diff options
| author | Subrata Banik <subratabanik@google.com> | 2022-09-08 09:38:08 -0700 |
|---|---|---|
| committer | Subrata Banik <subratabanik@google.com> | 2022-09-10 18:59:37 +0000 |
| commit | a3ad319fbf3105a2763834758f36e6471388fbfd (patch) | |
| tree | 4c0751cbde0b11c7b9a7becc2948d1e1b8262e6f | |
| parent | e2542a1af160eabb89847be0b46990ac6244eeef (diff) | |
soc/intel/meteorlake: Disable FSP UPDs related to virtualization
This patch disables FSP UPDs (`VtdDisable` and `VmxEnable`) as kernel
cmdline still passes `intel_iommu=off` to turn off virtualization.
BUG=b:241746156
TEST=Able to boot Google/rex to ChromeOS UI.
Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I21e178a93e311889f2ab7d1a08230d21b051f45e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67452
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
| -rw-r--r-- | src/soc/intel/meteorlake/romstage/fsp_params.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/soc/intel/meteorlake/romstage/fsp_params.c b/src/soc/intel/meteorlake/romstage/fsp_params.c index bd88c158de..be242e92d6 100644 --- a/src/soc/intel/meteorlake/romstage/fsp_params.c +++ b/src/soc/intel/meteorlake/romstage/fsp_params.c @@ -2,6 +2,7 @@ #include <assert.h> #include <console/console.h> +#include <cpu/intel/cpu_ids.h> #include <cpu/x86/msr.h> #include <device/device.h> #include <fsp/fsp_debug_event.h> @@ -234,6 +235,15 @@ static void fill_fspm_usb4_params(FSP_M_CONFIG *m_cfg, static void fill_fspm_vtd_params(FSP_M_CONFIG *m_cfg, const struct soc_intel_meteorlake_config *config) { + const uint32_t cpuid = cpu_get_cpuid(); + + /* FIXME: Enable Vtd back when kernel cmdline needs it. */ + if (cpuid == CPUID_METEORLAKE_A0_1 || cpuid == CPUID_METEORLAKE_A0_2) { + m_cfg->VtdDisable = 1; + m_cfg->VmxEnable = 0; + return; + } + m_cfg->VtdDisable = 0; m_cfg->VtdBaseAddress[0] = GFXVT_BASE_ADDRESS; m_cfg->VtdBaseAddress[1] = VTVC0_BASE_ADDRESS; |