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 #ifdef CONFIG_SPL_FAT_SUPPORT
 104         } else if (boot_mode == MMCSD_MODE_FAT) {
 105                 debug("boot mode - FAT\n");
 106 #ifdef CONFIG_SPL_OS_BOOT
 107                 if (spl_start_uboot() || spl_load_image_fat_os(&mmc->block_dev,
 108                                                                 CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION))
 109 #endif
 110                 err = spl_load_image_fat(&mmc->block_dev,
 111                                         CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION,
 112                                         CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
 113 #endif
 114         } else {
 115 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 116                 puts("spl: wrong MMC boot mode\n");
 117 #endif
 118                 hang();
 119         }
 120
 121         if (err)
 122                 hang();
 123 }