git.sur5r.net Git - u-boot/blob - 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 <dm.h>
  11 #include <spl.h>
  12 #include <linux/compiler.h>
  13 #include <errno.h>
  14 #include <asm/u-boot.h>
  15 #include <errno.h>
  16 #include <mmc.h>
  17 #include <image.h>
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 static int mmc_load_image_raw_sector(struct mmc *mmc, unsigned long sector)
  22 {
  23         unsigned long count;
  24         u32 image_size_sectors;
  25         struct image_header *header;
  26
  27         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  28                                          sizeof(struct image_header));
  29
  30         /* read image header to find the image size & load address */
  31         count = mmc->block_dev.block_read(0, sector, 1, header);
  32         debug("read sector %lx, count=%lu\n", sector, count);
  33         if (count == 0)
  34                 goto end;
  35
  36         if (image_get_magic(header) != IH_MAGIC) {
  37                 puts("bad magic\n");
  38                 return -1;
  39         }
  40
  41         spl_parse_image_header(header);
  42
  43         /* convert size to sectors - round up */
  44         image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) /
  45                              mmc->read_bl_len;
  46
  47         /* Read the header too to avoid extra memcpy */
  48         count = mmc->block_dev.block_read(0, sector, image_size_sectors,
  49                                           (void *)(ulong)spl_image.load_addr);
  50         debug("read %x sectors to %x\n", image_size_sectors,
  51               spl_image.load_addr);
  52
  53 end:
  54         if (count == 0) {
  55 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  56                 puts("spl: mmc block read error\n");
  57 #endif
  58                 return -1;
  59         }
  60
  61         return 0;
  62 }
  63
  64 #ifdef CONFIG_DM_MMC
  65 static int spl_mmc_find_device(struct mmc **mmc)
  66 {
  67         struct udevice *dev;
  68         int err;
  69
  70         err = mmc_initialize(NULL);
  71         if (err) {
  72 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  73                 printf("spl: could not initialize mmc. error: %d\n", err);
  74 #endif
  75                 return err;
  76         }
  77
  78         err = uclass_get_device(UCLASS_MMC, 0, &dev);
  79         if (err) {
  80 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  81                 printf("spl: could not find mmc device. error: %d\n", err);
  82 #endif
  83                 return err;
  84         }
  85
  86         *mmc = NULL;
  87         *mmc = mmc_get_mmc_dev(dev);
  88         return *mmc != NULL ? 0 : -ENODEV;
  89 }
  90 #else
  91 static int spl_mmc_find_device(struct mmc **mmc)
  92 {
  93         int err;
  94
  95         err = mmc_initialize(gd->bd);
  96         if (err) {
  97 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  98                 printf("spl: could not initialize mmc. error: %d\n", err);
  99 #endif
 100                 return err;
 101         }
 102
 103         /* We register only one device. So, the dev id is always 0 */
 104         *mmc = find_mmc_device(0);
 105         if (!*mmc) {
 106 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 107                 puts("spl: mmc device not found\n");
 108 #endif
 109                 return -ENODEV;
 110         }
 111
 112         return 0;
 113 }
 114 #endif
 115
 116 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
 117 static int mmc_load_image_raw_partition(struct mmc *mmc, int partition)
 118 {
 119         disk_partition_t info;
 120         int err;
 121
 122         err = get_partition_info(&mmc->block_dev, partition, &info);
 123         if (err) {
 124 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 125                 puts("spl: partition error\n");
 126 #endif
 127                 return -1;
 128         }
 129
 130 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR
 131         return mmc_load_image_raw_sector(mmc, info.start +
 132                                          CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 133 #else
 134         return mmc_load_image_raw_sector(mmc, info.start);
 135 #endif
 136 }
 137 #else
 138 #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION -1
 139 static int mmc_load_image_raw_partition(struct mmc *mmc, int partition)
 140 {
 141         return -ENOSYS;
 142 }
 143 #endif
 144
 145 #ifdef CONFIG_SPL_OS_BOOT
 146 static int mmc_load_image_raw_os(struct mmc *mmc)
 147 {
 148         unsigned long count;
 149
 150         count = mmc->block_dev.block_read(0,
 151                 CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
 152                 CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
 153                 (void *) CONFIG_SYS_SPL_ARGS_ADDR);
 154         if (count == 0) {
 155 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 156                 puts("spl: mmc block read error\n");
 157 #endif
 158                 return -1;
 159         }
 160
 161         return mmc_load_image_raw_sector(mmc,
 162                 CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
 163 }
 164 #else
 165 int spl_start_uboot(void)
 166 {
 167         return 1;
 168 }
 169 static int mmc_load_image_raw_os(struct mmc *mmc)
 170 {
 171         return -ENOSYS;
 172 }
 173 #endif
 174
 175 #ifdef CONFIG_SYS_MMCSD_FS_BOOT_PARTITION
 176 int spl_mmc_do_fs_boot(struct mmc *mmc)
 177 {
 178         int err = -ENOSYS;
 179
 180 #ifdef CONFIG_SPL_FAT_SUPPORT
 181         if (!spl_start_uboot()) {
 182                 err = spl_load_image_fat_os(&mmc->block_dev,
 183                         CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
 184                 if (!err)
 185                         return err;
 186         }
 187 #ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
 188         err = spl_load_image_fat(&mmc->block_dev,
 189                                  CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 190                                  CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 191         if (!err)
 192                 return err;
 193 #endif
 194 #endif
 195 #ifdef CONFIG_SPL_EXT_SUPPORT
 196         if (!spl_start_uboot()) {
 197                 err = spl_load_image_ext_os(&mmc->block_dev,
 198                         CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
 199                 if (!err)
 200                         return err;
 201         }
 202 #ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
 203         err = spl_load_image_ext(&mmc->block_dev,
 204                                  CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 205                                  CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 206         if (!err)
 207                 return err;
 208 #endif
 209 #endif
 210
 211 #if defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
 212         err = -ENOENT;
 213 #endif
 214
 215         return err;
 216 }
 217 #else
 218 int spl_mmc_do_fs_boot(struct mmc *mmc)
 219 {
 220         return -ENOSYS;
 221 }
 222 #endif
 223
 224 int spl_mmc_load_image(void)
 225 {
 226         struct mmc *mmc;
 227         u32 boot_mode;
 228         int err = 0;
 229         __maybe_unused int part;
 230
 231         err = spl_mmc_find_device(&mmc);
 232         if (err)
 233                 return err;
 234
 235         err = mmc_init(mmc);
 236         if (err) {
 237 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 238                 printf("spl: mmc init failed with error: %d\n", err);
 239 #endif
 240                 return err;
 241         }
 242
 243         boot_mode = spl_boot_mode();
 244         err = -EINVAL;
 245         switch (boot_mode) {
 246         case MMCSD_MODE_EMMCBOOT:
 247                         /*
 248                          * We need to check what the partition is configured to.
 249                          * 1 and 2 match up to boot0 / boot1 and 7 is user data
 250                          * which is the first physical partition (0).
 251                          */
 252                         part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
 253
 254                         if (part == 7)
 255                                 part = 0;
 256
 257                         err = mmc_switch_part(0, part);
 258                         if (err) {
 259 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 260                                 puts("spl: mmc partition switch failed\n");
 261 #endif
 262                                 return err;
 263                         }
 264                         /* Fall through */
 265         case MMCSD_MODE_RAW:
 266                 debug("spl: mmc boot mode: raw\n");
 267
 268                 if (!spl_start_uboot()) {
 269                         err = mmc_load_image_raw_os(mmc);
 270                         if (!err)
 271                                 return err;
 272                 }
 273
 274                 err = mmc_load_image_raw_partition(mmc,
 275                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 276                 if (!err)
 277                         return err;
 278 #if defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR)
 279                 err = mmc_load_image_raw_sector(mmc,
 280                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 281                 if (!err)
 282                         return err;
 283 #endif
 284                 break;
 285         case MMCSD_MODE_FS:
 286                 debug("spl: mmc boot mode: fs\n");
 287
 288                 err = spl_mmc_do_fs_boot(mmc);
 289                 if (!err)
 290                         return err;
 291
 292                 break;
 293         case MMCSD_MODE_UNDEFINED:
 294 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 295         default:
 296                 puts("spl: mmc: wrong boot mode\n");
 297 #endif
 298         }
 299
 300         return err;
 301 }