mtd/util flash_otp_dump.c, NONE, 1.1 flash_otp_info.c, NONE, 1.1 Makefile, 1.54, 1.55

[Nicolas Pitre]

Update of /home/cvs/mtd/util
In directory phoenix.infradead.org:/tmp/cvs-serv22416/util

Modified Files:
	Makefile 
Added Files:
	flash_otp_dump.c flash_otp_info.c 
Log Message:
user interface to Protection Registers

This is implemented using a ioctl to switch the MTD char device into
one of the different OTP "modes", at which point read/write/seek can
operate on the selected OTP area.  Also some extra ioctls to query
for size and lock protection segments or groups.  Some example user
space utilities are provided.

Signed-off-by: Nicolas Pitre <nico at cam.org>


--- NEW FILE flash_otp_dump.c ---
/* 
 * flash_otp_dump.c -- display One-Time-Programm data
*/

#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>

#include <mtd/mtd-user.h>

int main(int argc,char *argv[])
{
	int fd, val, i, offset, ret;
	unsigned char buf[16];

	if (argc != 3 || (strcmp(argv[1], "-f") && strcmp(argv[1], "-u"))) {
		fprintf(stderr,"Usage: %s [ -f | -u ] <device>\n", argv[0]);
		return EINVAL;
	}
   
	fd = open(argv[2], O_RDONLY);
	if (fd < 0) {
		perror(argv[2]);
		return errno;
	}

	val = argv[1][1] == 'f' ? MTD_OTP_FACTORY : MTD_OTP_USER;
	ret = ioctl(fd, OTPSELECT, &val);
	if (ret < 0) {
		perror("OTPSELECT");
		return errno;
	}

	printf("OTP %s data for %s\n",
	       argv[1][1] == 'f' ? "factory" : "user", argv[2]);
	offset = 0;
	while ((ret = read(fd, buf, sizeof(buf)))) {
		if (ret < 0) {
			perror("read()");
			return errno;
		}
		printf("0x%04x:", offset);
		for (i = 0; i < ret; i++)
			printf(" %02x", buf[i]);
		printf("\n");
		offset += ret;
	}

	close(fd);
	return 0;
}

--- NEW FILE flash_otp_info.c ---
/* 
 * flash_otp_info.c -- print info about One-Time-Programm data
*/

#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>

#include <mtd/mtd-user.h>

int main(int argc,char *argv[])
{
	int fd, val, i, ret;

	if (argc != 3 || (strcmp(argv[1], "-f") && strcmp(argv[1], "-u"))) {
		fprintf(stderr,"Usage: %s [ -f | -u ] <device>\n", argv[0]);
		return EINVAL;
	}
   
	fd = open(argv[2], O_RDONLY);
	if (fd < 0) {
		perror(argv[2]);
		return errno;
	}

	val = argv[1][1] == 'f' ? MTD_OTP_FACTORY : MTD_OTP_USER;
	ret = ioctl(fd, OTPSELECT, &val);
	if (ret < 0) {
		perror("OTPSELECT");
		return errno;
	}

	ret = ioctl(fd, OTPGETREGIONCOUNT, &val);
	if (ret < 0) {
		perror("OTPGETREGIONCOUNT");
		return errno;
	}

	printf("Number of OTP %s blocks on %s: %d\n",
	       argv[1][1] == 'f' ? "factory" : "user", argv[2], val);

	if (val > 0) {
		struct otp_info info[val];

		ret = ioctl(fd, OTPGETREGIONINFO, &info);
	       if (ret	< 0) {
			perror("OTPGETREGIONCOUNT");
			return errno;
		}

		for (i = 0; i < val; i++)
			printf("block %2d:  offset = 0x%04x  "
			       "size = %2d bytes  %s\n",
			       i, info[i].start, info[i].length,
			       info[i].locked ? "[locked]" : "[unlocked]");
	}

	close(fd);
	return 0;
}

Index: Makefile
===================================================================
RCS file: /home/cvs/mtd/util/Makefile,v
retrieving revision 1.54
retrieving revision 1.55
diff -u -r1.54 -r1.55
--- Makefile	21 Jan 2005 11:52:22 -0000	1.54
+++ Makefile	8 Feb 2005 17:45:52 -0000	1.55
@@ -11,8 +11,9 @@
 CFLAGS := -I../include -O2 -Wall
 
 TARGETS = ftl_format flash_erase flash_eraseall nanddump doc_loadbios \
-	mkfs.jffs ftl_check mkfs.jffs2 flash_lock flash_unlock \
-	flash_info mtd_debug flashcp nandwrite jffs2dump jffs3dump \
+	mkfs.jffs ftl_check mkfs.jffs2 flash_lock flash_unlock flash_info \
+	flash_otp_info flash_otp_dump mtd_debug flashcp nandwrite \
+	jffs2dump jffs3dump \
 	nftldump nftl_format docfdisk \
 	sumtool #jffs2reader