1 #ifndef _ASM_X86_BOOTPARAM_H
2 #define _ASM_X86_BOOTPARAM_H
3 
4 #include <linux/types.h>
5 #include <linux/screen_info.h>
6 #include <linux/apm_bios.h>
7 #include <linux/edd.h>
8 #include <asm/e820.h>
9 #include <asm/ist.h>
10 #include <video/edid.h>
11 
12 /* setup data types */
13 #define SETUP_NONE			0
14 #define SETUP_E820_EXT			1
15 #define SETUP_DTB			2
16 
17 /* extensible setup data list node */
18 struct setup_data {
19 	__u64 next;
20 	__u32 type;
21 	__u32 len;
22 	__u8 data[0];
23 };
24 
25 struct setup_header {
26 	__u8	setup_sects;
27 	__u16	root_flags;
28 	__u32	syssize;
29 	__u16	ram_size;
30 #define RAMDISK_IMAGE_START_MASK	0x07FF
31 #define RAMDISK_PROMPT_FLAG		0x8000
32 #define RAMDISK_LOAD_FLAG		0x4000
33 	__u16	vid_mode;
34 	__u16	root_dev;
35 	__u16	boot_flag;
36 	__u16	jump;
37 	__u32	header;
38 	__u16	version;
39 	__u32	realmode_swtch;
40 	__u16	start_sys;
41 	__u16	kernel_version;
42 	__u8	type_of_loader;
43 	__u8	loadflags;
44 #define LOADED_HIGH	(1<<0)
45 #define QUIET_FLAG	(1<<5)
46 #define KEEP_SEGMENTS	(1<<6)
47 #define CAN_USE_HEAP	(1<<7)
48 	__u16	setup_move_size;
49 	__u32	code32_start;
50 	__u32	ramdisk_image;
51 	__u32	ramdisk_size;
52 	__u32	bootsect_kludge;
53 	__u16	heap_end_ptr;
54 	__u8	ext_loader_ver;
55 	__u8	ext_loader_type;
56 	__u32	cmd_line_ptr;
57 	__u32	initrd_addr_max;
58 	__u32	kernel_alignment;
59 	__u8	relocatable_kernel;
60 	__u8	_pad2[3];
61 	__u32	cmdline_size;
62 	__u32	hardware_subarch;
63 	__u64	hardware_subarch_data;
64 	__u32	payload_offset;
65 	__u32	payload_length;
66 	__u64	setup_data;
67 } __attribute__((packed));
68 
69 struct sys_desc_table {
70 	__u16 length;
71 	__u8  table[14];
72 };
73 
74 /* Gleaned from OFW's set-parameters in cpu/x86/pc/linux.fth */
75 struct olpc_ofw_header {
76 	__u32 ofw_magic;	/* OFW signature */
77 	__u32 ofw_version;
78 	__u32 cif_handler;	/* callback into OFW */
79 	__u32 irq_desc_table;
80 } __attribute__((packed));
81 
82 struct efi_info {
83 	__u32 efi_loader_signature;
84 	__u32 efi_systab;
85 	__u32 efi_memdesc_size;
86 	__u32 efi_memdesc_version;
87 	__u32 efi_memmap;
88 	__u32 efi_memmap_size;
89 	__u32 efi_systab_hi;
90 	__u32 efi_memmap_hi;
91 };
92 
93 /* The so-called "zeropage" */
94 struct boot_params {
95 	struct screen_info screen_info;			/* 0x000 */
96 	struct apm_bios_info apm_bios_info;		/* 0x040 */
97 	__u8  _pad2[4];					/* 0x054 */
98 	__u64  tboot_addr;				/* 0x058 */
99 	struct ist_info ist_info;			/* 0x060 */
100 	__u8  _pad3[16];				/* 0x070 */
101 	__u8  hd0_info[16];	/* obsolete! */		/* 0x080 */
102 	__u8  hd1_info[16];	/* obsolete! */		/* 0x090 */
103 	struct sys_desc_table sys_desc_table;		/* 0x0a0 */
104 	struct olpc_ofw_header olpc_ofw_header;		/* 0x0b0 */
105 	__u8  _pad4[128];				/* 0x0c0 */
106 	struct edid_info edid_info;			/* 0x140 */
107 	struct efi_info efi_info;			/* 0x1c0 */
108 	__u32 alt_mem_k;				/* 0x1e0 */
109 	__u32 scratch;		/* Scratch field! */	/* 0x1e4 */
110 	__u8  e820_entries;				/* 0x1e8 */
111 	__u8  eddbuf_entries;				/* 0x1e9 */
112 	__u8  edd_mbr_sig_buf_entries;			/* 0x1ea */
113 	__u8  _pad6[6];					/* 0x1eb */
114 	struct setup_header hdr;    /* setup header */	/* 0x1f1 */
115 	__u8  _pad7[0x290-0x1f1-sizeof(struct setup_header)];
116 	__u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX];	/* 0x290 */
117 	struct e820entry e820_map[E820MAX];		/* 0x2d0 */
118 	__u8  _pad8[48];				/* 0xcd0 */
119 	struct edd_info eddbuf[EDDMAXNR];		/* 0xd00 */
120 	__u8  _pad9[276];				/* 0xeec */
121 } __attribute__((packed));
122 
123 enum {
124 	X86_SUBARCH_PC = 0,
125 	X86_SUBARCH_LGUEST,
126 	X86_SUBARCH_XEN,
127 	X86_SUBARCH_MRST,
128 	X86_SUBARCH_CE4100,
129 	X86_NR_SUBARCHS,
130 };
131 
132 
133 
134 #endif /* _ASM_X86_BOOTPARAM_H */
135