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cpu/intel/common: Add/Use common function to set virtualization

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Migrate duplicated enable_vmx() method from multiple CPUs to common
folder.  Add common virtualization option for CPUs which support it.

Note that this changes the default to enable virtualization on CPUs
that support it.

Change-Id: Ib110bed6c9f5508e3f867dcdc6f341fc50e501d1
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/17874
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins)
This commit is contained in:
Matt DeVillier
2016-12-14 16:12:43 -06:00
committed by Nico Huber
parent 2a58975264
commit ed6fe2f64b
35 changed files with 167 additions and 384 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src/cpu/intel/fsp_model_206ax/Kconfig
View File

@@ -37,6 +37,7 @@ config CPU_SPECIFIC_OPTIONS
select PARALLEL_CPU_INIT
select TSC_SYNC_MFENCE
select LAPIC_MONOTONIC_TIMER
select CPU_INTEL_COMMON
config BOOTBLOCK_CPU_INIT
string
@@ -46,8 +47,4 @@ config SMM_TSEG_SIZE
hex
default 0x800000
config ENABLE_VMX
bool "Enable VMX for virtualization"
default n
endif

1
src/cpu/intel/fsp_model_206ax/Makefile.inc
View File

@@ -1,6 +1,7 @@
ramstage-y += model_206ax_init.c
subdirs-y += ../../x86/name
subdirs-y += ../smm/gen1
subdirs-y += ../common
ramstage-y += acpi.c

42
src/cpu/intel/fsp_model_206ax/model_206ax_init.c
View File

@@ -32,43 +32,7 @@
#include "model_206ax.h"
#include "chip.h"
#include <cpu/intel/smm/gen1/smi.h>
static void enable_vmx(void)
{
struct cpuid_result regs;
msr_t msr;
int enable = IS_ENABLED(CONFIG_ENABLE_VMX);
regs = cpuid(1);
/* Check that the VMX is supported before reading or writing the MSR. */
if (!((regs.ecx & CPUID_VMX) || (regs.ecx & CPUID_SMX)))
return;
msr = rdmsr(IA32_FEATURE_CONTROL);
if (msr.lo & (1 << 0)) {
printk(BIOS_ERR, "VMX is locked, so %s will do nothing\n", __func__);
/* VMX locked. If we set it again we get an illegal
* instruction
*/
return;
}
/* The IA32_FEATURE_CONTROL MSR may initialize with random values.
* It must be cleared regardless of VMX config setting.
*/
msr.hi = msr.lo = 0;
printk(BIOS_DEBUG, "%s VMX\n", enable ? "Enabling" : "Disabling");
if (enable) {
msr.lo |= (1 << 2);
if (regs.ecx & CPUID_SMX)
msr.lo |= (1 << 1);
}
wrmsr(IA32_FEATURE_CONTROL, msr);
}
#include <cpu/intel/common/common.h>
/* Convert time in seconds to POWER_LIMIT_1_TIME MSR value */
static const u8 power_limit_time_sec_to_msr[] = {
@@ -390,8 +354,8 @@ static void model_206ax_init(struct device *cpu)
enable_lapic_tpr();
setup_lapic();
/* Enable virtualization if Kconfig option is set */
enable_vmx();
/* Set virtualization based on Kconfig option */
set_vmx();
/* Configure Enhanced SpeedStep and Thermal Sensors */
configure_misc();