From ccf2049b105bb6051b6104fd1ed9d21d352a8b10 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Mon, 5 Dec 2011 14:52:31 +0000
Subject: firmware-utils/mktplinkfw: allow to align the rootfs on a specified
boundary
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29445 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
tools/firmware-utils/src/mktplinkfw.c | 59 ++++++++++++++++++++++++++---------
1 file changed, 45 insertions(+), 14 deletions(-)
(limited to 'tools')
diff --git a/tools/firmware-utils/src/mktplinkfw.c b/tools/firmware-utils/src/mktplinkfw.c
index a1669cee5a..0f1e20f142 100644
--- a/tools/firmware-utils/src/mktplinkfw.c
+++ b/tools/firmware-utils/src/mktplinkfw.c
@@ -27,6 +27,8 @@
#include "md5.h"
+#define ALIGN(x,a) ({ typeof(a) __a = (a); (((x) + __a - 1) & ~(__a - 1)); })
+
#define HEADER_VERSION_V1 0x01000000
#define HWID_TL_MR3220_V1 0x32200001
#define HWID_TL_MR3420_V1 0x34200001
@@ -99,8 +101,10 @@ static struct board_info *board;
static struct file_info kernel_info;
static uint32_t kernel_la = 0;
static uint32_t kernel_ep = 0;
+static uint32_t kernel_len = 0;
static struct file_info rootfs_info;
static uint32_t rootfs_ofs = 0;
+static uint32_t rootfs_align;
static struct file_info boot_info;
static int combined;
static int strip_padding;
@@ -324,6 +328,7 @@ static void usage(int status)
" -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
" -k <file> read kernel image from the file <file>\n"
" -r <file> read rootfs image from the file <file>\n"
+" -a <align> align the rootfs start on an <align> bytes boundary\n"
" -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
" -o <file> write output to the file <file>\n"
" -s strip padding from the end of the image\n"
@@ -431,6 +436,8 @@ static int check_options(void)
if (ret)
return ret;
+ kernel_len = kernel_info.file_size;
+
if (combined) {
if (kernel_info.file_size >
board->fw_max_len - sizeof(struct fw_header)) {
@@ -438,11 +445,6 @@ static int check_options(void)
return -1;
}
} else {
- if (kernel_info.file_size >
- rootfs_ofs - sizeof(struct fw_header)) {
- ERR("kernel image is too big");
- return -1;
- }
if (rootfs_info.file_name == NULL) {
ERR("no rootfs image specified");
return -1;
@@ -452,10 +454,30 @@ static int check_options(void)
if (ret)
return ret;
- if (rootfs_info.file_size >
- (board->fw_max_len - rootfs_ofs)) {
- ERR("rootfs image is too big");
- return -1;
+ if (rootfs_align) {
+ kernel_len += sizeof(struct fw_header);
+ kernel_len = ALIGN(kernel_len, rootfs_align);
+ kernel_len -= sizeof(struct fw_header);
+
+ DBG("kernel length aligned to %u", kernel_len);
+
+ if (kernel_len + rootfs_info.file_size >
+ board->fw_max_len - sizeof(struct fw_header)) {
+ ERR("images are too big");
+ return -1;
+ }
+ } else {
+ if (kernel_info.file_size >
+ rootfs_ofs - sizeof(struct fw_header)) {
+ ERR("kernel image is too big");
+ return -1;
+ }
+
+ if (rootfs_info.file_size >
+ (board->fw_max_len - rootfs_ofs)) {
+ ERR("rootfs image is too big");
+ return -1;
+ }
}
}
@@ -488,7 +510,7 @@ static void fill_header(char *buf, int len)
hdr->kernel_ep = htonl(kernel_ep);
hdr->fw_length = htonl(board->fw_max_len);
hdr->kernel_ofs = htonl(sizeof(struct fw_header));
- hdr->kernel_len = htonl(kernel_info.file_size);
+ hdr->kernel_len = htonl(kernel_len);
if (!combined) {
hdr->rootfs_ofs = htonl(rootfs_ofs);
hdr->rootfs_len = htonl(rootfs_info.file_size);
@@ -551,15 +573,21 @@ static int build_fw(void)
if (ret)
goto out_free_buf;
- writelen = sizeof(struct fw_header) + kernel_info.file_size;
+ writelen = sizeof(struct fw_header) + kernel_len;
if (!combined) {
- p = buf + rootfs_ofs;
+ if (rootfs_align)
+ p = buf + writelen;
+ else
+ p = buf + rootfs_ofs;
ret = read_to_buf(&rootfs_info, p);
if (ret)
goto out_free_buf;
- writelen = rootfs_ofs + rootfs_info.file_size;
+ if (rootfs_align)
+ writelen += rootfs_info.file_size;
+ else
+ writelen = rootfs_ofs + rootfs_info.file_size;
}
if (!strip_padding)
@@ -800,11 +828,14 @@ int main(int argc, char *argv[])
while ( 1 ) {
int c;
- c = getopt(argc, argv, "B:E:L:V:N:ci:k:r:R:o:xhs");
+ c = getopt(argc, argv, "a:B:E:L:V:N:ci:k:r:R:o:xhs");
if (c == -1)
break;
switch (c) {
+ case 'a':
+ sscanf(optarg, "0x%x", &rootfs_align);
+ break;
case 'B':
board_id = optarg;
break;
--
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