X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs%2F.git;a=blobdiff_plain;f=utils%2Fmkyaffs.c;fp=utils%2Fmkyaffs.c;h=fdcf4517f29453636a77de140dea978d4b4e74e2;hp=a0107bad89e917f8f98c6adc6aac6036d8447096;hb=37122d7644239983d55096a85bca6fb8e248cf20;hpb=d48b3f2cc376fdf9201ae430baba8532c01b05b1

diff --git a/utils/mkyaffs.c b/utils/mkyaffs.c
index a0107ba..fdcf451 100644
--- a/utils/mkyaffs.c
+++ b/utils/mkyaffs.c
@@ -34,7 +34,7 @@
 #include <linux/config.h>
 #include <linux/mtd/mtd.h>
 
-const char *mkyaffs_c_version = "$Id: mkyaffs.c,v 1.6 2003-03-11 05:16:53 charles Exp $";
+const char *mkyaffs_c_version = "$Id: mkyaffs.c,v 1.7 2003-03-12 19:32:41 charles Exp $";
 
 // countBits is a quick way of counting the number of bits in a byte.
 // ie. countBits[n] holds the number of 1 bits in a byte with the value n.
@@ -92,19 +92,34 @@ int main(int argc, char **argv)
 	int optcnt = 1;
 	int usemtdecc = 0;
 	int imglen = 0;
+	int showHelp = 0;
 	struct mtd_oob_buf oob = {0, 16, (unsigned char *) &oobbuf};
 	mtd_info_t meminfo;
 	erase_info_t erase;
 	struct nand_oobinfo oobsel;
 
-	if (strcmp (argv[optcnt], "-e") == 0) {
+	if (argc > 1 && strcmp (argv[optcnt], "-?") == 0) {
+		showHelp = 1;
+	}
+
+	if (argc > 1 && strcmp (argv[optcnt], "-h") == 0) {
+		showHelp = 1;
+	}
+	
+	if (argc > 1 && strcmp (argv[optcnt], "-e") == 0) {
 		optcnt++;
 		usemtdecc = 1;
 	}
 	
 	/* Make sure a device was specified */
-	if(argc < (optcnt + 2)) {
-		printf("usage: %s -e <mtdname> <image name>\n", argv[0]);
+	if(showHelp || argc < (optcnt + 2)) {
+		printf("usage: %s [-e] <mtdname> [image name]\n", argv[0]);
+		printf("  -e         Use mtd ecc. Default: do not use mtd ecc\n");
+		printf("  mtdname    Name of mtd device\n");
+		printf("  image name Name of optional image file\n\n");
+		printf("Function: Formats a NAND mtd device for YAFFS. If the optional\n"
+		       "image file is specified, then the file system is loaded with\n"
+		       "this image.\n\n");
 		exit(1);
 	}