cmd/zfs.c

   1 /*
   2  *
   3  * ZFS filesystem porting to Uboot by
   4  * Jorgen Lundman <lundman at lundman.net>
   5  *
   6  * zfsfs support
   7  * made from existing GRUB Sources by Sun, GNU and others.
   8  *
   9  * SPDX-License-Identifier:     GPL-2.0+
  10  */
  11
  12 #include <common.h>
  13 #include <part.h>
  14 #include <config.h>
  15 #include <command.h>
  16 #include <image.h>
  17 #include <linux/ctype.h>
  18 #include <asm/byteorder.h>
  19 #include <zfs_common.h>
  20 #include <linux/stat.h>
  21 #include <malloc.h>
  22
  23 #if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
  24 #include <usb.h>
  25 #endif
  26
  27 #if !CONFIG_IS_ENABLED(DOS_PARTITION) && !CONFIG_IS_ENABLED(EFI_PARTITION)
  28 #error DOS or EFI partition support must be selected
  29 #endif
  30
  31 #define DOS_PART_MAGIC_OFFSET   0x1fe
  32 #define DOS_FS_TYPE_OFFSET      0x36
  33 #define DOS_FS32_TYPE_OFFSET    0x52
  34
  35 static int do_zfs_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  36 {
  37         char *filename = NULL;
  38         int dev;
  39         int part;
  40         ulong addr = 0;
  41         disk_partition_t info;
  42         struct blk_desc *dev_desc;
  43         char buf[12];
  44         unsigned long count;
  45         const char *addr_str;
  46         struct zfs_file zfile;
  47         struct device_s vdev;
  48
  49         if (argc < 3)
  50                 return CMD_RET_USAGE;
  51
  52         count = 0;
  53         addr = simple_strtoul(argv[3], NULL, 16);
  54         filename = getenv("bootfile");
  55         switch (argc) {
  56         case 3:
  57                 addr_str = getenv("loadaddr");
  58                 if (addr_str != NULL)
  59                         addr = simple_strtoul(addr_str, NULL, 16);
  60                 else
  61                         addr = CONFIG_SYS_LOAD_ADDR;
  62
  63                 break;
  64         case 4:
  65                 break;
  66         case 5:
  67                 filename = argv[4];
  68                 break;
  69         case 6:
  70                 filename = argv[4];
  71                 count = simple_strtoul(argv[5], NULL, 16);
  72                 break;
  73
  74         default:
  75                 return cmd_usage(cmdtp);
  76         }
  77
  78         if (!filename) {
  79                 puts("** No boot file defined **\n");
  80                 return 1;
  81         }
  82
  83         part = blk_get_device_part_str(argv[1], argv[2], &dev_desc, &info, 1);
  84         if (part < 0)
  85                 return 1;
  86
  87         dev = dev_desc->devnum;
  88         printf("Loading file \"%s\" from %s device %d%c%c\n",
  89                 filename, argv[1], dev,
  90                 part ? ':' : ' ', part ? part + '0' : ' ');
  91
  92         zfs_set_blk_dev(dev_desc, &info);
  93         vdev.part_length = info.size;
  94
  95         memset(&zfile, 0, sizeof(zfile));
  96         zfile.device = &vdev;
  97         if (zfs_open(&zfile, filename)) {
  98                 printf("** File not found %s **\n", filename);
  99                 return 1;
 100         }
 101
 102         if ((count < zfile.size) && (count != 0))
 103                 zfile.size = (uint64_t)count;
 104
 105         if (zfs_read(&zfile, (char *)addr, zfile.size) != zfile.size) {
 106                 printf("** Unable to read \"%s\" from %s %d:%d **\n",
 107                            filename, argv[1], dev, part);
 108                 zfs_close(&zfile);
 109                 return 1;
 110         }
 111
 112         zfs_close(&zfile);
 113
 114         /* Loading ok, update default load address */
 115         load_addr = addr;
 116
 117         printf("%llu bytes read\n", zfile.size);
 118         env_set_hex("filesize", zfile.size);
 119
 120         return 0;
 121 }
 122
 123
 124 int zfs_print(const char *entry, const struct zfs_dirhook_info *data)
 125 {
 126         printf("%s %s\n",
 127                    data->dir ? "<DIR> " : "              ",
 128                    entry);
 129         return 0; /* 0 continue, 1 stop */
 130 }
 131
 132
 133
 134 static int do_zfs_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 135 {
 136         const char *filename = "/";
 137         int part;
 138         struct blk_desc *dev_desc;
 139         disk_partition_t info;
 140         struct device_s vdev;
 141
 142         if (argc < 2)
 143                 return cmd_usage(cmdtp);
 144
 145         if (argc == 4)
 146                 filename = argv[3];
 147
 148         part = blk_get_device_part_str(argv[1], argv[2], &dev_desc, &info, 1);
 149         if (part < 0)
 150                 return 1;
 151
 152         zfs_set_blk_dev(dev_desc, &info);
 153         vdev.part_length = info.size;
 154
 155         zfs_ls(&vdev, filename,
 156                    zfs_print);
 157
 158         return 0;
 159 }
 160
 161
 162 U_BOOT_CMD(zfsls, 4, 1, do_zfs_ls,
 163                    "list files in a directory (default /)",
 164                    "<interface> <dev[:part]> [directory]\n"
 165                    "      - list files from 'dev' on 'interface' in a '/DATASET/@/$dir/'");
 166
 167 U_BOOT_CMD(zfsload, 6, 0, do_zfs_load,
 168                    "load binary file from a ZFS filesystem",
 169                    "<interface> <dev[:part]> [addr] [filename] [bytes]\n"
 170                    "      - load binary file '/DATASET/@/$dir/$file' from 'dev' on 'interface'\n"
 171                    "             to address 'addr' from ZFS filesystem");