To quote its repo[0]: Wuffs is a memory-safe programming language (and
a standard library written in that language) for Wrangling Untrusted
File Formats Safely. Wrangling includes parsing, decoding and encoding.
It compiles its library, written in its own language, to a C/C++ source
file that can then be used independently without needing support for
the language. That library is now imported to src/vendorcode/wuffs/.
This change modifies our linters to ignore that directory because
it's supposed to contain the wuffs compiler's result verbatim.
Nigel Tao provided an initial wrapper around wuffs' jpeg decoder
that implements our JPEG API. I further changed it a bit regarding
data placement, dropped stuff from our API that wasn't ever used,
or isn't used anymore, and generally made it fit coreboot a bit
better. Features are Nigel's, bugs are mine.
This commit also adapts our jpeg fuzz test to work with the modified
API. After limiting it to deal only with approximately screen sized
inputs, it fuzzed for 25 hours CPU time without a single hang or
crash. This is a notable improvement over running the test with our
old decoder which crashes within a minute.
Finally, I tried the new parser with a pretty-much-random JPEG file
I got from the internet, and it just showed it (once the resolution
matched), which is also a notable improvement over the old decoder
which is very particular about the subset of JPEG it supports.
In terms of code size, a QEmu build's ramstage increases
from 128060 bytes decompressed (64121 bytes after LZMA)
to 172304 bytes decompressed (82734 bytes after LZMA).
[0] https://github.com/google/wuffs
Change-Id: If8fa7da69da1ad412f27c2c5e882393c7739bc82
Signed-off-by: Patrick Georgi <patrick@coreboot.org>
Based-on-work-by: Nigel Tao <nigeltao@golang.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78271
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
abuild - coreboot autobuild script builds coreboot images for all
available targets. bash
acpi - Walk through all ACPI tables with their addresses. bash
amdfwtool - Create AMD Firmware combination C
amdtools Various tools for AMD processors
update_efs_spi_speed - Change SPI speed in binary. Bash
Tools to compare extended K8 memory settings.
k8-compare-pci-space.pl - Shows differences between values
in PCI space and the default value. Perl
k8-interpret-extended-memory-settings.pl - Shows
differences between memory controller values and the default value.
Perl
k8-read-mem-settings.sh - Makes data files understood by
the k8-interpret-extended-memory-settings script. Bash
parse-bkdg.pl - Make bkdg.data file used by above scripts.
Perl
example_input - Sample input for the above scripts. Text
apcb - AMD PSP Control Block tools
apcb_edit.py - This tool allows patching an existing APCB
binary with specific SPDs and GPIO selection pins. Python3
apcb_v3_edit.py - This tool allows patching an existing
APCB v3 binary with up to 16 specific SPDs. Python3
archive - Concatenate files and create an archive C
autoport - Automated porting coreboot to Sandy Bridge/Ivy Bridge
platforms Go
bincfg - Compiler/Decompiler for data blobs with specs LexYacc
board_status - Tools to collect logs and upload them to the board
status repository BashGo
bucts - A tool to manipulate the BUC.TS bit on Intel targets. C
cavium - Devicetree_convert Tool to convert a DTB to a static C
file Python
cbfstool
cbfstool - For manipulating CBFS file C
fmaptool - Converts plaintext fmd files into fmap blobs C
rmodtool - Creates rmodules C
ifwitool - For manipulating IFWI C
cbmem - CBMEM parser to read e.g. timestamps and console log C
chromeos - These scripts can be used to access ChromeOS
resources, for example to extract System Agent reference code and other
blobs (e.g. mrc.bin, refcode, VGA option roms) from a ChromeOS recovery
image. C
crossgcc - A cross toolchain builder for -elf toolchains (ie. no
libc support) Bash
docker - Dockerfiles for coreboot-sdk, coreboot-jenkins-node,
coreboot.org-status and docs.coreboot.orgMake
dtd_parser - DTD structure parser Python2
ectool - Dumps the RAM of a laptop's Embedded/Environmental
Controller (EC). C
exynos - Computes and fills Exynos ROM checksum (for BL1 or BL2).
Python3
find_usbdebug - Help find USB debug ports Bash
futility - Firmware utility for signing ChromeOS images Make
fuzz-tests - Create test cases that crash the jpeg code. C
genbuild_h - Generate build system definitions Shell
ifdtool - Extract and dump Intel Firmware Descriptor information
C
intelmetool - Dump interesting things about Management Engine
even if hidden C
intelp2m - convert the configuration DW0/1 registers value from
an inteltool dump to coreboot macros. go
inteltool - Provides information about the Intel CPU/chipset
hardware configuration (register contents, MSRs, etc). C
intelvbttool - Parse VBT from VGA BIOS C
ipqheader
createxbl.py - Concatenates XBL segments into one ELF image
Python
ipqheader.py - Returns a packed MBN header image with the
specified base and size Python
mbncat.py - Generate ipq8064 uber SBL Python
mbn_tools.py - Contains all MBN Utilities for image
generation Python
kbc1126 - Tools used to dump the two blobs from the factory
firmware of many HP laptops with 8051-based SMSC KBC1098/KBC1126
embedded controller and insert them to the firmware image. C
kconfig - Build system Make
lint - Source linter and linting rules Shell
nixos - A script and NixOS configuration files to create an ISO
image for testing purposes and for working on firmware. Bash
mainboard - mainboard specific scripts
google - Directory for google mainboard specific scripts
marvell - Add U-Boot boot loader for Marvell ARMADA38X C
me_cleaner - Tool for
partial deblobbing of Intel ME/TXE firmware images Python
nvramtool - Reads and writes coreboot parameters and displaying
information from the coreboot table in CMOS/NVRAM. C
pmh7tool - Dumps, reads and writes PMH7 registers on Lenovo
ThinkPads. PMH7 is used for switching on and off the power of some
devices on the board such as dGPU. C
post - Userspace utility that can be used to test POST cards. C
qemu - Makefile & comprehensive default config for QEMU Q35
emulation Make
qualcomm - CMM script to debug Qualcomm coreboot environments.
CMM
release - Generate coreboot release Bash
riscv
make-spike-elf.sh - Converts a flat file into an ELF, that
can be passed to SPIKE, the RISC-V reference emulator.Bash
sifive-gpt.py - Wraps the bootblock in a GPT partition for
SiFive's bootrom. Python3
config - Manipulate options in a .config file from the
command line Bash
cross-repo-cherrypick - Pull in patches from another tree
from a gerrit repository. Shell
decode_spd.sh - Decodes Serial Presence Detect (SPD) files
into various human readable formats. Bash
dts-to-fmd.sh -Converts a depthcharge fmap.dts into an
fmaptool compatible .fmd format Bash
find-unused-kconfig-symbols.sh - Points out Kconfig
variables that may be unused. There are some false positives, but it
serves as a starting point Shell
gerrit-rebase - Applies all commits that from-branch has
over to-branch, based on a common ancestor and gerrit meta-data Bash
get_maintainer.pl - Print selected MAINTAINERS information
for the files modified in a patch or for a file Perl
maintainers.go - Build subsystem Maintainers Go
no-fsf-addresses.sh - Removes various FSF addresses from
license headers Shell
parse-maintainers.pl - Script to alphabetize MAINTAINERS
file Perl
rm_unused_code - Remove all code not used for a platform
from the local git repository for auditing or release Bash
show_platforms.sh - Makes a list of platforms in the tree.
Does not show variants. Shell
update_submodules - Check all submodules for updates Bash
showdevicetree - Compile and dump the device tree C
spdtool - Dumps SPD ROMs from a given blob to separate files
using known patterns and reserved bits. Useful for analysing firmware
that holds SPDs on boards that have soldered down DRAM. python
spkmodem_recv - Decode spkmodem signals C
superiotool - A user-space utility to detect Super I/O of a
mainboard and provide detailed information about the register contents
of the Super I/O. C
supermicro - Tools for supermicro platforms
smcbiosinfo - Generates SMC biosinfo for BMC BIOS updates
C
testing - coreboot test targets Make
uio_usbdebug - Debug coreboot's usbdebug driver inside a running
operating system (only Linux at this time). C
util_readme - Creates README.md of description files in ./util
subdirectories Bash
vboot_list - Tools to generate a list of vboot enabled devices to
the documentation Bash
vgabios - emulated vga driver for qemu C
x86 - Generates 32-bit PAE page tables based on a CSV input file.
Go
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