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: Rusty Russell <rusty@rustcorp.com.au>

Documentation/lguest/lguest.c

@@ -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

@@ -1,6 +1,7 @@
 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

@@ -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

@@ -1,5 +1,33 @@
+#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

@@ -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*/

include/asm-x86/e820_64.h

@@ -11,27 +11,7 @@
 #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
-
 #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 unsigned long find_e820_area(unsigned long start, unsigned long end, 
 				    unsigned size);
 extern void add_memory_region(unsigned long start, unsigned long size, 

include/asm-x86/ist.h

@@ -17,17 +17,17 @@
  */
 
 
-#ifdef __KERNEL__
-
 #include <linux/types.h>
 
 struct ist_info {
-	u32 signature;
-	u32 command;
-	u32 event;
-	u32 perf_level;
+	__u32 signature;
+	__u32 command;
+	__u32 event;
+	__u32 perf_level;
 };
 
+#ifdef __KERNEL__
+
 extern struct ist_info ist_info;
 
 #endif	/* __KERNEL__ */

include/linux/Kbuild

@@ -186,6 +186,7 @@ unifdef-y += cyclades.h
 unifdef-y += dccp.h
 unifdef-y += dirent.h
 unifdef-y += dlm.h
+unifdef-y += edd.h
 unifdef-y += elfcore.h
 unifdef-y += errno.h
 unifdef-y += errqueue.h
@@ -306,6 +307,7 @@ unifdef-y += rtc.h
 unifdef-y += rtnetlink.h
 unifdef-y += scc.h
 unifdef-y += sched.h
+unifdef-y += screen_info.h
 unifdef-y += sdla.h
 unifdef-y += selinux_netlink.h
 unifdef-y += sem.h

include/linux/apm_bios.h

@@ -16,29 +16,29 @@
  * General Public License for more details.
  */
 
-typedef unsigned short	apm_event_t;
-typedef unsigned short	apm_eventinfo_t;
+#include <linux/types.h>
+
+struct apm_bios_info {
+	__u16	version;
+	__u16	cseg;
+	__u32	offset;
+	__u16	cseg_16;
+	__u16	dseg;
+	__u16	flags;
+	__u16	cseg_len;
+	__u16	cseg_16_len;
+	__u16	dseg_len;
+};
 
 #ifdef __KERNEL__
 
-#include <linux/types.h>
+typedef unsigned short	apm_event_t;
+typedef unsigned short	apm_eventinfo_t;
 
 #define APM_CS		(GDT_ENTRY_APMBIOS_BASE * 8)
 #define APM_CS_16	(APM_CS + 8)
 #define APM_DS		(APM_CS_16 + 8)
 
-struct apm_bios_info {
-	u16	version;
-	u16	cseg;
-	u32	offset;
-	u16	cseg_16;
-	u16	dseg;
-	u16	flags;
-	u16	cseg_len;
-	u16	cseg_16_len;
-	u16	dseg_len;
-};
-
 /* Results of APM Installation Check */
 #define APM_16_BIT_SUPPORT	0x0001
 #define APM_32_BIT_SUPPORT	0x0002