FreeBSD/Linux Kernel Cross Reference
sys/arm/include/cpu.h
1 /* $NetBSD: cpu.h,v 1.2 2001/02/23 21:23:52 reinoud Exp $ */
2 /* $FreeBSD: releng/10.2/sys/arm/include/cpu.h 278684 2015-02-13 17:53:11Z 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 void cpu_halt(void);
12 void swi_vm(void *);
13
14 #ifdef _KERNEL
15 #if __ARM_ARCH >= 6
16 #include <machine/cpu-v6.h>
17 #endif
18 static __inline uint64_t
19 get_cyclecount(void)
20 {
21 #if __ARM_ARCH >= 6
22 return cp15_pmccntr_get();
23 #else /* No performance counters, so use binuptime(9). This is slooooow */
24 struct bintime bt;
25
26 binuptime(&bt);
27 return ((uint64_t)bt.sec << 56 | bt.frac >> 8);
28 #endif
29 }
30 #endif
31
32 #define TRAPF_USERMODE(frame) ((frame->tf_spsr & PSR_MODE) == PSR_USR32_MODE)
33
34 #define TRAPF_PC(tfp) ((tfp)->tf_pc)
35
36 #define cpu_getstack(td) ((td)->td_frame->tf_usr_sp)
37 #define cpu_setstack(td, sp) ((td)->td_frame->tf_usr_sp = (sp))
38 #define cpu_spinwait() /* nothing */
39
40 #define ARM_NVEC 8
41 #define ARM_VEC_ALL 0xffffffff
42
43 extern vm_offset_t vector_page;
44
45 /*
46 * Params passed into initarm. If you change the size of this you will
47 * need to update locore.S to allocate more memory on the stack before
48 * it calls initarm.
49 */
50 struct arm_boot_params {
51 register_t abp_size; /* Size of this structure */
52 register_t abp_r0; /* r0 from the boot loader */
53 register_t abp_r1; /* r1 from the boot loader */
54 register_t abp_r2; /* r2 from the boot loader */
55 register_t abp_r3; /* r3 from the boot loader */
56 vm_offset_t abp_physaddr; /* The kernel physical address */
57 vm_offset_t abp_pagetable; /* The early page table */
58 };
59
60 void arm_vector_init(vm_offset_t, int);
61 void fork_trampoline(void);
62 void identify_arm_cpu(void);
63 void *initarm(struct arm_boot_params *);
64
65 extern char btext[];
66 extern char etext[];
67 int badaddr_read(void *, size_t, void *);
68 #endif /* !MACHINE_CPU_H */
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