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         spl_parse_image_header(header);
  52
  53         err = ext4fs_read((char *)spl_image.load_addr, filelen, &actlen);
  54
  55 end:
  56 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  57         if (err < 0)
  58                 printf("%s: error reading image %s, err - %d\n",
  59                        __func__, filename, err);
  60 #endif
  61
  62         return err < 0;
  63 }
  64
  65 #ifdef CONFIG_SPL_OS_BOOT
  66 int spl_load_image_ext_os(struct blk_desc *block_dev, int partition)
  67 {
  68         int err;
  69         __maybe_unused loff_t filelen, actlen;
  70         disk_partition_t part_info = {};
  71         __maybe_unused char *file;
  72
  73         if (part_get_info(block_dev, partition, &part_info)) {
  74                 printf("spl: no partition table found\n");
  75                 return -1;
  76         }
  77
  78         ext4fs_set_blk_dev(block_dev, &part_info);
  79
  80         err = ext4fs_mount(0);
  81         if (!err) {
  82 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  83                 printf("%s: ext4fs mount err - %d\n", __func__, err);
  84 #endif
  85                 return -1;
  86         }
  87
  88 #if defined(CONFIG_SPL_ENV_SUPPORT) && defined(CONFIG_SPL_OS_BOOT)
  89         file = getenv("falcon_args_file");
  90         if (file) {
  91                 err = ext4fs_open(file, &filelen);
  92                 if (err < 0) {
  93                         puts("spl: ext4fs_open failed\n");
  94                         goto defaults;
  95                 }
  96                 err = ext4fs_read((void *)CONFIG_SYS_SPL_ARGS_ADDR, filelen, &actlen);
  97                 if (err < 0) {
  98                         printf("spl: error reading image %s, err - %d, falling back to default\n",
  99                                file, err);
 100                         goto defaults;
 101                 }
 102                 file = getenv("falcon_image_file");
 103                 if (file) {
 104                         err = spl_load_image_ext(block_dev, partition, file);
 105                         if (err != 0) {
 106                                 puts("spl: falling back to default\n");
 107                                 goto defaults;
 108                         }
 109
 110                         return 0;
 111                 } else {
 112                         puts("spl: falcon_image_file not set in environment, falling back to default\n");
 113                 }
 114         } else {
 115                 puts("spl: falcon_args_file not set in environment, falling back to default\n");
 116         }
 117
 118 defaults:
 119 #endif
 120
 121         err = ext4fs_open(CONFIG_SPL_FS_LOAD_ARGS_NAME, &filelen);
 122         if (err < 0)
 123                 puts("spl: ext4fs_open failed\n");
 124
 125         err = ext4fs_read((void *)CONFIG_SYS_SPL_ARGS_ADDR, filelen, &actlen);
 126         if (err < 0) {
 127 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 128                 printf("%s: error reading image %s, err - %d\n",
 129                        __func__, CONFIG_SPL_FS_LOAD_ARGS_NAME, err);
 130 #endif
 131                 return -1;
 132         }
 133
 134         return spl_load_image_ext(block_dev, partition,
 135                         CONFIG_SPL_FS_LOAD_KERNEL_NAME);
 136 }
 137 #else
 138 int spl_load_image_ext_os(struct blk_desc *block_dev, int partition)
 139 {
 140         return -ENOSYS;
 141 }
 142 #endif
 143 #endif