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_VARS 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 28 #ifndef __ASSEMBLY__ 29 30 #include <linux/types.h> 31 #include <linux/screen_info.h> 32 #include <linux/apm_bios.h> 33 #include <linux/edd.h> 34 #include <asm/e820.h> 35 #include <asm/ist.h> 36 #include <video/edid.h> 37 38 /* extensible setup data list node */ 39 struct setup_data { 40 __u64 next; 41 __u32 type; 42 __u32 len; 43 __u8 data[0]; 44 }; 45 46 struct setup_header { 47 __u8 setup_sects; 48 __u16 root_flags; 49 __u32 syssize; 50 __u16 ram_size; 51 __u16 vid_mode; 52 __u16 root_dev; 53 __u16 boot_flag; 54 __u16 jump; 55 __u32 header; 56 __u16 version; 57 __u32 realmode_swtch; 58 __u16 start_sys; 59 __u16 kernel_version; 60 __u8 type_of_loader; 61 __u8 loadflags; 62 __u16 setup_move_size; 63 __u32 code32_start; 64 __u32 ramdisk_image; 65 __u32 ramdisk_size; 66 __u32 bootsect_kludge; 67 __u16 heap_end_ptr; 68 __u8 ext_loader_ver; 69 __u8 ext_loader_type; 70 __u32 cmd_line_ptr; 71 __u32 initrd_addr_max; 72 __u32 kernel_alignment; 73 __u8 relocatable_kernel; 74 __u8 min_alignment; 75 __u16 xloadflags; 76 __u32 cmdline_size; 77 __u32 hardware_subarch; 78 __u64 hardware_subarch_data; 79 __u32 payload_offset; 80 __u32 payload_length; 81 __u64 setup_data; 82 __u64 pref_address; 83 __u32 init_size; 84 __u32 handover_offset; 85 } __attribute__((packed)); 86 87 struct sys_desc_table { 88 __u16 length; 89 __u8 table[14]; 90 }; 91 92 /* Gleaned from OFW's set-parameters in cpu/x86/pc/linux.fth */ 93 struct olpc_ofw_header { 94 __u32 ofw_magic; /* OFW signature */ 95 __u32 ofw_version; 96 __u32 cif_handler; /* callback into OFW */ 97 __u32 irq_desc_table; 98 } __attribute__((packed)); 99 100 struct efi_info { 101 __u32 efi_loader_signature; 102 __u32 efi_systab; 103 __u32 efi_memdesc_size; 104 __u32 efi_memdesc_version; 105 __u32 efi_memmap; 106 __u32 efi_memmap_size; 107 __u32 efi_systab_hi; 108 __u32 efi_memmap_hi; 109 }; 110 111 /* The so-called "zeropage" */ 112 struct boot_params { 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 */ 136 /* 137 * The sentinel is set to a nonzero value (0xff) in header.S. 138 * 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. 146 */ 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)); 157 158 enum { 159 X86_SUBARCH_PC = 0, 160 X86_SUBARCH_LGUEST, 161 X86_SUBARCH_XEN, 162 X86_SUBARCH_MRST, 163 X86_SUBARCH_CE4100, 164 X86_NR_SUBARCHS, 165 }; 166 167 #endif /* __ASSEMBLY__ */ 168 169 #endif /* _ASM_X86_BOOTPARAM_H */ 170