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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/x86/include/asm/bootparam.h
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#ifndef _ASM_X86_BOOTPARAM_H

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#define _ASM_X86_BOOTPARAM_H

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#include <linux/types.h>

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#include <linux/screen_info.h>

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#include <linux/apm_bios.h>

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#include <linux/edd.h>

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#include <asm/e820.h>

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#include <asm/ist.h>

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#include <video/edid.h>

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/* setup data types */

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#define SETUP_NONE			0

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#define SETUP_E820_EXT			1

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#define SETUP_DTB			2

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/* extensible setup data list node */

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struct setup_data {

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	__u64 next;

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	__u32 type;

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	__u32 len;

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	__u8 data[0];

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};

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struct setup_header {

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	__u8	setup_sects;

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	__u16	root_flags;

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	__u32	syssize;

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	__u16	ram_size;

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#define RAMDISK_IMAGE_START_MASK	0x07FF

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#define RAMDISK_PROMPT_FLAG		0x8000

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#define RAMDISK_LOAD_FLAG		0x4000

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	__u16	vid_mode;

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	__u16	root_dev;

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	__u16	boot_flag;

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	__u16	jump;

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	__u32	header;

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	__u16	version;

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	__u32	realmode_swtch;

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	__u16	start_sys;

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	__u16	kernel_version;

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	__u8	type_of_loader;

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	__u8	loadflags;

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#define LOADED_HIGH	(1<<0)

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#define QUIET_FLAG	(1<<5)

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#define KEEP_SEGMENTS	(1<<6)

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#define CAN_USE_HEAP	(1<<7)

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	__u16	setup_move_size;

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	__u32	code32_start;

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	__u32	ramdisk_image;

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	__u32	ramdisk_size;

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	__u32	bootsect_kludge;

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	__u16	heap_end_ptr;

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	__u8	ext_loader_ver;

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	__u8	ext_loader_type;

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	__u32	cmd_line_ptr;

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	__u32	initrd_addr_max;

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	__u32	kernel_alignment;

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	__u8	relocatable_kernel;

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	__u8	_pad2[3];

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	__u32	cmdline_size;

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	__u32	hardware_subarch;

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	__u64	hardware_subarch_data;

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	__u32	payload_offset;

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	__u32	payload_length;

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	__u64	setup_data;

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} __attribute__((packed));

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struct sys_desc_table {

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	__u16 length;

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	__u8  table[14];

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};

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/* Gleaned from OFW's set-parameters in cpu/x86/pc/linux.fth */

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struct olpc_ofw_header {

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	__u32 ofw_magic;	/* OFW signature */

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	__u32 ofw_version;

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	__u32 cif_handler;	/* callback into OFW */

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	__u32 irq_desc_table;

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} __attribute__((packed));

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struct efi_info {

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	__u32 efi_loader_signature;

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	__u32 efi_systab;

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	__u32 efi_memdesc_size;

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	__u32 efi_memdesc_version;

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	__u32 efi_memmap;

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	__u32 efi_memmap_size;

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	__u32 efi_systab_hi;

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	__u32 efi_memmap_hi;

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};

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/* The so-called "zeropage" */

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struct boot_params {

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	struct screen_info screen_info;			/* 0x000 */

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	struct apm_bios_info apm_bios_info;		/* 0x040 */

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	__u8  _pad2[4];					/* 0x054 */

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	__u64  tboot_addr;				/* 0x058 */

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	struct ist_info ist_info;			/* 0x060 */

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

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

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

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	struct sys_desc_table sys_desc_table;		/* 0x0a0 */

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	struct olpc_ofw_header olpc_ofw_header;		/* 0x0b0 */

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	__u8  _pad4[128];				/* 0x0c0 */

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	struct edid_info edid_info;			/* 0x140 */

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	struct efi_info efi_info;			/* 0x1c0 */

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	__u32 alt_mem_k;				/* 0x1e0 */

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

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	__u8  e820_entries;				/* 0x1e8 */

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	__u8  eddbuf_entries;				/* 0x1e9 */

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	__u8  edd_mbr_sig_buf_entries;			/* 0x1ea */

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

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

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

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

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

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

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

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

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} __attribute__((packed));

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enum {

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	X86_SUBARCH_PC = 0,

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	X86_SUBARCH_LGUEST,

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	X86_SUBARCH_XEN,

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	X86_SUBARCH_MRST,

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	X86_SUBARCH_CE4100,

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	X86_NR_SUBARCHS,

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};

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#endif /* _ASM_X86_BOOTPARAM_H */

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