X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=tools%2Fmkenvimage.c;h=bbd3041e36f4e5a2ac909fbe101ecfdd91b6345b;hb=60b295672d61fe79e6af3d9e4f3e8bd23bf3b4ad;hp=032dc836526b36179e0980f60ce4a3cf9ac93968;hpb=48995b5a96c99ba6243906ecab733e4269fbafe5;p=u-boot

diff --git a/tools/mkenvimage.c b/tools/mkenvimage.c
index 032dc83652..bbd3041e36 100644
--- a/tools/mkenvimage.c
+++ b/tools/mkenvimage.c
@@ -6,28 +6,9 @@
  * (C) Copyright 2001
  * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
  *
- * 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
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
-/* We want the GNU version of basename() */
-#define _GNU_SOURCE
-
 #include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
@@ -35,8 +16,10 @@
 #include <stdint.h>
 #include <string.h>
 #include <unistd.h>
+#include <libgen.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/mman.h>
 
 #include "compiler.h"
 #include <u-boot/crc.h>
@@ -208,12 +191,24 @@ int main(int argc, char **argv)
 		}
 
 		filesize = txt_file_stat.st_size;
-		/* Read the raw input file and transform it */
-		filebuf = malloc(sizeof(*envptr) * filesize);
-		ret = read(txt_fd, filebuf, sizeof(*envptr) * filesize);
-		if (ret != sizeof(*envptr) * filesize) {
-			fprintf(stderr, "Can't read the whole input file\n");
-			return EXIT_FAILURE;
+
+		filebuf = mmap(NULL, sizeof(*envptr) * filesize, PROT_READ,
+			       MAP_PRIVATE, txt_fd, 0);
+		if (filebuf == MAP_FAILED) {
+			fprintf(stderr, "mmap (%zu bytes) failed: %s\n",
+					sizeof(*envptr) * filesize,
+					strerror(errno));
+			fprintf(stderr, "Falling back to read()\n");
+
+			filebuf = malloc(sizeof(*envptr) * filesize);
+			ret = read(txt_fd, filebuf, sizeof(*envptr) * filesize);
+			if (ret != sizeof(*envptr) * filesize) {
+				fprintf(stderr, "Can't read the whole input file (%zu bytes): %s\n",
+					sizeof(*envptr) * filesize,
+					strerror(errno));
+
+				return EXIT_FAILURE;
+			}
 		}
 		ret = close(txt_fd);
 	}
@@ -245,14 +240,6 @@ int main(int argc, char **argv)
 				/* End of a variable */
 				envptr[ep++] = '\0';
 			}
-		} else if (filebuf[fp] == '#') {
-			if (fp != 0 && filebuf[fp-1] == '\n') {
-				/* This line is a comment, let's skip it */
-				while (fp < txt_file_stat.st_size && fp++ &&
-				       filebuf[fp] != '\n');
-			} else {
-				envptr[ep++] = filebuf[fp];
-			}
 		} else {
 			envptr[ep++] = filebuf[fp];
 		}
@@ -280,7 +267,9 @@ int main(int argc, char **argv)
 	crc = crc32(0, envptr, envsize);
 	targetendian_crc = bigendian ? cpu_to_be32(crc) : cpu_to_le32(crc);
 
-	memcpy(dataptr, &targetendian_crc, sizeof(uint32_t));
+	memcpy(dataptr, &targetendian_crc, sizeof(targetendian_crc));
+	if (redundant)
+		dataptr[sizeof(targetendian_crc)] = 1;
 
 	if (!bin_filename || strcmp(bin_filename, "-") == 0) {
 		bin_fd = STDOUT_FILENO;