Linux kernel mirror (for testing)
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1#ifndef _ASM_X86_SETUP_H
2#define _ASM_X86_SETUP_H
3
4#ifdef __KERNEL__
5
6#define COMMAND_LINE_SIZE 2048
7
8#ifdef __i386__
9
10#include <linux/pfn.h>
11/*
12 * Reserved space for vmalloc and iomap - defined in asm/page.h
13 */
14#define MAXMEM_PFN PFN_DOWN(MAXMEM)
15#define MAX_NONPAE_PFN (1 << 20)
16
17#endif /* __i386__ */
18
19#define PARAM_SIZE 4096 /* sizeof(struct boot_params) */
20
21#define OLD_CL_MAGIC 0xA33F
22#define OLD_CL_ADDRESS 0x020 /* Relative to real mode data */
23#define NEW_CL_POINTER 0x228 /* Relative to real mode data */
24
25#ifndef __ASSEMBLY__
26#include <asm/bootparam.h>
27#include <asm/x86_init.h>
28
29/* Interrupt control for vSMPowered x86_64 systems */
30#ifdef CONFIG_X86_64
31void vsmp_init(void);
32#else
33static inline void vsmp_init(void) { }
34#endif
35
36void setup_bios_corruption_check(void);
37
38#ifdef CONFIG_X86_VISWS
39extern void visws_early_detect(void);
40#else
41static inline void visws_early_detect(void) { }
42#endif
43
44extern unsigned long saved_video_mode;
45
46extern void reserve_standard_io_resources(void);
47extern void i386_reserve_resources(void);
48extern void setup_default_timer_irq(void);
49
50#ifdef CONFIG_X86_MRST
51extern void x86_mrst_early_setup(void);
52#else
53static inline void x86_mrst_early_setup(void) { }
54#endif
55
56#ifdef CONFIG_X86_INTEL_CE
57extern void x86_ce4100_early_setup(void);
58#else
59static inline void x86_ce4100_early_setup(void) { }
60#endif
61
62#ifndef _SETUP
63
64/*
65 * This is set up by the setup-routine at boot-time
66 */
67extern struct boot_params boot_params;
68
69/*
70 * Do NOT EVER look at the BIOS memory size location.
71 * It does not work on many machines.
72 */
73#define LOWMEMSIZE() (0x9f000)
74
75/* exceedingly early brk-like allocator */
76extern unsigned long _brk_end;
77void *extend_brk(size_t size, size_t align);
78
79/*
80 * Reserve space in the brk section. The name must be unique within
81 * the file, and somewhat descriptive. The size is in bytes. Must be
82 * used at file scope.
83 *
84 * (This uses a temp function to wrap the asm so we can pass it the
85 * size parameter; otherwise we wouldn't be able to. We can't use a
86 * "section" attribute on a normal variable because it always ends up
87 * being @progbits, which ends up allocating space in the vmlinux
88 * executable.)
89 */
90#define RESERVE_BRK(name,sz) \
91 static void __section(.discard.text) __used notrace \
92 __brk_reservation_fn_##name##__(void) { \
93 asm volatile ( \
94 ".pushsection .brk_reservation,\"aw\",@nobits;" \
95 ".brk." #name ":" \
96 " 1:.skip %c0;" \
97 " .size .brk." #name ", . - 1b;" \
98 " .popsection" \
99 : : "i" (sz)); \
100 }
101
102/* Helper for reserving space for arrays of things */
103#define RESERVE_BRK_ARRAY(type, name, entries) \
104 type *name; \
105 RESERVE_BRK(name, sizeof(type) * entries)
106
107extern void probe_roms(void);
108#ifdef __i386__
109
110void __init i386_start_kernel(void);
111
112#else
113void __init x86_64_start_kernel(char *real_mode);
114void __init x86_64_start_reservations(char *real_mode_data);
115
116#endif /* __i386__ */
117#endif /* _SETUP */
118#else
119#define RESERVE_BRK(name,sz) \
120 .pushsection .brk_reservation,"aw",@nobits; \
121.brk.name: \
1221: .skip sz; \
123 .size .brk.name,.-1b; \
124 .popsection
125#endif /* __ASSEMBLY__ */
126#endif /* __KERNEL__ */
127
128#endif /* _ASM_X86_SETUP_H */