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