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 #ifdef CONFIG_SPL_EXT_SUPPORT
  13 int spl_load_image_ext(block_dev_desc_t *block_dev,
  14                                                 int partition,
  15                                                 const char *filename)
  16 {
  17         s32 err;
  18         struct image_header *header;
  19         loff_t filelen, actlen;
  20         disk_partition_t part_info = {};
  21
  22         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  23                                                 sizeof(struct image_header));
  24
  25         if (get_partition_info(block_dev,
  26                                partition, &part_info)) {
  27                 printf("spl: no partition table found\n");
  28                 return -1;
  29         }
  30
  31         ext4fs_set_blk_dev(block_dev, &part_info);
  32
  33         err = ext4fs_mount(0);
  34         if (!err) {
  35 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  36                 printf("%s: ext4fs mount err - %d\n", __func__, err);
  37 #endif
  38                 goto end;
  39         }
  40
  41         err = ext4fs_open(filename, &filelen);
  42         if (err < 0) {
  43                 puts("spl: ext4fs_open failed\n");
  44                 goto end;
  45         }
  46         err = ext4fs_read((char *)header, sizeof(struct image_header), &actlen);
  47         if (err < 0) {
  48                 puts("spl: ext4fs_read failed\n");
  49                 goto end;
  50         }
  51
  52         spl_parse_image_header(header);
  53
  54         err = ext4fs_read((char *)spl_image.load_addr, 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(block_dev_desc_t *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 (get_partition_info(block_dev,
  75                                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
  90 #if defined(CONFIG_SPL_ENV_SUPPORT) && defined(CONFIG_SPL_OS_BOOT)
  91         file = getenv("falcon_args_file");
  92         if (file) {
  93                 err = ext4fs_open(file, &filelen);
  94                 if (err < 0) {
  95                         puts("spl: ext4fs_open failed\n");
  96                         goto defaults;
  97                 }
  98                 err = ext4fs_read((void *)CONFIG_SYS_SPL_ARGS_ADDR, filelen, &actlen);
  99                 if (err < 0) {
 100                         printf("spl: error reading image %s, err - %d, falling back to default\n",
 101                                file, err);
 102                         goto defaults;
 103                 }
 104                 file = getenv("falcon_image_file");
 105                 if (file) {
 106                         err = spl_load_image_ext(block_dev, 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, 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(block_dev, partition,
 137                         CONFIG_SPL_FS_LOAD_KERNEL_NAME);
 138 }
 139 #else
 140 int spl_load_image_ext_os(block_dev_desc_t *block_dev, int partition)
 141 {
 142         return -ENOSYS;
 143 }
 144 #endif
 145 #endif