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/*
* (C) Copyright 2002
* Richard Jones, rjones@nexus-tech.net
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* Boot support
*/
#include <common.h>
#include <command.h>
#include <cmd_boot.h>
#include <cmd_autoscript.h>
#include <s_record.h>
#include <net.h>
#include <ata.h>
#if (CONFIG_COMMANDS & CFG_CMD_FAT)
#undef DEBUG
#include <fat.h>
extern block_dev_desc_t *ide_get_dev (int dev);
int do_fat_fsload (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
long size;
unsigned long offset;
unsigned long count;
if (argc < 3) {
printf ("usage:fatload <filename> <addr> [bytes]\n");
return (0);
}
offset = simple_strtoul (argv[2], NULL, 16);
if (argc == 4)
count = simple_strtoul (argv[3], NULL, 16);
else
count = 0;
size = file_fat_read (argv[1], (unsigned char *) offset, count);
printf ("%ld bytes read\n", size);
return size;
}
int do_fat_ls (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
char *filename = "/";
int ret;
if (argc == 2)
ret = file_fat_ls (argv[1]);
else
ret = file_fat_ls (filename);
return (ret);
}
int do_fat_fsinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
int ret;
ret = 0;
printf ("FAT info: %d\n", file_fat_detectfs ());
return (ret);
}
#ifdef NOT_IMPLEMENTED_YET
/* find first device whose first partition is a DOS filesystem */
int find_fat_partition (void)
{
int i, j;
block_dev_desc_t *dev_desc;
unsigned char *part_table;
unsigned char buffer[ATA_BLOCKSIZE];
for (i = 0; i < CFG_IDE_MAXDEVICE; i++) {
dev_desc = ide_get_dev (i);
if (!dev_desc) {
debug ("couldn't get ide device!\n");
return (-1);
}
if (dev_desc->part_type == PART_TYPE_DOS) {
if (dev_desc->
block_read (dev_desc->dev, 0, 1, (ulong *) buffer) != 1) {
debug ("can't perform block_read!\n");
return (-1);
}
part_table = &buffer[0x1be]; /* start with partition #4 */
for (j = 0; j < 4; j++) {
if ((part_table[4] == 1 || /* 12-bit FAT */
part_table[4] == 4 || /* 16-bit FAT */
part_table[4] == 6) && /* > 32Meg part */
part_table[0] == 0x80) { /* bootable? */
curr_dev = i;
part_offset = part_table[11];
part_offset <<= 8;
part_offset |= part_table[10];
part_offset <<= 8;
part_offset |= part_table[9];
part_offset <<= 8;
part_offset |= part_table[8];
debug ("found partition start at %ld\n", part_offset);
return (0);
}
part_table += 16;
}
}
}
debug ("no valid devices found!\n");
return (-1);
}
int
do_fat_dump (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
{
__u8 block[1024];
int ret;
int bknum;
ret = 0;
if (argc != 2) {
printf ("needs an argument!\n");
return (0);
}
bknum = simple_strtoul (argv[1], NULL, 10);
if (disk_read (0, bknum, block) != 0) {
printf ("Error: reading block\n");
return -1;
}
printf ("FAT dump: %d\n", bknum);
hexdump (512, block);
return (ret);
}
int disk_read (__u32 startblock, __u32 getsize, __u8 *bufptr)
{
ulong tot;
block_dev_desc_t *dev_desc;
if (curr_dev < 0) {
if (find_fat_partition () != 0)
return (-1);
}
dev_desc = ide_get_dev (curr_dev);
if (!dev_desc) {
debug ("couldn't get ide device\n");
return (-1);
}
tot = dev_desc->block_read (0, startblock + part_offset,
getsize, (ulong *) bufptr);
/* should we do this here?
flush_cache ((ulong)buf, cnt*ide_dev_desc[device].blksz);
*/
if (tot == getsize)
return (0);
debug ("unable to read from device!\n");
return (-1);
}
static int isprint (unsigned char ch)
{
if (ch >= 32 && ch < 127)
return (1);
return (0);
}
void hexdump (int cnt, unsigned char *data)
{
int i;
int run;
int offset;
offset = 0;
while (cnt) {
printf ("%04X : ", offset);
if (cnt >= 16)
run = 16;
else
run = cnt;
cnt -= run;
for (i = 0; i < run; i++)
printf ("%02X ", (unsigned int) data[i]);
printf (": ");
for (i = 0; i < run; i++)
printf ("%c", isprint (data[i]) ? data[i] : '.');
printf ("\n");
data = &data[16];
offset += run;
}
}
#endif /* NOT_IMPLEMENTED_YET */
#endif /* CFG_CMD_FAT */
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