cpu.c File Reference

#include <types.h>
#include <soc/addressmap.h>
#include <device/mmio.h>
#include <soc/cpu.h>
#include <bdk-coreboot.h>
#include <console/console.h>
#include <timer.h>
#include <delay.h>

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Functions
uint64_t	cpu_get_available_core_mask (void)
	Return the mask of available cores. More...
size_t	cpu_get_num_available_cores (void)
	Return the number of cores available in the chip. More...
void	secondary_cpu_init (size_t core_id)
	Secondary CPU C entry point. More...
size_t	cpu_self_get_core_id (void)
	Number of the Core on which the program is currently running. More...
uint64_t	cpu_self_get_core_mask (void)
	Return a mask representing this core in a 64bit bitmask. More...
size_t	start_cpu (size_t cpu, void(*entry_64)(size_t core_id))
	Init secondary core and call the provided entry for given core. More...

Variables
static void(*	secondary_c_entry )(size_t core_id)
static size_t	secondary_booted

Function Documentation

cpu_get_available_core_mask()

uint64_t cpu_get_available_core_mask

(

void

)

Return the mask of available cores.

Returns

Mask of available cores

Definition at line 12 of file cpu.c.

References read64(), and RST_PP_AVAILABLE.

Referenced by cpu_get_num_available_cores(), and start_cpu().

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cpu_get_num_available_cores()

size_t cpu_get_num_available_cores

(

void

)

Return the number of cores available in the chip.

Returns

The number of available cores.

Definition at line 17 of file cpu.c.

References cpu_get_available_core_mask().

Referenced by mainboard_print_info().

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cpu_self_get_core_id()

size_t cpu_self_get_core_id

(

void

)

Number of the Core on which the program is currently running.

Returns

Number of cores

Definition at line 36 of file cpu.c.

Referenced by cpu_self_get_core_mask(), and start_cpu().

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cpu_self_get_core_mask()

uint64_t cpu_self_get_core_mask

(

void

)

Return a mask representing this core in a 64bit bitmask.

Returns

The mask of active core.

Definition at line 49 of file cpu.c.

References cpu_self_get_core_id().

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secondary_cpu_init()

void secondary_cpu_init

(

size_t

core_id

)

Secondary CPU C entry point.

For internal use only.

Definition at line 25 of file cpu.c.

References dmb, secondary_booted, secondary_c_entry, and write64().

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start_cpu()

size_t start_cpu	(	size_t	cpu,
		void(*)(size_t core_id)	entry_64
	)

Init secondary core and call the provided entry for given core.

A stack of size CONFIG_STACK_SIZE is set up for each core in REGION stack_sec. The unique core id is passed to the entry point functions.

Returns

zero on success

Definition at line 54 of file cpu.c.

References BIOS_DEBUG, BIOS_ERR, BIOS_INFO, cpu_get_available_core_mask(), cpu_self_get_core_id(), dmb, MIO_BOOT_AP_JUMP, printk, read64(), REGION_SIZE, reset(), RST_PP_PENDING, RST_PP_RESET, secondary_booted, secondary_c_entry, secondary_init(), stopwatch_expired(), stopwatch_init_usecs_expire(), udelay(), and write64().

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Variable Documentation

secondary_booted

size_t secondary_booted

static

Definition at line 23 of file cpu.c.

Referenced by secondary_cpu_init(), and start_cpu().

secondary_c_entry

void(* secondary_c_entry) (size_t core_id) ( size_t  core_id )

static

Definition at line 22 of file cpu.c.

Referenced by secondary_cpu_init(), and start_cpu().