11965aae3SH. Peter Anvin #ifndef _ASM_X86_SETUP_H 21965aae3SH. Peter Anvin #define _ASM_X86_SETUP_H 3bb898558SAl Viro 4dbca1df4SCyrill Gorcunov #ifdef __KERNEL__ 5dbca1df4SCyrill Gorcunov 6bb898558SAl Viro #define COMMAND_LINE_SIZE 2048 7bb898558SAl Viro 8bb898558SAl Viro #ifdef __i386__ 9bb898558SAl Viro 10bb898558SAl Viro #include <linux/pfn.h> 11bb898558SAl Viro /* 12bb898558SAl Viro * Reserved space for vmalloc and iomap - defined in asm/page.h 13bb898558SAl Viro */ 14bb898558SAl Viro #define MAXMEM_PFN PFN_DOWN(MAXMEM) 15bb898558SAl Viro #define MAX_NONPAE_PFN (1 << 20) 16bb898558SAl Viro 17bb898558SAl Viro #endif /* __i386__ */ 18bb898558SAl Viro 19bb898558SAl Viro #define PARAM_SIZE 4096 /* sizeof(struct boot_params) */ 20bb898558SAl Viro 21bb898558SAl Viro #define OLD_CL_MAGIC 0xA33F 22bb898558SAl Viro #define OLD_CL_ADDRESS 0x020 /* Relative to real mode data */ 23bb898558SAl Viro #define NEW_CL_POINTER 0x228 /* Relative to real mode data */ 24bb898558SAl Viro 25bb898558SAl Viro #ifndef __ASSEMBLY__ 26bb898558SAl Viro #include <asm/bootparam.h> 27845b3944SThomas Gleixner #include <asm/x86_init.h> 28bb898558SAl Viro 2915c55443SJaswinder Singh Rajput /* Interrupt control for vSMPowered x86_64 systems */ 3070511134SRavikiran G Thirumalai #ifdef CONFIG_X86_64 3115c55443SJaswinder Singh Rajput void vsmp_init(void); 32129d8bc8SYinghai Lu #else 33129d8bc8SYinghai Lu static inline void vsmp_init(void) { } 34129d8bc8SYinghai Lu #endif 3515c55443SJaswinder Singh Rajput 3615c55443SJaswinder Singh Rajput void setup_bios_corruption_check(void); 3715c55443SJaswinder Singh Rajput 3815c55443SJaswinder Singh Rajput #ifdef CONFIG_X86_VISWS 3915c55443SJaswinder Singh Rajput extern void visws_early_detect(void); 4015c55443SJaswinder Singh Rajput #else 4115c55443SJaswinder Singh Rajput static inline void visws_early_detect(void) { } 4215c55443SJaswinder Singh Rajput #endif 4315c55443SJaswinder Singh Rajput 4415c55443SJaswinder Singh Rajput extern unsigned long saved_video_mode; 4515c55443SJaswinder Singh Rajput 468fee697dSThomas Gleixner extern void reserve_standard_io_resources(void); 478fee697dSThomas Gleixner extern void i386_reserve_resources(void); 48845b3944SThomas Gleixner extern void setup_default_timer_irq(void); 498fee697dSThomas Gleixner 503f4110a4SThomas Gleixner #ifdef CONFIG_X86_MRST 513f4110a4SThomas Gleixner extern void x86_mrst_early_setup(void); 523f4110a4SThomas Gleixner #else 533f4110a4SThomas Gleixner static inline void x86_mrst_early_setup(void) { } 543f4110a4SThomas Gleixner #endif 553f4110a4SThomas Gleixner 56c751e17bSThomas Gleixner #ifdef CONFIG_X86_INTEL_CE 57c751e17bSThomas Gleixner extern void x86_ce4100_early_setup(void); 58c751e17bSThomas Gleixner #else 59c751e17bSThomas Gleixner static inline void x86_ce4100_early_setup(void) { } 60c751e17bSThomas Gleixner #endif 61c751e17bSThomas Gleixner 62bb898558SAl Viro #ifndef _SETUP 63bb898558SAl Viro 64bb898558SAl Viro /* 65bb898558SAl Viro * This is set up by the setup-routine at boot-time 66bb898558SAl Viro */ 67bb898558SAl Viro extern struct boot_params boot_params; 68bb898558SAl Viro 69bb898558SAl Viro /* 70bb898558SAl Viro * Do NOT EVER look at the BIOS memory size location. 71bb898558SAl Viro * It does not work on many machines. 72bb898558SAl Viro */ 73bb898558SAl Viro #define LOWMEMSIZE() (0x9f000) 74bb898558SAl Viro 7593dbda7cSJeremy Fitzhardinge /* exceedingly early brk-like allocator */ 7693dbda7cSJeremy Fitzhardinge extern unsigned long _brk_end; 7793dbda7cSJeremy Fitzhardinge void *extend_brk(size_t size, size_t align); 7893dbda7cSJeremy Fitzhardinge 79796216a5SJeremy Fitzhardinge /* 80796216a5SJeremy Fitzhardinge * Reserve space in the brk section. The name must be unique within 81796216a5SJeremy Fitzhardinge * the file, and somewhat descriptive. The size is in bytes. Must be 82796216a5SJeremy Fitzhardinge * used at file scope. 83796216a5SJeremy Fitzhardinge * 84796216a5SJeremy Fitzhardinge * (This uses a temp function to wrap the asm so we can pass it the 85796216a5SJeremy Fitzhardinge * size parameter; otherwise we wouldn't be able to. We can't use a 86796216a5SJeremy Fitzhardinge * "section" attribute on a normal variable because it always ends up 87796216a5SJeremy Fitzhardinge * being @progbits, which ends up allocating space in the vmlinux 88796216a5SJeremy Fitzhardinge * executable.) 89796216a5SJeremy Fitzhardinge */ 90796216a5SJeremy Fitzhardinge #define RESERVE_BRK(name,sz) \ 91c7f52cdcSJeremy Fitzhardinge static void __section(.discard.text) __used \ 92796216a5SJeremy Fitzhardinge __brk_reservation_fn_##name##__(void) { \ 93796216a5SJeremy Fitzhardinge asm volatile ( \ 94796216a5SJeremy Fitzhardinge ".pushsection .brk_reservation,\"aw\",@nobits;" \ 950b1c723dSJeremy Fitzhardinge ".brk." #name ":" \ 96796216a5SJeremy Fitzhardinge " 1:.skip %c0;" \ 970b1c723dSJeremy Fitzhardinge " .size .brk." #name ", . - 1b;" \ 98796216a5SJeremy Fitzhardinge " .popsection" \ 99796216a5SJeremy Fitzhardinge : : "i" (sz)); \ 100796216a5SJeremy Fitzhardinge } 101796216a5SJeremy Fitzhardinge 102161b0275SJeremy Fitzhardinge /* Helper for reserving space for arrays of things */ 103161b0275SJeremy Fitzhardinge #define RESERVE_BRK_ARRAY(type, name, entries) \ 104161b0275SJeremy Fitzhardinge type *name; \ 105161b0275SJeremy Fitzhardinge RESERVE_BRK(name, sizeof(type) * entries) 106161b0275SJeremy Fitzhardinge 107*5d94e81fSDan Williams extern void probe_roms(void); 108bb898558SAl Viro #ifdef __i386__ 109bb898558SAl Viro 110bb898558SAl Viro void __init i386_start_kernel(void); 111bb898558SAl Viro 112bb898558SAl Viro #else 113bb898558SAl Viro void __init x86_64_start_kernel(char *real_mode); 114bb898558SAl Viro void __init x86_64_start_reservations(char *real_mode_data); 115bb898558SAl Viro 116bb898558SAl Viro #endif /* __i386__ */ 117bb898558SAl Viro #endif /* _SETUP */ 118796216a5SJeremy Fitzhardinge #else 119796216a5SJeremy Fitzhardinge #define RESERVE_BRK(name,sz) \ 120796216a5SJeremy Fitzhardinge .pushsection .brk_reservation,"aw",@nobits; \ 1210b1c723dSJeremy Fitzhardinge .brk.name: \ 122796216a5SJeremy Fitzhardinge 1: .skip sz; \ 1230b1c723dSJeremy Fitzhardinge .size .brk.name,.-1b; \ 124796216a5SJeremy Fitzhardinge .popsection 125bb898558SAl Viro #endif /* __ASSEMBLY__ */ 126bb898558SAl Viro #endif /* __KERNEL__ */ 127bb898558SAl Viro 1281965aae3SH. Peter Anvin #endif /* _ASM_X86_SETUP_H */ 129