From 53b08c347f54970cf5f6ce35b8e1a1fe5f8a11f9 Mon Sep 17 00:00:00 2001 From: Subrata Banik Date: Mon, 10 Dec 2018 14:11:35 +0530 Subject: cpuid: Add helper function for cpuid(1) functions This patch introduces 3 helper function for cpuid(1) : 1. cpu_get_cpuid() -> to get processor id (from cpuid.eax) 2. cpu_get_feature_flags_ecx -> to get processor feature flag (from cpuid.ecx) 3. cpu_get_feature_flags_edx -> to get processor feature flag (from cpuid.edx) Above 3 helper functions are targeted to replace majority of cpuid(1) references. Change-Id: Ib96a7c79dadb1feff0b8d58aa408b355fbb3bc50 Signed-off-by: Subrata Banik Reviewed-on: https://review.coreboot.org/c/30123 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh --- src/cpu/intel/common/common_init.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'src/cpu/intel/common') diff --git a/src/cpu/intel/common/common_init.c b/src/cpu/intel/common/common_init.c index 02eb0e201e..7dbbfda2e8 100644 --- a/src/cpu/intel/common/common_init.c +++ b/src/cpu/intel/common/common_init.c @@ -16,20 +16,21 @@ */ #include +#include #include #include #include "common.h" void set_vmx(void) { - struct cpuid_result regs; msr_t msr; + uint32_t feature_flag; int enable = IS_ENABLED(CONFIG_ENABLE_VMX); int lock = IS_ENABLED(CONFIG_SET_VMX_LOCK_BIT); - regs = cpuid(1); + feature_flag = cpu_get_feature_flags_ecx(); /* Check that the VMX is supported before reading or writing the MSR. */ - if (!((regs.ecx & CPUID_VMX) || (regs.ecx & CPUID_SMX))) { + if (!((feature_flag & CPUID_VMX) || (feature_flag & CPUID_SMX))) { printk(BIOS_DEBUG, "CPU doesn't support VMX; exiting\n"); return; } @@ -52,7 +53,7 @@ void set_vmx(void) if (enable) { msr.lo |= (1 << 2); - if (regs.ecx & CPUID_SMX) + if (feature_flag & CPUID_SMX) msr.lo |= (1 << 1); } -- cgit v1.2.3