commit d3abc5d1ee5ffea5647a22ddfff82c01d507f962
author Simon Glass <sjg@chromium.org> Wed Sep 25 08:11:35 2019 -0600
committer Bin Meng <bmeng.cn@gmail.com> Tue Oct 08 13:57:35 2019 +0800
tree d8d587df264e55eed155acd965fe430e37238aa6
parent 46dd41fa5a8f08af903c7f0cfde9abfc16d7efe3

x86: Move common Intel CPU info code into a function

Add cpu_intel_get_info() to find out the CPU info on modern Intel CPUs.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: add parameter and return value descriptions]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

arch/x86/cpu/broadwell/cpu_full.c

diff --git a/arch/x86/cpu/broadwell/cpu_full.c b/arch/x86/cpu/broadwell/cpu_full.c
index c1db184..d8b8482 100644
--- a/arch/x86/cpu/broadwell/cpu_full.c
+++ b/arch/x86/cpu/broadwell/cpu_full.c
@@ -645,14 +645,7 @@
 
 static int broadwell_get_info(struct udevice *dev, struct cpu_info *info)
 {
-	msr_t msr;
-
-	msr = msr_read(IA32_PERF_CTL);
-	info->cpu_freq = ((msr.lo >> 8) & 0xff) * BROADWELL_BCLK * 1000000;
-	info->features = 1 << CPU_FEAT_L1_CACHE | 1 << CPU_FEAT_MMU |
-		1 << CPU_FEAT_UCODE | 1 << CPU_FEAT_DEVICE_ID;
-
-	return 0;
+	return cpu_intel_get_info(info, BROADWELL_BCLK);
 }
 
 static int broadwell_get_count(struct udevice *dev)

arch/x86/cpu/intel_common/cpu.c

diff --git a/arch/x86/cpu/intel_common/cpu.c b/arch/x86/cpu/intel_common/cpu.c
index d0ac178..9357626 100644
--- a/arch/x86/cpu/intel_common/cpu.c
+++ b/arch/x86/cpu/intel_common/cpu.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <cpu.h>
 #include <dm.h>
 #include <errno.h>
 #include <asm/cpu_common.h>
@@ -110,3 +111,15 @@
 	/* Not reached */
 	return -EINVAL;
 }
+
+int cpu_intel_get_info(struct cpu_info *info, int bclk)
+{
+	msr_t msr;
+
+	msr = msr_read(IA32_PERF_CTL);
+	info->cpu_freq = ((msr.lo >> 8) & 0xff) * bclk * 1000000;
+	info->features = 1 << CPU_FEAT_L1_CACHE | 1 << CPU_FEAT_MMU |
+		1 << CPU_FEAT_UCODE | 1 << CPU_FEAT_DEVICE_ID;
+
+	return 0;
+}

arch/x86/cpu/ivybridge/model_206ax.c

diff --git a/arch/x86/cpu/ivybridge/model_206ax.c b/arch/x86/cpu/ivybridge/model_206ax.c
index 6edc3e2..68e78e9 100644
--- a/arch/x86/cpu/ivybridge/model_206ax.c
+++ b/arch/x86/cpu/ivybridge/model_206ax.c
@@ -12,6 +12,7 @@
 #include <fdtdec.h>
 #include <malloc.h>
 #include <asm/cpu.h>
+#include <asm/cpu_common.h>
 #include <asm/cpu_x86.h>
 #include <asm/msr.h>
 #include <asm/msr-index.h>
@@ -436,12 +437,7 @@
 
 static int model_206ax_get_info(struct udevice *dev, struct cpu_info *info)
 {
-	msr_t msr;
-
-	msr = msr_read(MSR_IA32_PERF_CTL);
-	info->cpu_freq = ((msr.lo >> 8) & 0xff) * SANDYBRIDGE_BCLK * 1000000;
-	info->features = 1 << CPU_FEAT_L1_CACHE | 1 << CPU_FEAT_MMU |
-		1 << CPU_FEAT_UCODE;
+	return cpu_intel_get_info(info, SANDYBRIDGE_BCLK);
 
 	return 0;
 }