diff options
| author | John Zhao <john.zhao@intel.com> | 2020-01-03 11:01:23 -0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-03-12 21:36:57 +0000 |
| commit | 49111cd2ba12d33caa1031b5be6b631c9f76486a (patch) | |
| tree | 322b86617966f4f641add56664059c0bcf90096f /src/soc/intel/tigerlake/systemagent.c | |
| parent | a7ec42619c310a5e72256821d17f62e7e64bce45 (diff) | |
soc/intel/tigerlake: Enable VT-d and generate DMAR ACPI table
Tigerlake platform supports Virtualization Technology for Directed I/O.
Enable VT-d feature and generate DMAR ACPI table.
BUG=None
TEST=Booted to kernel and "dmesg | grep DMAR" to verify the DMAR ACPI
remapping table existence. Retrieve /sys/firmware/acpi/tables/DMAR and
"iasl -d DMAR" to check all entries.
Change-Id: Ib89d0835385487735c63062a084794d9da19605e
Signed-off-by: John Zhao <john.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38165
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com>
Diffstat (limited to 'src/soc/intel/tigerlake/systemagent.c')
| -rw-r--r-- | src/soc/intel/tigerlake/systemagent.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/soc/intel/tigerlake/systemagent.c b/src/soc/intel/tigerlake/systemagent.c index 9c8f64573d..152f8f90d9 100644 --- a/src/soc/intel/tigerlake/systemagent.c +++ b/src/soc/intel/tigerlake/systemagent.c @@ -1,7 +1,7 @@ /* * This file is part of the coreboot project. * - * Copyright (C) 2019 Intel Corp. + * Copyright (C) 2019-2020 Intel Corp. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -21,6 +21,7 @@ #include <device/device.h> #include <device/pci.h> +#include <device/pci_ops.h> #include <intelblocks/systemagent.h> #include <soc/iomap.h> #include <soc/systemagent.h> @@ -56,6 +57,13 @@ void soc_add_fixed_mmio_resources(struct device *dev, int *index) sa_add_fixed_mmio_resources(dev, index, soc_fixed_resources, ARRAY_SIZE(soc_fixed_resources)); + + /* Add Vt-d resources if VT-d is enabled */ + if ((pci_read_config32(dev, CAPID0_A) & VTD_DISABLE)) + return; + + sa_add_fixed_mmio_resources(dev, index, soc_vtd_resources, + ARRAY_SIZE(soc_vtd_resources)); } /* |