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