xref: /freebsd/sys/arm/include/machdep.h (revision 32100375a661c1e16588ddfa7b90ca8d26cb9786)
1 /* $NetBSD: machdep.h,v 1.7 2002/02/21 02:52:21 thorpej Exp $ */
2 /* $FreeBSD$ */
3 
4 #ifndef _MACHDEP_BOOT_MACHDEP_H_
5 #define _MACHDEP_BOOT_MACHDEP_H_
6 
7 /* Structs that need to be initialised by initarm */
8 #if __ARM_ARCH >= 6
9 extern vm_offset_t irqstack;
10 extern vm_offset_t undstack;
11 extern vm_offset_t abtstack;
12 #else
13 struct pv_addr;
14 extern struct pv_addr irqstack;
15 extern struct pv_addr undstack;
16 extern struct pv_addr abtstack;
17 #endif
18 
19 /* Define various stack sizes in pages */
20 #define IRQ_STACK_SIZE	1
21 #define ABT_STACK_SIZE	1
22 #define UND_STACK_SIZE	1
23 
24 /* misc prototypes used by the many arm machdeps */
25 struct trapframe;
26 void arm_lock_cache_line(vm_offset_t);
27 void init_proc0(vm_offset_t kstack);
28 void halt(void);
29 void abort_handler(struct trapframe *, int );
30 void set_stackptrs(int cpu);
31 void undefinedinstruction_bounce(struct trapframe *);
32 
33 /* Early boot related helper functions */
34 struct arm_boot_params;
35 vm_offset_t default_parse_boot_param(struct arm_boot_params *abp);
36 vm_offset_t fake_preload_metadata(struct arm_boot_params *abp,
37     void *dtb_ptr, size_t dtb_size);
38 vm_offset_t parse_boot_param(struct arm_boot_params *abp);
39 void arm_parse_fdt_bootargs(void);
40 void arm_print_kenv(void);
41 
42 void arm_generic_initclocks(void);
43 int arm_get_vfpstate(struct thread *td, void *args);
44 
45 /* Board-specific attributes */
46 void board_set_serial(uint64_t);
47 void board_set_revision(uint32_t);
48 
49 int arm_predict_branch(void *, u_int, register_t, register_t *,
50     u_int (*)(void*, int), u_int (*)(void*, vm_offset_t, u_int*));
51 
52 #ifdef PLATFORM
53 typedef void delay_func(int, void *);
54 void arm_set_delay(delay_func *, void *);
55 #endif
56 
57 #ifdef EFI
58 struct efi_map_header;
59 struct mem_region;
60 void arm_add_efi_map_entries(struct efi_map_header *efihdr,
61     struct mem_region *mr, int *mrcnt);
62 #endif
63 
64 /*
65  * Symbols created by ldscript.arm which are accessible in the kernel as global
66  * symbols. They have uint8 type because they mark the byte location where the
67  * corresponding data starts or ends (in the end case, it's the next byte
68  * following the data, so the data size is end-start).  These are listed below
69  * in the order they occur within the kernel (i.e., the address of each variable
70  * should be greater than any of the ones before it).
71  */
72 extern uint8_t _start;		/* Kernel entry point in locore.S */
73 extern uint8_t _etext;		/* text segment end */
74 extern uint8_t _extab_start;	/* unwind table start */
75 extern uint8_t _exidx_start;	/* unwind index start */
76 extern uint8_t _exidx_end;	/* unwind index end */
77 extern uint8_t _start_ctors;	/* ctors data start */
78 extern uint8_t _stop_ctors;	/* ctors data end */
79 extern uint8_t _edata;		/* data segment end */
80 extern uint8_t __bss_start;	/* bss segment start */
81 extern uint8_t _ebss;		/* bss segment end */
82 extern uint8_t _end;		/* End of kernel (text+ctors+unwind+data+bss) */
83 
84 #endif /* !_MACHINE_MACHDEP_H_ */
85