1#ifndef X86_LINUX_H 2#define X86_LINUX_H 3 4#define E820MAP 0x2d0 /* our map */ 5#define E820MAX 32 /* number of entries in E820MAP */ 6#define E820NR 0x1e8 /* # entries in E820MAP */ 7 8#ifndef ASSEMBLY 9 10struct e820entry { 11 uint64_t addr; /* start of memory segment */ 12 uint64_t size; /* size of memory segment */ 13 uint32_t type; /* type of memory segment */ 14#define E820_RAM 1 15#define E820_RESERVED 2 16#define E820_ACPI 3 /* usable as RAM once ACPI tables have been read */ 17#define E820_NVS 4 18} __attribute__((packed)); 19 20/* FIXME expand on drive_info_struct... */ 21struct drive_info_struct { 22 uint8_t dummy[32]; 23}; 24struct sys_desc_table { 25 uint16_t length; 26 uint8_t table[318]; 27}; 28 29struct apm_bios_info { 30 uint16_t version; /* 0x40 */ 31 uint16_t cseg; /* 0x42 */ 32 uint32_t offset; /* 0x44 */ 33 uint16_t cseg_16; /* 0x48 */ 34 uint16_t dseg; /* 0x4a */ 35 uint16_t flags; /* 0x4c */ 36 uint16_t cseg_len; /* 0x4e */ 37 uint16_t cseg_16_len; /* 0x50 */ 38 uint16_t dseg_len; /* 0x52 */ 39 uint8_t reserved[44]; /* 0x54 */ 40}; 41 42 43struct x86_linux_param_header { 44 uint8_t orig_x; /* 0x00 */ 45 uint8_t orig_y; /* 0x01 */ 46 uint16_t ext_mem_k; /* 0x02 -- EXT_MEM_K sits here */ 47 uint16_t orig_video_page; /* 0x04 */ 48 uint8_t orig_video_mode; /* 0x06 */ 49 uint8_t orig_video_cols; /* 0x07 */ 50 uint16_t unused2; /* 0x08 */ 51 uint16_t orig_video_ega_bx; /* 0x0a */ 52 uint16_t unused3; /* 0x0c */ 53 uint8_t orig_video_lines; /* 0x0e */ 54 uint8_t orig_video_isVGA; /* 0x0f */ 55 uint16_t orig_video_points; /* 0x10 */ 56 57 /* VESA graphic mode -- linear frame buffer */ 58 uint16_t lfb_width; /* 0x12 */ 59 uint16_t lfb_height; /* 0x14 */ 60 uint16_t lfb_depth; /* 0x16 */ 61 uint32_t lfb_base; /* 0x18 */ 62 uint32_t lfb_size; /* 0x1c */ 63 uint16_t cl_magic; /* 0x20 */ 64#define CL_MAGIC_VALUE 0xA33F 65 uint16_t cl_offset; /* 0x22 */ 66 uint16_t lfb_linelength; /* 0x24 */ 67 uint8_t red_size; /* 0x26 */ 68 uint8_t red_pos; /* 0x27 */ 69 uint8_t green_size; /* 0x28 */ 70 uint8_t green_pos; /* 0x29 */ 71 uint8_t blue_size; /* 0x2a */ 72 uint8_t blue_pos; /* 0x2b */ 73 uint8_t rsvd_size; /* 0x2c */ 74 uint8_t rsvd_pos; /* 0x2d */ 75 uint16_t vesapm_seg; /* 0x2e */ 76 uint16_t vesapm_off; /* 0x30 */ 77 uint16_t pages; /* 0x32 */ 78 uint8_t reserved4[12]; /* 0x34 -- 0x3f reserved for future expansion */ 79 80 struct apm_bios_info apm_bios_info; /* 0x40 */ 81 struct drive_info_struct drive_info; /* 0x80 */ 82 struct sys_desc_table sys_desc_table; /* 0xa0 */ 83 uint32_t alt_mem_k; /* 0x1e0 */ 84 uint8_t reserved5[4]; /* 0x1e4 */ 85 uint8_t e820_map_nr; /* 0x1e8 */ 86 uint8_t reserved6[8]; /* 0x1e9 */ 87 uint8_t setup_sects; /* 0x1f1 */ 88 uint16_t mount_root_rdonly; /* 0x1f2 */ 89 uint8_t reserved7[4]; /* 0x1f4 */ 90 uint16_t ramdisk_flags; /* 0x1f8 */ 91#define RAMDISK_IMAGE_START_MASK 0x07FF 92#define RAMDISK_PROMPT_FLAG 0x8000 93#define RAMDISK_LOAD_FLAG 0x4000 94 uint16_t vid_mode; /* 0x1fa */ 95 uint16_t root_dev; /* 0x1fc */ 96 uint8_t reserved9[1]; /* 0x1fe */ 97 uint8_t aux_device_info; /* 0x1ff */ 98 /* 2.00+ */ 99 uint8_t reserved10[2]; /* 0x200 */ 100 uint8_t header_magic[4]; /* 0x202 */ 101 uint16_t protocol_version; /* 0x206 */ 102 uint8_t reserved11[8]; /* 0x208 */ 103 uint8_t loader_type; /* 0x210 */ 104#define LOADER_TYPE_LOADLIN 1 105#define LOADER_TYPE_BOOTSECT_LOADER 2 106#define LOADER_TYPE_SYSLINUX 3 107#define LOADER_TYPE_ETHERBOOT 4 108#define LOADER_TYPE_UNKNOWN 0xFF 109 uint8_t loader_flags; /* 0x211 */ 110 uint8_t reserved12[2]; /* 0x212 */ 111 uint32_t kernel_start; /* 0x214 */ 112 uint32_t initrd_start; /* 0x218 */ 113 uint32_t initrd_size; /* 0x21c */ 114 uint8_t reserved13[4]; /* 0x220 */ 115 /* 2.01+ */ 116 uint16_t heap_end_ptr; /* 0x224 */ 117 uint8_t reserved14[2]; /* 0x226 */ 118 /* 2.02+ */ 119 uint32_t cmd_line_ptr; /* 0x228 */ 120 /* 2.03+ */ 121 uint32_t initrd_addr_max; /* 0x22c */ 122 uint8_t reserved15[160]; /* 0x230 */ 123 struct e820entry e820_map[E820MAX]; /* 0x2d0 */ 124 /* 0x550 */ 125#define COMMAND_LINE_SIZE 256 126}; 127 128struct x86_linux_header { 129 uint8_t reserved1[0x1f1]; /* 0x000 */ 130 uint8_t setup_sects; /* 0x1f1 */ 131 uint16_t root_flags; /* 0x1f2 */ 132 uint8_t reserved2[6]; /* 0x1f4 */ 133 uint16_t vid_mode; /* 0x1fa */ 134 uint16_t root_dev; /* 0x1fc */ 135 uint16_t boot_sector_magic; /* 0x1fe */ 136 /* 2.00+ */ 137 uint8_t reserved3[2]; /* 0x200 */ 138 uint8_t header_magic[4]; /* 0x202 */ 139 uint16_t protocol_version; /* 0x206 */ 140 uint32_t realmode_swtch; /* 0x208 */ 141 uint16_t start_sys; /* 0x20c */ 142 uint16_t kver_addr; /* 0x20e */ 143 uint8_t type_of_loader; /* 0x210 */ 144 uint8_t loadflags; /* 0x211 */ 145 uint16_t setup_move_size; /* 0x212 */ 146 uint32_t code32_start; /* 0x214 */ 147 uint32_t ramdisk_image; /* 0x218 */ 148 uint32_t ramdisk_size; /* 0x21c */ 149 uint8_t reserved4[4]; /* 0x220 */ 150 /* 2.01+ */ 151 uint16_t heap_end_ptr; /* 0x224 */ 152 uint8_t reserved5[2]; /* 0x226 */ 153 /* 2.02+ */ 154 uint32_t cmd_line_ptr; /* 0x228 */ 155 /* 2.03+ */ 156 uint32_t initrd_addr_max; /* 0x22c */ 157 uint8_t tail[32*1024]; /* 0x230 */ 158} __attribute__ ((packed)); 159 160#endif /* ASSEMBLY */ 161 162#endif /* X86_LINUX_H */ 163