lapic_cpu_init.c File Reference

#include <cpu/x86/cr.h>
#include <cpu/x86/gdt.h>
#include <cpu/x86/lapic.h>
#include <cpu/x86/smi_deprecated.h>
#include <acpi/acpi.h>
#include <delay.h>
#include <lib.h>
#include <string.h>
#include <symbols.h>
#include <console/console.h>
#include <device/device.h>
#include <device/path.h>
#include <smp/atomic.h>
#include <smp/spinlock.h>
#include <cpu/cpu.h>
#include <cpu/intel/speedstep.h>
#include <smp/node.h>
#include <stdlib.h>
#include <thread.h>

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Macros
#define	AP_SIPI_VECTOR   0x1000

Functions
static void	setup_secondary_gdt (void)
static void	copy_secondary_start_to_lowest_1M (void)
static void	recover_lowest_1M (void)
static uint32_t	wait_for_ipi_completion (const int timeout_ms)
static int	lapic_start_cpu (unsigned long apicid)
	DECLARE_SPIN_LOCK (start_cpu_lock)
static int	start_cpu (struct device *cpu)
asmlinkage void	secondary_cpu_init (unsigned int index)
static void	start_other_cpus (struct bus *cpu_bus, struct device *bsp_cpu)
static void	wait_other_cpus_stop (struct bus *cpu_bus)
void	initialize_cpus (struct bus *cpu_bus)

Variables
static char *	lowmem_backup
static char *	lowmem_backup_ptr
static int	lowmem_backup_size
static atomic_t	active_cpus = ATOMIC_INIT(1)
static unsigned int	last_cpu_index = 0
static void *	stacks [CONFIG_MAX_CPUS]
volatile unsigned long	secondary_stack
volatile unsigned int	secondary_cpu_index

Macro Definition Documentation

AP_SIPI_VECTOR

#define AP_SIPI_VECTOR   0x1000

Definition at line 32 of file lapic_cpu_init.c.

Function Documentation

copy_secondary_start_to_lowest_1M()

static void copy_secondary_start_to_lowest_1M ( void  )

static

Definition at line 54 of file lapic_cpu_init.c.

References _secondary_start, _secondary_start_end, acpi_is_wakeup_s3(), AP_SIPI_VECTOR, BIOS_DEBUG, die(), lowmem_backup, lowmem_backup_ptr, lowmem_backup_size, malloc(), memcpy(), NULL, printk, and setup_secondary_gdt().

Referenced by initialize_cpus().

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DECLARE_SPIN_LOCK()

DECLARE_SPIN_LOCK

(

start_cpu_lock

)

initialize_cpus()

void initialize_cpus

(

struct bus *

cpu_bus

)

Definition at line 375 of file lapic_cpu_init.c.

References alloc_find_dev(), CONFIG, copy_secondary_start_to_lowest_1M(), cpu_add_map_entry(), cpu_info(), cpu_initialize(), DEVICE_PATH_APIC, disable_lapic(), enable_lapic(), info, is_smp_boot(), lapicid(), recover_lowest_1M(), setup_lapic_interrupts(), smm_init(), smm_init_completion(), start_other_cpus(), and wait_other_cpus_stop().

Referenced by cpu_bus_init().

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lapic_start_cpu()

static int lapic_start_cpu ( unsigned long  apicid )

static

Definition at line 106 of file lapic_cpu_init.c.

References AP_SIPI_VECTOR, BIOS_ERR, BIOS_SPEW, BIOS_WARNING, LAPIC_DM_INIT, LAPIC_DM_STARTUP, LAPIC_ESR, LAPIC_INT_ASSERT, LAPIC_INT_LEVELTRIG, lapic_read(), lapic_send_ipi(), LAPIC_SPIV, lapic_write(), mdelay(), printk, udelay(), and wait_for_ipi_completion().

Referenced by start_cpu().

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recover_lowest_1M()

static void recover_lowest_1M ( void  )

static

Definition at line 84 of file lapic_cpu_init.c.

References acpi_is_wakeup_s3(), lowmem_backup, lowmem_backup_ptr, lowmem_backup_size, and memcpy().

Referenced by initialize_cpus().

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secondary_cpu_init()

asmlinkage void secondary_cpu_init

(

unsigned int

index

)

Definition at line 285 of file lapic_cpu_init.c.

References active_cpus, atomic_dec, atomic_inc, cpu_initialize(), CR4_OSFXSR, CR4_OSXMMEXCPT, CRx_TYPE, enable_lapic(), cpu_info::index, read_cr4(), setup_lapic_interrupts(), spin_lock, spin_unlock, stop_this_cpu(), and write_cr4().

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setup_secondary_gdt()

static void setup_secondary_gdt ( void  )

inlinestatic

Definition at line 38 of file lapic_cpu_init.c.

References _secondary_gdt_addr, gdt, and gdt_end.

Referenced by copy_secondary_start_to_lowest_1M().

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start_cpu()

static int start_cpu ( struct device *  cpu )

static

Definition at line 224 of file lapic_cpu_init.c.

References ALIGN_DOWN, device_path::apic, apic_path::apic_id, BIOS_SPEW, count, cpu_info::cpu, cpu_add_map_entry(), device::enabled, cpu_info::index, info, device::initialized, lapic_start_cpu(), last_cpu_index, device::path, printk, secondary_cpu_index, secondary_stack, spin_lock, spin_unlock, stack_top, stacks, and udelay().

Referenced by ccplex_cpu_start(), mainboard_init(), and start_other_cpus().

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start_other_cpus()

static void start_other_cpus ( struct bus *  cpu_bus, struct device *  bsp_cpu  )

static

Definition at line 315 of file lapic_cpu_init.c.

References device_path::apic, apic_path::apic_id, BIOS_ERR, bus::children, DEVICE_PATH_APIC, device::enabled, device::initialized, device::path, printk, device::sibling, start_cpu(), device_path::type, and udelay().

Referenced by initialize_cpus().

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wait_for_ipi_completion()

static uint32_t wait_for_ipi_completion ( const int  timeout_ms )

static

Definition at line 90 of file lapic_cpu_init.c.

References BIOS_SPEW, lapic_busy(), printk, and udelay().

Referenced by lapic_start_cpu().

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wait_other_cpus_stop()

static void wait_other_cpus_stop ( struct bus *  cpu_bus )

static

Definition at line 340 of file lapic_cpu_init.c.

References active_cpus, device_path::apic, apic_path::apic_id, atomic_read, BIOS_DEBUG, BIOS_ERR, BIOS_INFO, checkstack(), bus::children, DEVICE_PATH_APIC, device::initialized, last_cpu_index, device::path, printk, device::sibling, SPEEDSTEP_APIC_MAGIC, stacks, device_path::type, and udelay().

Referenced by initialize_cpus().

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Variable Documentation

active_cpus

atomic_t active_cpus = ATOMIC_INIT(1)

static

Definition at line 207 of file lapic_cpu_init.c.

Referenced by secondary_cpu_init(), and wait_other_cpus_stop().

last_cpu_index

unsigned int last_cpu_index = 0

static

Definition at line 219 of file lapic_cpu_init.c.

Referenced by start_cpu(), and wait_other_cpus_stop().

lowmem_backup

char* lowmem_backup

static

Definition at line 34 of file lapic_cpu_init.c.

Referenced by copy_secondary_start_to_lowest_1M(), and recover_lowest_1M().

lowmem_backup_ptr

char* lowmem_backup_ptr

static

Definition at line 35 of file lapic_cpu_init.c.

Referenced by copy_secondary_start_to_lowest_1M(), and recover_lowest_1M().

lowmem_backup_size

int lowmem_backup_size

static

Definition at line 36 of file lapic_cpu_init.c.

Referenced by copy_secondary_start_to_lowest_1M(), and recover_lowest_1M().

secondary_cpu_index

volatile unsigned int secondary_cpu_index

Definition at line 222 of file lapic_cpu_init.c.

Referenced by start_cpu().

secondary_stack

volatile unsigned long secondary_stack

Definition at line 221 of file lapic_cpu_init.c.

Referenced by start_cpu().

stacks

void* stacks[CONFIG_MAX_CPUS]

static

Definition at line 220 of file lapic_cpu_init.c.

Referenced by start_cpu(), and wait_other_cpus_stop().