common/spl/spl_ext.c

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