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/* $NetBSD: cpu.h,v 1.2 2001/02/23 21:23:52 reinoud Exp $ */
/* $FreeBSD$ */
#ifndef MACHINE_CPU_H
#define MACHINE_CPU_H
#include <machine/acle-compat.h>
#include <machine/armreg.h>
#include <machine/frame.h>
void cpu_halt(void);
void swi_vm(void *);
#ifdef _KERNEL
#if __ARM_ARCH >= 6
#include <machine/cpu-v6.h>
#else
#include <machine/cpu-v4.h>
#endif /* __ARM_ARCH >= 6 */
static __inline uint64_t
get_cyclecount(void)
{
#if __ARM_ARCH >= 6
#if (__ARM_ARCH > 6) && defined(DEV_PMU)
if (pmu_attched) {
u_int cpu;
uint64_t h, h2;
uint32_t l, r;
cpu = PCPU_GET(cpuid);
h = (uint64_t)atomic_load_acq_32(&ccnt_hi[cpu]);
l = cp15_pmccntr_get();
/* In case interrupts are disabled we need to check for overflow. */
r = cp15_pmovsr_get();
if (r & PMU_OVSR_C) {
atomic_add_32(&ccnt_hi[cpu], 1);
/* Clear the event. */
cp15_pmovsr_set(PMU_OVSR_C);
}
/* Make sure there was no wrap-around while we read the lo half. */
h2 = (uint64_t)atomic_load_acq_32(&ccnt_hi[cpu]);
if (h != h2)
l = cp15_pmccntr_get();
return (h2 << 32 | l);
} else
#endif
return cp15_pmccntr_get();
#else /* No performance counters, so use binuptime(9). This is slooooow */
struct bintime bt;
binuptime(&bt);
return ((uint64_t)bt.sec << 56 | bt.frac >> 8);
#endif
}
#endif
#define TRAPF_USERMODE(frame) ((frame->tf_spsr & PSR_MODE) == PSR_USR32_MODE)
#define TRAPF_PC(tfp) ((tfp)->tf_pc)
#define cpu_getstack(td) ((td)->td_frame->tf_usr_sp)
#define cpu_setstack(td, sp) ((td)->td_frame->tf_usr_sp = (sp))
#define cpu_spinwait() /* nothing */
#define ARM_NVEC 8
#define ARM_VEC_ALL 0xffffffff
extern vm_offset_t vector_page;
/*
* Params passed into initarm. If you change the size of this you will
* need to update locore.S to allocate more memory on the stack before
* it calls initarm.
*/
struct arm_boot_params {
register_t abp_size; /* Size of this structure */
register_t abp_r0; /* r0 from the boot loader */
register_t abp_r1; /* r1 from the boot loader */
register_t abp_r2; /* r2 from the boot loader */
register_t abp_r3; /* r3 from the boot loader */
vm_offset_t abp_physaddr; /* The kernel physical address */
vm_offset_t abp_pagetable; /* The early page table */
};
void arm_vector_init(vm_offset_t, int);
void fork_trampoline(void);
void identify_arm_cpu(void);
void *initarm(struct arm_boot_params *);
extern char btext[];
extern char etext[];
int badaddr_read(void *, size_t, void *);
#endif /* !MACHINE_CPU_H */
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