cpu.h revision 276803 
1/* $NetBSD: cpu.h,v 1.2 2001/02/23 21:23:52 reinoud Exp $ */
2/* $FreeBSD: head/sys/arm/include/cpu.h 276803 2015-01-08 01:28:46Z ian $ */
3
4#ifndef MACHINE_CPU_H
5#define MACHINE_CPU_H
6
7#include <machine/acle-compat.h>
8#include <machine/armreg.h>
9#include <machine/frame.h>
10
11#if __ARM_ARCH >= 6
12#include <machine/cpu-v6.h>
13#endif
14
15void	cpu_halt(void);
16void	swi_vm(void *);
17
18#ifdef _KERNEL
19static __inline uint64_t
20get_cyclecount(void)
21{
22#if __ARM_ARCH >= 6
23	return cp15_pmccntr_get();
24#else /* No performance counters, so use binuptime(9). This is slooooow */
25	struct bintime bt;
26
27	binuptime(&bt);
28	return ((uint64_t)bt.sec << 56 | bt.frac >> 8);
29#endif
30}
31#endif
32
33#define TRAPF_USERMODE(frame)	((frame->tf_spsr & PSR_MODE) == PSR_USR32_MODE)
34
35#define TRAPF_PC(tfp)		((tfp)->tf_pc)
36
37#define cpu_getstack(td)	((td)->td_frame->tf_usr_sp)
38#define cpu_setstack(td, sp)	((td)->td_frame->tf_usr_sp = (sp))
39#define cpu_spinwait()		/* nothing */
40
41#define ARM_NVEC		8
42#define ARM_VEC_ALL		0xffffffff
43
44extern vm_offset_t vector_page;
45
46/*
47 * Params passed into initarm. If you change the size of this you will
48 * need to update locore.S to allocate more memory on the stack before
49 * it calls initarm.
50 */
51struct arm_boot_params {
52	register_t	abp_size;	/* Size of this structure */
53	register_t	abp_r0;		/* r0 from the boot loader */
54	register_t	abp_r1;		/* r1 from the boot loader */
55	register_t	abp_r2;		/* r2 from the boot loader */
56	register_t	abp_r3;		/* r3 from the boot loader */
57	vm_offset_t	abp_physaddr;	/* The kernel physical address */
58	vm_offset_t	abp_pagetable;	/* The early page table */
59};
60
61void	arm_vector_init(vm_offset_t, int);
62void	fork_trampoline(void);
63void	identify_arm_cpu(void);
64void	*initarm(struct arm_boot_params *);
65
66extern char btext[];
67extern char etext[];
68int badaddr_read(void *, size_t, void *);
69#endif /* !MACHINE_CPU_H */
70