coreboot.git - my copy of coreboot

Age	Commit message (Collapse)	Author
2022-06-01	driver/intel/fsp2_0: Disable NULL deref code when calling FSP	Arthur Heymans
	FSP needs interrupts disable so also disable generating exceptions around debug registers. Change-Id: Ia49dde68d45b71e231aaf32a0e6fd847f0e06146 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/64426 Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com> Reviewed-by: Uwe Poeche <uwe.poeche@siemens.com> Reviewed-by: Sean Rhodes <sean@starlabs.systems> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2022-05-31	x86/null_breakpoint: Remove trailing space from log message	Paul Menzel
	Currently, the log message contains an unwanted trailing space, so remove it. [ERROR] Null dereference at eip: 0x3ffad01a Change-Id: I64509ca4bad94c7db4279cc4c1e6fee2bba2e035 Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/64799 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Singer <felixsinger@posteo.net>
2022-05-16	arch/x86/null_breakpoint: Remove handler before jumping to payload	Arthur Heymans
	If a payload did any NULL dereferencing it would be broken and jump back to coreboot code. This fixes the SeaBIOS, FILO and possibly other payloads too. Fixes: 3f01cd14533f ("arch/x86: Add support for catching null dereferences through debug regs") TESTED on qemu/i440fx. Change-Id: I80f69b71f4d0fab3126e4b9f8c8dc7737b372174 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/64345 Reviewed-by: Robert Zieba <robertzieba@google.com> Reviewed-by: Stefan Ott <coreboot@desire.ch> Reviewed-by: Paul Menzel <paulepanter@mailbox.org> Reviewed-by: Raul Rangel <rrangel@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2022-05-12	arch/x86: Add support for catching null dereferences through debug regs	Robert Zieba
	This commit adds support for catching null dereferences and execution through x86's debug registers. This is particularly useful when running 32-bit coreboot as paging is not enabled to catch these through page faults. This commit adds three new configs to support this feature: DEBUG_HW_BREAKPOINTS, DEBUG_NULL_DEREF_BREAKPOINTS and DEBUG_NULL_DEREF_HALT. BUG=b:223902046 TEST=Ran on nipperkin device, verifying that HW breakpoints work as expected. Change-Id: I113590689046a13c2a552741bbfe7668a834354a Signed-off-by: Robert Zieba <robertzieba@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/63657 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Raul Rangel <rrangel@chromium.org>