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authorSubrata Banik <subrata.banik@intel.com>2018-12-10 14:11:35 +0530
committerSubrata Banik <subrata.banik@intel.com>2018-12-13 04:32:57 +0000
commit53b08c347f54970cf5f6ce35b8e1a1fe5f8a11f9 (patch)
treeb4eed19fbf1b9f35dfbdddcc43fc84469176ec59 /src/soc/intel/broadwell
parente3110b862071ae0797afb0688495315a7dd47739 (diff)
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 <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/30123 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/soc/intel/broadwell')
-rw-r--r--src/soc/intel/broadwell/cpu.c7
-rw-r--r--src/soc/intel/broadwell/romstage/report_platform.c15
2 files changed, 12 insertions, 10 deletions
diff --git a/src/soc/intel/broadwell/cpu.c b/src/soc/intel/broadwell/cpu.c
index 2f9f78f69e..ec8f7f30a8 100644
--- a/src/soc/intel/broadwell/cpu.c
+++ b/src/soc/intel/broadwell/cpu.c
@@ -19,6 +19,7 @@
#include <device/pci.h>
#include <string.h>
#include <arch/acpi.h>
+#include <arch/cpu.h>
#include <cpu/cpu.h>
#include <cpu/x86/mtrr.h>
#include <cpu/x86/msr.h>
@@ -498,12 +499,12 @@ static void enable_lapic_tpr(void)
static void configure_dca_cap(void)
{
- struct cpuid_result cpuid_regs;
+ uint32_t feature_flag;
msr_t msr;
/* Check feature flag in CPUID.(EAX=1):ECX[18]==1 */
- cpuid_regs = cpuid(1);
- if (cpuid_regs.ecx & (1 << 18)) {
+ feature_flag = cpu_get_feature_flags_ecx();
+ if (feature_flag & CPUID_DCA) {
msr = rdmsr(IA32_PLATFORM_DCA_CAP);
msr.lo |= 1;
wrmsr(IA32_PLATFORM_DCA_CAP, msr);
diff --git a/src/soc/intel/broadwell/romstage/report_platform.c b/src/soc/intel/broadwell/romstage/report_platform.c
index 44a3d2714c..db4b2ebdc5 100644
--- a/src/soc/intel/broadwell/romstage/report_platform.c
+++ b/src/soc/intel/broadwell/romstage/report_platform.c
@@ -86,7 +86,7 @@ static struct {
static void report_cpu_info(void)
{
struct cpuid_result cpuidr;
- u32 i, index;
+ u32 i, index, cpu_id, cpu_feature_flag;
char cpu_string[50], *cpu_name = cpu_string; /* 48 bytes are reported */
int vt, txt, aes;
msr_t microcode_ver;
@@ -114,12 +114,12 @@ static void report_cpu_info(void)
microcode_ver.lo = 0;
microcode_ver.hi = 0;
wrmsr(IA32_BIOS_SIGN_ID, microcode_ver);
- cpuidr = cpuid(1);
+ cpu_id = cpu_get_cpuid();
microcode_ver = rdmsr(IA32_BIOS_SIGN_ID);
/* Look for string to match the name */
for (i = 0; i < ARRAY_SIZE(cpu_table); i++) {
- if (cpu_table[i].cpuid == cpuidr.eax) {
+ if (cpu_table[i].cpuid == cpu_id) {
cpu_type = cpu_table[i].name;
break;
}
@@ -127,11 +127,12 @@ static void report_cpu_info(void)
printk(BIOS_DEBUG, "CPU: %s\n", cpu_name);
printk(BIOS_DEBUG, "CPU: ID %x, %s, ucode: %08x\n",
- cpuidr.eax, cpu_type, microcode_ver.hi);
+ cpu_id, cpu_type, microcode_ver.hi);
- aes = (cpuidr.ecx & (1 << 25)) ? 1 : 0;
- txt = (cpuidr.ecx & (1 << 6)) ? 1 : 0;
- vt = (cpuidr.ecx & (1 << 5)) ? 1 : 0;
+ cpu_feature_flag = cpu_get_feature_flags_ecx();
+ aes = (cpu_feature_flag & CPUID_AES) ? 1 : 0;
+ txt = (cpu_feature_flag & CPUID_SMX) ? 1 : 0;
+ vt = (cpu_feature_flag & CPUID_VMX) ? 1 : 0;
printk(BIOS_DEBUG, "CPU: AES %ssupported, TXT %ssupported, "
"VT %ssupported\n", mode[aes], mode[txt], mode[vt]);
}