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 <asm/video/edid.h> 11 12 /* setup data types */ 13 enum { 14 SETUP_NONE = 0, 15 SETUP_E820_EXT, 16 SETUP_DTB, 17 }; 18 19 /* extensible setup data list node */ 20 struct setup_data { 21 __u64 next; 22 __u32 type; 23 __u32 len; 24 __u8 data[0]; 25 }; 26 27 /** 28 * struct setup_header - Information needed by Linux to boot 29 * 30 * See https://www.kernel.org/doc/html/latest/x86/boot.html 31 */ 32 struct setup_header { 33 __u8 setup_sects; 34 __u16 root_flags; 35 __u32 syssize; 36 __u16 ram_size; 37 #define RAMDISK_IMAGE_START_MASK 0x07FF 38 #define RAMDISK_PROMPT_FLAG 0x8000 39 #define RAMDISK_LOAD_FLAG 0x4000 40 __u16 vid_mode; 41 __u16 root_dev; 42 __u16 boot_flag; 43 __u16 jump; 44 __u32 header; 45 __u16 version; 46 __u32 realmode_swtch; 47 __u16 start_sys; 48 __u16 kernel_version; 49 __u8 type_of_loader; 50 __u8 loadflags; 51 #define LOADED_HIGH BIT(0) 52 #define KASLR_FLAG BIT(1) 53 #define QUIET_FLAG BIT(5) 54 #define KEEP_SEGMENTS BIT(6) /* Obsolete */ 55 #define CAN_USE_HEAP BIT(7) 56 __u16 setup_move_size; 57 __u32 code32_start; 58 __u32 ramdisk_image; 59 __u32 ramdisk_size; 60 __u32 bootsect_kludge; /* Obsolete */ 61 __u16 heap_end_ptr; 62 __u8 ext_loader_ver; 63 __u8 ext_loader_type; 64 __u32 cmd_line_ptr; 65 __u32 initrd_addr_max; 66 __u32 kernel_alignment; 67 __u8 relocatable_kernel; 68 u8 min_alignment; 69 #define XLF_KERNEL_64 BIT(0) 70 #define XLF_CAN_BE_LOADED_ABOVE_4G BIT(1) 71 #define XLF_EFI_HANDOVER_32 BIT(2) 72 #define XLF_EFI_HANDOVER_64 BIT(3) 73 #define XLF_EFI_KEXEC BIT(4) 74 u16 xloadflags; 75 __u32 cmdline_size; 76 __u32 hardware_subarch; 77 __u64 hardware_subarch_data; 78 __u32 payload_offset; 79 __u32 payload_length; 80 __u64 setup_data; 81 __u64 pref_address; 82 __u32 init_size; 83 __u32 handover_offset; 84 u32 kernel_info_offset; 85 } __attribute__((packed)); 86 87 struct sys_desc_table { 88 __u16 length; 89 __u8 table[14]; 90 }; 91 92 struct efi_info { 93 __u32 efi_loader_signature; 94 __u32 efi_systab; 95 __u32 efi_memdesc_size; 96 __u32 efi_memdesc_version; 97 __u32 efi_memmap; 98 __u32 efi_memmap_size; 99 __u32 efi_systab_hi; 100 __u32 efi_memmap_hi; 101 }; 102 103 /* The so-called "zeropage" */ 104 struct boot_params { 105 struct screen_info screen_info; /* 0x000 */ 106 struct apm_bios_info apm_bios_info; /* 0x040 */ 107 __u8 _pad2[4]; /* 0x054 */ 108 __u64 tboot_addr; /* 0x058 */ 109 struct ist_info ist_info; /* 0x060 */ 110 __u64 acpi_rsdp_addr; /* 0x070 */ 111 __u8 _pad3[8]; /* 0x078 */ 112 __u8 hd0_info[16]; /* obsolete! */ /* 0x080 */ 113 __u8 hd1_info[16]; /* obsolete! */ /* 0x090 */ 114 struct sys_desc_table sys_desc_table; /* 0x0a0 */ 115 __u8 _pad4[144]; /* 0x0b0 */ 116 struct edid_info edid_info; /* 0x140 */ 117 struct efi_info efi_info; /* 0x1c0 */ 118 __u32 alt_mem_k; /* 0x1e0 */ 119 __u32 scratch; /* Scratch field! */ /* 0x1e4 */ 120 __u8 e820_entries; /* 0x1e8 */ 121 __u8 eddbuf_entries; /* 0x1e9 */ 122 __u8 edd_mbr_sig_buf_entries; /* 0x1ea */ 123 __u8 _pad6[6]; /* 0x1eb */ 124 struct setup_header hdr; /* setup header */ /* 0x1f1 */ 125 __u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)]; 126 __u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */ 127 struct e820_entry e820_map[E820MAX]; /* 0x2d0 */ 128 __u8 _pad8[48]; /* 0xcd0 */ 129 struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */ 130 __u8 _pad9[276]; /* 0xeec */ 131 } __attribute__((packed)); 132 133 enum { 134 X86_SUBARCH_PC = 0, 135 X86_SUBARCH_LGUEST, 136 X86_SUBARCH_XEN, 137 X86_SUBARCH_INTEL_MID, 138 X86_SUBARCH_CE4100, 139 X86_NR_SUBARCHS, 140 }; 141 #endif /* _ASM_X86_BOOTPARAM_H */ 142