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 spl_image_info *spl_image,
  14                        struct blk_desc *block_dev, 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, 0, 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(spl_image, header);
  52         if (err < 0) {
  53                 puts("spl: ext: failed to parse image header\n");
  54                 goto end;
  55         }
  56
  57         err = ext4fs_read((char *)spl_image->load_addr, 0, 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 spl_image_info *spl_image,
  71                           struct blk_desc *block_dev, int partition)
  72 {
  73         int err;
  74         __maybe_unused loff_t filelen, actlen;
  75         disk_partition_t part_info = {};
  76         __maybe_unused char *file;
  77
  78         if (part_get_info(block_dev, partition, &part_info)) {
  79                 printf("spl: no partition table found\n");
  80                 return -1;
  81         }
  82
  83         ext4fs_set_blk_dev(block_dev, &part_info);
  84
  85         err = ext4fs_mount(0);
  86         if (!err) {
  87 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  88                 printf("%s: ext4fs mount err - %d\n", __func__, err);
  89 #endif
  90                 return -1;
  91         }
  92 #if defined(CONFIG_SPL_ENV_SUPPORT)
  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, 0, 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(spl_image, block_dev,
 109                                                  partition, file);
 110                         if (err != 0) {
 111                                 puts("spl: falling back to default\n");
 112                                 goto defaults;
 113                         }
 114
 115                         return 0;
 116                 } else {
 117                         puts("spl: falcon_image_file not set in environment, falling back to default\n");
 118                 }
 119         } else {
 120                 puts("spl: falcon_args_file not set in environment, falling back to default\n");
 121         }
 122
 123 defaults:
 124 #endif
 125
 126         err = ext4fs_open(CONFIG_SPL_FS_LOAD_ARGS_NAME, &filelen);
 127         if (err < 0)
 128                 puts("spl: ext4fs_open failed\n");
 129
 130         err = ext4fs_read((void *)CONFIG_SYS_SPL_ARGS_ADDR, 0, filelen, &actlen);
 131         if (err < 0) {
 132 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 133                 printf("%s: error reading image %s, err - %d\n",
 134                        __func__, CONFIG_SPL_FS_LOAD_ARGS_NAME, err);
 135 #endif
 136                 return -1;
 137         }
 138
 139         return spl_load_image_ext(spl_image, block_dev, partition,
 140                         CONFIG_SPL_FS_LOAD_KERNEL_NAME);
 141 }
 142 #else
 143 int spl_load_image_ext_os(struct spl_image_info *spl_image,
 144                           struct blk_desc *block_dev, int partition)
 145 {
 146         return -ENOSYS;
 147 }
 148 #endif
 149 #endif