diff options
Diffstat (limited to 'src/include/cpu')
| -rw-r--r-- | src/include/cpu/x86/mp.h | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/src/include/cpu/x86/mp.h b/src/include/cpu/x86/mp.h index ff88a20301..9742df08c1 100644 --- a/src/include/cpu/x86/mp.h +++ b/src/include/cpu/x86/mp.h @@ -29,56 +29,6 @@ static inline void mfence(void) __asm__ __volatile__("mfence\t\n": : :"memory"); } -typedef void (*mp_callback_t)(void); - -/* - * A mp_flight_record details a sequence of calls for the APs to perform - * along with the BSP to coordinate sequencing. Each flight record either - * provides a barrier for each AP before calling the callback or the APs - * are allowed to perform the callback without waiting. Regardless, each - * record has the cpus_entered field incremented for each record. When - * the BSP observes that the cpus_entered matches the number of APs - * the bsp_call is called with bsp_arg and upon returning releases the - * barrier allowing the APs to make further progress. - * - * Note that ap_call() and bsp_call() can be NULL. In the NULL case the - * callback will just not be called. - */ -struct mp_flight_record { - atomic_t barrier; - atomic_t cpus_entered; - mp_callback_t ap_call; - mp_callback_t bsp_call; -} __attribute__((aligned(CACHELINE_SIZE))); - -#define _MP_FLIGHT_RECORD(barrier_, ap_func_, bsp_func_) \ - { \ - .barrier = ATOMIC_INIT(barrier_), \ - .cpus_entered = ATOMIC_INIT(0), \ - .ap_call = ap_func_, \ - .bsp_call = bsp_func_, \ - } - -#define MP_FR_BLOCK_APS(ap_func_, bsp_func_) \ - _MP_FLIGHT_RECORD(0, ap_func_, bsp_func_) - -#define MP_FR_NOBLOCK_APS(ap_func_, bsp_func_) \ - _MP_FLIGHT_RECORD(1, ap_func_, bsp_func_) - -/* The mp_params structure provides the arguments to the mp subsystem - * for bringing up APs. */ -struct mp_params { - int num_cpus; /* Total cpus include BSP */ - int parallel_microcode_load; - const void *microcode_pointer; - /* adjust_apic_id() is called for every potential apic id in the - * system up from 0 to CONFIG_MAX_CPUS. Return adjusted apic_id. */ - int (*adjust_apic_id)(int index, int apic_id); - /* Flight plan for APs and BSP. */ - struct mp_flight_record *flight_plan; - int num_records; -}; - /* The sequence of the callbacks are in calling order. */ struct mp_ops { /* @@ -175,37 +125,6 @@ struct mp_ops { int mp_init_with_smm(struct bus *cpu_bus, const struct mp_ops *mp_ops); /* - * mp_init() will set up the SIPI vector and bring up the APs according to - * mp_params. Each flight record will be executed according to the plan. Note - * that the MP infrastructure uses SMM default area without saving it. It's - * up to the chipset or mainboard to either e820 reserve this area or save this - * region prior to calling mp_init() and restoring it after mp_init returns. - * - * At the time mp_init() is called the MTRR MSRs are mirrored into APs then - * caching is enabled before running the flight plan. - * - * The MP initialization has the following properties: - * 1. APs are brought up in parallel. - * 2. The ordering of coreboot cpu number and APIC ids is not deterministic. - * Therefore, one cannot rely on this property or the order of devices in - * the device tree unless the chipset or mainboard know the APIC ids - * a priori. - * - * mp_init() returns < 0 on error, 0 on success. - */ -int mp_init(struct bus *cpu_bus, struct mp_params *params); - -/* - * Useful functions to use in flight records when sequencing APs. - */ - -/* Calls cpu_initialize(info->index) which calls the coreboot CPU drivers. */ -void mp_initialize_cpu(void); - -/* Returns apic id for coreboot cpu number or < 0 on failure. */ -int mp_get_apic_id(int cpu_slot); - -/* * SMM helpers to use with initializing CPUs. */ |