diff options
Diffstat (limited to 'src/cpu/intel/haswell')
| -rw-r--r-- | src/cpu/intel/haswell/haswell.h | 2 | ||||
| -rw-r--r-- | src/cpu/intel/haswell/haswell_init.c | 72 |
2 files changed, 56 insertions, 18 deletions
diff --git a/src/cpu/intel/haswell/haswell.h b/src/cpu/intel/haswell/haswell.h index 7ce868d30d..cb85078db4 100644 --- a/src/cpu/intel/haswell/haswell.h +++ b/src/cpu/intel/haswell/haswell.h @@ -108,6 +108,8 @@ void intel_cpu_haswell_finalize_smm(void); /* Configure power limits for turbo mode */ void set_power_limits(u8 power_limit_1_time); int cpu_config_tdp_levels(void); +struct bus; +void bsp_init_and_start_aps(struct bus *cpu_bus); #endif #endif diff --git a/src/cpu/intel/haswell/haswell_init.c b/src/cpu/intel/haswell/haswell_init.c index 45c1a25bc0..9e62b31eb9 100644 --- a/src/cpu/intel/haswell/haswell_init.c +++ b/src/cpu/intel/haswell/haswell_init.c @@ -499,18 +499,9 @@ static void intel_cores_init(device_t cpu) } } -static void haswell_init(device_t cpu) +static void bsp_init_before_ap_bringup(void) { char processor_name[49]; - struct cpuid_result cpuid_regs; - - intel_update_microcode_from_cbfs(); - - /* Turn on caching if we haven't already */ - x86_enable_cache(); - - /* Clear out pending MCEs */ - configure_mca(); /* Print processor name */ fill_processor_name(processor_name); @@ -523,19 +514,36 @@ static void haswell_init(device_t cpu) set_ehci_debug(0); #endif - /* Setup MTRRs based on physical address size */ - cpuid_regs = cpuid(0x80000008); + /* Setup MTRRs based on physical address size. */ x86_setup_fixed_mtrrs(); - x86_setup_var_mtrrs(cpuid_regs.eax & 0xff, 2); + x86_setup_var_mtrrs(cpuid_eax(0x80000008) & 0xff, 2); x86_mtrr_check(); - /* Setup Page Attribute Tables (PAT) */ - // TODO set up PAT - #if CONFIG_USBDEBUG set_ehci_debug(ehci_debug_addr); #endif + enable_lapic(); +} + +static void ap_init(device_t cpu) +{ + /* Microcode needs to be loaded before caching is enabled. */ + intel_update_microcode_from_cbfs(); + + /* Turn on caching if we haven't already */ + x86_enable_cache(); + x86_setup_fixed_mtrrs(); + x86_setup_var_mtrrs(cpuid_eax(0x80000008) & 0xff, 2); + + enable_lapic(); +} + +static void cpu_common_init(device_t cpu) +{ + /* Clear out pending MCEs */ + configure_mca(); + /* Enable the local cpu apics */ enable_lapic_tpr(); setup_lapic(); @@ -560,9 +568,37 @@ static void haswell_init(device_t cpu) /* Enable Turbo */ enable_turbo(); +} + +void bsp_init_and_start_aps(struct bus *cpu_bus) +{ + /* Perform any necesarry BSP initialization before APs are brought up. + * This call alos allows the BSP to prepare for any secondary effects + * from calling cpu_initialize() such as smm_init(). */ + bsp_init_before_ap_bringup(); + + /* + * This calls into the gerneic initialize_cpus() which attempts to + * start APs on the APIC bus in the devicetree. No APs get started + * because there is only the BSP and a placeholder (disabled) in the + * devicetree. initialize_cpus() also does SMM initialization by way + * of smm_init(). It will eventually call cpu_initialize(0) which calls + * dev_ops->init(). For Haswell the dev_ops->init() starts up the APs + * by way of intel_cores_init(). + */ + initialize_cpus(cpu_bus); +} - /* Start up extra cores */ - intel_cores_init(cpu); +static void haswell_init(device_t cpu) +{ + if (cpu->path.apic.apic_id == 0) { + cpu_common_init(cpu); + /* Start up extra cores */ + intel_cores_init(cpu); + } else { + ap_init(cpu); + cpu_common_init(cpu); + } } static struct device_operations cpu_dev_ops = { |