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path: root/util/cbfstool/fit.c
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2014-12-28cbfstool: Fix update-fit commandKyösti Mälkki
Regression in commit 3fcde22 caused parse_microcode_blob() to access data outside cpu_microcode_blob.bin file in CBFS and create invalid Intel Firmware Interface Table entries. Change-Id: I1a687060084c2acd6cac5f5053b74a332b4ac714 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/7958 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-03-13cbfstool: add eflparsing.hAaron Durbin
elfparsing.h serves as the header to working with the elf parser. Additionally, only include what is needed by the other files. Many had no reason to be including elf.h aside from fixing compilation problems when including cbfs.h. Change-Id: I9eb5f09f3122aa18beeca52d2e4dc2102d70fb9d Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/5370 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2014-02-05Add an xdr function for the cbfs_file headerRonald G. Minnich
And use it in fit.c and remove one more use of htonl. Change-Id: Ibf18dcc0a7f08d75c2374115de0db7a4bf64ec1e Signed-off-by: Ronald G. Minnich <rminnich@google.com> Reviewed-on: http://review.coreboot.org/5120 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-02-02Add section header parsing and use it in the mk-payload stepRonald G. Minnich
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 <rminnich@google.com> Reviewed-on: https://chromium-review.googlesource.com/181272 Reviewed-by: Ronald Minnich <rminnich@chromium.org> Commit-Queue: Ronald Minnich <rminnich@chromium.org> Tested-by: Ronald Minnich <rminnich@chromium.org> Signed-off-by: Ronald G. Minnich <rminnich@google.com> Reviewed-on: http://review.coreboot.org/5098 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-01-29cbfs: fix issues with word size and endianness.Ronald G. Minnich
Add XDR functions and use them to convert the ELF headers to native headers, using the Elf64 structs to ensure we accomodate all word sizes. Also, use these XDR functions for output. This may seem overly complex but it turned out to be much the easiest way to do this. Note that the basic elf parsing function in cbfs-mkstage.c now works over all ELF files, for all architectures, endian, and word size combinations. At the same time, the basic elf parsing in cbfs-mkstage.c is a loop that has no architecture-specific conditionals. Add -g to the LDFLAGS while we're here. It's on the CFLAGS so there is no harm done. This code has been tested on all chromebooks that use coreboot to date. I added most of the extra checks from ChromeOS and they triggered a lot of warnings, hence the other changes. I had to take -Wshadow back out due to the many errors it triggers in LZMA. BUG=None TEST=Build and boot for Peppy; works fine. Build and boot for nyan, works fine. Build for qemu targets and armv8 targets. BRANCH=None Change-Id: I5a4cee9854799189115ac701e22efc406a8d902f Signed-off-by: Ronald G. Minnich <rminnich@google.com> Reviewed-on: https://chromium-review.googlesource.com/178606 Reviewed-by: Ronald Minnich <rminnich@chromium.org> Commit-Queue: Ronald Minnich <rminnich@chromium.org> Tested-by: Ronald Minnich <rminnich@chromium.org> Reviewed-on: http://review.coreboot.org/4817 Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-12-09cbfstool: Properly handle EOF in update_fit stepAlexandru Gagniuc
During the update_fit step, 'file_length' is used to determine how many bytes are left in the CBFS file. It was decremented in a loop from an array 'mcus[num_mcus].size', but 'num_mcus' was incremented right before. Since 'mcus' is memset(0) externally, 'file_length' was never decremented. The loop exited when it reached a dummy terminator, usually 48 bytes of 0 which are internationally added to microcode blobs in coreboot. However, if that terminator is removed, the loop doesn't stop and continues until it segfaults. Change-Id: I840727add69379ffef75b694d90402ed89769e3b Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-on: http://review.coreboot.org/4508 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
2013-11-25cbfstool: check potential microcode update earlierAaron Durbin
The update-fit command takes in a parameter for number of slots in the FIT table. It then processes the microcobe blob in cbfs adding those entries to the FIT table. However, the tracking of the number of mircocode updates was incremented before validating the update. Therefore, move the sanity checking before an increment of the number of updates. Change-Id: Ie8290f53316b251e500b88829fdcf9b5735c1b0e Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/50319 Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: http://review.coreboot.org/4161 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-03-27cbfstool: Add update-fit commandAaron Durbin
Add support for filling in the Firmware Interface Table. For now it only supports adding microcode entries. It takes 2 options: 1. Name of file in cbfs where the mircocode is located 2. The number of empty entries in the table. Verified with go firmware tools. Also commented out updating microcode in the bootblock. When romstage runs, the CPUs indicate their microcode is already loaded. Change-Id: Iaccaa9c226ee24868a5f4c0ba79729015d15bbef Signed-off-by: Aaron Durbin <adurbin@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2712 Reviewed-by: Aaron Durbin <adurbin@google.com> Tested-by: build bot (Jenkins)