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H. Peter Anvin1965aae2008-10-22 22:26:29 -07001#ifndef _ASM_X86_SETUP_H
2#define _ASM_X86_SETUP_H
Thomas Gleixneref685292007-10-23 22:37:24 +02003
David Howellsaf170c52012-12-14 22:37:13 +00004#include <uapi/asm/setup.h>
5
Thomas Gleixneref685292007-10-23 22:37:24 +02006#define COMMAND_LINE_SIZE 2048
7
Andi Kleena1ed4dd2013-08-05 15:02:38 -07008#include <linux/linkage.h>
9
Thomas Gleixneref685292007-10-23 22:37:24 +020010#ifdef __i386__
11
12#include <linux/pfn.h>
13/*
14 * Reserved space for vmalloc and iomap - defined in asm/page.h
15 */
16#define MAXMEM_PFN PFN_DOWN(MAXMEM)
17#define MAX_NONPAE_PFN (1 << 20)
18
Thomas Gleixneref685292007-10-23 22:37:24 +020019#endif /* __i386__ */
20
H. Peter Anvinfa76dab2007-10-23 22:37:25 +020021#define PARAM_SIZE 4096 /* sizeof(struct boot_params) */
22
23#define OLD_CL_MAGIC 0xA33F
24#define OLD_CL_ADDRESS 0x020 /* Relative to real mode data */
25#define NEW_CL_POINTER 0x228 /* Relative to real mode data */
26
Thomas Gleixneref685292007-10-23 22:37:24 +020027#ifndef __ASSEMBLY__
28#include <asm/bootparam.h>
Thomas Gleixner845b3942009-08-19 15:37:03 +020029#include <asm/x86_init.h>
Thomas Gleixneref685292007-10-23 22:37:24 +020030
Borislav Petkov5aa3d712013-12-04 20:50:42 +010031extern u64 relocated_ramdisk;
32
Jaswinder Singh Rajput15c55442009-02-02 21:59:19 +053033/* Interrupt control for vSMPowered x86_64 systems */
Ravikiran G Thirumalai70511132009-03-23 23:14:29 -070034#ifdef CONFIG_X86_64
Jaswinder Singh Rajput15c55442009-02-02 21:59:19 +053035void vsmp_init(void);
Yinghai Lu129d8bc2009-02-25 21:20:50 -080036#else
37static inline void vsmp_init(void) { }
38#endif
Jaswinder Singh Rajput15c55442009-02-02 21:59:19 +053039
40void setup_bios_corruption_check(void);
41
42#ifdef CONFIG_X86_VISWS
43extern void visws_early_detect(void);
Jaswinder Singh Rajput15c55442009-02-02 21:59:19 +053044#else
45static inline void visws_early_detect(void) { }
Jaswinder Singh Rajput15c55442009-02-02 21:59:19 +053046#endif
47
Jaswinder Singh Rajput15c55442009-02-02 21:59:19 +053048extern unsigned long saved_video_mode;
49
Thomas Gleixner8fee6972009-08-19 14:55:50 +020050extern void reserve_standard_io_resources(void);
51extern void i386_reserve_resources(void);
Thomas Gleixner845b3942009-08-19 15:37:03 +020052extern void setup_default_timer_irq(void);
Thomas Gleixner8fee6972009-08-19 14:55:50 +020053
Alan Cox933b9462011-12-17 17:43:40 +000054#ifdef CONFIG_X86_INTEL_MID
Kuppuswamy Sathyanarayanan712b6aa2013-10-17 15:35:29 -070055extern void x86_intel_mid_early_setup(void);
Thomas Gleixner3f4110a2009-08-29 14:54:20 +020056#else
Kuppuswamy Sathyanarayanan712b6aa2013-10-17 15:35:29 -070057static inline void x86_intel_mid_early_setup(void) { }
Thomas Gleixner3f4110a2009-08-29 14:54:20 +020058#endif
59
Thomas Gleixnerc751e172010-11-09 12:08:04 -080060#ifdef CONFIG_X86_INTEL_CE
61extern void x86_ce4100_early_setup(void);
62#else
63static inline void x86_ce4100_early_setup(void) { }
64#endif
65
H. Peter Anvinfa76dab2007-10-23 22:37:25 +020066#ifndef _SETUP
67
Thomas Gleixneref685292007-10-23 22:37:24 +020068/*
69 * This is set up by the setup-routine at boot-time
70 */
71extern struct boot_params boot_params;
72
Thomas Gleixneref685292007-10-23 22:37:24 +020073/*
74 * Do NOT EVER look at the BIOS memory size location.
75 * It does not work on many machines.
76 */
77#define LOWMEMSIZE() (0x9f000)
78
Jeremy Fitzhardinge93dbda72009-02-26 17:35:44 -080079/* exceedingly early brk-like allocator */
80extern unsigned long _brk_end;
81void *extend_brk(size_t size, size_t align);
82
Jeremy Fitzhardinge796216a2009-03-12 16:09:49 -070083/*
84 * Reserve space in the brk section. The name must be unique within
85 * the file, and somewhat descriptive. The size is in bytes. Must be
86 * used at file scope.
87 *
88 * (This uses a temp function to wrap the asm so we can pass it the
89 * size parameter; otherwise we wouldn't be able to. We can't use a
90 * "section" attribute on a normal variable because it always ends up
91 * being @progbits, which ends up allocating space in the vmlinux
92 * executable.)
93 */
94#define RESERVE_BRK(name,sz) \
Steven Rostedt2895cd22011-04-13 16:43:29 -040095 static void __section(.discard.text) __used notrace \
Jeremy Fitzhardinge796216a2009-03-12 16:09:49 -070096 __brk_reservation_fn_##name##__(void) { \
97 asm volatile ( \
98 ".pushsection .brk_reservation,\"aw\",@nobits;" \
Jeremy Fitzhardinge0b1c7232009-03-14 23:19:38 -070099 ".brk." #name ":" \
Jeremy Fitzhardinge796216a2009-03-12 16:09:49 -0700100 " 1:.skip %c0;" \
Jeremy Fitzhardinge0b1c7232009-03-14 23:19:38 -0700101 " .size .brk." #name ", . - 1b;" \
Jeremy Fitzhardinge796216a2009-03-12 16:09:49 -0700102 " .popsection" \
103 : : "i" (sz)); \
104 }
105
Jeremy Fitzhardinge161b0272010-09-02 19:35:22 -0700106/* Helper for reserving space for arrays of things */
107#define RESERVE_BRK_ARRAY(type, name, entries) \
108 type *name; \
109 RESERVE_BRK(name, sizeof(type) * entries)
110
Dan Williams5d94e812011-03-08 10:36:19 -0800111extern void probe_roms(void);
Yinghai Lu95a71a42008-06-18 17:27:08 -0700112#ifdef __i386__
113
Andi Kleena1ed4dd2013-08-05 15:02:38 -0700114asmlinkage void __init i386_start_kernel(void);
Yinghai Luf0d43102008-05-29 12:56:36 -0700115
Jeremy Fitzhardinge102e3b82008-06-25 00:19:09 -0400116#else
Andi Kleena1ed4dd2013-08-05 15:02:38 -0700117asmlinkage void __init x86_64_start_kernel(char *real_mode);
118asmlinkage void __init x86_64_start_reservations(char *real_mode_data);
Jeremy Fitzhardingef97013f2008-06-25 00:19:18 -0400119
Thomas Gleixneref685292007-10-23 22:37:24 +0200120#endif /* __i386__ */
H. Peter Anvinfa76dab2007-10-23 22:37:25 +0200121#endif /* _SETUP */
Jeremy Fitzhardinge796216a2009-03-12 16:09:49 -0700122#else
123#define RESERVE_BRK(name,sz) \
124 .pushsection .brk_reservation,"aw",@nobits; \
Jeremy Fitzhardinge0b1c7232009-03-14 23:19:38 -0700125.brk.name: \
Jeremy Fitzhardinge796216a2009-03-12 16:09:49 -07001261: .skip sz; \
Jeremy Fitzhardinge0b1c7232009-03-14 23:19:38 -0700127 .size .brk.name,.-1b; \
Jeremy Fitzhardinge796216a2009-03-12 16:09:49 -0700128 .popsection
Thomas Gleixneref685292007-10-23 22:37:24 +0200129#endif /* __ASSEMBLY__ */
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700130#endif /* _ASM_X86_SETUP_H */