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Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Change-Id: Id2db229dec2ed44333faaa8c53f3a2f9d66d52e0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68200
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
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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>
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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>
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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>
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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>
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