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authorSubrata Banik <subratabanik@google.com>2022-12-23 14:58:54 +0000
committerSubrata Banik <subratabanik@google.com>2022-12-27 04:41:33 +0000
commitb4767ce169b202af2a9091275e30881172810fc6 (patch)
tree12439a38007834294dae3c0340160fca8c7220d1 /src/mainboard/google/brya/variants/marasov
parent3a60e5c827b4ae87114f208a28dfd43e6145ccd5 (diff)
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>
Diffstat (limited to 'src/mainboard/google/brya/variants/marasov')
-rw-r--r--src/mainboard/google/brya/variants/marasov/overridetree.cb4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/marasov/overridetree.cb b/src/mainboard/google/brya/variants/marasov/overridetree.cb
index 484a6327f2..bf9d5e037c 100644
--- a/src/mainboard/google/brya/variants/marasov/overridetree.cb
+++ b/src/mainboard/google/brya/variants/marasov/overridetree.cb
@@ -206,6 +206,10 @@ chip soc/intel/alderlake
probe STORAGE STORAGE_NVME
end
device ref ish on
+ chip drivers/intel/ish
+ register "add_acpi_dma_property" = "true"
+ device generic 0 on end
+ end
probe STORAGE STORAGE_UFS
end
device ref ufs on