Change in coreboot[master]: soc/amd/{cezanne,common}: Enable IOMMU PCIe Device

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/55737 )

Change subject: soc/amd/{cezanne,common}: Enable IOMMU PCIe Device
......................................................................

soc/amd/{cezanne,common}: Enable IOMMU PCIe Device

This change only enables the IOMMU device. We still require the IVRS
table to take advantage of the IOMMU. This will happen when the picasso
IVRS code is moved into common.

BUG=b:190515051
TEST=lspci shows IOMMU device
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Device 1631

Signed-off-by: Raul E Rangel 
Change-Id: I5c7cae3d25af5a45d48658ffa948a2856adc4346
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55737
Tested-by: build bot (Jenkins) 
Reviewed-by: Jason Glenesk 
Reviewed-by: Felix Held 
---
M src/mainboard/google/guybrush/variants/baseboard/devicetree.cb
M src/soc/amd/cezanne/Kconfig
M src/soc/amd/common/block/iommu/iommu.c
3 files changed, 4 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Felix Held: Looks good to me, approved
  Jason Glenesk: Looks good to me, but someone else must approve

diff --git a/src/mainboard/google/guybrush/variants/baseboard/devicetree.cb b/src/mainboard/google/guybrush/variants/baseboard/devicetree.cb
index cf0f515..30ebe62 100644
--- a/src/mainboard/google/guybrush/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/guybrush/variants/baseboard/devicetree.cb
@@ -186,6 +186,8 @@
    }"

device domain 0 on
+		device ref iommu on end
+
    	device ref gpp_bridge_0 on
    		chip drivers/wifi/generic
    			register "wake" = "GEVENT_8"
diff --git a/src/soc/amd/cezanne/Kconfig b/src/soc/amd/cezanne/Kconfig
index 1bb9353..8f93512 100644
--- a/src/soc/amd/cezanne/Kconfig
+++ b/src/soc/amd/cezanne/Kconfig
@@ -47,6 +47,7 @@
    select SOC_AMD_COMMON_BLOCK_GRAPHICS
    select SOC_AMD_COMMON_BLOCK_HAS_ESPI
    select SOC_AMD_COMMON_BLOCK_I2C
+	select SOC_AMD_COMMON_BLOCK_IOMMU
    select SOC_AMD_COMMON_BLOCK_LPC
    select SOC_AMD_COMMON_BLOCK_LPC_SPI_DMA
    select SOC_AMD_COMMON_BLOCK_NONCAR
diff --git a/src/soc/amd/common/block/iommu/iommu.c b/src/soc/amd/common/block/iommu/iommu.c
index 49683d4..b6e4ac2 100644
--- a/src/soc/amd/common/block/iommu/iommu.c
+++ b/src/soc/amd/common/block/iommu/iommu.c
@@ -42,6 +42,7 @@
    PCI_DEVICE_ID_AMD_15H_MODEL_303F_NB_IOMMU,
    PCI_DEVICE_ID_AMD_15H_MODEL_707F_NB_IOMMU,
    PCI_DEVICE_ID_AMD_17H_MODEL_1020_NB_IOMMU,
+	PCI_DEVICE_ID_AMD_17H_MODEL_606F_NB_IOMMU,
    0
 };