common/cmd_fat.c

   1 /*
   2  * (C) Copyright 2002
   3  * Richard Jones, rjones@nexus-tech.net
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /*
  25  * Boot support
  26  */
  27 #include <common.h>
  28 #include <command.h>
  29 #include <s_record.h>
  30 #include <net.h>
  31 #include <ata.h>
  32 #include <part.h>
  33
  34 #if (CONFIG_COMMANDS & CFG_CMD_FAT)
  35
  36 #undef  DEBUG
  37
  38 #include <fat.h>
  39
  40
  41 int do_fat_fsload (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  42 {
  43         long size;
  44         unsigned long offset;
  45         unsigned long count;
  46         char buf [12];
  47         block_dev_desc_t *dev_desc=NULL;
  48         int dev=0;
  49         int part=1;
  50         char *ep;
  51
  52         if (argc < 5) {
  53                 printf ("usage: fatload <interface> <dev[:part]> <addr> <filename> [bytes]\n");
  54                 return 1;
  55         }
  56         dev = (int)simple_strtoul (argv[2], &ep, 16);
  57         dev_desc=get_dev(argv[1],dev);
  58         if (dev_desc==NULL) {
  59                 puts ("\n** Invalid boot device **\n");
  60                 return 1;
  61         }
  62         if (*ep) {
  63                 if (*ep != ':') {
  64                         puts ("\n** Invalid boot device, use `dev[:part]' **\n");
  65                         return 1;
  66                 }
  67                 part = (int)simple_strtoul(++ep, NULL, 16);
  68         }
  69         if (fat_register_device(dev_desc,part)!=0) {
  70                 printf ("\n** Unable to use %s %d:%d for fatload **\n",argv[1],dev,part);
  71                 return 1;
  72         }
  73         offset = simple_strtoul (argv[3], NULL, 16);
  74         if (argc == 6)
  75                 count = simple_strtoul (argv[5], NULL, 16);
  76         else
  77                 count = 0;
  78         size = file_fat_read (argv[4], (unsigned char *) offset, count);
  79
  80         if(size==-1) {
  81                 printf("\n** Unable to read \"%s\" from %s %d:%d **\n",argv[4],argv[1],dev,part);
  82                 return 1;
  83         }
  84
  85         printf ("\n%ld bytes read\n", size);
  86
  87         sprintf(buf, "%lX", size);
  88         setenv("filesize", buf);
  89
  90         return 0;
  91 }
  92
  93
  94 U_BOOT_CMD(
  95         fatload,        6,      0,      do_fat_fsload,
  96         "fatload - load binary file from a dos filesystem\n",
  97         "<interface> <dev[:part]>  <addr> <filename> [bytes]\n"
  98         "    - load binary file 'filename' from 'dev' on 'interface'\n"
  99         "      to address 'addr' from dos filesystem\n"
 100 );
 101
 102 int do_fat_ls (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 103 {
 104         char *filename = "/";
 105         int ret;
 106         int dev=0;
 107         int part=1;
 108         char *ep;
 109         block_dev_desc_t *dev_desc=NULL;
 110
 111         if (argc < 3) {
 112                 printf ("usage: fatls <interface> <dev[:part]> [directory]\n");
 113                 return (0);
 114         }
 115         dev = (int)simple_strtoul (argv[2], &ep, 16);
 116         dev_desc=get_dev(argv[1],dev);
 117         if (dev_desc==NULL) {
 118                 puts ("\n** Invalid boot device **\n");
 119                 return 1;
 120         }
 121         if (*ep) {
 122                 if (*ep != ':') {
 123                         puts ("\n** Invalid boot device, use `dev[:part]' **\n");
 124                         return 1;
 125                 }
 126                 part = (int)simple_strtoul(++ep, NULL, 16);
 127         }
 128         if (fat_register_device(dev_desc,part)!=0) {
 129                 printf ("\n** Unable to use %s %d:%d for fatls **\n",argv[1],dev,part);
 130                 return 1;
 131         }
 132         if (argc == 4)
 133                 ret = file_fat_ls (argv[3]);
 134         else
 135                 ret = file_fat_ls (filename);
 136
 137         if(ret!=0)
 138                 printf("No Fat FS detected\n");
 139         return (ret);
 140 }
 141
 142 U_BOOT_CMD(
 143         fatls,  4,      1,      do_fat_ls,
 144         "fatls   - list files in a directory (default /)\n",
 145         "<interface> <dev[:part]> [directory]\n"
 146         "    - list files from 'dev' on 'interface' in a 'directory'\n"
 147 );
 148
 149 int do_fat_fsinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 150 {
 151         int dev=0;
 152         int part=1;
 153         char *ep;
 154         block_dev_desc_t *dev_desc=NULL;
 155
 156         if (argc < 2) {
 157                 printf ("usage: fatinfo <interface> <dev[:part]>\n");
 158                 return (0);
 159         }
 160         dev = (int)simple_strtoul (argv[2], &ep, 16);
 161         dev_desc=get_dev(argv[1],dev);
 162         if (dev_desc==NULL) {
 163                 puts ("\n** Invalid boot device **\n");
 164                 return 1;
 165         }
 166         if (*ep) {
 167                 if (*ep != ':') {
 168                         puts ("\n** Invalid boot device, use `dev[:part]' **\n");
 169                         return 1;
 170                 }
 171                 part = (int)simple_strtoul(++ep, NULL, 16);
 172         }
 173         if (fat_register_device(dev_desc,part)!=0) {
 174                 printf ("\n** Unable to use %s %d:%d for fatinfo **\n",argv[1],dev,part);
 175                 return 1;
 176         }
 177         return (file_fat_detectfs ());
 178 }
 179
 180 U_BOOT_CMD(
 181         fatinfo,        3,      1,      do_fat_fsinfo,
 182         "fatinfo - print information about filesystem\n",
 183         "<interface> <dev[:part]>\n"
 184         "    - print information about filesystem from 'dev' on 'interface'\n"
 185 );
 186
 187 #ifdef NOT_IMPLEMENTED_YET
 188 /* find first device whose first partition is a DOS filesystem */
 189 int find_fat_partition (void)
 190 {
 191         int i, j;
 192         block_dev_desc_t *dev_desc;
 193         unsigned char *part_table;
 194         unsigned char buffer[ATA_BLOCKSIZE];
 195
 196         for (i = 0; i < CFG_IDE_MAXDEVICE; i++) {
 197                 dev_desc = ide_get_dev (i);
 198                 if (!dev_desc) {
 199                         debug ("couldn't get ide device!\n");
 200                         return (-1);
 201                 }
 202                 if (dev_desc->part_type == PART_TYPE_DOS) {
 203                         if (dev_desc->
 204                                 block_read (dev_desc->dev, 0, 1, (ulong *) buffer) != 1) {
 205                                 debug ("can't perform block_read!\n");
 206                                 return (-1);
 207                         }
 208                         part_table = &buffer[0x1be];    /* start with partition #4 */
 209                         for (j = 0; j < 4; j++) {
 210                                 if ((part_table[4] == 1 ||      /* 12-bit FAT */
 211                                      part_table[4] == 4 ||      /* 16-bit FAT */
 212                                      part_table[4] == 6) &&     /* > 32Meg part */
 213                                     part_table[0] == 0x80) {    /* bootable? */
 214                                         curr_dev = i;
 215                                         part_offset = part_table[11];
 216                                         part_offset <<= 8;
 217                                         part_offset |= part_table[10];
 218                                         part_offset <<= 8;
 219                                         part_offset |= part_table[9];
 220                                         part_offset <<= 8;
 221                                         part_offset |= part_table[8];
 222                                         debug ("found partition start at %ld\n", part_offset);
 223                                         return (0);
 224                                 }
 225                                 part_table += 16;
 226                         }
 227                 }
 228         }
 229
 230         debug ("no valid devices found!\n");
 231         return (-1);
 232 }
 233
 234 int
 235 do_fat_dump (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
 236 {
 237         __u8 block[1024];
 238         int ret;
 239         int bknum;
 240
 241         ret = 0;
 242
 243         if (argc != 2) {
 244                 printf ("needs an argument!\n");
 245                 return (0);
 246         }
 247
 248         bknum = simple_strtoul (argv[1], NULL, 10);
 249
 250         if (disk_read (0, bknum, block) != 0) {
 251                 printf ("Error: reading block\n");
 252                 return -1;
 253         }
 254         printf ("FAT dump: %d\n", bknum);
 255         hexdump (512, block);
 256
 257         return (ret);
 258 }
 259
 260 int disk_read (__u32 startblock, __u32 getsize, __u8 *bufptr)
 261 {
 262         ulong tot;
 263         block_dev_desc_t *dev_desc;
 264
 265         if (curr_dev < 0) {
 266                 if (find_fat_partition () != 0)
 267                         return (-1);
 268         }
 269
 270         dev_desc = ide_get_dev (curr_dev);
 271         if (!dev_desc) {
 272                 debug ("couldn't get ide device\n");
 273                 return (-1);
 274         }
 275
 276         tot = dev_desc->block_read (0, startblock + part_offset,
 277                                     getsize, (ulong *) bufptr);
 278
 279         /* should we do this here?
 280            flush_cache ((ulong)buf, cnt*ide_dev_desc[device].blksz);
 281          */
 282
 283         if (tot == getsize)
 284                 return (0);
 285
 286         debug ("unable to read from device!\n");
 287
 288         return (-1);
 289 }
 290
 291
 292 static int isprint (unsigned char ch)
 293 {
 294         if (ch >= 32 && ch < 127)
 295                 return (1);
 296
 297         return (0);
 298 }
 299
 300
 301 void hexdump (int cnt, unsigned char *data)
 302 {
 303         int i;
 304         int run;
 305         int offset;
 306
 307         offset = 0;
 308         while (cnt) {
 309                 printf ("%04X : ", offset);
 310                 if (cnt >= 16)
 311                         run = 16;
 312                 else
 313                         run = cnt;
 314                 cnt -= run;
 315                 for (i = 0; i < run; i++)
 316                         printf ("%02X ", (unsigned int) data[i]);
 317                 printf (": ");
 318                 for (i = 0; i < run; i++)
 319                         printf ("%c", isprint (data[i]) ? data[i] : '.');
 320                 printf ("\n");
 321                 data = &data[16];
 322                 offset += run;
 323         }
 324 }
 325 #endif  /* NOT_IMPLEMENTED_YET */
 326
 327 #endif  /* CFG_CMD_FAT */