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gerrit-public.fairphone.software / platform / external / kernel-headers / 57b517b34818d9d385013896f7a5d646042d331b / . / original / uapi / asm-x86 / asm / bootparam.h
blob: 225b0988043a0a78ac9092a9af7a265122c685cd [file] [log] [blame]
Christopher Ferris0437c522013-11-07 14:16:29 -0800[diff] [blame]1#ifndef _ASM_X86_BOOTPARAM_H
2#define _ASM_X86_BOOTPARAM_H
3
4/* setup_data types */
5#define SETUP_NONE 0
6#define SETUP_E820_EXT 1
7#define SETUP_DTB 2
8#define SETUP_PCI 3
Christopher Ferrise0845012014-07-09 14:58:51 -0700[diff] [blame]9#define SETUP_EFI 4
Christopher Ferris0437c522013-11-07 14:16:29 -0800[diff] [blame]10
11/* ram_size flags */
12#define RAMDISK_IMAGE_START_MASK 0x07FF
13#define RAMDISK_PROMPT_FLAG 0x8000
14#define RAMDISK_LOAD_FLAG 0x4000
15
16/* loadflags */
17#define LOADED_HIGH (1<<0)
18#define QUIET_FLAG (1<<5)
19#define KEEP_SEGMENTS (1<<6)
20#define CAN_USE_HEAP (1<<7)
21
22/* xloadflags */
23#define XLF_KERNEL_64 (1<<0)
24#define XLF_CAN_BE_LOADED_ABOVE_4G (1<<1)
25#define XLF_EFI_HANDOVER_32 (1<<2)
26#define XLF_EFI_HANDOVER_64 (1<<3)
Christopher Ferrise0845012014-07-09 14:58:51 -0700[diff] [blame]27#define XLF_EFI_KEXEC (1<<4)
Christopher Ferris0437c522013-11-07 14:16:29 -0800[diff] [blame]28
29#ifndef __ASSEMBLY__
30
31#include <linux/types.h>
32#include <linux/screen_info.h>
33#include <linux/apm_bios.h>
34#include <linux/edd.h>
35#include <asm/e820.h>
36#include <asm/ist.h>
37#include <video/edid.h>
38
39/* extensible setup data list node */
40struct setup_data {
41 __u64 next;
42 __u32 type;
43 __u32 len;
44 __u8 data[0];
45};
46
47struct setup_header {
48 __u8 setup_sects;
49 __u16 root_flags;
50 __u32 syssize;
51 __u16 ram_size;
52 __u16 vid_mode;
53 __u16 root_dev;
54 __u16 boot_flag;
55 __u16 jump;
56 __u32 header;
57 __u16 version;
58 __u32 realmode_swtch;
59 __u16 start_sys;
60 __u16 kernel_version;
61 __u8 type_of_loader;
62 __u8 loadflags;
63 __u16 setup_move_size;
64 __u32 code32_start;
65 __u32 ramdisk_image;
66 __u32 ramdisk_size;
67 __u32 bootsect_kludge;
68 __u16 heap_end_ptr;
69 __u8 ext_loader_ver;
70 __u8 ext_loader_type;
71 __u32 cmd_line_ptr;
72 __u32 initrd_addr_max;
73 __u32 kernel_alignment;
74 __u8 relocatable_kernel;
75 __u8 min_alignment;
76 __u16 xloadflags;
77 __u32 cmdline_size;
78 __u32 hardware_subarch;
79 __u64 hardware_subarch_data;
80 __u32 payload_offset;
81 __u32 payload_length;
82 __u64 setup_data;
83 __u64 pref_address;
84 __u32 init_size;
85 __u32 handover_offset;
86} __attribute__((packed));
87
88struct sys_desc_table {
89 __u16 length;
90 __u8 table[14];
91};
92
93/* Gleaned from OFW's set-parameters in cpu/x86/pc/linux.fth */
94struct olpc_ofw_header {
95 __u32 ofw_magic; /* OFW signature */
96 __u32 ofw_version;
97 __u32 cif_handler; /* callback into OFW */
98 __u32 irq_desc_table;
99} __attribute__((packed));
100
101struct efi_info {
102 __u32 efi_loader_signature;
103 __u32 efi_systab;
104 __u32 efi_memdesc_size;
105 __u32 efi_memdesc_version;
106 __u32 efi_memmap;
107 __u32 efi_memmap_size;
108 __u32 efi_systab_hi;
109 __u32 efi_memmap_hi;
110};
111
112/* The so-called "zeropage" */
113struct boot_params {
114 struct screen_info screen_info; /* 0x000 */
115 struct apm_bios_info apm_bios_info; /* 0x040 */
116 __u8 _pad2[4]; /* 0x054 */
117 __u64 tboot_addr; /* 0x058 */
118 struct ist_info ist_info; /* 0x060 */
119 __u8 _pad3[16]; /* 0x070 */
120 __u8 hd0_info[16]; /* obsolete! */ /* 0x080 */
121 __u8 hd1_info[16]; /* obsolete! */ /* 0x090 */
122 struct sys_desc_table sys_desc_table; /* 0x0a0 */
123 struct olpc_ofw_header olpc_ofw_header; /* 0x0b0 */
124 __u32 ext_ramdisk_image; /* 0x0c0 */
125 __u32 ext_ramdisk_size; /* 0x0c4 */
126 __u32 ext_cmd_line_ptr; /* 0x0c8 */
127 __u8 _pad4[116]; /* 0x0cc */
128 struct edid_info edid_info; /* 0x140 */
129 struct efi_info efi_info; /* 0x1c0 */
130 __u32 alt_mem_k; /* 0x1e0 */
131 __u32 scratch; /* Scratch field! */ /* 0x1e4 */
132 __u8 e820_entries; /* 0x1e8 */
133 __u8 eddbuf_entries; /* 0x1e9 */
134 __u8 edd_mbr_sig_buf_entries; /* 0x1ea */
135 __u8 kbd_status; /* 0x1eb */
136 __u8 _pad5[3]; /* 0x1ec */
137 /*
138 * The sentinel is set to a nonzero value (0xff) in header.S.
139 *
140 * A bootloader is supposed to only take setup_header and put
141 * it into a clean boot_params buffer. If it turns out that
142 * it is clumsy or too generous with the buffer, it most
143 * probably will pick up the sentinel variable too. The fact
144 * that this variable then is still 0xff will let kernel
145 * know that some variables in boot_params are invalid and
146 * kernel should zero out certain portions of boot_params.
147 */
148 __u8 sentinel; /* 0x1ef */
149 __u8 _pad6[1]; /* 0x1f0 */
150 struct setup_header hdr; /* setup header */ /* 0x1f1 */
151 __u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)];
152 __u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */
153 struct e820entry e820_map[E820MAX]; /* 0x2d0 */
154 __u8 _pad8[48]; /* 0xcd0 */
155 struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */
156 __u8 _pad9[276]; /* 0xeec */
157} __attribute__((packed));
158
159enum {
160 X86_SUBARCH_PC = 0,
161 X86_SUBARCH_LGUEST,
162 X86_SUBARCH_XEN,
Christopher Ferrise0845012014-07-09 14:58:51 -0700[diff] [blame]163 X86_SUBARCH_INTEL_MID,
Christopher Ferris0437c522013-11-07 14:16:29 -0800[diff] [blame]164 X86_SUBARCH_CE4100,
165 X86_NR_SUBARCHS,
166};
167
168#endif /* __ASSEMBLY__ */
169
170#endif /* _ASM_X86_BOOTPARAM_H */