From a8a133ded34d82a7baa9a439969eae780a501992 Mon Sep 17 00:00:00 2001 From: "Ronald G. Minnich" Date: Mon, 30 Dec 2013 13:16:18 -0800 Subject: Add section header parsing and use it in the mk-payload step This completes the improvements to the ELF file parsing code. We can now parse section headers too, across all 4 combinations of word size and endianness. I had hoped to completely remove the use of htonl until I found it in cbfs_image.c. That's a battle for another day. There's now a handy macro to create magic numbers in host byte order. I'm using it for all the PAYLOAD_SEGMENT_* constants and maybe we can use it for the others too, but this is sensitive code and I'd rather change one thing at a time. To maximize the ease of use for users, elf parsing is accomplished with just one function: int elf_headers(const struct buffer *pinput, Elf64_Ehdr *ehdr, Elf64_Phdr **pphdr, Elf64_Shdr **pshdr) which requires the ehdr and pphdr pointers to be non-NULL, but allows the pshdr to be NULL. If pshdr is NULL, the code will not try to read in section headers. To satisfy our powerful scripts, I had to remove the ^M from an unrelated microcode file. BUG=None TEST=Build a peppy image (known to boot) with old and new versions and verify they are bit-for-bit the same. This was also fully tested across all chromebooks for building and booting and running chromeos. BRANCH=None Change-Id: I54dad887d922428b6175fdb6a9cdfadd8a6bb889 Signed-off-by: Ronald G. Minnich Reviewed-on: https://chromium-review.googlesource.com/181272 Reviewed-by: Ronald Minnich Commit-Queue: Ronald Minnich Tested-by: Ronald Minnich Signed-off-by: Ronald G. Minnich Reviewed-on: http://review.coreboot.org/5098 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc --- util/cbfstool/Makefile.inc | 1 + 1 file changed, 1 insertion(+) (limited to 'util/cbfstool/Makefile.inc') diff --git a/util/cbfstool/Makefile.inc b/util/cbfstool/Makefile.inc index 4270d750cc..f3596fba71 100644 --- a/util/cbfstool/Makefile.inc +++ b/util/cbfstool/Makefile.inc @@ -5,6 +5,7 @@ cbfsobj += compress.o cbfsobj += cbfs_image.o cbfsobj += cbfs-mkstage.o cbfsobj += cbfs-mkpayload.o +cbfsobj += elfheaders.o cbfsobj += xdr.o cbfsobj += fit.o # LZMA -- cgit v1.2.3