]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_fat.c
3 * Richard Jones, rjones@nexus-tech.net
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
30 #include <cmd_autoscript.h>
35 #if (CONFIG_COMMANDS & CFG_CMD_FAT)
41 extern block_dev_desc_t
*ide_get_dev (int dev
);
43 int do_fat_fsload (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
50 printf ("usage:fatload <filename> <addr> [bytes]\n");
54 offset
= simple_strtoul (argv
[2], NULL
, 16);
56 count
= simple_strtoul (argv
[3], NULL
, 16);
60 size
= file_fat_read (argv
[1], (unsigned char *) offset
, count
);
62 printf ("%ld bytes read\n", size
);
67 int do_fat_ls (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
73 ret
= file_fat_ls (argv
[1]);
75 ret
= file_fat_ls (filename
);
80 int do_fat_fsinfo (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
86 printf ("FAT info: %d\n", file_fat_detectfs ());
91 #ifdef NOT_IMPLEMENTED_YET
92 /* find first device whose first partition is a DOS filesystem */
93 int find_fat_partition (void)
96 block_dev_desc_t
*dev_desc
;
97 unsigned char *part_table
;
98 unsigned char buffer
[ATA_BLOCKSIZE
];
100 for (i
= 0; i
< CFG_IDE_MAXDEVICE
; i
++) {
101 dev_desc
= ide_get_dev (i
);
103 debug ("couldn't get ide device!\n");
106 if (dev_desc
->part_type
== PART_TYPE_DOS
) {
108 block_read (dev_desc
->dev
, 0, 1, (ulong
*) buffer
) != 1) {
109 debug ("can't perform block_read!\n");
112 part_table
= &buffer
[0x1be]; /* start with partition #4 */
113 for (j
= 0; j
< 4; j
++) {
114 if ((part_table
[4] == 1 || /* 12-bit FAT */
115 part_table
[4] == 4 || /* 16-bit FAT */
116 part_table
[4] == 6) && /* > 32Meg part */
117 part_table
[0] == 0x80) { /* bootable? */
119 part_offset
= part_table
[11];
121 part_offset
|= part_table
[10];
123 part_offset
|= part_table
[9];
125 part_offset
|= part_table
[8];
126 debug ("found partition start at %ld\n", part_offset
);
134 debug ("no valid devices found!\n");
139 do_fat_dump (cmd_tbl_t
*cmdtp
, bd_t
*bd
, int flag
, int argc
, char *argv
[])
148 printf ("needs an argument!\n");
152 bknum
= simple_strtoul (argv
[1], NULL
, 10);
154 if (disk_read (0, bknum
, block
) != 0) {
155 printf ("Error: reading block\n");
158 printf ("FAT dump: %d\n", bknum
);
159 hexdump (512, block
);
164 int disk_read (__u32 startblock
, __u32 getsize
, __u8
*bufptr
)
167 block_dev_desc_t
*dev_desc
;
170 if (find_fat_partition () != 0)
174 dev_desc
= ide_get_dev (curr_dev
);
176 debug ("couldn't get ide device\n");
180 tot
= dev_desc
->block_read (0, startblock
+ part_offset
,
181 getsize
, (ulong
*) bufptr
);
183 /* should we do this here?
184 flush_cache ((ulong)buf, cnt*ide_dev_desc[device].blksz);
190 debug ("unable to read from device!\n");
196 static int isprint (unsigned char ch
)
198 if (ch
>= 32 && ch
< 127)
205 void hexdump (int cnt
, unsigned char *data
)
213 printf ("%04X : ", offset
);
219 for (i
= 0; i
< run
; i
++)
220 printf ("%02X ", (unsigned int) data
[i
]);
222 for (i
= 0; i
< run
; i
++)
223 printf ("%c", isprint (data
[i
]) ? data
[i
] : '.');
229 #endif /* NOT_IMPLEMENTED_YET */
231 #endif /* CFG_CMD_FAT */