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 spl_boot_device *bootdev,
  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         struct disk_partition part_info = {};
  21
  22         header = spl_get_load_buffer(-sizeof(*header), sizeof(*header));
  23
  24         if (part_get_info(block_dev, partition, &part_info)) {
  25                 printf("spl: no partition table found\n");
  26                 return -1;
  27         }
  28
  29         ext4fs_set_blk_dev(block_dev, &part_info);
  30
  31         err = ext4fs_mount(0);
  32         if (!err) {
  33 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  34                 printf("%s: ext4fs mount err - %d\n", __func__, err);
  35 #endif
  36                 return -1;
  37         }
  38
  39         err = ext4fs_open(filename, &filelen);
  40         if (err < 0) {
  41                 puts("spl: ext4fs_open failed\n");
  42                 goto end;
  43         }
  44         err = ext4fs_read((char *)header, 0, sizeof(struct image_header), &actlen);
  45         if (err < 0) {
  46                 puts("spl: ext4fs_read failed\n");
  47                 goto end;
  48         }
  49
  50         err = spl_parse_image_header(spl_image, bootdev, header);
  51         if (err < 0) {
  52                 puts("spl: ext: failed to parse image header\n");
  53                 goto end;
  54         }
  55
  56         err = ext4fs_read((char *)spl_image->load_addr, 0, filelen, &actlen);
  57
  58 end:
  59 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  60         if (err < 0)
  61                 printf("%s: error reading image %s, err - %d\n",
  62                        __func__, filename, err);
  63 #endif
  64
  65         return err < 0;
  66 }
  67
  68 #if CONFIG_IS_ENABLED(OS_BOOT)
  69 int spl_load_image_ext_os(struct spl_image_info *spl_image,
  70                           struct spl_boot_device *bootdev,
  71                           struct blk_desc *block_dev, int partition)
  72 {
  73         int err;
  74         __maybe_unused loff_t filelen, actlen;
  75         struct disk_partition 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 = env_get("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 = env_get("falcon_image_file");
 107                 if (file) {
 108                         err = spl_load_image_ext(spl_image, bootdev, 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, bootdev, 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 spl_boot_device *bootdev,
 145                           struct blk_desc *block_dev, int partition)
 146 {
 147         return -ENOSYS;
 148 }
 149 #endif