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 9#define SETUP_EFI 4 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) 27#define XLF_EFI_KEXEC (1<<4) 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, 163 X86_SUBARCH_INTEL_MID, 164 X86_SUBARCH_CE4100, 165 X86_NR_SUBARCHS, 166}; 167 168#endif /* __ASSEMBLY__ */ 169 170#endif /* _ASM_X86_BOOTPARAM_H */ 171