diff --git a/src/soc/intel/alderlake/cpu.c b/src/soc/intel/alderlake/cpu.c index 39a42651bd..9fab277781 100644 --- a/src/soc/intel/alderlake/cpu.c +++ b/src/soc/intel/alderlake/cpu.c @@ -23,7 +23,6 @@ #include #include #include -#include #include static void soc_fsp_load(void) @@ -62,25 +61,6 @@ static void configure_misc(void) wrmsr(MSR_POWER_CTL, msr); } -static void enable_pm_timer_emulation(void) -{ - msr_t msr; - - if (!CONFIG_CPU_XTAL_HZ) - return; - - /* - * The derived frequency is calculated as follows: - * (clock * msr[63:32]) >> 32 = target frequency. - * Back solve the multiplier so the 3.579545MHz ACPI timer frequency is used. - */ - msr.hi = (3579545ULL << 32) / CONFIG_CPU_XTAL_HZ; - /* Set PM1 timer IO port and enable */ - msr.lo = (EMULATE_DELAY_VALUE << EMULATE_DELAY_OFFSET_VALUE) | - EMULATE_PM_TMR_EN | (ACPI_BASE_ADDRESS + PM1_TMR); - wrmsr(MSR_EMULATE_PM_TIMER, msr); -} - /* All CPUs including BSP will run the following function. */ void soc_core_init(struct device *cpu) { @@ -97,7 +77,6 @@ void soc_core_init(struct device *cpu) /* Configure Enhanced SpeedStep and Thermal Sensors */ configure_misc(); - /* Enable PM timer emulation */ enable_pm_timer_emulation(); /* Enable Direct Cache Access */ diff --git a/src/soc/intel/apollolake/Makefile.inc b/src/soc/intel/apollolake/Makefile.inc index 79fab1a9d1..64889e56f9 100644 --- a/src/soc/intel/apollolake/Makefile.inc +++ b/src/soc/intel/apollolake/Makefile.inc @@ -10,6 +10,7 @@ subdirs-y += ../../../cpu/x86/tsc subdirs-y += ../../../cpu/x86/cache bootblock-y += bootblock/bootblock.c +bootblock-y += ../common/block/cpu/pm_timer_emulation.c bootblock-$(CONFIG_FSP_CAR) += fspcar.c bootblock-y += car.c bootblock-y += heci.c diff --git a/src/soc/intel/apollolake/include/soc/pm.h b/src/soc/intel/apollolake/include/soc/pm.h index aaf62583e6..748f76adba 100644 --- a/src/soc/intel/apollolake/include/soc/pm.h +++ b/src/soc/intel/apollolake/include/soc/pm.h @@ -234,8 +234,6 @@ struct chipset_power_state { void pch_log_state(void); -void enable_pm_timer_emulation(void); - /* STM Support */ uint16_t get_pmbase(void); diff --git a/src/soc/intel/apollolake/pmutil.c b/src/soc/intel/apollolake/pmutil.c index e0de93eae4..6e96b57a07 100644 --- a/src/soc/intel/apollolake/pmutil.c +++ b/src/soc/intel/apollolake/pmutil.c @@ -178,24 +178,6 @@ int soc_prev_sleep_state(const struct chipset_power_state *ps, return prev_sleep_state; } -void enable_pm_timer_emulation(void) -{ - msr_t msr; - - if (!CONFIG_CPU_XTAL_HZ) - return; - - /* - * The derived frequency is calculated as follows: - * (clock * msr[63:32]) >> 32 = target frequency. - * Back solve the multiplier so the 3.579545MHz ACPI timer frequency is used. - */ - msr.hi = (3579545ULL << 32) / CONFIG_CPU_XTAL_HZ; - /* Set PM1 timer IO port and enable */ - msr.lo = EMULATE_PM_TMR_EN | (ACPI_BASE_ADDRESS + R_ACPI_PM1_TMR); - wrmsr(MSR_EMULATE_PM_TIMER, msr); -} - static int rtc_failed(uint32_t gen_pmcon1) { return !!(gen_pmcon1 & RPS); diff --git a/src/soc/intel/cannonlake/cpu.c b/src/soc/intel/cannonlake/cpu.c index 20da942f84..61b19894eb 100644 --- a/src/soc/intel/cannonlake/cpu.c +++ b/src/soc/intel/cannonlake/cpu.c @@ -14,7 +14,6 @@ #include #include #include -#include #include #include #include @@ -58,29 +57,6 @@ static void configure_misc(void) wrmsr(MSR_POWER_CTL, msr); } -/* - * The emulated ACPI timer allows replacing of the ACPI timer - * (PM1_TMR) to have no impart on the system. - */ -static void enable_pm_timer_emulation(void) -{ - msr_t msr; - - if (!CONFIG_CPU_XTAL_HZ) - return; - - /* - * The derived frequency is calculated as follows: - * (clock * msr[63:32]) >> 32 = target frequency. - * Back solve the multiplier so the 3.579545MHz ACPI timer frequency is used. - */ - msr.hi = (3579545ULL << 32) / CONFIG_CPU_XTAL_HZ; - /* Set PM1 timer IO port and enable */ - msr.lo = (EMULATE_DELAY_VALUE << EMULATE_DELAY_OFFSET_VALUE) | - EMULATE_PM_TMR_EN | (ACPI_BASE_ADDRESS + PM1_TMR); - wrmsr(MSR_EMULATE_PM_TIMER, msr); -} - static void configure_c_states(void) { msr_t msr; @@ -135,7 +111,6 @@ void soc_core_init(struct device *cpu) set_aesni_lock(); - /* Enable ACPI Timer Emulation via MSR 0x121 */ enable_pm_timer_emulation(); /* Enable Direct Cache Access */ diff --git a/src/soc/intel/common/block/cpu/Makefile.inc b/src/soc/intel/common/block/cpu/Makefile.inc index deddb67a16..7692076375 100644 --- a/src/soc/intel/common/block/cpu/Makefile.inc +++ b/src/soc/intel/common/block/cpu/Makefile.inc @@ -11,3 +11,4 @@ bootblock-$(CONFIG_SOC_INTEL_COMMON_BLOCK_CPU) += cpulib.c romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_CPU) += cpulib.c ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_CPU) += cpulib.c ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_CPU_MPINIT) += mp_init.c +ramstage-$(CONFIG_CPU_SUPPORTS_PM_TIMER_EMULATION) += pm_timer_emulation.c diff --git a/src/soc/intel/common/block/cpu/pm_timer_emulation.c b/src/soc/intel/common/block/cpu/pm_timer_emulation.c new file mode 100644 index 0000000000..8f56da54c5 --- /dev/null +++ b/src/soc/intel/common/block/cpu/pm_timer_emulation.c @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include +#include +#include +#include +#include + +void enable_pm_timer_emulation(void) +{ + msr_t msr; + + if (!CONFIG_CPU_XTAL_HZ) + return; + + /* + * The derived frequency is calculated as follows: + * (clock * msr[63:32]) >> 32 = target frequency. + * Back solve the multiplier so the 3.579545MHz ACPI timer frequency is used. + */ + msr.hi = (3579545ULL << 32) / CONFIG_CPU_XTAL_HZ; + /* Set PM1 timer IO port and enable */ + msr.lo = (EMULATE_DELAY_VALUE << EMULATE_DELAY_OFFSET_VALUE) | + EMULATE_PM_TMR_EN | (ACPI_BASE_ADDRESS + PM1_TMR); + wrmsr(MSR_EMULATE_PM_TIMER, msr); +} diff --git a/src/soc/intel/common/block/include/intelblocks/cpulib.h b/src/soc/intel/common/block/include/intelblocks/cpulib.h index d2b00efb2f..4dfbef48f6 100644 --- a/src/soc/intel/common/block/include/intelblocks/cpulib.h +++ b/src/soc/intel/common/block/include/intelblocks/cpulib.h @@ -156,4 +156,10 @@ void cpu_lt_lock_memory(void *unused); /* Get a supported PRMRR size in bytes with respect to users choice */ int get_valid_prmrr_size(void); +/* + * Enable the emulated ACPI timer in case it's not available or to allow + * disabling the PM ACPI timer (PM1_TMR) for power saving. + */ +void enable_pm_timer_emulation(void); + #endif /* SOC_INTEL_COMMON_BLOCK_CPULIB_H */ diff --git a/src/soc/intel/elkhartlake/cpu.c b/src/soc/intel/elkhartlake/cpu.c index 720a295e15..d0fa019ef8 100644 --- a/src/soc/intel/elkhartlake/cpu.c +++ b/src/soc/intel/elkhartlake/cpu.c @@ -17,7 +17,6 @@ #include #include #include -#include #include static void soc_fsp_load(void) @@ -56,25 +55,6 @@ static void configure_misc(void) wrmsr(MSR_POWER_CTL, msr); } -static void enable_pm_timer_emulation(void) -{ - msr_t msr; - - if (!CONFIG_CPU_XTAL_HZ) - return; - - /* - * The derived frequency is calculated as follows: - * (clock * msr[63:32]) >> 32 = target frequency. - * Back solve the multiplier so the 3.579545MHz ACPI timer frequency is used. - */ - msr.hi = (3579545ULL << 32) / CONFIG_CPU_XTAL_HZ; - /* Set PM1 timer IO port and enable */ - msr.lo = (EMULATE_DELAY_VALUE << EMULATE_DELAY_OFFSET_VALUE) | - EMULATE_PM_TMR_EN | (ACPI_BASE_ADDRESS + PM1_TMR); - wrmsr(MSR_EMULATE_PM_TIMER, msr); -} - /* All CPUs including BSP will run the following function. */ void soc_core_init(struct device *cpu) { @@ -91,7 +71,6 @@ void soc_core_init(struct device *cpu) /* Configure Enhanced SpeedStep and Thermal Sensors */ configure_misc(); - /* Enable PM timer emulation */ enable_pm_timer_emulation(); /* Enable Direct Cache Access */ diff --git a/src/soc/intel/icelake/cpu.c b/src/soc/intel/icelake/cpu.c index ea2b3574b2..1734ba6c30 100644 --- a/src/soc/intel/icelake/cpu.c +++ b/src/soc/intel/icelake/cpu.c @@ -17,7 +17,6 @@ #include #include #include -#include #include static void soc_fsp_load(void) @@ -56,25 +55,6 @@ static void configure_misc(void) wrmsr(MSR_POWER_CTL, msr); } -static void enable_pm_timer_emulation(void) -{ - msr_t msr; - - if (!CONFIG_CPU_XTAL_HZ) - return; - - /* - * The derived frequency is calculated as follows: - * (clock * msr[63:32]) >> 32 = target frequency. - * Back solve the multiplier so the 3.579545MHz ACPI timer frequency is used. - */ - msr.hi = (3579545ULL << 32) / CONFIG_CPU_XTAL_HZ; - /* Set PM1 timer IO port and enable */ - msr.lo = (EMULATE_DELAY_VALUE << EMULATE_DELAY_OFFSET_VALUE) | - EMULATE_PM_TMR_EN | (ACPI_BASE_ADDRESS + PM1_TMR); - wrmsr(MSR_EMULATE_PM_TIMER, msr); -} - static void configure_c_states(void) { msr_t msr; @@ -127,7 +107,6 @@ void soc_core_init(struct device *cpu) /* Configure Enhanced SpeedStep and Thermal Sensors */ configure_misc(); - /* Enable PM timer emulation */ enable_pm_timer_emulation(); /* Enable Direct Cache Access */ diff --git a/src/soc/intel/jasperlake/cpu.c b/src/soc/intel/jasperlake/cpu.c index 312fc7d7af..6518945d8d 100644 --- a/src/soc/intel/jasperlake/cpu.c +++ b/src/soc/intel/jasperlake/cpu.c @@ -17,7 +17,6 @@ #include #include #include -#include #include static void soc_fsp_load(void) @@ -56,25 +55,6 @@ static void configure_misc(void) wrmsr(MSR_POWER_CTL, msr); } -static void enable_pm_timer_emulation(void) -{ - msr_t msr; - - if (!CONFIG_CPU_XTAL_HZ) - return; - - /* - * The derived frequency is calculated as follows: - * (clock * msr[63:32]) >> 32 = target frequency. - * Back solve the multiplier so the 3.579545MHz ACPI timer frequency is used. - */ - msr.hi = (3579545ULL << 32) / CONFIG_CPU_XTAL_HZ; - /* Set PM1 timer IO port and enable */ - msr.lo = (EMULATE_DELAY_VALUE << EMULATE_DELAY_OFFSET_VALUE) | - EMULATE_PM_TMR_EN | (ACPI_BASE_ADDRESS + PM1_TMR); - wrmsr(MSR_EMULATE_PM_TIMER, msr); -} - /* All CPUs including BSP will run the following function. */ void soc_core_init(struct device *cpu) { @@ -91,7 +71,6 @@ void soc_core_init(struct device *cpu) /* Configure Enhanced SpeedStep and Thermal Sensors */ configure_misc(); - /* Enable PM timer emulation */ enable_pm_timer_emulation(); /* Enable Direct Cache Access */ diff --git a/src/soc/intel/skylake/cpu.c b/src/soc/intel/skylake/cpu.c index 1682503d4b..6872c12101 100644 --- a/src/soc/intel/skylake/cpu.c +++ b/src/soc/intel/skylake/cpu.c @@ -21,7 +21,6 @@ #include #include #include -#include #include #include @@ -96,29 +95,6 @@ static void configure_c_states(void) wrmsr(MSR_C_STATE_LATENCY_CONTROL_5, msr); } -/* - * The emulated ACPI timer allows disabling of the ACPI timer - * (PM1_TMR) to have no impart on the system. - */ -static void enable_pm_timer_emulation(void) -{ - msr_t msr; - - if (!CONFIG_CPU_XTAL_HZ) - return; - - /* - * The derived frequency is calculated as follows: - * (clock * msr[63:32]) >> 32 = target frequency. - * Back solve the multiplier so the 3.579545MHz ACPI timer frequency is used. - */ - msr.hi = (3579545ULL << 32) / CONFIG_CPU_XTAL_HZ; - /* Set PM1 timer IO port and enable */ - msr.lo = (EMULATE_DELAY_VALUE << EMULATE_DELAY_OFFSET_VALUE) | - EMULATE_PM_TMR_EN | (ACPI_BASE_ADDRESS + PM1_TMR); - wrmsr(MSR_EMULATE_PM_TIMER, msr); -} - /* All CPUs including BSP will run the following function. */ void soc_core_init(struct device *cpu) { diff --git a/src/soc/intel/tigerlake/cpu.c b/src/soc/intel/tigerlake/cpu.c index d7234e7191..36dfa1b738 100644 --- a/src/soc/intel/tigerlake/cpu.c +++ b/src/soc/intel/tigerlake/cpu.c @@ -23,7 +23,6 @@ #include #include #include -#include #include static void soc_fsp_load(void) @@ -62,25 +61,6 @@ static void configure_misc(void) wrmsr(MSR_POWER_CTL, msr); } -static void enable_pm_timer_emulation(void) -{ - msr_t msr; - - if (!CONFIG_CPU_XTAL_HZ) - return; - - /* - * The derived frequency is calculated as follows: - * (clock * msr[63:32]) >> 32 = target frequency. - * Back solve the multiplier so the 3.579545MHz ACPI timer frequency is used. - */ - msr.hi = (3579545ULL << 32) / CONFIG_CPU_XTAL_HZ; - /* Set PM1 timer IO port and enable */ - msr.lo = (EMULATE_DELAY_VALUE << EMULATE_DELAY_OFFSET_VALUE) | - EMULATE_PM_TMR_EN | (ACPI_BASE_ADDRESS + PM1_TMR); - wrmsr(MSR_EMULATE_PM_TIMER, msr); -} - /* All CPUs including BSP will run the following function. */ void soc_core_init(struct device *cpu) { @@ -97,7 +77,6 @@ void soc_core_init(struct device *cpu) /* Configure Enhanced SpeedStep and Thermal Sensors */ configure_misc(); - /* Enable PM timer emulation */ enable_pm_timer_emulation(); /* Enable Direct Cache Access */