From b3cb0e75884222e141a40443c25d20deedf7a552 Mon Sep 17 00:00:00 2001 From: Piotr Dymacz Date: Thu, 6 Jul 2017 16:34:47 +0200 Subject: firmware-utils: mktplinkfw: rework combined image option We use combined option in "mktplinkfw" tool for generating initramfs kernel images and header for kernel inside "safeloader" image type (in fact, only for TL-WR1043ND v4 at this moment). There is also "mktplinkfw-kernel" tool, a stripped-down version, used only for generating "simple" header, for safeloader image types. This changes how "mktplinkfw" handles combined images (which then will allow us to drop the stripped-down version of the tool): - drop "ignore size" command line option (it was used only for combined images anyway) - don't require "flash layout id" for combined images (we don't need and shouldn't limit size of the initramfs kernel and for kernels inside safeloader images, the "tplink-safeloader" tool does the size check) - require kernel address and entry point in command line parameters for combined images (consequence of previous point) - don't include md5 sum and firmware length values in header (they are needed only for update from vendor GUI and are ingored in case of initramfs and "tplink-safeloader" images) - drop "fake" flash layout for TL-WR1043ND v4 as it's no longer needed Also, adjust "mktplinkfw-combined" command in ar71xx/image/tp-link.mk to match introduced changes in "mktplinkfw" tool. Signed-off-by: Piotr Dymacz --- tools/firmware-utils/src/mktplinkfw.c | 99 +++++++++++++++-------------------- 1 file changed, 41 insertions(+), 58 deletions(-) (limited to 'tools') diff --git a/tools/firmware-utils/src/mktplinkfw.c b/tools/firmware-utils/src/mktplinkfw.c index 93db441357..c537862050 100644 --- a/tools/firmware-utils/src/mktplinkfw.c +++ b/tools/firmware-utils/src/mktplinkfw.c @@ -117,7 +117,6 @@ static uint32_t rootfs_align; static struct file_info boot_info; static int combined; static int strip_padding; -static int ignore_size; static int add_jffs2_eof; static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde}; static uint32_t fw_max_len; @@ -180,20 +179,6 @@ static struct flash_layout layouts[] = { .kernel_la = 0x00000000 , .kernel_ep = 0xc0000000, .rootfs_ofs = 0x2a0000, - }, { - /* - Some devices (e.g. TL-WR1043 v4) use a mktplinkfw kernel image - embedded in a tplink-safeloader image as os-image partition. - - We use a 1.5MB partition for the compressed kernel, which should - be sufficient, but not too wasteful (the flash of the TL-WR1043 v4 - has 16MB in total). - */ - .id = "16Msafeloader", - .fw_max_len = 0x180000, - .kernel_la = 0x80060000, - .kernel_ep = 0x80060000, - .rootfs_ofs = 0, }, { /* terminating entry */ } @@ -272,7 +257,6 @@ static void usage(int status) " -R overwrite rootfs offset with (hexval prefixed with 0x)\n" " -o write output to the file \n" " -s strip padding from the end of the image\n" -" -S ignore firmware size limit (only for combined images)\n" " -j add jffs2 end-of-filesystem markers\n" " -N set image vendor to \n" " -V set image version to \n" @@ -362,7 +346,7 @@ static int check_options(void) } hw_id = strtoul(opt_hw_id, NULL, 0); - if (layout_id == NULL) { + if (!combined && layout_id == NULL) { ERR("flash layout is not specified"); return -1; } @@ -380,26 +364,31 @@ static int check_options(void) } } - layout = find_layout(layout_id); - if (layout == NULL) { - ERR("unknown flash layout \"%s\"", layout_id); - return -1; - } + if (combined) { + if (!kernel_la || !kernel_ep) { + ERR("kernel loading address and entry point must be specified for combined image"); + return -1; + } + } else { + layout = find_layout(layout_id); + if (layout == NULL) { + ERR("unknown flash layout \"%s\"", layout_id); + return -1; + } - if (!kernel_la) - kernel_la = layout->kernel_la; - if (!kernel_ep) - kernel_ep = layout->kernel_ep; - if (!rootfs_ofs) - rootfs_ofs = layout->rootfs_ofs; + if (!kernel_la) + kernel_la = layout->kernel_la; + if (!kernel_ep) + kernel_ep = layout->kernel_ep; + if (!rootfs_ofs) + rootfs_ofs = layout->rootfs_ofs; - if (reserved_space > layout->fw_max_len) { - ERR("reserved space is not valid"); - return -1; + if (reserved_space > layout->fw_max_len) { + ERR("reserved space is not valid"); + return -1; + } } - fw_max_len = layout->fw_max_len - reserved_space; - if (kernel_info.file_name == NULL) { ERR("no kernel image specified"); return -1; @@ -411,18 +400,9 @@ static int check_options(void) kernel_len = kernel_info.file_size; - if (combined) { - exceed_bytes = kernel_info.file_size - (fw_max_len - sizeof(struct fw_header)); - if (exceed_bytes > 0) { - if (!ignore_size) { - ERR("kernel image is too big by %i bytes", exceed_bytes); - return -1; - } - layout->fw_max_len = sizeof(struct fw_header) + - kernel_info.file_size + - reserved_space; - } - } else { + if (!combined) { + fw_max_len = layout->fw_max_len - reserved_space; + if (rootfs_info.file_name == NULL) { ERR("no rootfs image specified"); return -1; @@ -494,17 +474,18 @@ static void fill_header(char *buf, int len) hdr->hw_id = htonl(hw_id); hdr->hw_rev = htonl(hw_rev); - if (boot_info.file_size == 0) - memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1)); - else - memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1)); - hdr->kernel_la = htonl(kernel_la); hdr->kernel_ep = htonl(kernel_ep); - hdr->fw_length = htonl(layout->fw_max_len); hdr->kernel_ofs = htonl(sizeof(struct fw_header)); hdr->kernel_len = htonl(kernel_len); + if (!combined) { + if (boot_info.file_size == 0) + memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1)); + else + memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1)); + + hdr->fw_length = htonl(layout->fw_max_len); hdr->rootfs_ofs = htonl(rootfs_ofs); hdr->rootfs_len = htonl(rootfs_info.file_size); } @@ -530,7 +511,8 @@ static void fill_header(char *buf, int len) hdr->kernel_ep = bswap_32(hdr->kernel_ep); } - get_md5(buf, len, hdr->md5sum1); + if (!combined) + get_md5(buf, len, hdr->md5sum1); } static int pad_jffs2(char *buf, int currlen) @@ -607,7 +589,12 @@ static int build_fw(void) int ret = EXIT_FAILURE; int writelen = 0; - buflen = layout->fw_max_len; + writelen = sizeof(struct fw_header) + kernel_len; + + if (combined) + buflen = writelen; + else + buflen = layout->fw_max_len; buf = malloc(buflen); if (!buf) { @@ -621,7 +608,6 @@ static int build_fw(void) if (ret) goto out_free_buf; - writelen = sizeof(struct fw_header) + kernel_len; if (!combined) { if (rootfs_align) @@ -814,7 +800,7 @@ int main(int argc, char *argv[]) while ( 1 ) { int c; - c = getopt(argc, argv, "a:H:E:F:L:m:V:N:W:C:ci:k:r:R:o:xX:ehsSjv:"); + c = getopt(argc, argv, "a:H:E:F:L:m:V:N:W:C:ci:k:r:R:o:xX:ehsjv:"); if (c == -1) break; @@ -870,9 +856,6 @@ int main(int argc, char *argv[]) case 's': strip_padding = 1; break; - case 'S': - ignore_size = 1; - break; case 'i': inspect_info.file_name = optarg; break; -- cgit v1.2.3