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(struct blk_desc *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 (part_get_info(block_dev, partition, &part_info)) {
  26                 printf("spl: no partition table found\n");
  27                 return -1;
  28         }
  29
  30         ext4fs_set_blk_dev(block_dev, &part_info);
  31
  32         err = ext4fs_mount(0);
  33         if (!err) {
  34 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  35                 printf("%s: ext4fs mount err - %d\n", __func__, err);
  36 #endif
  37                 goto end;
  38         }
  39
  40         err = ext4fs_open(filename, &filelen);
  41         if (err < 0) {
  42                 puts("spl: ext4fs_open failed\n");
  43                 goto end;
  44         }
  45         err = ext4fs_read((char *)header, sizeof(struct image_header), &actlen);
  46         if (err < 0) {
  47                 puts("spl: ext4fs_read failed\n");
  48                 goto end;
  49         }
  50
  51         err = spl_parse_image_header(header);
  52         if (err < 0) {
  53                 puts("spl: ext4fs_read failed\n");
  54                 goto end;
  55         }
  56
  57         err = ext4fs_read((char *)spl_image.load_addr, filelen, &actlen);
  58
  59 end:
  60 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  61         if (err < 0)
  62                 printf("%s: error reading image %s, err - %d\n",
  63                        __func__, filename, err);
  64 #endif
  65
  66         return err < 0;
  67 }
  68
  69 #ifdef CONFIG_SPL_OS_BOOT
  70 int spl_load_image_ext_os(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
  92 #if defined(CONFIG_SPL_ENV_SUPPORT) && defined(CONFIG_SPL_OS_BOOT)
  93         file = getenv("falcon_args_file");
  94         if (file) {
  95                 err = ext4fs_open(file, &filelen);
  96                 if (err < 0) {
  97                         puts("spl: ext4fs_open failed\n");
  98                         goto defaults;
  99                 }
 100                 err = ext4fs_read((void *)CONFIG_SYS_SPL_ARGS_ADDR, filelen, &actlen);
 101                 if (err < 0) {
 102                         printf("spl: error reading image %s, err - %d, falling back to default\n",
 103                                file, err);
 104                         goto defaults;
 105                 }
 106                 file = getenv("falcon_image_file");
 107                 if (file) {
 108                         err = spl_load_image_ext(block_dev, 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, 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(block_dev, partition,
 139                         CONFIG_SPL_FS_LOAD_KERNEL_NAME);
 140 }
 141 #else
 142 int spl_load_image_ext_os(struct blk_desc *block_dev, int partition)
 143 {
 144         return -ENOSYS;
 145 }
 146 #endif
 147 #endif