soc/amd/stoneyridge: Set IOMMU support to follow device setting
Instead of forcing the IOMMU to be enabled, change it to only be enabled
if the device is enabled in devicetree.
BUG=b:118612241
TEST=Verify that IOMMU is disabled.
Change-Id: I6cfd6c81f47de23c54a49ec7cf87b219215ced5e
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/29343
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Daniel Kurtz <djkurtz@google.com>
diff --git a/src/soc/amd/stoneyridge/northbridge.c b/src/soc/amd/stoneyridge/northbridge.c
index 5fb28c0..3a0c77d 100644
--- a/src/soc/amd/stoneyridge/northbridge.c
+++ b/src/soc/amd/stoneyridge/northbridge.c
@@ -506,7 +506,8 @@
void SetNbEnvParams(GNB_ENV_CONFIGURATION *params)
{
- params->IommuSupport = TRUE;
+ const struct device *dev = SOC_IOMMU_DEV;
+ params->IommuSupport = dev && dev->enabled;
set_board_env_params(params);
}