soc/intel/common: add TCC activation functionality

This enables to configure the Thermal Control Circuit (TCC) activation
value to new value as tcc_offset in degree Celcius. It prevents any
abrupt thermal shutdown while running heavy workload. This helps to
take early thermal throttling action before CPU temperature reaches
maximum operating temperature TjMax value. Also, cleanup local functions
from previous intel soc specific code base like for apollolake, broadwell,
skylake and cannonlake.

BUG=None
BRANCH=None
TEST=Built for volteer platform and verified the MSR value.

Change-Id: I37dd878902b080602d70c5c3c906820613ea14a5
Signed-off-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41855
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

src/soc/intel/apollolake/romstage.c

@@ -73,23 +73,6 @@ static void soc_early_romstage_init(void)
 						P2SB_HPTC_ADDRESS_ENABLE);
 }
 
-/* Thermal throttle activation offset */
-static void configure_thermal_target(void)
-{
-	msr_t msr;
-	const config_t *conf = config_of_soc();
-
-	if (!conf->tcc_offset)
-		return;
-
-	msr = rdmsr(MSR_TEMPERATURE_TARGET);
-	/* Bits 27:24 */
-	msr.lo &= ~(TEMPERATURE_TCC_MASK << TEMPERATURE_TCC_SHIFT);
-	msr.lo |= (conf->tcc_offset & TEMPERATURE_TCC_MASK)
-		<< TEMPERATURE_TCC_SHIFT;
-	wrmsr(MSR_TEMPERATURE_TARGET, msr);
-}
-
 /*
  * Punit Initialization code. This all isn't documented, but
  * this is the recipe.
@@ -101,7 +84,7 @@ static bool punit_init(void)
 	struct stopwatch sw;
 
 	/* Thermal throttle activation offset */
-	configure_thermal_target();
+	configure_tcc_thermal_target();
 
 	/*
 	 * Software Core Disable Mask (P_CR_CORE_DISABLE_MASK_0_0_0_MCHBAR).

src/soc/intel/broadwell/cpu.c

@@ -290,22 +290,6 @@ static void configure_c_states(void)
 	wrmsr(MSR_C_STATE_LATENCY_CONTROL_5, msr);
 }
 
-static void configure_thermal_target(void)
-{
-	config_t *conf = config_of_soc();
-	msr_t msr;
-
-
-	/* Set TCC activation offset if supported */
-	msr = rdmsr(MSR_PLATFORM_INFO);
-	if ((msr.lo & (1 << 30)) && conf->tcc_offset) {
-		msr = rdmsr(MSR_TEMPERATURE_TARGET);
-		msr.lo &= ~(0xf << 24); /* Bits 27:24 */
-		msr.lo |= (conf->tcc_offset & 0xf) << 24;
-		wrmsr(MSR_TEMPERATURE_TARGET, msr);
-	}
-}
-
 static void configure_misc(void)
 {
 	msr_t msr;
@@ -430,7 +414,7 @@ static void cpu_core_init(struct device *cpu)
 	configure_misc();
 
 	/* Thermal throttle activation offset */
-	configure_thermal_target();
+	configure_tcc_thermal_target();
 
 	/* Enable Direct Cache Access */
 	configure_dca_cap();

src/soc/intel/cannonlake/cpu.c

@@ -155,25 +155,6 @@ static void configure_c_states(void)
 	wrmsr(MSR_C_STATE_LATENCY_CONTROL_5, msr);
 }
 
-static void configure_thermal_target(void)
-{
-	config_t *conf = config_of_soc();
-	msr_t msr;
-
-	/* Set TCC activation offset if supported */
-	msr = rdmsr(MSR_PLATFORM_INFO);
-	if ((msr.lo & (1 << 30)) && conf->tcc_offset) {
-		msr = rdmsr(MSR_TEMPERATURE_TARGET);
-		msr.lo &= ~(0xf << 24); /* Bits 27:24 */
-		msr.lo |= (conf->tcc_offset & 0xf) << 24;
-		wrmsr(MSR_TEMPERATURE_TARGET, msr);
-	}
-	msr = rdmsr(MSR_TEMPERATURE_TARGET);
-	msr.lo &= ~0x7f; /* Bits 6:0 */
-	msr.lo |= 0xe6; /* setting 100ms thermal time window */
-	wrmsr(MSR_TEMPERATURE_TARGET, msr);
-}
-
 /*
  * The emulated ACPI timer allows replacing of the ACPI timer
  * (PM1_TMR) to have no impart on the system.
@@ -282,7 +263,7 @@ void soc_init_cpus(struct bus *cpu_bus)
 		printk(BIOS_ERR, "MP initialization failure.\n");
 
 	/* Thermal throttle activation offset */
-	configure_thermal_target();
+	configure_tcc_thermal_target();
 }
 
 int soc_skip_ucode_update(u32 current_patch_id, u32 new_patch_id)

src/soc/intel/common/block/cpu/cpulib.c

@@ -8,6 +8,7 @@
 #include <intelblocks/cpulib.h>
 #include <intelblocks/fast_spi.h>
 #include <intelblocks/msr.h>
+#include <soc/soc_chip.h>
 #include <stdint.h>
 
 /*
@@ -254,6 +255,26 @@ uint32_t cpu_get_max_ratio(void)
 	return ratio_max;
 }
 
+void configure_tcc_thermal_target(void)
+{
+	const config_t *conf = config_of_soc();
+	msr_t msr;
+
+	/* Set TCC activation offset */
+	msr = rdmsr(MSR_PLATFORM_INFO);
+	if ((msr.lo & BIT(30)) && conf->tcc_offset) {
+		msr = rdmsr(MSR_TEMPERATURE_TARGET);
+		msr.lo &= ~(0xf << 24);
+		msr.lo |= (conf->tcc_offset & 0xf) << 24;
+		wrmsr(MSR_TEMPERATURE_TARGET, msr);
+	}
+	msr = rdmsr(MSR_TEMPERATURE_TARGET);
+	/* Time Window Tau Bits [6:0] */
+	msr.lo &= ~0x7f;
+	msr.lo |= 0xe6; /* setting 100ms thermal time window */
+	wrmsr(MSR_TEMPERATURE_TARGET, msr);
+}
+
 uint32_t cpu_get_bus_clock(void)
 {
 	/* CPU bus clock is set by default here to 100MHz.

src/soc/intel/common/block/include/intelblocks/cpulib.h

@@ -133,6 +133,9 @@ uint32_t cpu_get_min_ratio(void);
  */
 uint32_t cpu_get_max_ratio(void);
 
+/* Thermal throttle activation offset */
+void configure_tcc_thermal_target(void);
+
 /*
  * cpu_get_power_max calculates CPU TDP in mW
  */

src/soc/intel/denverton_ns/chip.h

@@ -56,6 +56,9 @@ struct soc_intel_denverton_ns_config {
 	uint32_t ipc1;
 	uint32_t ipc2;
 	uint32_t ipc3;
+
+	/* TCC activation offset */
+	uint32_t tcc_offset;
 };
 
 typedef struct soc_intel_denverton_ns_config config_t;

src/soc/intel/denverton_ns/include/soc/soc_chip.h

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _SOC_DENVERTON_NS_SOC_CHIP_H_
+#define _SOC_DENVERTON_NS_SOC_CHIP_H_
+
+#include "../../chip.h"
+
+#endif /* _SOC_DENVERTON_NS_SOC_CHIP_H_ */

src/soc/intel/skylake/cpu.c

@@ -27,26 +27,6 @@
 
 #include "chip.h"
 
-static void configure_thermal_target(void)
-{
-	config_t *conf = config_of_soc();
-	msr_t msr;
-
-
-	/* Set TCC activation offset if supported */
-	msr = rdmsr(MSR_PLATFORM_INFO);
-	if ((msr.lo & (1 << 30)) && conf->tcc_offset) {
-		msr = rdmsr(MSR_TEMPERATURE_TARGET);
-		msr.lo &= ~(0xf << 24); /* Bits 27:24 */
-		msr.lo |= (conf->tcc_offset & 0xf) << 24;
-		wrmsr(MSR_TEMPERATURE_TARGET, msr);
-	}
-	msr = rdmsr(MSR_TEMPERATURE_TARGET);
-	msr.lo &= ~0x7f; /* Bits 6:0 */
-	msr.lo |= 0xe6; /* setting 100ms thermal time window */
-	wrmsr(MSR_TEMPERATURE_TARGET, msr);
-}
-
 static void configure_isst(void)
 {
 	config_t *conf = config_of_soc();
@@ -333,7 +313,7 @@ void soc_init_cpus(struct bus *cpu_bus)
 		printk(BIOS_ERR, "MP initialization failure.\n");
 
 	/* Thermal throttle activation offset */
-	configure_thermal_target();
+	configure_tcc_thermal_target();
 }
 
 int soc_skip_ucode_update(u32 current_patch_id, u32 new_patch_id)

src/soc/intel/xeon_sp/cpx/chip.h

@@ -67,6 +67,9 @@ struct soc_intel_xeon_sp_cpx_config {
 	uint32_t gen2_dec;
 	uint32_t gen3_dec;
 	uint32_t gen4_dec;
+
+	/* TCC activation offset */
+	uint32_t tcc_offset;
 };
 
 typedef struct soc_intel_xeon_sp_cpx_config config_t;

src/soc/intel/xeon_sp/include/soc/soc_chip.h

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _SOC_XEON_SP_SOC_CHIP_H_
+#define _SOC_XEON_SP_SOC_CHIP_H_
+
+#include "../chip.h"
+
+#endif /* _SOC_XEON_SP_SOC_CHIP_H_ */

src/soc/intel/xeon_sp/skx/chip.h

@@ -69,6 +69,9 @@ struct soc_intel_xeon_sp_skx_config {
 	uint32_t gen2_dec;
 	uint32_t gen3_dec;
 	uint32_t gen4_dec;
+
+	/* TCC activation offset */
+	uint32_t tcc_offset;
 };
 
 typedef struct soc_intel_xeon_sp_skx_config config_t;