1 #ifndef _ASM_X86_SETUP_H
2 #define _ASM_X86_SETUP_H
6 #define COMMAND_LINE_SIZE 2048
10 #include <linux/pfn.h>
12 * Reserved space for vmalloc and iomap - defined in asm/page.h
14 #define MAXMEM_PFN PFN_DOWN(MAXMEM)
15 #define MAX_NONPAE_PFN (1 << 20)
19 #define PARAM_SIZE 4096 /* sizeof(struct boot_params) */
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 */
26 #include <asm/bootparam.h>
27 #include <asm/x86_init.h>
29 /* Interrupt control for vSMPowered x86_64 systems */
33 static inline void vsmp_init(void) { }
36 void setup_bios_corruption_check(void);
38 #ifdef CONFIG_X86_VISWS
39 extern void visws_early_detect(void);
41 static inline void visws_early_detect(void) { }
44 extern unsigned long saved_video_mode;
46 extern void reserve_standard_io_resources(void);
47 extern void i386_reserve_resources(void);
48 extern void setup_default_timer_irq(void);
50 #ifdef CONFIG_X86_MRST
51 extern void x86_mrst_early_setup(void);
53 static inline void x86_mrst_early_setup(void) { }
59 * This is set up by the setup-routine at boot-time
61 extern struct boot_params boot_params;
64 * Do NOT EVER look at the BIOS memory size location.
65 * It does not work on many machines.
67 #define LOWMEMSIZE() (0x9f000)
69 /* exceedingly early brk-like allocator */
70 extern unsigned long _brk_end;
71 void *extend_brk(size_t size, size_t align);
74 * Reserve space in the brk section. The name must be unique within
75 * the file, and somewhat descriptive. The size is in bytes. Must be
78 * (This uses a temp function to wrap the asm so we can pass it the
79 * size parameter; otherwise we wouldn't be able to. We can't use a
80 * "section" attribute on a normal variable because it always ends up
81 * being @progbits, which ends up allocating space in the vmlinux
84 #define RESERVE_BRK(name,sz) \
85 static void __section(.discard.text) __used \
86 __brk_reservation_fn_##name##__(void) { \
88 ".pushsection .brk_reservation,\"aw\",@nobits;" \
91 " .size .brk." #name ", . - 1b;" \
98 void __init i386_start_kernel(void);
99 extern void probe_roms(void);
102 void __init x86_64_start_kernel(char *real_mode);
103 void __init x86_64_start_reservations(char *real_mode_data);
105 #endif /* __i386__ */
108 #define RESERVE_BRK(name,sz) \
109 .pushsection .brk_reservation,"aw",@nobits; \
112 .size .brk.name,.-1b; \
114 #endif /* __ASSEMBLY__ */
115 #endif /* __KERNEL__ */
117 #endif /* _ASM_X86_SETUP_H */