common/spl/spl_ext.c

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