tree 12439a38007834294dae3c0340160fca8c7220d1
parent 3a60e5c827b4ae87114f208a28dfd43e6145ccd5
author Subrata Banik <subratabanik@google.com> 1671807534 +0000
committer Subrata Banik <subratabanik@google.com> 1672116093 +0000

mb/google/brya/var/marasov: Add DmaProperty for ISH

On Marasov, the ISH is running closed source firmware, so the ChromeOS
security requirements specify it must be behind an IOMMU. Add
DmaProperty to the ISH _DSD on Marasov.

TEST=Kernel marks ISH (PCI device 12.0) as untrusted, and changes the
IOMMU group type to "DMA". Also, device still goes to S0i3.

Before:
$ cat /sys/devices/pci0000\:00/0000\:00\:12.0/untrusted
0

After:
$ cat /sys/devices/pci0000\:00/0000\:00\:12.0/untrusted
1

Change-Id: I4b65b8909c41b06852fe7771375029bd2e76e111
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71263
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>