diff options
Diffstat (limited to 'src/cpu/intel/haswell')
| -rw-r--r-- | src/cpu/intel/haswell/haswell_init.c | 71 |
1 files changed, 35 insertions, 36 deletions
diff --git a/src/cpu/intel/haswell/haswell_init.c b/src/cpu/intel/haswell/haswell_init.c index 15dcff54dd..86a90530da 100644 --- a/src/cpu/intel/haswell/haswell_init.c +++ b/src/cpu/intel/haswell/haswell_init.c @@ -304,14 +304,15 @@ static void initialize_vr_config(void) wrmsr(MSR_VR_MISC_CONFIG, msr); /* Configure VR_MISC_CONFIG2 MSR. */ - if (haswell_is_ult()) { - msr = rdmsr(MSR_VR_MISC_CONFIG2); - msr.lo &= ~0xffff; - /* Allow CPU to control minimum voltage completely (15:8) and - * set the fast ramp voltage to 1110mV (0x6f in 10mV steps). */ - msr.lo |= 0x006f; - wrmsr(MSR_VR_MISC_CONFIG2, msr); - } + if (!haswell_is_ult()) + return; + + msr = rdmsr(MSR_VR_MISC_CONFIG2); + msr.lo &= ~0xffff; + /* Allow CPU to control minimum voltage completely (15:8) and + * set the fast ramp voltage to 1110mV (0x6f in 10mV steps). */ + msr.lo |= 0x006f; + wrmsr(MSR_VR_MISC_CONFIG2, msr); } static void configure_pch_power_sharing(void) @@ -382,8 +383,7 @@ void set_power_limits(u8 power_limit_1_time) u8 power_limit_1_val; 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; + power_limit_1_time = ARRAY_SIZE(power_limit_time_sec_to_msr) - 1; if (!(msr.lo & PLATFORM_INFO_SET_TDP)) return; @@ -491,26 +491,24 @@ static void configure_c_states(void) msr.lo = IRTL_VALID | IRTL_1024_NS | C_STATE_LATENCY_CONTROL_2_LIMIT; wrmsr(MSR_C_STATE_LATENCY_CONTROL_2, msr); - /* Haswell ULT only supoprts the 3-5 latency response registers.*/ - if (haswell_is_ult()) { - /* C-state Interrupt Response Latency Control 3 - package C8 */ - msr.hi = 0; - msr.lo = IRTL_VALID | IRTL_1024_NS | - C_STATE_LATENCY_CONTROL_3_LIMIT; - wrmsr(MSR_C_STATE_LATENCY_CONTROL_3, msr); - - /* C-state Interrupt Response Latency Control 4 - package C9 */ - msr.hi = 0; - msr.lo = IRTL_VALID | IRTL_1024_NS | - C_STATE_LATENCY_CONTROL_4_LIMIT; - wrmsr(MSR_C_STATE_LATENCY_CONTROL_4, msr); - - /* C-state Interrupt Response Latency Control 5 - package C10 */ - msr.hi = 0; - msr.lo = IRTL_VALID | IRTL_1024_NS | - C_STATE_LATENCY_CONTROL_5_LIMIT; - wrmsr(MSR_C_STATE_LATENCY_CONTROL_5, msr); - } + /* Only Haswell ULT supports the 3-5 latency response registers */ + if (!haswell_is_ult()) + return; + + /* C-state Interrupt Response Latency Control 3 - package C8 */ + msr.hi = 0; + msr.lo = IRTL_VALID | IRTL_1024_NS | C_STATE_LATENCY_CONTROL_3_LIMIT; + wrmsr(MSR_C_STATE_LATENCY_CONTROL_3, msr); + + /* C-state Interrupt Response Latency Control 4 - package C9 */ + msr.hi = 0; + msr.lo = IRTL_VALID | IRTL_1024_NS | C_STATE_LATENCY_CONTROL_4_LIMIT; + wrmsr(MSR_C_STATE_LATENCY_CONTROL_4, msr); + + /* C-state Interrupt Response Latency Control 5 - package C10 */ + msr.hi = 0; + msr.lo = IRTL_VALID | IRTL_1024_NS | C_STATE_LATENCY_CONTROL_5_LIMIT; + wrmsr(MSR_C_STATE_LATENCY_CONTROL_5, msr); } static void configure_thermal_target(void) @@ -595,7 +593,7 @@ static void configure_mca(void) } /* All CPUs including BSP will run the following function. */ -static void haswell_init(struct device *cpu) +static void cpu_core_init(struct device *cpu) { /* Clear out pending MCEs */ configure_mca(); @@ -640,10 +638,11 @@ static void pre_mp_init(void) initialize_vr_config(); - if (haswell_is_ult()) { - calibrate_24mhz_bclk(); - configure_pch_power_sharing(); - } + if (!haswell_is_ult()) + return; + + calibrate_24mhz_bclk(); + configure_pch_power_sharing(); } static int get_cpu_count(void) @@ -705,7 +704,7 @@ void mp_init_cpus(struct bus *cpu_bus) } static struct device_operations cpu_dev_ops = { - .init = haswell_init, + .init = cpu_core_init, }; static const struct cpu_device_id cpu_table[] = { |