trampoline.h File Reference

#include <kernel/cpu/smp.h>
#include <kernel/drivers/apic.h>
#include <stdint.h>
#include <sys/proc.h>

Go to the source code of this file.

Macros
#define	TRAMPOLINE_BASE_ADDR   0x8000
	The physical address where the trampoline code will be copied to and executed from.
#define	TRAMPOLINE_DATA_OFFSET   0x0F00
	The offset within the trampoline page where we can store data.
#define	TRAMPOLINE_PML4_OFFSET   (TRAMPOLINE_DATA_OFFSET + 0x00)
	Offset within the trampoline page where the PML4 address is stored.
#define	TRAMPOLINE_ENTRY_OFFSET   (TRAMPOLINE_DATA_OFFSET + 0x08)
	Offset within the trampoline page where the entry point to jump to is stored.
#define	TRAMPOLINE_CPU_ID_OFFSET   (TRAMPOLINE_DATA_OFFSET + 0x10)
	Offset within the trampoline page where the CPU id is stored.
#define	TRAMPOLINE_CPU_OFFSET   (TRAMPOLINE_DATA_OFFSET + 0x18)
	Offset within the trampoline page where the CPU structure pointer is stored.
#define	TRAMPOLINE_STACK_OFFSET   (TRAMPOLINE_DATA_OFFSET + 0x20)
	Offset within the trampoline page where the stack pointer for the trampoline is stored.
#define	TRAMPOLINE_ADDR(offset)   ((void*)(TRAMPOLINE_BASE_ADDR + (offset)))
	Macro to get a pointer to an address within the trampoline page.
#define	TRAMPOLINE_SIZE   ((uintptr_t)trampoline_end - (uintptr_t)trampoline_start)
	The size of the trampoline code.

Functions
void	trampoline_start (void)
	The start of the trampoline code, defined in trampoline.s.
void	trampoline_end (void)
	The end of the trampoline code, defined in trampoline.s.
void	trampoline_init (void)
	Initializes the trampoline by copying the trampoline code to its designated memory location.
void	trampoline_deinit (void)
	Deinitializes the trampoline by restoring the original contents of the trampoline memory location.
void	trampoline_send_startup_ipi (cpu_t *cpu, cpuid_t cpuId, lapic_id_t lapicId)
	Sends the startup IPI to a CPU to start it up.
uint64_t	trampoline_wait_ready (clock_t timeout)
	Waits for the currently starting CPU to signal that it is ready.
_NORETURN void	trampoline_c_entry (cpu_t *self, cpuid_t cpuId)
	After the trampoline is done with basic initialization, it calls this C entry point to continue CPU initialization.