The Linux kernel has the idea of an "untrusted" PCI device, which may
have limited I/O and memory access permissions, depending on which IOMMU
domains it may be a part of.
https://crrev.com/c/3406512 is a backport to the ChromiumOS kernel which
checks for this property.
BUG=b:215424986
TEST=dump SSDT on google/redrix, verify it contains the expected
UntrustedDevice property
Change-Id: I1a02ca7c5f717097ec97cf6373b9e0b81a13e05d
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61384
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Kangheui Won <khwon@chromium.org>
3babc8e12c