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 <image.h>
  10
  11 #ifdef CONFIG_SPL_EXT_SUPPORT
  12 int spl_load_image_ext(block_dev_desc_t *block_dev,
  13                                                 int partition,
  14                                                 const char *filename)
  15 {
  16         s32 err;
  17         struct image_header *header;
  18         int filelen;
  19         disk_partition_t part_info = {};
  20
  21         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  22                                                 sizeof(struct image_header));
  23
  24         if (get_partition_info(block_dev,
  25                                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         filelen = err = ext4fs_open(filename);
  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));
  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);
  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(block_dev_desc_t *block_dev, int partition)
  67 {
  68         int err;
  69         int filelen;
  70         disk_partition_t part_info = {};
  71         __maybe_unused char *file;
  72
  73         if (get_partition_info(block_dev,
  74                                partition, &part_info)) {
  75                 printf("spl: no partition table found\n");
  76                 return -1;
  77         }
  78
  79         ext4fs_set_blk_dev(block_dev, &part_info);
  80
  81         err = ext4fs_mount(0);
  82         if (!err) {
  83 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  84                 printf("%s: ext4fs mount err - %d\n", __func__, err);
  85 #endif
  86                 return -1;
  87         }
  88
  89 #if defined(CONFIG_SPL_ENV_SUPPORT) && defined(CONFIG_SPL_OS_BOOT)
  90         file = getenv("falcon_args_file");
  91         if (file) {
  92                 filelen = err = ext4fs_open(file);
  93                 if (err < 0) {
  94                         puts("spl: ext4fs_open failed\n");
  95                         goto defaults;
  96                 }
  97                 err = ext4fs_read((void *)CONFIG_SYS_SPL_ARGS_ADDR, filelen);
  98                 if (err <= 0) {
  99                         printf("spl: error reading image %s, err - %d, falling back to default\n",
 100                                file, err);
 101                         goto defaults;
 102                 }
 103                 file = getenv("falcon_image_file");
 104                 if (file) {
 105                         err = spl_load_image_ext(block_dev, partition, file);
 106                         if (err != 0) {
 107                                 puts("spl: falling back to default\n");
 108                                 goto defaults;
 109                         }
 110
 111                         return 0;
 112                 } else {
 113                         puts("spl: falcon_image_file not set in environment, falling back to default\n");
 114                 }
 115         } else {
 116                 puts("spl: falcon_args_file not set in environment, falling back to default\n");
 117         }
 118
 119 defaults:
 120 #endif
 121
 122         filelen = err = ext4fs_open(CONFIG_SPL_FS_LOAD_ARGS_NAME);
 123         if (err < 0)
 124                 puts("spl: ext4fs_open failed\n");
 125
 126         err = ext4fs_read((void *)CONFIG_SYS_SPL_ARGS_ADDR, filelen);
 127         if (err <= 0) {
 128 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 129                 printf("%s: error reading image %s, err - %d\n",
 130                        __func__, CONFIG_SPL_FS_LOAD_ARGS_NAME, err);
 131 #endif
 132                 return -1;
 133         }
 134
 135         return spl_load_image_ext(block_dev, partition,
 136                         CONFIG_SPL_FS_LOAD_KERNEL_NAME);
 137 }
 138 #endif
 139 #endif