diff options
Diffstat (limited to 'src/cpu/intel/model_2065x/model_2065x_init.c')
| -rw-r--r-- | src/cpu/intel/model_2065x/model_2065x_init.c | 55 |
1 files changed, 3 insertions, 52 deletions
diff --git a/src/cpu/intel/model_2065x/model_2065x_init.c b/src/cpu/intel/model_2065x/model_2065x_init.c index 7987f8e36a..9bc9df1e99 100644 --- a/src/cpu/intel/model_2065x/model_2065x_init.c +++ b/src/cpu/intel/model_2065x/model_2065x_init.c @@ -32,6 +32,7 @@ #include "model_2065x.h" #include "chip.h" #include <cpu/intel/smm/gen1/smi.h> +#include <cpu/intel/common/common.h> /* * List of supported C-states in this processor @@ -132,56 +133,6 @@ int cpu_get_apic_id_map(int *apic_id_map) return threads_per_package; } -static void enable_vmx(void) -{ - struct cpuid_result regs; - msr_t msr; - int enable = 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"); - - /* Even though the Intel manual says you must set the lock bit in addition - * to the VMX bit in order for VMX to work, it is incorrect. Thus we leave - * it unlocked for the OS to manage things itself. This is good for a few - * reasons: - * - No need to reflash the bios just to toggle the lock bit. - * - The VMX bits really really should match each other across cores, so - * hard locking it on one while another has the opposite setting can - * easily lead to crashes as code using VMX migrates between them. - * - Vendors that want to "upsell" from a bios that disables+locks to - * one that doesn't is sleazy. - * By leaving this to the OS (e.g. Linux), people can do exactly what they - * want on the fly, and do it correctly (e.g. across multiple cores). - */ - if (enable) { - msr.lo |= (1 << 2); - if (regs.ecx & CPUID_SMX) - msr.lo |= (1 << 1); - } - - wrmsr(IA32_FEATURE_CONTROL, msr); -} - int cpu_config_tdp_levels(void) { @@ -383,8 +334,8 @@ static void model_2065x_init(struct device *cpu) enable_lapic_tpr(); setup_lapic(); - /* Enable virtualization if enabled in CMOS */ - enable_vmx(); + /* Set virtualization based on Kconfig option */ + set_vmx(); /* Configure Enhanced SpeedStep and Thermal Sensors */ configure_misc(); |