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authorDavid Woodhouse <dwmw2@shinybook.infradead.org>2006-04-11 19:09:16 -0400
committerDavid Woodhouse <dwmw2@shinybook.infradead.org>2006-04-11 19:09:16 -0400
commit72212c137c574b564723327af751c4054c7cfca6 (patch)
tree13be2da9d4be695002d6ea9c396660c986e5fa5c /flash_unlock.c
Initial commit
Diffstat (limited to 'flash_unlock.c')
-rw-r--r--flash_unlock.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/flash_unlock.c b/flash_unlock.c
new file mode 100644
index 0000000..f4d7e20
--- /dev/null
+++ b/flash_unlock.c
@@ -0,0 +1,64 @@
+/*
+ * FILE flash_unlock.c
+ *
+ * This utility unlock all sectors of flash device.
+ *
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <time.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <string.h>
+
+#include <mtd/mtd-user.h>
+
+int main(int argc, char *argv[])
+{
+ int fd;
+ struct mtd_info_user mtdInfo;
+ struct erase_info_user mtdLockInfo;
+
+ /*
+ * Parse command line options
+ */
+ if(argc != 2)
+ {
+ fprintf(stderr, "USAGE: %s <mtd device>\n", argv[0]);
+ exit(1);
+ }
+ else if(strncmp(argv[1], "/dev/mtd", 8) != 0)
+ {
+ fprintf(stderr, "'%s' is not a MTD device. Must specify mtd device: /dev/mtd?\n", argv[1]);
+ exit(1);
+ }
+
+ fd = open(argv[1], O_RDWR);
+ if(fd < 0)
+ {
+ fprintf(stderr, "Could not open mtd device: %s\n", argv[1]);
+ exit(1);
+ }
+
+ if(ioctl(fd, MEMGETINFO, &mtdInfo))
+ {
+ fprintf(stderr, "Could not get MTD device info from %s\n", argv[1]);
+ close(fd);
+ exit(1);
+ }
+
+ mtdLockInfo.start = 0;
+ mtdLockInfo.length = mtdInfo.size;
+ if(ioctl(fd, MEMUNLOCK, &mtdLockInfo))
+ {
+ fprintf(stderr, "Could not unlock MTD device: %s\n", argv[1]);
+ close(fd);
+ exit(1);
+ }
+
+ return 0;
+}
+