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Linux kernel mirror (for testing)
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kernel
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linux
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);
40extern int is_visws_box(void);
41#else
42static inline void visws_early_detect(void) { }
43static inline int is_visws_box(void) { return 0; }
44#endif
45
46extern unsigned long saved_video_mode;
47
48extern void reserve_standard_io_resources(void);
49extern void i386_reserve_resources(void);
50extern void setup_default_timer_irq(void);
51
52#ifdef CONFIG_X86_MRST
53extern void x86_mrst_early_setup(void);
54#else
55static inline void x86_mrst_early_setup(void) { }
56#endif
57
58#ifndef _SETUP
59
60/*
61 * This is set up by the setup-routine at boot-time
62 */
63extern struct boot_params boot_params;
64
65/*
66 * Do NOT EVER look at the BIOS memory size location.
67 * It does not work on many machines.
68 */
69#define LOWMEMSIZE() (0x9f000)
70
71/* exceedingly early brk-like allocator */
72extern unsigned long _brk_end;
73void *extend_brk(size_t size, size_t align);
74
75/*
76 * Reserve space in the brk section. The name must be unique within
77 * the file, and somewhat descriptive. The size is in bytes. Must be
78 * used at file scope.
79 *
80 * (This uses a temp function to wrap the asm so we can pass it the
81 * size parameter; otherwise we wouldn't be able to. We can't use a
82 * "section" attribute on a normal variable because it always ends up
83 * being @progbits, which ends up allocating space in the vmlinux
84 * executable.)
85 */
86#define RESERVE_BRK(name,sz) \
87 static void __section(.discard) __used \
88 __brk_reservation_fn_##name##__(void) { \
89 asm volatile ( \
90 ".pushsection .brk_reservation,\"aw\",@nobits;" \
91 ".brk." #name ":" \
92 " 1:.skip %c0;" \
93 " .size .brk." #name ", . - 1b;" \
94 " .popsection" \
95 : : "i" (sz)); \
96 }
97
98#ifdef __i386__
99
100void __init i386_start_kernel(void);
101extern void probe_roms(void);
102
103#else
104void __init x86_64_start_kernel(char *real_mode);
105void __init x86_64_start_reservations(char *real_mode_data);
106
107#endif /* __i386__ */
108#endif /* _SETUP */
109#else
110#define RESERVE_BRK(name,sz) \
111 .pushsection .brk_reservation,"aw",@nobits; \
112.brk.name: \
1131: .skip sz; \
114 .size .brk.name,.-1b; \
115 .popsection
116#endif /* __ASSEMBLY__ */
117#endif /* __KERNEL__ */
118
119#endif /* _ASM_X86_SETUP_H */