diff options
Diffstat (limited to 'src/soc/intel/cannonlake/cpu.c')
-rw-r--r-- | src/soc/intel/cannonlake/cpu.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/soc/intel/cannonlake/cpu.c b/src/soc/intel/cannonlake/cpu.c index ddedb3fed2..0622034217 100644 --- a/src/soc/intel/cannonlake/cpu.c +++ b/src/soc/intel/cannonlake/cpu.c @@ -114,19 +114,22 @@ static void enable_pm_timer_emulation(void) { msr_t msr; + if (!CONFIG_CPU_XTAL_HZ) + return; + /* * The derived frequency is calculated as follows: - * (CTC_FREQ * msr[63:32]) >> 32 = target frequency. - * Back solve the multiplier so the 3.579545MHz ACPI timer - * frequency is used. + * (clock * msr[63:32]) >> 32 = target frequency. + * Back solve the multiplier so the 3.579545MHz ACPI timer frequency is used. */ - msr.hi = (3579545ULL << 32) / CTC_FREQ; + 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 set_energy_perf_bias(u8 policy) { msr_t msr; |