coreboot-kgpe-d16/util
Patrick Rudolph d023909b01 treewide: Disable R_AMD64_32S relocation support
This fixes a hard to debug hang that could occur in any stage, but in
the end it follows simple rules and is easy to fix.

In long mode the 32bit displacement addressing used on 'mov' and 'lea'
instructions is sign-extended. Those instructions can be found using
readelf on the stage and searching for relocation type R_X86_64_32S.

The sign extension is no issue when either running in protected mode or
the code module and thus the address is below 2GiB. If the address is
greater than 2GiB, as usually the case for code in TSEG, the higher
address bits [64:32] are all set to 1 and the effective address is
pointing to memory not paged. Accessing this memory will cause a page
fault, which isn't handled either.

To prevent such problems
- disable R_AMD64_32S relocations in rmodtool
- add comment explaining why it's not allowed
- use the pseudo op movabs, which doesn't use 32bit displacement addressing
- Print a useful error message if such a reloc is present in the code

Fixes a crash in TSEG and when in long mode seen on Intel Sandybridge.

Change-Id: Ia5f5a9cde7c325f67b12e3a8e9a76283cc3870a3
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55448
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2021-06-15 07:47:35 +00:00
..
abuild Revert "abuild: Allow disabling mainboards" 2021-02-12 10:52:24 +00:00
acpi
amdfwtool amdfwtool: Null check the pointers before using them 2021-06-14 05:52:40 +00:00
amdtools
apcb
archive util/archive: Clean up Makefile 2021-02-16 08:11:40 +00:00
autoport sb/intel/bd82x6x: Drop P_LVLx support in FADT 2021-06-07 11:37:17 +00:00
bincfg util/bincfg/Makefile: change ./bincfg to $(abspath $(TARGET)) 2021-04-07 08:49:03 +00:00
board_status Documentation: util/board_status/README formatting 2021-02-15 18:22:59 +00:00
bucts util/bucts: Clean up Makefile to match others 2021-02-25 10:03:00 +00:00
cavium
cbfstool treewide: Disable R_AMD64_32S relocation support 2021-06-15 07:47:35 +00:00
cbmem util/cbmem: Update Makefiles 2021-02-25 10:03:11 +00:00
chromeos
crossgcc util/crossgcc: Avoid complex filename sets 2021-06-06 13:08:37 +00:00
docker docker/coreboot-jenkins-node: Add more tools for zephyr 2021-02-16 23:39:09 +00:00
dtd_parser
ectool util/ectool: Update Makefile 2021-02-25 10:03:17 +00:00
exynos
find_usbdebug
futility
fuzz-tests
genbuild_h util/genbuild_h: Update IASL location finding code 2021-05-12 15:14:28 +00:00
gitconfig
ifdtool
intelmetool
intelp2m util/intelp2m/fsp: Fix wrong register decoding for direction and interrupt 2021-06-12 21:21:16 +00:00
inteltool inteltool: add initial support for Emmits Burg PCH 2021-05-10 14:13:10 +00:00
intelvbttool
ipqheader
kbc1126 treewide: Remove trailing whitespace 2021-02-17 17:30:05 +00:00
kconfig treewide: Remove trailing whitespace 2021-02-17 17:30:05 +00:00
lint lint: checkpatch: Add SUSPICIOUS_CODE_INDENT test 2021-06-08 22:10:07 +00:00
mainboard mainboards using soc/amd/picasso: use aliases for PCIe devices on bus 0 2021-06-01 20:37:15 +00:00
marvell
me_cleaner
mma migrate out of flashrom deprecated options 2021-04-29 01:05:29 +00:00
msrtool util/msrtool: teach the configure script to use clang 2021-02-11 14:32:02 +00:00
mtkheader
nvidia
nvramtool
pgtblgen
pmh7tool
post
qemu util/qemu: Add additional config file for QEMU/Q35 2021-03-12 23:45:14 +00:00
qualcomm util/qualcomm: fix python syntax warnings 2021-03-18 08:15:18 +00:00
release
riscv
rockchip
sconfig sconfig: Emit probe_list in all stages 2021-05-24 16:55:14 +00:00
scripts maintainers.go: Work around common mistake in MAINTAINERS 2021-04-14 12:18:58 +00:00
showdevicetree
spd_tools util: Add DDR4 generic SPD for MT40A512M16TB-062E:R 2021-06-14 05:27:39 +00:00
spdtool
spkmodem_recv
superiotool util/superiotool: Add ITE IT8616E/IT8656E support 2021-02-12 07:49:43 +00:00
supermicro
testing util/testing/Makefile.inc: Add new line as help section separator 2021-05-18 10:09:59 +00:00
uio_usbdebug Rename do_printk() to printk() 2021-04-14 10:38:09 +00:00
util_readme
vboot_list
vgabios
x86
xcompile
README.md

README.md

  • 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 - A set of tools to compare extended) K8 memory settings. Perl
  • 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
  • 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 Lex Yacc
  • board_status - Tools to collect logs and upload them to the board status repository Bash Go
  • 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 Chrome OS resources, for example to extract System Agent reference code and other blobs (e.g. mrc.bin, refcode, VGA option roms) from a Chrome OS recovery image. C
  • crossgcc - A cross toolchain builder for -elf toolchains (ie. no libc support)
  • docker - Dockerfiles for coreboot-sdk, coreboot-jenkins-node, coreboot.org-status and docs.coreboot.org
  • 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
  • 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
  • gitconfig - Initialize git repository submodules install git hooks Bash
  • ifdtool - Extract and dump Intel Firmware Descriptor information C
  • intelmetool - Dump interesting things about Management Engine even if hidden C
  • intelp2m - Intel Pad to Macro (intelp2m) converter '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 - Concatentates 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
  • 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
  • mma - Memory Margin Analysis automation tests Bash
  • msrtool - Dumps chipset-specific MSR registers. C
  • mtkheader - Generate MediaTek bootload header. Python3
  • nvidia - nvidia blob parsers
  • nvramtool - Reads and writes coreboot parameters and displaying information from the coreboot table in CMOS/NVRAM. C
  • pgtblgen - Generates page tables based on fixed physical address. 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
  • 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
  • rockchip - Generate Rockchip idblock bootloader. Python3
  • sconfig - coreboot device tree compiler Lex Yacc
  • scripts
    • 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.
    • 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
    • ucode_h_to_bin.sh - Microcode conversion tool Bash
    • 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
  • spd_tools - Tools for generating SPD files for DDR4 memory used in platforms with memory down configuration.
    • gen_spd.go - Generates de-duplicated SPD files using a global memory part list provided by the mainboard in JSON format. Go
    • gen_part_id.go - Allocates DRAM strap IDs for different DDR4 memory parts used by the board. Go
  • 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
  • xcompile - Cross compile setup Bash