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Commit ee8e7cfe authored by Rusty Russell's avatar Rusty Russell
Browse files

Make asm-x86/bootparam.h includable from userspace. 



To actually write a bootloader (or, say, the lguest launcher)
currently requires duplication of these structures.  Making them
includable from userspace is much nicer.

We merge the common userspace-required definitions of e820_32/64.h
into e820.h for export.

Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent 9525ca02

Documentation/lguest/lguest.c

+1 −1
Original line number Diff line number Diff line
@@ -46,7 +46,7 @@ typedef uint32_t u32; 
typedef uint16_t u16;

typedef uint8_t u8;

#include "../../include/linux/lguest_launcher.h"

#include "../../include/asm-x86/e820_32.h"

#include "../../include/asm-x86/e820.h"

/*:*/



#define PAGE_PRESENT 0x7 	/* Present, RW, Execute */

include/asm-x86/Kbuild

+3 −0
Original line number Diff line number Diff line 
include include/asm-generic/Kbuild.asm



header-y += boot.h

header-y += bootparam.h

header-y += debugreg.h

header-y += ldt.h

header-y += msr-index.h
@@ -14,8 +15,10 @@ unifdef-y += a.out_32.h 
unifdef-y += a.out_64.h

unifdef-y += byteorder_32.h

unifdef-y += byteorder_64.h

unifdef-y += e820.h

unifdef-y += elf_32.h

unifdef-y += elf_64.h

unifdef-y += ist.h

unifdef-y += mce.h

unifdef-y += msgbuf_32.h

unifdef-y += msgbuf_64.h

include/asm-x86/bootparam.h

+54 −54
Original line number Diff line number Diff line
@@ -10,85 +10,85 @@ 
#include <video/edid.h>



struct setup_header {

	u8	setup_sects;

	u16	root_flags;

	u32	syssize;

	u16	ram_size;

	__u8	setup_sects;

	__u16	root_flags;

	__u32	syssize;

	__u16	ram_size;

#define RAMDISK_IMAGE_START_MASK	0x07FF

#define RAMDISK_PROMPT_FLAG		0x8000

#define RAMDISK_LOAD_FLAG		0x4000

	u16	vid_mode;

	u16	root_dev;

	u16	boot_flag;

	u16	jump;

	u32	header;

	u16	version;

	u32	realmode_swtch;

	u16	start_sys;

	u16	kernel_version;

	u8	type_of_loader;

	u8	loadflags;

	__u16	vid_mode;

	__u16	root_dev;

	__u16	boot_flag;

	__u16	jump;

	__u32	header;

	__u16	version;

	__u32	realmode_swtch;

	__u16	start_sys;

	__u16	kernel_version;

	__u8	type_of_loader;

	__u8	loadflags;

#define LOADED_HIGH	(1<<0)

#define KEEP_SEGMENTS	(1<<6)

#define CAN_USE_HEAP	(1<<7)

	u16	setup_move_size;

	u32	code32_start;

	u32	ramdisk_image;

	u32	ramdisk_size;

	u32	bootsect_kludge;

	u16	heap_end_ptr;

	u16	_pad1;

	u32	cmd_line_ptr;

	u32	initrd_addr_max;

	u32	kernel_alignment;

	u8	relocatable_kernel;

	u8	_pad2[3];

	u32	cmdline_size;

	u32	hardware_subarch;

	u64	hardware_subarch_data;

	__u16	setup_move_size;

	__u32	code32_start;

	__u32	ramdisk_image;

	__u32	ramdisk_size;

	__u32	bootsect_kludge;

	__u16	heap_end_ptr;

	__u16	_pad1;

	__u32	cmd_line_ptr;

	__u32	initrd_addr_max;

	__u32	kernel_alignment;

	__u8	relocatable_kernel;

	__u8	_pad2[3];

	__u32	cmdline_size;

	__u32	hardware_subarch;

	__u64	hardware_subarch_data;

} __attribute__((packed));



struct sys_desc_table {

	u16 length;

	u8  table[14];

	__u16 length;

	__u8  table[14];

};



struct efi_info {

	u32 _pad1;

	u32 efi_systab;

	u32 efi_memdesc_size;

	u32 efi_memdesc_version;

	u32 efi_memmap;

	u32 efi_memmap_size;

	u32 _pad2[2];

	__u32 _pad1;

	__u32 efi_systab;

	__u32 efi_memdesc_size;

	__u32 efi_memdesc_version;

	__u32 efi_memmap;

	__u32 efi_memmap_size;

	__u32 _pad2[2];

};



/* The so-called "zeropage" */

struct boot_params {

	struct screen_info screen_info;			/* 0x000 */

	struct apm_bios_info apm_bios_info;		/* 0x040 */

	u8  _pad2[12];					/* 0x054 */

	__u8  _pad2[12];				/* 0x054 */

	struct ist_info ist_info;			/* 0x060 */

	u8  _pad3[16];					/* 0x070 */

	u8  hd0_info[16];	/* obsolete! */		/* 0x080 */

	u8  hd1_info[16];	/* obsolete! */		/* 0x090 */

	__u8  _pad3[16];				/* 0x070 */

	__u8  hd0_info[16];	/* obsolete! */		/* 0x080 */

	__u8  hd1_info[16];	/* obsolete! */		/* 0x090 */

	struct sys_desc_table sys_desc_table;		/* 0x0a0 */

	u8  _pad4[144];					/* 0x0b0 */

	__u8  _pad4[144];				/* 0x0b0 */

	struct edid_info edid_info;			/* 0x140 */

	struct efi_info efi_info;			/* 0x1c0 */

	u32 alt_mem_k;					/* 0x1e0 */

	u32 scratch;		/* Scratch field! */	/* 0x1e4 */

	u8  e820_entries;				/* 0x1e8 */

	u8  eddbuf_entries;				/* 0x1e9 */

	u8  edd_mbr_sig_buf_entries;			/* 0x1ea */

	u8  _pad6[6];					/* 0x1eb */

	__u32 alt_mem_k;				/* 0x1e0 */

	__u32 scratch;		/* Scratch field! */	/* 0x1e4 */

	__u8  e820_entries;				/* 0x1e8 */

	__u8  eddbuf_entries;				/* 0x1e9 */

	__u8  edd_mbr_sig_buf_entries;			/* 0x1ea */

	__u8  _pad6[6];					/* 0x1eb */

	struct setup_header hdr;    /* setup header */	/* 0x1f1 */

	u8  _pad7[0x290-0x1f1-sizeof(struct setup_header)];

	u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX];	/* 0x290 */

	__u8  _pad7[0x290-0x1f1-sizeof(struct setup_header)];

	__u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX];	/* 0x290 */

	struct e820entry e820_map[E820MAX];		/* 0x2d0 */

	u8  _pad8[48];					/* 0xcd0 */

	__u8  _pad8[48];				/* 0xcd0 */

	struct edd_info eddbuf[EDDMAXNR];		/* 0xd00 */

	u8  _pad9[276];					/* 0xeec */

	__u8  _pad9[276];				/* 0xeec */

} __attribute__((packed));



#endif /* _ASM_BOOTPARAM_H */

include/asm-x86/e820.h

+28 −0
Original line number Diff line number Diff line 
#ifndef __ASM_E820_H

#define __ASM_E820_H

#define E820MAP	0x2d0		/* our map */

#define E820MAX	128		/* number of entries in E820MAP */

#define E820NR	0x1e8		/* # entries in E820MAP */



#define E820_RAM	1

#define E820_RESERVED	2

#define E820_ACPI	3

#define E820_NVS	4



#ifndef __ASSEMBLY__

struct e820entry {

	__u64 addr;	/* start of memory segment */

	__u64 size;	/* size of memory segment */

	__u32 type;	/* type of memory segment */

} __attribute__((packed));



struct e820map {

	__u32 nr_map;

	struct e820entry map[E820MAX];

};

#endif /* __ASSEMBLY__ */



#ifdef __KERNEL__

#ifdef CONFIG_X86_32

# include "e820_32.h"

#else

# include "e820_64.h"

#endif

#endif /* __KERNEL__ */



#endif  /* __ASM_E820_H */

include/asm-x86/e820_32.h

+0 −21
Original line number Diff line number Diff line
@@ -12,30 +12,10 @@ 
#ifndef __E820_HEADER

#define __E820_HEADER



#define E820MAP	0x2d0		/* our map */

#define E820MAX	128		/* number of entries in E820MAP */

#define E820NR	0x1e8		/* # entries in E820MAP */



#define E820_RAM	1

#define E820_RESERVED	2

#define E820_ACPI	3

#define E820_NVS	4



#define HIGH_MEMORY	(1024*1024)



#ifndef __ASSEMBLY__



struct e820entry {

	u64 addr;	/* start of memory segment */

	u64 size;	/* size of memory segment */

	u32 type;	/* type of memory segment */

} __attribute__((packed));



struct e820map {

	u32 nr_map;

	struct e820entry map[E820MAX];

};



extern struct e820map e820;



extern int e820_all_mapped(unsigned long start, unsigned long end,
@@ -56,5 +36,4 @@ static inline void e820_mark_nosave_regions(void) 
#endif



#endif/*!__ASSEMBLY__*/



#endif/*__E820_HEADER*/