common/spl/spl_ext.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2
   3 #include <common.h>
   4 #include <env.h>
   5 #include <mapmem.h>
   6 #include <part.h>
   7 #include <spl.h>
   8 #include <asm/u-boot.h>
   9 #include <ext4fs.h>
  10 #include <errno.h>
  11 #include <image.h>
  12
  13 int spl_load_image_ext(struct spl_image_info *spl_image,
  14                        struct spl_boot_device *bootdev,
  15                        struct blk_desc *block_dev, int partition,
  16                        const char *filename)
  17 {
  18         s32 err;
  19         struct legacy_img_hdr *header;
  20         loff_t filelen, actlen;
  21         struct disk_partition part_info = {};
  22
  23         header = spl_get_load_buffer(-sizeof(*header), sizeof(*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(part_info.size);
  33         if (!err) {
  34 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  35                 printf("%s: ext4fs mount err - %d\n", __func__, err);
  36 #endif
  37                 return -1;
  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 legacy_img_hdr), &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, bootdev, header);
  52         if (err < 0) {
  53                 puts("spl: ext: failed to parse image header\n");
  54                 goto end;
  55         }
  56
  57         err = ext4fs_read(map_sysmem(spl_image->load_addr, filelen), 0, filelen,
  58                           &actlen);
  59
  60 end:
  61 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  62         if (err < 0)
  63                 printf("%s: error reading image %s, err - %d\n",
  64                        __func__, filename, err);
  65 #endif
  66
  67         return err < 0;
  68 }
  69
  70 #if CONFIG_IS_ENABLED(OS_BOOT)
  71 int spl_load_image_ext_os(struct spl_image_info *spl_image,
  72                           struct spl_boot_device *bootdev,
  73                           struct blk_desc *block_dev, int partition)
  74 {
  75         int err;
  76         __maybe_unused loff_t filelen, actlen;
  77         struct disk_partition part_info = {};
  78         __maybe_unused char *file;
  79
  80         if (part_get_info(block_dev, partition, &part_info)) {
  81                 printf("spl: no partition table found\n");
  82                 return -1;
  83         }
  84
  85         ext4fs_set_blk_dev(block_dev, &part_info);
  86
  87         err = ext4fs_mount(part_info.size);
  88         if (!err) {
  89 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  90                 printf("%s: ext4fs mount err - %d\n", __func__, err);
  91 #endif
  92                 return -1;
  93         }
  94 #if defined(CONFIG_SPL_ENV_SUPPORT)
  95         file = env_get("falcon_args_file");
  96         if (file) {
  97                 err = ext4fs_open(file, &filelen);
  98                 if (err < 0) {
  99                         puts("spl: ext4fs_open failed\n");
 100                         goto defaults;
 101                 }
 102                 err = ext4fs_read((void *)CONFIG_SPL_PAYLOAD_ARGS_ADDR, 0, filelen, &actlen);
 103                 if (err < 0) {
 104                         printf("spl: error reading image %s, err - %d, falling back to default\n",
 105                                file, err);
 106                         goto defaults;
 107                 }
 108                 file = env_get("falcon_image_file");
 109                 if (file) {
 110                         err = spl_load_image_ext(spl_image, bootdev, block_dev,
 111                                                  partition, file);
 112                         if (err != 0) {
 113                                 puts("spl: falling back to default\n");
 114                                 goto defaults;
 115                         }
 116
 117                         return 0;
 118                 } else {
 119                         puts("spl: falcon_image_file not set in environment, falling back to default\n");
 120                 }
 121         } else {
 122                 puts("spl: falcon_args_file not set in environment, falling back to default\n");
 123         }
 124
 125 defaults:
 126 #endif
 127
 128         err = ext4fs_open(CONFIG_SPL_FS_LOAD_ARGS_NAME, &filelen);
 129         if (err < 0)
 130                 puts("spl: ext4fs_open failed\n");
 131
 132         err = ext4fs_read((void *)CONFIG_SPL_PAYLOAD_ARGS_ADDR, 0, filelen, &actlen);
 133         if (err < 0) {
 134 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 135                 printf("%s: error reading image %s, err - %d\n",
 136                        __func__, CONFIG_SPL_FS_LOAD_ARGS_NAME, err);
 137 #endif
 138                 return -1;
 139         }
 140
 141         return spl_load_image_ext(spl_image, bootdev, block_dev, partition,
 142                         CONFIG_SPL_FS_LOAD_KERNEL_NAME);
 143 }
 144 #else
 145 int spl_load_image_ext_os(struct spl_image_info *spl_image,
 146                           struct spl_boot_device *bootdev,
 147                           struct blk_desc *block_dev, int partition)
 148 {
 149         return -ENOSYS;
 150 }
 151 #endif