1 /* $NetBSD: cpu.h,v 1.2 2001/02/23 21:23:52 reinoud Exp $ */
7 #include <machine/armreg.h>
8 #include <machine/frame.h>
13 #include <machine/cpu-v6.h>
15 static __inline uint64_t
18 #if __ARM_ARCH > 6 || (__ARM_ARCH == 6 && defined(CPU_ARM1176))
19 #if (__ARM_ARCH > 6) && defined(DEV_PMU)
25 cpu = PCPU_GET(cpuid);
26 h = (uint64_t)atomic_load_acq_32(&ccnt_hi[cpu]);
27 l = cp15_pmccntr_get();
28 /* In case interrupts are disabled we need to check for overflow. */
29 r = cp15_pmovsr_get();
31 atomic_add_32(&ccnt_hi[cpu], 1);
32 /* Clear the event. */
33 cp15_pmovsr_set(PMU_OVSR_C);
35 /* Make sure there was no wrap-around while we read the lo half. */
36 h2 = (uint64_t)atomic_load_acq_32(&ccnt_hi[cpu]);
38 l = cp15_pmccntr_get();
39 return (h2 << 32 | l);
42 return cp15_pmccntr_get();
43 #else /* No performance counters, so use nanotime(9). */
47 return (tv.tv_sec * (uint64_t)1000000000ull + tv.tv_nsec);
52 #define TRAPF_USERMODE(frame) ((frame->tf_spsr & PSR_MODE) == PSR_USR32_MODE)
54 #define TRAPF_PC(tfp) ((tfp)->tf_pc)
56 #define cpu_getstack(td) ((td)->td_frame->tf_usr_sp)
57 #define cpu_setstack(td, sp) ((td)->td_frame->tf_usr_sp = (sp))
58 #define cpu_spinwait() /* nothing */
59 #define cpu_lock_delay() DELAY(1)
62 #define ARM_VEC_ALL 0xffffffff
64 extern vm_offset_t vector_page;
67 * Params passed into initarm. If you change the size of this you will
68 * need to update locore.S to allocate more memory on the stack before
71 struct arm_boot_params {
72 register_t abp_size; /* Size of this structure */
73 register_t abp_r0; /* r0 from the boot loader */
74 register_t abp_r1; /* r1 from the boot loader */
75 register_t abp_r2; /* r2 from the boot loader */
76 register_t abp_r3; /* r3 from the boot loader */
77 vm_offset_t abp_physaddr; /* The kernel physical address */
78 vm_offset_t abp_pagetable; /* The early page table */
81 void arm_vector_init(vm_offset_t, int);
82 void fork_trampoline(void);
83 void identify_arm_cpu(void);
84 void *initarm(struct arm_boot_params *);
88 int badaddr_read(void *, size_t, void *);
89 #endif /* !MACHINE_CPU_H */