common/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  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of
  12  * the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  22  * MA 02111-1307 USA
  23  *
  24  */
  25
  26 #include <common.h>
  27 #include <part.h>
  28 #include <config.h>
  29 #include <command.h>
  30 #include <image.h>
  31 #include <linux/ctype.h>
  32 #include <asm/byteorder.h>
  33 #include <zfs_common.h>
  34 #include <linux/stat.h>
  35 #include <malloc.h>
  36
  37 #if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
  38 #include <usb.h>
  39 #endif
  40
  41 #if !defined(CONFIG_DOS_PARTITION) && !defined(CONFIG_EFI_PARTITION)
  42 #error DOS or EFI partition support must be selected
  43 #endif
  44
  45 #define DOS_PART_MAGIC_OFFSET   0x1fe
  46 #define DOS_FS_TYPE_OFFSET      0x36
  47 #define DOS_FS32_TYPE_OFFSET    0x52
  48
  49 static int do_zfs_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  50 {
  51         char *filename = NULL;
  52         int dev;
  53         int part;
  54         ulong addr = 0;
  55         disk_partition_t info;
  56         block_dev_desc_t *dev_desc;
  57         char buf[12];
  58         unsigned long count;
  59         const char *addr_str;
  60         struct zfs_file zfile;
  61         struct device_s vdev;
  62
  63         if (argc < 3)
  64                 return CMD_RET_USAGE;
  65
  66         count = 0;
  67         addr = simple_strtoul(argv[3], NULL, 16);
  68         filename = getenv("bootfile");
  69         switch (argc) {
  70         case 3:
  71                 addr_str = getenv("loadaddr");
  72                 if (addr_str != NULL)
  73                         addr = simple_strtoul(addr_str, NULL, 16);
  74                 else
  75                         addr = CONFIG_SYS_LOAD_ADDR;
  76
  77                 break;
  78         case 4:
  79                 break;
  80         case 5:
  81                 filename = argv[4];
  82                 break;
  83         case 6:
  84                 filename = argv[4];
  85                 count = simple_strtoul(argv[5], NULL, 16);
  86                 break;
  87
  88         default:
  89                 return cmd_usage(cmdtp);
  90         }
  91
  92         if (!filename) {
  93                 puts("** No boot file defined **\n");
  94                 return 1;
  95         }
  96
  97         part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info, 1);
  98         if (part < 0)
  99                 return 1;
 100
 101         dev = dev_desc->dev;
 102         printf("Loading file \"%s\" from %s device %d%c%c\n",
 103                 filename, argv[1], dev,
 104                 part ? ':' : ' ', part ? part + '0' : ' ');
 105
 106         zfs_set_blk_dev(dev_desc, &info);
 107         vdev.part_length = info.size;
 108
 109         memset(&zfile, 0, sizeof(zfile));
 110         zfile.device = &vdev;
 111         if (zfs_open(&zfile, filename)) {
 112                 printf("** File not found %s\n", filename);
 113                 return 1;
 114         }
 115
 116         if ((count < zfile.size) && (count != 0))
 117                 zfile.size = (uint64_t)count;
 118
 119         if (zfs_read(&zfile, (char *)addr, zfile.size) != zfile.size) {
 120                 printf("** Unable to read \"%s\" from %s %d:%d **\n",
 121                            filename, argv[1], dev, part);
 122                 zfs_close(&zfile);
 123                 return 1;
 124         }
 125
 126         zfs_close(&zfile);
 127
 128         /* Loading ok, update default load address */
 129         load_addr = addr;
 130
 131         printf("%llu bytes read\n", zfile.size);
 132         setenv_hex("filesize", zfile.size);
 133
 134         return 0;
 135 }
 136
 137
 138 int zfs_print(const char *entry, const struct zfs_dirhook_info *data)
 139 {
 140         printf("%s %s\n",
 141                    data->dir ? "<DIR> " : "              ",
 142                    entry);
 143         return 0; /* 0 continue, 1 stop */
 144 }
 145
 146
 147
 148 static int do_zfs_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 149 {
 150         const char *filename = "/";
 151         int part;
 152         block_dev_desc_t *dev_desc;
 153         disk_partition_t info;
 154         struct device_s vdev;
 155
 156         if (argc < 2)
 157                 return cmd_usage(cmdtp);
 158
 159         if (argc == 4)
 160                 filename = argv[3];
 161
 162         part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info, 1);
 163         if (part < 0)
 164                 return 1;
 165
 166         zfs_set_blk_dev(dev_desc, &info);
 167         vdev.part_length = info.size;
 168
 169         zfs_ls(&vdev, filename,
 170                    zfs_print);
 171
 172         return 0;
 173 }
 174
 175
 176 U_BOOT_CMD(zfsls, 4, 1, do_zfs_ls,
 177                    "list files in a directory (default /)",
 178                    "<interface> <dev[:part]> [directory]\n"
 179                    "      - list files from 'dev' on 'interface' in a '/DATASET/@/$dir/'");
 180
 181 U_BOOT_CMD(zfsload, 6, 0, do_zfs_load,
 182                    "load binary file from a ZFS filesystem",
 183                    "<interface> <dev[:part]> [addr] [filename] [bytes]\n"
 184                    "      - load binary file '/DATASET/@/$dir/$file' from 'dev' on 'interface'\n"
 185                    "             to address 'addr' from ZFS filesystem");