skylake: update processor power limits configuration

Update processor power limit configuration parameters based on
common code base support for Intel Skylake SoC based platforms.

BRANCH=None
BUG=None
TEST=Built and tested on nami system

Change-Id: Idc82f3d2f805b92fb3005d2f49098e55cb142e45
Signed-off-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41238
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

6 files changed, 19 insertions, 217 deletions

diff --git a/src/soc/intel/skylake/Kconfig b/src/soc/intel/skylake/Kconfig
index 0a5daeaa82..55437f356e 100644
--- a/src/soc/intel/skylake/Kconfig
+++ b/src/soc/intel/skylake/Kconfig
@@ -73,6 +73,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_PCH_BASE
 	select SOC_INTEL_COMMON_NHLT
 	select SOC_INTEL_COMMON_RESET
+	select SOC_INTEL_COMMON_BLOCK_POWER_LIMIT
 	select SSE2
 	select SUPPORT_CPU_UCODE_IN_CBFS
 	select TSC_MONOTONIC_TIMER
diff --git a/src/soc/intel/skylake/chip.c b/src/soc/intel/skylake/chip.c
index ce566cf7b5..b14bb72a7b 100644
--- a/src/soc/intel/skylake/chip.c
+++ b/src/soc/intel/skylake/chip.c
@@ -14,6 +14,7 @@
 #include <intelblocks/lpc_lib.h>
 #include <intelblocks/mp_init.h>
 #include <intelblocks/pcie_rp.h>
+#include <intelblocks/power_limit.h>
 #include <intelblocks/xdci.h>
 #include <intelblocks/p2sb.h>
 #include <intelpch/lockdown.h>
@@ -124,10 +125,14 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd)
 	config = config_of_soc();
 
 	mainboard_silicon_init_params(params);
+
+	struct soc_power_limits_config *soc_confg;
+	config_t *confg = config_of_soc();
+	soc_confg = &confg->power_limits_config;
 	/* Set PsysPmax if it is available from DT */
-	if (config->psys_pmax) {
+	if (soc_confg->psys_pmax) {
 		/* PsysPmax is in unit of 1/8 Watt */
-		tconfig->PsysPmax = config->psys_pmax * 8;
+		tconfig->PsysPmax = soc_confg->psys_pmax * 8;
 		printk(BIOS_DEBUG, "psys_pmax = %d\n", tconfig->PsysPmax);
 	}
 
diff --git a/src/soc/intel/skylake/chip.h b/src/soc/intel/skylake/chip.h
index eb6cf9d7bc..92cd1bad85 100644
--- a/src/soc/intel/skylake/chip.h
+++ b/src/soc/intel/skylake/chip.h
@@ -11,6 +11,7 @@
 #include <intelblocks/cfg.h>
 #include <intelblocks/gspi.h>
 #include <intelblocks/lpc_lib.h>
+#include <intelblocks/power_limit.h>
 #include <stdint.h>
 #include <soc/gpe.h>
 #include <soc/gpio.h>
@@ -33,6 +34,9 @@ struct soc_intel_skylake_config {
 	/* Common struct containing soc config data required by common code */
 	struct soc_intel_common_config common_soc_config;
 
+	/* Common struct containing power limits configuration information */
+	struct soc_power_limits_config power_limits_config;
+
 	/* IGD panel configuration */
 	unsigned int gpu_pp_up_delay_ms;
 	unsigned int gpu_pp_down_delay_ms;
@@ -100,27 +104,6 @@ struct soc_intel_skylake_config {
 	/* Package PL4 power limit in Watts */
 	u32 PowerLimit4;
 
-	/* PL2 Override value in Watts */
-	u32 tdp_pl2_override;
-	/* PL1 Override value in Watts */
-	u32 tdp_pl1_override;
-
-	/* SysPL2 Value in Watts */
-	u32 tdp_psyspl2;
-
-	/* SysPL3 Value in Watts */
-	u32 tdp_psyspl3;
-	/* SysPL3 window size */
-	u32 tdp_psyspl3_time;
-	/* SysPL3 duty cycle */
-	u32 tdp_psyspl3_dutycycle;
-
-	/* PL4 Value in Watts */
-	u32 tdp_pl4;
-
-	/* Estimated maximum platform power in Watts */
-	u16 psys_pmax;
-
 	/* Whether to ignore VT-d support of the SKU */
 	int ignore_vtd;
 
diff --git a/src/soc/intel/skylake/cpu.c b/src/soc/intel/skylake/cpu.c
index 1aba7f6a47..28572e5948 100644
--- a/src/soc/intel/skylake/cpu.c
+++ b/src/soc/intel/skylake/cpu.c
@@ -30,196 +30,6 @@
 
 #include "chip.h"
 
-/* Convert time in seconds to POWER_LIMIT_1_TIME MSR value */
-static const u8 power_limit_time_sec_to_msr[] = {
-	[0]   = 0x00,
-	[1]   = 0x0a,
-	[2]   = 0x0b,
-	[3]   = 0x4b,
-	[4]   = 0x0c,
-	[5]   = 0x2c,
-	[6]   = 0x4c,
-	[7]   = 0x6c,
-	[8]   = 0x0d,
-	[10]  = 0x2d,
-	[12]  = 0x4d,
-	[14]  = 0x6d,
-	[16]  = 0x0e,
-	[20]  = 0x2e,
-	[24]  = 0x4e,
-	[28]  = 0x6e,
-	[32]  = 0x0f,
-	[40]  = 0x2f,
-	[48]  = 0x4f,
-	[56]  = 0x6f,
-	[64]  = 0x10,
-	[80]  = 0x30,
-	[96]  = 0x50,
-	[112] = 0x70,
-	[128] = 0x11,
-};
-
-/* Convert POWER_LIMIT_1_TIME MSR value to seconds */
-static const u8 power_limit_time_msr_to_sec[] = {
-	[0x00] = 0,
-	[0x0a] = 1,
-	[0x0b] = 2,
-	[0x4b] = 3,
-	[0x0c] = 4,
-	[0x2c] = 5,
-	[0x4c] = 6,
-	[0x6c] = 7,
-	[0x0d] = 8,
-	[0x2d] = 10,
-	[0x4d] = 12,
-	[0x6d] = 14,
-	[0x0e] = 16,
-	[0x2e] = 20,
-	[0x4e] = 24,
-	[0x6e] = 28,
-	[0x0f] = 32,
-	[0x2f] = 40,
-	[0x4f] = 48,
-	[0x6f] = 56,
-	[0x10] = 64,
-	[0x30] = 80,
-	[0x50] = 96,
-	[0x70] = 112,
-	[0x11] = 128,
-};
-
-/*
- * Configure processor power limits if possible
- * This must be done AFTER set of BIOS_RESET_CPL
- */
-void set_power_limits(u8 power_limit_1_time)
-{
-	msr_t msr = rdmsr(MSR_PLATFORM_INFO);
-	msr_t limit;
-	unsigned int power_unit;
-	unsigned int tdp, min_power, max_power, max_time, tdp_pl2, tdp_pl1;
-	u8 power_limit_1_val;
-
-	config_t *conf = config_of_soc();
-
-	if (power_limit_1_time >= ARRAY_SIZE(power_limit_time_sec_to_msr))
-		power_limit_1_time = ARRAY_SIZE(power_limit_time_sec_to_msr) - 1;
-
-	if (!(msr.lo & PLATFORM_INFO_SET_TDP))
-		return;
-
-	/* Get units */
-	msr = rdmsr(MSR_PKG_POWER_SKU_UNIT);
-	power_unit = 1 << (msr.lo & 0xf);
-
-	/* Get power defaults for this SKU */
-	msr = rdmsr(MSR_PKG_POWER_SKU);
-	tdp = msr.lo & 0x7fff;
-	min_power = (msr.lo >> 16) & 0x7fff;
-	max_power = msr.hi & 0x7fff;
-	max_time = (msr.hi >> 16) & 0x7f;
-
-	printk(BIOS_DEBUG, "CPU TDP: %u Watts\n", tdp / power_unit);
-
-	if (power_limit_time_msr_to_sec[max_time] > power_limit_1_time)
-		power_limit_1_time = power_limit_time_msr_to_sec[max_time];
-
-	if (min_power > 0 && tdp < min_power)
-		tdp = min_power;
-
-	if (max_power > 0 && tdp > max_power)
-		tdp = max_power;
-
-	power_limit_1_val = power_limit_time_sec_to_msr[power_limit_1_time];
-
-	/* Set long term power limit to TDP */
-	limit.lo = 0;
-	tdp_pl1 = ((conf->tdp_pl1_override == 0) ?
-		tdp : (conf->tdp_pl1_override * power_unit));
-	limit.lo |= (tdp_pl1 & PKG_POWER_LIMIT_MASK);
-
-	/* Set PL1 Pkg Power clamp bit */
-	limit.lo |= PKG_POWER_LIMIT_CLAMP;
-
-	limit.lo |= PKG_POWER_LIMIT_EN;
-	limit.lo |= (power_limit_1_val & PKG_POWER_LIMIT_TIME_MASK) <<
-		PKG_POWER_LIMIT_TIME_SHIFT;
-
-	/* Set short term power limit to 1.25 * TDP if no config given */
-	limit.hi = 0;
-	tdp_pl2 = (conf->tdp_pl2_override == 0) ?
-		(tdp * 125) / 100 : (conf->tdp_pl2_override * power_unit);
-	printk(BIOS_DEBUG, "CPU PL2 = %u Watts\n", tdp_pl2 / power_unit);
-	limit.hi |= (tdp_pl2) & PKG_POWER_LIMIT_MASK;
-	limit.hi |= PKG_POWER_LIMIT_CLAMP;
-	limit.hi |= PKG_POWER_LIMIT_EN;
-
-	/* Power limit 2 time is only programmable on server SKU */
-	wrmsr(MSR_PKG_POWER_LIMIT, limit);
-
-	/* Set PL2 power limit values in MCHBAR and disable PL1 */
-	MCHBAR32(MCH_PKG_POWER_LIMIT_LO) = limit.lo & (~(PKG_POWER_LIMIT_EN));
-	MCHBAR32(MCH_PKG_POWER_LIMIT_HI) = limit.hi;
-
-	/* Set PsysPl2 */
-	if (conf->tdp_psyspl2) {
-		limit = rdmsr(MSR_PLATFORM_POWER_LIMIT);
-		limit.hi = 0;
-		printk(BIOS_DEBUG, "CPU PsysPL2 = %u Watts\n",
-			conf->tdp_psyspl2);
-		limit.hi |= (conf->tdp_psyspl2 * power_unit) &
-			PKG_POWER_LIMIT_MASK;
-		limit.hi |= PKG_POWER_LIMIT_CLAMP;
-		limit.hi |= PKG_POWER_LIMIT_EN;
-
-		wrmsr(MSR_PLATFORM_POWER_LIMIT, limit);
-	}
-
-	/* Set PsysPl3 */
-	if (conf->tdp_psyspl3) {
-		limit = rdmsr(MSR_PL3_CONTROL);
-		limit.lo = 0;
-		printk(BIOS_DEBUG, "CPU PsysPL3 = %u Watts\n",
-		       conf->tdp_psyspl3);
-		limit.lo |= (conf->tdp_psyspl3 * power_unit) &
-			PKG_POWER_LIMIT_MASK;
-		/* Enable PsysPl3 */
-		limit.lo |= PKG_POWER_LIMIT_EN;
-		/* set PsysPl3 time window */
-		limit.lo |= (conf->tdp_psyspl3_time &
-			     PKG_POWER_LIMIT_TIME_MASK) <<
-			PKG_POWER_LIMIT_TIME_SHIFT;
-		/* set PsysPl3  duty cycle */
-		limit.lo |= (conf->tdp_psyspl3_dutycycle &
-			     PKG_POWER_LIMIT_DUTYCYCLE_MASK) <<
-			PKG_POWER_LIMIT_DUTYCYCLE_SHIFT;
-		wrmsr(MSR_PL3_CONTROL, limit);
-	}
-
-	/* Set Pl4 */
-	if (conf->tdp_pl4) {
-		limit = rdmsr(MSR_VR_CURRENT_CONFIG);
-		limit.lo = 0;
-		printk(BIOS_DEBUG, "CPU PL4 = %u Watts\n",
-		       conf->tdp_pl4);
-		limit.lo |= (conf->tdp_pl4 * power_unit) &
-			PKG_POWER_LIMIT_MASK;
-		wrmsr(MSR_VR_CURRENT_CONFIG, limit);
-	}
-
-	/* Set DDR RAPL power limit by copying from MMIO to MSR */
-	msr.lo = MCHBAR32(MCH_DDR_POWER_LIMIT_LO);
-	msr.hi = MCHBAR32(MCH_DDR_POWER_LIMIT_HI);
-	wrmsr(MSR_DDR_RAPL_LIMIT, msr);
-
-	/* Use nominal TDP values for CPUs with configurable TDP */
-	if (cpu_config_tdp_levels()) {
-		limit.hi = 0;
-		limit.lo = cpu_get_tdp_nominal_ratio();
-		wrmsr(MSR_TURBO_ACTIVATION_RATIO, limit);
-	}
-}
-
 static void configure_thermal_target(void)
 {
 	config_t *conf = config_of_soc();
diff --git a/src/soc/intel/skylake/include/soc/cpu.h b/src/soc/intel/skylake/include/soc/cpu.h
index 43710b6b98..740b3d3fb0 100644
--- a/src/soc/intel/skylake/include/soc/cpu.h
+++ b/src/soc/intel/skylake/include/soc/cpu.h
@@ -34,9 +34,6 @@
 	C_STATE_LATENCY_MICRO_SECONDS(C_STATE_LATENCY_CONTROL_ ##reg## _LIMIT, \
 				      (IRTL_1024_NS >> 10))
 
-/* Configure power limits for turbo mode */
-void set_power_limits(u8 power_limit_1_time);
-
 /* CPU identification */
 u32 cpu_family_model(void);
 u32 cpu_stepping(void);
diff --git a/src/soc/intel/skylake/systemagent.c b/src/soc/intel/skylake/systemagent.c
index a4d7330a47..8e58bf6669 100644
--- a/src/soc/intel/skylake/systemagent.c
+++ b/src/soc/intel/skylake/systemagent.c
@@ -4,6 +4,7 @@
 #include <delay.h>
 #include <device/device.h>
 #include <device/pci_ops.h>
+#include <intelblocks/power_limit.h>
 #include <intelblocks/systemagent.h>
 #include <soc/cpu.h>
 #include <soc/iomap.h>
@@ -60,6 +61,9 @@ void soc_add_fixed_mmio_resources(struct device *dev, int *index)
  */
 void soc_systemagent_init(struct device *dev)
 {
+	struct soc_power_limits_config *soc_config;
+	config_t *config;
+
 	/* Enable Power Aware Interrupt Routing */
 	enable_power_aware_intr();
 
@@ -68,7 +72,9 @@ void soc_systemagent_init(struct device *dev)
 
 	/* Configure turbo power limits 1ms after reset complete bit */
 	mdelay(1);
-	set_power_limits(28);
+	config = config_of_soc();
+	soc_config = &config->power_limits_config;
+	set_power_limits(MOBILE_SKU_PL1_TIME_SEC, soc_config);
 }
 
 int soc_get_uncore_prmmr_base_and_mask(uint64_t *prmrr_base,