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Raul E Rangel 5bb926e3c9 arch/x86/exception: Print stack on exception 
It's useful to see the stack when an exception happens so you can see
the variables on the stack, and also manually recreate the back trace.

If you need to recreate the back trace, you will need to add
-fno-omit-frame-pointer to the CFLAGS.

BUG=b:159081993
TEST=Caused an exception and saw the stack dumped. Then I manually
recreated the back trace.

0xcc6fff6c:     0xcc6ce02e <- 0xcc6ce02e is in dev_initialize
0xcc6fff68:     0xcc6fff88 <-- frame 1
0xcc6fff64:     0x00000005
0xcc6fff60:     0x000000dc
0xcc6fff5c:     0x00000000
0xcc6fff58:     0x00000200
0xcc6fff54:     0x00000000
0xcc6fff50:     0x00000400
0xcc6fff4c:     0xcc6d72d4 <- 0xcc6d72d4 is in setup_default_ebdad
0xcc6fff48:     0xcc6fff68 <-ebp
0xcc6fff44:     0x00000005
0xcc6fff40:     0xcc6f571c <-esp

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I3822ea7aa23202ecc98612850402eeb4b1f7b5ef
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42884
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
 		2020-07-10 15:39:51 +00:00
3rdparty Update vboot submodule to upstream master 2020-07-03 21:03:19 +00:00
Documentation cpu/x86/smm: Add support for long mode 2020-07-08 07:28:32 +00:00
LICENSES drivers: Use SPDX identifiers 2020-05-25 22:19:21 +00:00
configs drivers/pc80/tpm: Remove LPC_TPM 2020-07-04 11:17:44 +00:00
payloads libpayload: cbgfx: Replace bilinear resampling with Lanczos 2020-07-09 00:32:17 +00:00
src arch/x86/exception: Print stack on exception 2020-07-10 15:39:51 +00:00
tests tests: Add lib/hexstrtobin-test test case 2020-07-07 17:26:42 +00:00
util util/inteltool: add PCI ID for ICH10DO 2020-07-09 21:54:33 +00:00
.checkpatch.conf
…
.clang-format lint/clang-format: set to 96 chars per line 2019-06-13 20:14:00 +00:00
.editorconfig Add .editorconfig file 2019-09-10 12:52:18 +00:00
.gitignore cbfstool: Build vboot library 2020-03-23 08:34:23 +00:00
.gitmodules Add qc_blobs repository 2020-06-30 08:57:03 +00:00
.gitreview
…
AUTHORS AUTHORS, util/: Drop individual copyright notices 2020-05-09 21:21:32 +00:00
COPYING
…
MAINTAINERS MAINTAINERS: Add Maintainers for Prodrive Hermes Mainboard 2020-07-04 11:16:19 +00:00
Makefile build system: Rely on xcompile for HOSTCC and HOSTCXX 2020-07-08 08:53:46 +00:00
Makefile.inc Add qc_blobs repository 2020-06-30 08:57:03 +00:00
README.md README.md: Remove link to deprecated wiki 2019-11-16 20:39:55 +00:00
gnat.adc treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
toolchain.inc Remove MAYBE_STATIC_BSS and ENV_STAGE_HAS_BSS_SECTION 2020-05-26 15:04:08 +00:00

README.md

coreboot README

coreboot is a Free Software project aimed at replacing the proprietary BIOS (firmware) found in most computers. coreboot performs a little bit of hardware initialization and then executes additional boot logic, called a payload.

With the separation of hardware initialization and later boot logic, coreboot can scale from specialized applications that run directly firmware, run operating systems in flash, load custom bootloaders, or implement firmware standards, like PC BIOS services or UEFI. This allows for systems to only include the features necessary in the target application, reducing the amount of code and flash space required.

coreboot was formerly known as LinuxBIOS.

Payloads

After the basic initialization of the hardware has been performed, any desired "payload" can be started by coreboot.

See https://www.coreboot.org/Payloads for a list of supported payloads.

Supported Hardware

coreboot supports a wide range of chipsets, devices, and mainboards.

For details please consult:

Build Requirements

  • make
  • gcc / g++ Because Linux distribution compilers tend to use lots of patches. coreboot does lots of "unusual" things in its build system, some of which break due to those patches, sometimes by gcc aborting, sometimes - and that's worse - by generating broken object code. Two options: use our toolchain (eg. make crosstools-i386) or enable the ANY_TOOLCHAIN Kconfig option if you're feeling lucky (no support in this case).
  • iasl (for targets with ACPI support)
  • pkg-config
  • libssl-dev (openssl)

Optional:

  • doxygen (for generating/viewing documentation)
  • gdb (for better debugging facilities on some targets)
  • ncurses (for make menuconfig and make nconfig)
  • flex and bison (for regenerating parsers)

Building coreboot

Please consult https://www.coreboot.org/Build_HOWTO for details.

Testing coreboot Without Modifying Your Hardware

If you want to test coreboot without any risks before you really decide to use it on your hardware, you can use the QEMU system emulator to run coreboot virtually in QEMU.

Please see https://www.coreboot.org/QEMU for details.

Website and Mailing List

Further details on the project, a FAQ, many HOWTOs, news, development guidelines and more can be found on the coreboot website:

https://www.coreboot.org

You can contact us directly on the coreboot mailing list:

https://www.coreboot.org/Mailinglist

Copyright and License

The copyright on coreboot is owned by quite a large number of individual developers and companies. Please check the individual source files for details.

coreboot is licensed under the terms of the GNU General Public License (GPL). Some files are licensed under the "GPL (version 2, or any later version)", and some files are licensed under the "GPL, version 2". For some parts, which were derived from other projects, other (GPL-compatible) licenses may apply. Please check the individual source files for details.

This makes the resulting coreboot images licensed under the GPL, version 2.