summaryrefslogtreecommitdiff
path: root/arch/x86/include/asm/mach-default/mach_wakecpu.h
blob: d7136fcdd8f32afef6f6653bf660a510fb200b9d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
#ifndef _ASM_X86_MACH_DEFAULT__MACH_WAKECPU_H
#define _ASM_X86_MACH_DEFAULT__MACH_WAKECPU_H

/* 
 * This file copes with machines that wakeup secondary CPUs by the
 * INIT, INIT, STARTUP sequence.
 */

#define WAKE_SECONDARY_VIA_INIT

#define TRAMPOLINE_LOW phys_to_virt(0x467)
#define TRAMPOLINE_HIGH phys_to_virt(0x469)

#define boot_cpu_apicid boot_cpu_physical_apicid

static inline void wait_for_init_deassert(atomic_t *deassert)
{
	while (!atomic_read(deassert))
		cpu_relax();
	return;
}

/* Nothing to do for most platforms, since cleared by the INIT cycle */
static inline void smp_callin_clear_local_apic(void)
{
}

static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
{
}

static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
{
}

#if APIC_DEBUG
 #define inquire_remote_apic(apicid) __inquire_remote_apic(apicid)
#else
 #define inquire_remote_apic(apicid) {}
#endif

#endif /* _ASM_X86_MACH_DEFAULT__MACH_WAKECPU_H */