apollolake: update processor power limits configuration

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

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

Change-Id: I609744d165a53c8f91e42a67da1b972de00076a5
Signed-off-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41233
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

4 files changed, 23 insertions, 74 deletions

diff --git a/src/soc/intel/apollolake/Kconfig b/src/soc/intel/apollolake/Kconfig
index 9118b18af8..9323aed8ff 100644
--- a/src/soc/intel/apollolake/Kconfig
+++ b/src/soc/intel/apollolake/Kconfig
@@ -61,6 +61,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON
 	select SOC_INTEL_COMMON_ACPI_WAKE_SOURCE
 	select SOC_INTEL_COMMON_BLOCK
+	select SOC_INTEL_COMMON_BLOCK_POWER_LIMIT
 	select SOC_INTEL_COMMON_BLOCK_ACPI
 	select SOC_INTEL_COMMON_BLOCK_CHIP_CONFIG
 	select SOC_INTEL_COMMON_BLOCK_CPU
diff --git a/src/soc/intel/apollolake/chip.c b/src/soc/intel/apollolake/chip.c
index 058222ce39..cc190bae24 100644
--- a/src/soc/intel/apollolake/chip.c
+++ b/src/soc/intel/apollolake/chip.c
@@ -15,6 +15,7 @@
 #include <intelblocks/fast_spi.h>
 #include <intelblocks/msr.h>
 #include <intelblocks/p2sb.h>
+#include <intelblocks/power_limit.h>
 #include <intelblocks/xdci.h>
 #include <fsp/api.h>
 #include <fsp/util.h>
@@ -34,6 +35,7 @@
 #include <spi-generic.h>
 #include <timer.h>
 #include <soc/ramstage.h>
+#include <soc/soc_chip.h>
 
 #include "chip.h"
 
@@ -269,73 +271,6 @@ static void pcie_override_devicetree_after_silicon_init(void)
 	pcie_update_device_tree(PCH_DEVFN_PCIE5, 2);
 }
 
-/* Configure package power limits */
-static void set_power_limits(void)
-{
-	struct soc_intel_apollolake_config *cfg;
-	msr_t rapl_msr_reg, limit;
-	uint32_t power_unit;
-	uint32_t tdp, min_power, max_power;
-	uint32_t pl2_val;
-
-	cfg = config_of_soc();
-
-	if (CONFIG(APL_SKIP_SET_POWER_LIMITS)) {
-		printk(BIOS_INFO, "Skip the RAPL settings.\n");
-		return;
-	}
-
-	/* Get units */
-	rapl_msr_reg = rdmsr(MSR_PKG_POWER_SKU_UNIT);
-	power_unit = 1 << (rapl_msr_reg.lo & 0xf);
-
-	/* Get power defaults for this SKU */
-	rapl_msr_reg = rdmsr(MSR_PKG_POWER_SKU);
-	tdp = rapl_msr_reg.lo & PKG_POWER_LIMIT_MASK;
-	pl2_val = rapl_msr_reg.hi & PKG_POWER_LIMIT_MASK;
-	min_power = (rapl_msr_reg.lo >> 16) & PKG_POWER_LIMIT_MASK;
-	max_power = rapl_msr_reg.hi & PKG_POWER_LIMIT_MASK;
-
-	if (min_power > 0 && tdp < min_power)
-		tdp = min_power;
-
-	if (max_power > 0 && tdp > max_power)
-		tdp = max_power;
-
-	/* Set PL1 override value */
-	tdp = (cfg->tdp_pl1_override_mw == 0) ?
-		tdp : (cfg->tdp_pl1_override_mw * power_unit) / 1000;
-	/* Set PL2 override value */
-	pl2_val = (cfg->tdp_pl2_override_mw == 0) ?
-		pl2_val : (cfg->tdp_pl2_override_mw * power_unit) / 1000;
-
-	/* Set long term power limit to TDP */
-	limit.lo = tdp & PKG_POWER_LIMIT_MASK;
-	/* Set PL1 Pkg Power clamp bit */
-	limit.lo |= PKG_POWER_LIMIT_CLAMP;
-
-	limit.lo |= PKG_POWER_LIMIT_EN;
-	limit.lo |= (MB_POWER_LIMIT1_TIME_DEFAULT &
-		PKG_POWER_LIMIT_TIME_MASK) << PKG_POWER_LIMIT_TIME_SHIFT;
-
-	/* Set short term power limit PL2 */
-	limit.hi = pl2_val & PKG_POWER_LIMIT_MASK;
-	limit.hi |= PKG_POWER_LIMIT_EN;
-
-	/* Program package power limits in RAPL MSR */
-	wrmsr(MSR_PKG_POWER_LIMIT, limit);
-	printk(BIOS_INFO, "RAPL PL1 %d.%dW\n", tdp / power_unit,
-				100 * (tdp % power_unit) / power_unit);
-	printk(BIOS_INFO, "RAPL PL2 %d.%dW\n", pl2_val / power_unit,
-				100 * (pl2_val % power_unit) / power_unit);
-
-	/* Setting RAPL MMIO register for Power limits.
-	* RAPL driver is using MSR instead of MMIO.
-	* So, disabled LIMIT_EN bit for MMIO. */
-	MCHBAR32(MCHBAR_RAPL_PPL) = limit.lo & ~PKG_POWER_LIMIT_EN;
-	MCHBAR32(MCHBAR_RAPL_PPL + 4) =  limit.hi & ~PKG_POWER_LIMIT_EN;
-}
-
 /* Overwrites the SCI IRQ if another IRQ number is given by device tree. */
 static void set_sci_irq(void)
 {
@@ -355,6 +290,9 @@ static void set_sci_irq(void)
 
 static void soc_init(void *data)
 {
+	struct soc_power_limits_config *soc_config;
+	config_t *config;
+
 	/* Snapshot the current GPIO IRQ polarities. FSP is setting a
 	 * default policy that doesn't honor boards' requirements. */
 	itss_snapshot_irq_polarities(GPIO_IRQ_START, GPIO_IRQ_END);
@@ -384,8 +322,10 @@ static void soc_init(void *data)
 	/* Allocate ACPI NVS in CBMEM */
 	cbmem_add(CBMEM_ID_ACPI_GNVS, sizeof(struct global_nvs_t));
 
-	/* Set RAPL MSR for Package power limits*/
-	set_power_limits();
+	config = config_of_soc();
+	/* Set RAPL MSR for Package power limits */
+	soc_config = &config->power_limits_config;
+	set_power_limits(MOBILE_SKU_PL1_TIME_SEC, soc_config);
 
 	/*
 	* FSP-S routes SCI to IRQ 9. With the help of this function you can
diff --git a/src/soc/intel/apollolake/chip.h b/src/soc/intel/apollolake/chip.h
index 8c0a6d2d1a..ce446a063a 100644
--- a/src/soc/intel/apollolake/chip.h
+++ b/src/soc/intel/apollolake/chip.h
@@ -9,6 +9,7 @@
 #include <soc/gpe.h>
 #include <soc/gpio.h>
 #include <intelblocks/lpc_lib.h>
+#include <intelblocks/power_limit.h>
 #include <device/i2c_simple.h>
 #include <drivers/i2c/designware/dw_i2c.h>
 #include <soc/pm.h>
@@ -28,6 +29,9 @@ struct soc_intel_apollolake_config {
 	/* Common structure containing soc config data required by common code*/
 	struct soc_intel_common_config common_soc_config;
 
+	/* Common struct containing power limits configuration info */
+	struct soc_power_limits_config power_limits_config;
+
 	/*
 	 * Mapping from PCIe root port to CLKREQ input on the SOC. The SOC has
 	 * four CLKREQ inputs, but six root ports. Root ports without an
@@ -99,11 +103,6 @@ struct soc_intel_apollolake_config {
 	/* TCC activation offset value in degrees Celsius */
 	int tcc_offset;
 
-	/* PL1 override value in mW for APL */
-	uint16_t tdp_pl1_override_mw;
-	/* PL2 override value in mW for APL */
-	uint16_t tdp_pl2_override_mw;
-
 	/* Configure Audio clk gate and power gate
 	 * IOSF-SB port ID 92 offset 0x530 [5] and [3]
 	 */
diff --git a/src/soc/intel/apollolake/include/soc/msr.h b/src/soc/intel/apollolake/include/soc/msr.h
new file mode 100644
index 0000000000..cee11c29a8
--- /dev/null
+++ b/src/soc/intel/apollolake/include/soc/msr.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
+
+#ifndef _SOC_MSR_H_
+#define _SOC_MSR_H_
+
+#include <intelblocks/msr.h>
+
+#endif