[coreboot-gerrit] Change in coreboot[master]: soc/intel/skylake: Add config for cpu base clock frequency

[Aamir Bohra (Code Review)]

Aamir Bohra has uploaded this change for review. ( https://review.coreboot.org/20016

Change subject: soc/intel/skylake: Add config for cpu base clock frequency
......................................................................

soc/intel/skylake: Add config for cpu base clock frequency

Add config for cpu base clock frequency(Mhz) and replace current
refrence from soc/cpu.h with config option.

Change-Id: Idf8e85f7ae6d965fa987a4f5c4905503ee354d69
Signed-off-by: Aamir Bohra 
---
M src/soc/intel/skylake/Kconfig
M src/soc/intel/skylake/acpi.c
M src/soc/intel/skylake/bootblock/cpu.c
M src/soc/intel/skylake/cpu.c
M src/soc/intel/skylake/include/soc/cpu.h
M src/soc/intel/skylake/tsc_freq.c
6 files changed, 9 insertions(+), 9 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/16/20016/1

diff --git a/src/soc/intel/skylake/Kconfig b/src/soc/intel/skylake/Kconfig
index 80cdde6..067e833 100644
--- a/src/soc/intel/skylake/Kconfig
+++ b/src/soc/intel/skylake/Kconfig
@@ -323,4 +323,8 @@
    int
    default 2

+config CPU_BCLK_MHZ
+	int
+	default 100
+
 endif
diff --git a/src/soc/intel/skylake/acpi.c b/src/soc/intel/skylake/acpi.c
index 77fbb48..f9b39f2 100644
--- a/src/soc/intel/skylake/acpi.c
+++ b/src/soc/intel/skylake/acpi.c
@@ -410,7 +410,7 @@
    	/* Max Non-Turbo Ratio */
    	ratio_max = (msr.lo >> 8) & 0xff;
    }
-	clock_max = ratio_max * CPU_BCLK;
+	clock_max = ratio_max * CONFIG_CPU_BCLK_MHZ;

/* Calculate CPU TDP in mW */
    msr = rdmsr(MSR_PKG_POWER_SKU_UNIT);
@@ -474,7 +474,7 @@

/* Calculate power at this ratio */
    	power = calculate_power(power_max, ratio_max, ratio);
-		clock = ratio * CPU_BCLK;
+		clock = ratio * CONFIG_CPU_BCLK_MHZ;

acpigen_write_PSS_package(
    		clock,			/* MHz */
diff --git a/src/soc/intel/skylake/bootblock/cpu.c b/src/soc/intel/skylake/bootblock/cpu.c
index 040e847..23b4b18 100644
--- a/src/soc/intel/skylake/bootblock/cpu.c
+++ b/src/soc/intel/skylake/bootblock/cpu.c
@@ -138,5 +138,5 @@
    wrmsr(MSR_IA32_PERF_CTL, perf_ctl);

printk(BIOS_DEBUG, "CPU: frequency set to %d MHz\n",
-		((perf_ctl.lo >> 8) & 0xff) * CPU_BCLK);
+		((perf_ctl.lo >> 8) & 0xff) * CONFIG_CPU_BCLK_MHZ);
 }
diff --git a/src/soc/intel/skylake/cpu.c b/src/soc/intel/skylake/cpu.c
index 0572413..95d9ad9 100644
--- a/src/soc/intel/skylake/cpu.c
+++ b/src/soc/intel/skylake/cpu.c
@@ -320,7 +320,7 @@
    wrmsr(IA32_PERF_CTL, perf_ctl);

printk(BIOS_DEBUG, "cpu: frequency set to %d\n",
-	       ((perf_ctl.lo >> 8) & 0xff) * CPU_BCLK);
+	       ((perf_ctl.lo >> 8) & 0xff) * CONFIG_CPU_BCLK_MHZ);
 }

static void set_energy_perf_bias(u8 policy)
diff --git a/src/soc/intel/skylake/include/soc/cpu.h b/src/soc/intel/skylake/include/soc/cpu.h
index 9171172..f6803c9 100644
--- a/src/soc/intel/skylake/include/soc/cpu.h
+++ b/src/soc/intel/skylake/include/soc/cpu.h
@@ -34,9 +34,6 @@
 #define CPUID_KABYLAKE_HA0	0x506e8
 #define CPUID_KABYLAKE_HB0	0x906e9

-/* CPU bus clock is fixed at 100MHz */
-#define CPU_BCLK		100
-
 /* Latency times in units of 1024ns. */
 #define C_STATE_LATENCY_CONTROL_0_LIMIT	0x4e
 #define C_STATE_LATENCY_CONTROL_1_LIMIT	0x76
diff --git a/src/soc/intel/skylake/tsc_freq.c b/src/soc/intel/skylake/tsc_freq.c
index 9ebe3cb..8a4ff46 100644
--- a/src/soc/intel/skylake/tsc_freq.c
+++ b/src/soc/intel/skylake/tsc_freq.c
@@ -17,7 +17,6 @@
 #include <stdint.h>
 #include <cpu/x86/msr.h>
 #include <cpu/x86/tsc.h>
-#include <soc/cpu.h>
 #include <soc/msr.h>

unsigned long tsc_freq_mhz(void)
@@ -25,5 +24,5 @@
    msr_t platform_info;

platform_info = rdmsr(MSR_PLATFORM_INFO);
-	return CPU_BCLK * ((platform_info.lo >> 8) & 0xff);
+	return CONFIG_CPU_BCLK_MHZ * ((platform_info.lo >> 8) & 0xff);
 }