_raw(mmc,
 140                                          CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 141 #ifdef CONFIG_SPL_FAT_SUPPORT
 142         } else if (boot_mode == MMCSD_MODE_FAT) {
 143                 debug("boot mode - FAT\n");
 144
 145                 err = fat_register_device(&mmc->block_dev,
 146                                           CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION);
 147                 if (err) {
 148                         printf("spl: fat register err - %d\n", err);
 149                         hang();
 150                 }
 151
 152 #ifdef CONFIG_SPL_OS_BOOT
 153                 if (spl_start_uboot() || mmc_load_image_fat_os(mmc))
 154 #endif
 155                 err = mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
 156 #endif
 157         } else {
 158                 puts("spl: wrong MMC boot mode\n");
 159                 hang();
 160         }
 161
 162         if (err)
 163                 hang();
 164 }