| commit | ac8c378777d861000d82eea1c7439f16dcd45797 | |
| author | Robert Zieba <robertzieba@google.com> | |
| Wed, 7 Sep 2022 22:25:15 +0000 (7 16:25 -0600) | ||
| committer | Martin L Roth <gaumless@gmail.com> | |
| Sun, 5 Mar 2023 15:31:07 +0000 (5 15:31 +0000) | ||
| tree | 58dafb5dd844410cec91e56c6f7ec5c8defd8fd5 | treesnapshot (tar.gz zip) |
| parent | f1a4cffc88d8a5490c444f41b60eaaf544399998 | commitdiff |
cpu/x86/smm: Add PCI resource store functionality
In certain cases data within protected memmory areas like SMRAM could
be leaked or modified if an attacker remaps PCI BARs to point within
that area. Add support to the existing SMM runtime to allow storing
PCI resources in SMRAM and then later retrieving them.
BRANCH=guybrush
BUG=b:186792595
TEST=builds
Signed-off-by: Robert Zieba <robertzieba@google.com>
Change-Id: I23fb1e935dd1b89f1cc5c834cc2025f0fe5fda37
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67931
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
In certain cases data within protected memmory areas like SMRAM could
be leaked or modified if an attacker remaps PCI BARs to point within
that area. Add support to the existing SMM runtime to allow storing
PCI resources in SMRAM and then later retrieving them.
BRANCH=guybrush
BUG=b:186792595
TEST=builds
Signed-off-by: Robert Zieba <robertzieba@google.com>
Change-Id: I23fb1e935dd1b89f1cc5c834cc2025f0fe5fda37
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67931
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>