cannonlake: update processor power limits configuration
Update processor power limit configuration parameters based on
common code base support for Intel Cannonlake SoC based platforms.
BRANCH=None
BUG=None
TEST=Built and tested on drallion system
Change-Id: Iac6e6f81343fcd769619e9d7ac339430966834f6
Signed-off-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41235
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/src/soc/intel/cannonlake/Kconfig b/src/soc/intel/cannonlake/Kconfig
index 6a86576..7a56d0d 100644
--- a/src/soc/intel/cannonlake/Kconfig
+++ b/src/soc/intel/cannonlake/Kconfig
@@ -103,6 +103,7 @@
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/cannonlake/chip.h b/src/soc/intel/cannonlake/chip.h
index f6ec7ce..a30f732 100644
--- a/src/soc/intel/cannonlake/chip.h
+++ b/src/soc/intel/cannonlake/chip.h
@@ -8,6 +8,7 @@
#include <intelblocks/gpio.h>
#include <intelblocks/gspi.h>
#include <intelblocks/lpc_lib.h>
+#include <intelblocks/power_limit.h>
#include <stdint.h>
#include <soc/gpio.h>
#include <soc/pch.h>
@@ -32,6 +33,9 @@
/* 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;
+
/* Gpio group routed to each dword of the GPE0 block. Values are
* of the form GPP_[A:G] or GPD. */
uint8_t gpe0_dw0; /* GPE0_31_0 STS/EN */
@@ -231,23 +235,6 @@
/* Enables support for Teton Glacier hybrid storage device */
uint8_t TetonGlacierMode;
- /* PL1 Override value in Watts */
- uint32_t tdp_pl1_override;
- /* PL2 Override value in Watts */
- uint32_t tdp_pl2_override;
- /* SysPL2 Value in Watts */
- uint32_t tdp_psyspl2;
- /* SysPL3 Value in Watts */
- uint32_t tdp_psyspl3;
- /* SysPL3 window size */
- uint32_t tdp_psyspl3_time;
- /* SysPL3 duty cycle */
- uint32_t tdp_psyspl3_dutycycle;
- /* PL4 Value in Watts */
- uint32_t tdp_pl4;
- /* Estimated maximum platform power in Watts */
- uint16_t psys_pmax;
-
/* Intel Speed Shift Technology */
uint8_t speed_shift_enable;
/* Enable VR specific mailbox command
diff --git a/src/soc/intel/cannonlake/cpu.c b/src/soc/intel/cannonlake/cpu.c
index 2f1a080..5b329ee 100644
--- a/src/soc/intel/cannonlake/cpu.c
+++ b/src/soc/intel/cannonlake/cpu.c
@@ -22,196 +22,6 @@
#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 soc_fsp_load(void)
{
fsps_load(romstage_handoff_is_resume());
diff --git a/src/soc/intel/cannonlake/fsp_params.c b/src/soc/intel/cannonlake/fsp_params.c
index b7e9ad8..8788838 100644
--- a/src/soc/intel/cannonlake/fsp_params.c
+++ b/src/soc/intel/cannonlake/fsp_params.c
@@ -7,6 +7,7 @@
#include <fsp/api.h>
#include <fsp/util.h>
#include <intelblocks/lpss.h>
+#include <intelblocks/power_limit.h>
#include <intelblocks/xdci.h>
#include <intelpch/lockdown.h>
#include <soc/intel/common/vbt.h>
@@ -152,11 +153,13 @@
mainboard_silicon_init_params(params);
+ const struct soc_power_limits_config *soc_config;
+ soc_config = &config->power_limits_config;
/* Set PsysPmax if it is available from DT */
- if (config->psys_pmax) {
- printk(BIOS_DEBUG, "psys_pmax = %dW\n", config->psys_pmax);
+ if (soc_config->psys_pmax) {
+ printk(BIOS_DEBUG, "psys_pmax = %dW\n", soc_config->psys_pmax);
/* PsysPmax is in unit of 1/8 Watt */
- tconfig->PsysPmax = config->psys_pmax * 8;
+ tconfig->PsysPmax = soc_config->psys_pmax * 8;
}
/* Unlock upper 8 bytes of RTC RAM */
diff --git a/src/soc/intel/cannonlake/include/soc/cpu.h b/src/soc/intel/cannonlake/include/soc/cpu.h
index ea30755..b356d3a9 100644
--- a/src/soc/intel/cannonlake/include/soc/cpu.h
+++ b/src/soc/intel/cannonlake/include/soc/cpu.h
@@ -31,7 +31,4 @@
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);
-
#endif
diff --git a/src/soc/intel/cannonlake/systemagent.c b/src/soc/intel/cannonlake/systemagent.c
index a041c0e..c225651 100644
--- a/src/soc/intel/cannonlake/systemagent.c
+++ b/src/soc/intel/cannonlake/systemagent.c
@@ -4,6 +4,7 @@
#include <delay.h>
#include <device/pci.h>
#include <device/pci_ops.h>
+#include <intelblocks/power_limit.h>
#include <intelblocks/systemagent.h>
#include <soc/cpu.h>
#include <soc/iomap.h>
@@ -57,6 +58,9 @@
*/
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();
@@ -65,5 +69,7 @@
/* 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);
}