common/cmd_fat.c - u-boot - Git at Google

 /*
  * (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 <s_record.h>
 #include <net.h>
 #include <ata.h>
 #include <part.h>
 #include <fat.h>


 int do_fat_fsload (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 {
 	long size;
 	unsigned long offset;
 	unsigned long count;
 	char buf [12];
 	block_dev_desc_t *dev_desc=NULL;
 	int dev=0;
 	int part=1;
 	char *ep;

 	if (argc < 5) {
 		printf ("usage: fatload <interface> <dev[:part]> <addr> <filename> [bytes]\n");
 		return 1;
 	}
 	dev = (int)simple_strtoul (argv[2], &ep, 16);
 	dev_desc=get_dev(argv[1],dev);
 	if (dev_desc==NULL) {
 		puts ("\n** Invalid boot device **\n");
 		return 1;
 	}
 	if (*ep) {
 		if (*ep != ':') {
 			puts ("\n** Invalid boot device, use `dev[:part]' **\n");
 			return 1;
 		}
 		part = (int)simple_strtoul(++ep, NULL, 16);
 	}
 	if (fat_register_device(dev_desc,part)!=0) {
 		printf ("\n** Unable to use %s %d:%d for fatload **\n",argv[1],dev,part);
 		return 1;
 	}
 	offset = simple_strtoul (argv[3], NULL, 16);
 	if (argc == 6)
 		count = simple_strtoul (argv[5], NULL, 16);
 	else
 		count = 0;
 	size = file_fat_read (argv[4], (unsigned char *) offset, count);

 	if(size==-1) {
 		printf("\n** Unable to read \"%s\" from %s %d:%d **\n",argv[4],argv[1],dev,part);
 		return 1;
 	}

 	printf ("\n%ld bytes read\n", size);

 	sprintf(buf, "%lX", size);
 	setenv("filesize", buf);

 	return 0;
 }


 U_BOOT_CMD(
 	fatload,	6,	0,	do_fat_fsload,
 	"fatload - load binary file from a dos filesystem\n",
 	"<interface> <dev[:part]>  <addr> <filename> [bytes]\n"
 	"    - load binary file 'filename' from 'dev' on 'interface'\n"
 	"      to address 'addr' from dos filesystem\n"
 );

 int do_fat_ls (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 {
 	char *filename = "/";
 	int ret;
 	int dev=0;
 	int part=1;
 	char *ep;
 	block_dev_desc_t *dev_desc=NULL;

 	if (argc < 3) {
 		printf ("usage: fatls <interface> <dev[:part]> [directory]\n");
 		return (0);
 	}
 	dev = (int)simple_strtoul (argv[2], &ep, 16);
 	dev_desc=get_dev(argv[1],dev);
 	if (dev_desc==NULL) {
 		puts ("\n** Invalid boot device **\n");
 		return 1;
 	}
 	if (*ep) {
 		if (*ep != ':') {
 			puts ("\n** Invalid boot device, use `dev[:part]' **\n");
 			return 1;
 		}
 		part = (int)simple_strtoul(++ep, NULL, 16);
 	}
 	if (fat_register_device(dev_desc,part)!=0) {
 		printf ("\n** Unable to use %s %d:%d for fatls **\n",argv[1],dev,part);
 		return 1;
 	}
 	if (argc == 4)
 		ret = file_fat_ls (argv[3]);
 	else
 		ret = file_fat_ls (filename);

 	if(ret!=0)
 		printf("No Fat FS detected\n");
 	return (ret);
 }

 U_BOOT_CMD(
 	fatls,	4,	1,	do_fat_ls,
 	"fatls   - list files in a directory (default /)\n",
 	"<interface> <dev[:part]> [directory]\n"
 	"    - list files from 'dev' on 'interface' in a 'directory'\n"
 );

 int do_fat_fsinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 {
 	int dev=0;
 	int part=1;
 	char *ep;
 	block_dev_desc_t *dev_desc=NULL;

 	if (argc < 2) {
 		printf ("usage: fatinfo <interface> <dev[:part]>\n");
 		return (0);
 	}
 	dev = (int)simple_strtoul (argv[2], &ep, 16);
 	dev_desc=get_dev(argv[1],dev);
 	if (dev_desc==NULL) {
 		puts ("\n** Invalid boot device **\n");
 		return 1;
 	}
 	if (*ep) {
 		if (*ep != ':') {
 			puts ("\n** Invalid boot device, use `dev[:part]' **\n");
 			return 1;
 		}
 		part = (int)simple_strtoul(++ep, NULL, 16);
 	}
 	if (fat_register_device(dev_desc,part)!=0) {
 		printf ("\n** Unable to use %s %d:%d for fatinfo **\n",argv[1],dev,part);
 		return 1;
 	}
 	return (file_fat_detectfs ());
 }

 U_BOOT_CMD(
 	fatinfo,	3,	1,	do_fat_fsinfo,
 	"fatinfo - print information about filesystem\n",
 	"<interface> <dev[:part]>\n"
 	"    - print information about filesystem from 'dev' on 'interface'\n"
 );

 #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 */
	/*
	* (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 <s_record.h>
	#include <net.h>
	#include <ata.h>
	#include <part.h>
	#include <fat.h>


	int do_fat_fsload (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	{
	long size;
	unsigned long offset;
	unsigned long count;
	char buf [12];
	block_dev_desc_t *dev_desc=NULL;
	int dev=0;
	int part=1;
	char *ep;

	if (argc < 5) {
	printf ("usage: fatload <interface> <dev[:part]> <addr> <filename> [bytes]\n");
	return 1;
	}
	dev = (int)simple_strtoul (argv[2], &ep, 16);
	dev_desc=get_dev(argv[1],dev);
	if (dev_desc==NULL) {
	puts ("\n Invalid boot device \n");
	return 1;
	}
	if (*ep) {
	if (*ep != ':') {
	puts ("\n Invalid boot device, use `dev[:part]' \n");
	return 1;
	}
	part = (int)simple_strtoul(++ep, NULL, 16);
	}
	if (fat_register_device(dev_desc,part)!=0) {
	printf ("\n Unable to use %s %d:%d for fatload \n",argv[1],dev,part);
	return 1;
	}
	offset = simple_strtoul (argv[3], NULL, 16);
	if (argc == 6)
	count = simple_strtoul (argv[5], NULL, 16);
	else
	count = 0;
	size = file_fat_read (argv[4], (unsigned char *) offset, count);

	if(size==-1) {
	printf("\n Unable to read \"%s\" from %s %d:%d \n",argv[4],argv[1],dev,part);
	return 1;
	}

	printf ("\n%ld bytes read\n", size);

	sprintf(buf, "%lX", size);
	setenv("filesize", buf);

	return 0;
	}


	U_BOOT_CMD(
	fatload, 6, 0, do_fat_fsload,
	"fatload - load binary file from a dos filesystem\n",
	"<interface> <dev[:part]> <addr> <filename> [bytes]\n"
	" - load binary file 'filename' from 'dev' on 'interface'\n"
	" to address 'addr' from dos filesystem\n"
	);

	int do_fat_ls (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	{
	char *filename = "/";
	int ret;
	int dev=0;
	int part=1;
	char *ep;
	block_dev_desc_t *dev_desc=NULL;

	if (argc < 3) {
	printf ("usage: fatls <interface> <dev[:part]> [directory]\n");
	return (0);
	}
	dev = (int)simple_strtoul (argv[2], &ep, 16);
	dev_desc=get_dev(argv[1],dev);
	if (dev_desc==NULL) {
	puts ("\n Invalid boot device \n");
	return 1;
	}
	if (*ep) {
	if (*ep != ':') {
	puts ("\n Invalid boot device, use `dev[:part]' \n");
	return 1;
	}
	part = (int)simple_strtoul(++ep, NULL, 16);
	}
	if (fat_register_device(dev_desc,part)!=0) {
	printf ("\n Unable to use %s %d:%d for fatls \n",argv[1],dev,part);
	return 1;
	}
	if (argc == 4)
	ret = file_fat_ls (argv[3]);
	else
	ret = file_fat_ls (filename);

	if(ret!=0)
	printf("No Fat FS detected\n");
	return (ret);
	}

	U_BOOT_CMD(
	fatls, 4, 1, do_fat_ls,
	"fatls - list files in a directory (default /)\n",
	"<interface> <dev[:part]> [directory]\n"
	" - list files from 'dev' on 'interface' in a 'directory'\n"
	);

	int do_fat_fsinfo (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	{
	int dev=0;
	int part=1;
	char *ep;
	block_dev_desc_t *dev_desc=NULL;

	if (argc < 2) {
	printf ("usage: fatinfo <interface> <dev[:part]>\n");
	return (0);
	}
	dev = (int)simple_strtoul (argv[2], &ep, 16);
	dev_desc=get_dev(argv[1],dev);
	if (dev_desc==NULL) {
	puts ("\n Invalid boot device \n");
	return 1;
	}
	if (*ep) {
	if (*ep != ':') {
	puts ("\n Invalid boot device, use `dev[:part]' \n");
	return 1;
	}
	part = (int)simple_strtoul(++ep, NULL, 16);
	}
	if (fat_register_device(dev_desc,part)!=0) {
	printf ("\n Unable to use %s %d:%d for fatinfo \n",argv[1],dev,part);
	return 1;
	}
	return (file_fat_detectfs ());
	}

	U_BOOT_CMD(
	fatinfo, 3, 1, do_fat_fsinfo,
	"fatinfo - print information about filesystem\n",
	"<interface> <dev[:part]>\n"
	" - print information about filesystem from 'dev' on 'interface'\n"
	);

	#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 */