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firmware-utils/mktplinkfw: allow to align the rootfs on a specified boundary

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29445 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg 2011-12-05 14:52:31 +00:00
parent 7b716ce3ec
commit c07b709343
1 changed files with 45 additions and 14 deletions
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59
tools/firmware-utils/src/mktplinkfw.c
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@ -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;