machdep.h revision 257669 
1/* $NetBSD: machdep.h,v 1.7 2002/02/21 02:52:21 thorpej Exp $ */
2/* $FreeBSD: head/sys/arm/include/machdep.h 257669 2013-11-05 02:57:34Z ian $ */
3
4#ifndef _MACHDEP_BOOT_MACHDEP_H_
5#define _MACHDEP_BOOT_MACHDEP_H_
6
7/* Structs that need to be initialised by initarm */
8struct pv_addr;
9extern struct pv_addr irqstack;
10extern struct pv_addr undstack;
11extern struct pv_addr abtstack;
12
13/* Define various stack sizes in pages */
14#define IRQ_STACK_SIZE	1
15#define ABT_STACK_SIZE	1
16#define UND_STACK_SIZE	1
17
18/* misc prototypes used by the many arm machdeps */
19struct trapframe;
20void arm_lock_cache_line(vm_offset_t);
21void init_proc0(vm_offset_t kstack);
22void halt(void);
23void data_abort_handler(struct trapframe *);
24void prefetch_abort_handler(struct trapframe *);
25void set_stackptrs(int cpu);
26void undefinedinstruction_bounce(struct trapframe *);
27
28/* Early boot related helper functions */
29struct arm_boot_params;
30vm_offset_t default_parse_boot_param(struct arm_boot_params *abp);
31vm_offset_t freebsd_parse_boot_param(struct arm_boot_params *abp);
32vm_offset_t linux_parse_boot_param(struct arm_boot_params *abp);
33vm_offset_t fake_preload_metadata(struct arm_boot_params *abp);
34vm_offset_t parse_boot_param(struct arm_boot_params *abp);
35
36/*
37 * Initialization functions called by the common initarm() function in
38 * arm/machdep.c (but not necessarily from the custom initarm() functions of
39 * older code).
40 *
41 *  - initarm_early_init() is called very early, after parsing the boot params
42 *    and after physical memory has been located and sized.
43 *
44 *  - platform_devmap_init() is called as one of the last steps of early virtual
45 *    memory initialization, shortly before the new page tables are installed.
46 *
47 *  - initarm_lastaddr() is called after platform_devmap_init(), and must return
48 *    the address of the first byte of unusable KVA space.  This allows a
49 *    platform to carve out of the top of the KVA space whatever reserves it
50 *    needs for things like static device mapping, and this is called to get the
51 *    value before calling pmap_bootstrap() which uses the value to size the
52 *    available KVA.
53 *
54 *  - initarm_gpio_init() is called after the static device mappings are
55 *    established and just before cninit().  The intention is that the routine
56 *    can do any hardware setup (such as gpio or pinmux) necessary to make the
57 *    console functional.
58 *
59 *  - initarm_late_init() is called just after cninit().  This is the first of
60 *    the init routines that can use printf() and expect the output to appear on
61 *    a standard console.
62 *
63 */
64void initarm_early_init(void);
65int initarm_devmap_init(void);
66vm_offset_t initarm_lastaddr(void);
67void initarm_gpio_init(void);
68void initarm_late_init(void);
69
70/* Board-specific attributes */
71void board_set_serial(uint64_t);
72void board_set_revision(uint32_t);
73
74/* Setup standard arrays */
75void arm_dump_avail_init( vm_offset_t memsize, size_t max);
76
77#endif /* !_MACHINE_MACHDEP_H_ */
78