diff options
| author | Sean Rhodes <sean@starlabs.systems> | 2021-07-13 07:23:22 +0100 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2021-10-18 12:32:43 +0000 |
| commit | 66c8062a0072e9b162bf132fc5f279db158ab708 (patch) | |
| tree | 31461bf5d1e53442f192118d6ace3fac6034f1e1 /src/soc/intel/skylake/systemagent.c | |
| parent | bc89bc6680c186c3a7969e93f48b90bc6d6e9eb6 (diff) | |
soc/skylake: Make VT-d controllable from CMOS option
Make VT-d enable or disable based on CMOS value "vtd"
1 = Enable
0 = Disable
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I1aea14968e08ee6af822bd259ca1d462f8926994
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56252
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'src/soc/intel/skylake/systemagent.c')
| -rw-r--r-- | src/soc/intel/skylake/systemagent.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/soc/intel/skylake/systemagent.c b/src/soc/intel/skylake/systemagent.c index 2b297670b1..f11208720d 100644 --- a/src/soc/intel/skylake/systemagent.c +++ b/src/soc/intel/skylake/systemagent.c @@ -6,15 +6,20 @@ #include <device/pci_ops.h> #include <intelblocks/power_limit.h> #include <intelblocks/systemagent.h> +#include <option.h> #include <soc/cpu.h> #include <soc/iomap.h> #include <soc/msr.h> #include <soc/pci_devs.h> #include <soc/systemagent.h> +#include <types.h> #include "chip.h" -bool soc_is_vtd_capable(void) +bool soc_vtd_enabled(void) { + const unsigned int vtd = get_uint_option("vtd", 1); + if (!vtd) + return false; struct device *const root_dev = pcidev_path_on_root(SA_DEVFN_ROOT); return root_dev && !(pci_read_config32(root_dev, CAPID0_A) & VTD_DISABLE); @@ -41,7 +46,7 @@ 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)); - if (soc_is_vtd_capable()) { + if (soc_vtd_enabled()) { if (is_devfn_enabled(SA_DEVFN_IGD)) sa_add_fixed_mmio_resources(dev, index, &soc_gfxvt_mmio_descriptor, 1); |