1 #ifndef _ASM_X86_BOOTPARAM_H
2 #define _ASM_X86_BOOTPARAM_H
6 #define SETUP_E820_EXT 1
9 #define SETUP_EFI_VARS 4
12 #define RAMDISK_IMAGE_START_MASK 0x07FF
13 #define RAMDISK_PROMPT_FLAG 0x8000
14 #define RAMDISK_LOAD_FLAG 0x4000
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)
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)
30 #include <linux/types.h>
31 #include <linux/screen_info.h>
32 #include <linux/apm_bios.h>
33 #include <linux/edd.h>
36 #include <video/edid.h>
38 /* extensible setup data list node */
62 __u16 setup_move_size;
66 __u32 bootsect_kludge;
71 __u32 initrd_addr_max;
72 __u32 kernel_alignment;
73 __u8 relocatable_kernel;
77 __u32 hardware_subarch;
78 __u64 hardware_subarch_data;
84 __u32 handover_offset;
85 } __attribute__((packed));
87 struct sys_desc_table {
92 /* Gleaned from OFW's set-parameters in cpu/x86/pc/linux.fth */
93 struct olpc_ofw_header {
94 __u32 ofw_magic; /* OFW signature */
96 __u32 cif_handler; /* callback into OFW */
98 } __attribute__((packed));
101 __u32 efi_loader_signature;
103 __u32 efi_memdesc_size;
104 __u32 efi_memdesc_version;
106 __u32 efi_memmap_size;
111 /* The so-called "zeropage" */
113 struct screen_info screen_info; /* 0x000 */
114 struct apm_bios_info apm_bios_info; /* 0x040 */
115 __u8 _pad2[4]; /* 0x054 */
116 __u64 tboot_addr; /* 0x058 */
117 struct ist_info ist_info; /* 0x060 */
118 __u8 _pad3[16]; /* 0x070 */
119 __u8 hd0_info[16]; /* obsolete! */ /* 0x080 */
120 __u8 hd1_info[16]; /* obsolete! */ /* 0x090 */
121 struct sys_desc_table sys_desc_table; /* 0x0a0 */
122 struct olpc_ofw_header olpc_ofw_header; /* 0x0b0 */
123 __u32 ext_ramdisk_image; /* 0x0c0 */
124 __u32 ext_ramdisk_size; /* 0x0c4 */
125 __u32 ext_cmd_line_ptr; /* 0x0c8 */
126 __u8 _pad4[116]; /* 0x0cc */
127 struct edid_info edid_info; /* 0x140 */
128 struct efi_info efi_info; /* 0x1c0 */
129 __u32 alt_mem_k; /* 0x1e0 */
130 __u32 scratch; /* Scratch field! */ /* 0x1e4 */
131 __u8 e820_entries; /* 0x1e8 */
132 __u8 eddbuf_entries; /* 0x1e9 */
133 __u8 edd_mbr_sig_buf_entries; /* 0x1ea */
134 __u8 kbd_status; /* 0x1eb */
135 __u8 _pad5[3]; /* 0x1ec */
137 * The sentinel is set to a nonzero value (0xff) in header.S.
139 * A bootloader is supposed to only take setup_header and put
140 * it into a clean boot_params buffer. If it turns out that
141 * it is clumsy or too generous with the buffer, it most
142 * probably will pick up the sentinel variable too. The fact
143 * that this variable then is still 0xff will let kernel
144 * know that some variables in boot_params are invalid and
145 * kernel should zero out certain portions of boot_params.
147 __u8 sentinel; /* 0x1ef */
148 __u8 _pad6[1]; /* 0x1f0 */
149 struct setup_header hdr; /* setup header */ /* 0x1f1 */
150 __u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)];
151 __u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */
152 struct e820entry e820_map[E820MAX]; /* 0x2d0 */
153 __u8 _pad8[48]; /* 0xcd0 */
154 struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */
155 __u8 _pad9[276]; /* 0xeec */
156 } __attribute__((packed));
167 #endif /* __ASSEMBLY__ */
169 #endif /* _ASM_X86_BOOTPARAM_H */