common/spl/spl_ext.c

   1 /*
   2  * SPDX-License-Identifier:     GPL-2.0+
   3  */
   4
   5 #include <common.h>
   6 #include <spl.h>
   7 #include <asm/u-boot.h>
   8 #include <ext4fs.h>
   9 #include <errno.h>
  10 #include <image.h>
  11
  12 int spl_load_image_ext(struct spl_image_info *spl_image,
  13                        struct blk_desc *block_dev, int partition,
  14                        const char *filename)
  15 {
  16         s32 err;
  17         struct image_header *header;
  18         loff_t filelen, actlen;
  19         disk_partition_t part_info = {};
  20
  21         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  22                                                 sizeof(struct image_header));
  23
  24         if (part_get_info(block_dev, partition, &part_info)) {
  25                 printf("spl: no partition table found\n");
  26                 return -1;
  27         }
  28
  29         ext4fs_set_blk_dev(block_dev, &part_info);
  30
  31         err = ext4fs_mount(0);
  32         if (!err) {
  33 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  34                 printf("%s: ext4fs mount err - %d\n", __func__, err);
  35 #endif
  36                 goto end;
  37         }
  38
  39         err = ext4fs_open(filename, &filelen);
  40         if (err < 0) {
  41                 puts("spl: ext4fs_open failed\n");
  42                 goto end;
  43         }
  44         err = ext4fs_read((char *)header, 0, sizeof(struct image_header), &actlen);
  45         if (err < 0) {
  46                 puts("spl: ext4fs_read failed\n");
  47                 goto end;
  48         }
  49
  50         err = spl_parse_image_header(spl_image, header);
  51         if (err < 0) {
  52                 puts("spl: ext: failed to parse image header\n");
  53                 goto end;
  54         }
  55
  56         err = ext4fs_read((char *)spl_image->load_addr, 0, filelen, &actlen);
  57
  58 end:
  59 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  60         if (err < 0)
  61                 printf("%s: error reading image %s, err - %d\n",
  62                        __func__, filename, err);
  63 #endif
  64
  65         return err < 0;
  66 }
  67
  68 #ifdef CONFIG_SPL_OS_BOOT
  69 int spl_load_image_ext_os(struct spl_image_info *spl_image,
  70                           struct blk_desc *block_dev, int partition)
  71 {
  72         int err;
  73         __maybe_unused loff_t filelen, actlen;
  74         disk_partition_t part_info = {};
  75         __maybe_unused char *file;
  76
  77         if (part_get_info(block_dev, partition, &part_info)) {
  78                 printf("spl: no partition table found\n");
  79                 return -1;
  80         }
  81
  82         ext4fs_set_blk_dev(block_dev, &part_info);
  83
  84         err = ext4fs_mount(0);
  85         if (!err) {
  86 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  87                 printf("%s: ext4fs mount err - %d\n", __func__, err);
  88 #endif
  89                 return -1;
  90         }
  91 #if defined(CONFIG_SPL_ENV_SUPPORT)
  92         file = env_get("falcon_args_file");
  93         if (file) {
  94                 err = ext4fs_open(file, &filelen);
  95                 if (err < 0) {
  96                         puts("spl: ext4fs_open failed\n");
  97                         goto defaults;
  98                 }
  99                 err = ext4fs_read((void *)CONFIG_SYS_SPL_ARGS_ADDR, 0, filelen, &actlen);
 100                 if (err < 0) {
 101                         printf("spl: error reading image %s, err - %d, falling back to default\n",
 102                                file, err);
 103                         goto defaults;
 104                 }
 105                 file = env_get("falcon_image_file");
 106                 if (file) {
 107                         err = spl_load_image_ext(spl_image, block_dev,
 108                                                  partition, file);
 109                         if (err != 0) {
 110                                 puts("spl: falling back to default\n");
 111                                 goto defaults;
 112                         }
 113
 114                         return 0;
 115                 } else {
 116                         puts("spl: falcon_image_file not set in environment, falling back to default\n");
 117                 }
 118         } else {
 119                 puts("spl: falcon_args_file not set in environment, falling back to default\n");
 120         }
 121
 122 defaults:
 123 #endif
 124
 125         err = ext4fs_open(CONFIG_SPL_FS_LOAD_ARGS_NAME, &filelen);
 126         if (err < 0)
 127                 puts("spl: ext4fs_open failed\n");
 128
 129         err = ext4fs_read((void *)CONFIG_SYS_SPL_ARGS_ADDR, 0, filelen, &actlen);
 130         if (err < 0) {
 131 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 132                 printf("%s: error reading image %s, err - %d\n",
 133                        __func__, CONFIG_SPL_FS_LOAD_ARGS_NAME, err);
 134 #endif
 135                 return -1;
 136         }
 137
 138         return spl_load_image_ext(spl_image, block_dev, partition,
 139                         CONFIG_SPL_FS_LOAD_KERNEL_NAME);
 140 }
 141 #else
 142 int spl_load_image_ext_os(struct spl_image_info *spl_image,
 143                           struct blk_desc *block_dev, int partition)
 144 {
 145         return -ENOSYS;
 146 }
 147 #endif