163 lines
5.0 KiB
C
163 lines
5.0 KiB
C
#ifndef X86_LINUX_H
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#define X86_LINUX_H
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#define E820MAP 0x2d0 /* our map */
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#define E820MAX 32 /* number of entries in E820MAP */
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#define E820NR 0x1e8 /* # entries in E820MAP */
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#ifndef ASSEMBLY
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struct e820entry {
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uint64_t addr; /* start of memory segment */
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uint64_t size; /* size of memory segment */
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uint32_t type; /* type of memory segment */
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#define E820_RAM 1
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#define E820_RESERVED 2
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#define E820_ACPI 3 /* usable as RAM once ACPI tables have been read */
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#define E820_NVS 4
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} __attribute__((packed));
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/* FIXME expand on drive_info_struct... */
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struct drive_info_struct {
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uint8_t dummy[32];
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};
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struct sys_desc_table {
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uint16_t length;
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uint8_t table[318];
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};
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struct apm_bios_info {
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uint16_t version; /* 0x40 */
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uint16_t cseg; /* 0x42 */
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uint32_t offset; /* 0x44 */
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uint16_t cseg_16; /* 0x48 */
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uint16_t dseg; /* 0x4a */
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uint16_t flags; /* 0x4c */
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uint16_t cseg_len; /* 0x4e */
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uint16_t cseg_16_len; /* 0x50 */
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uint16_t dseg_len; /* 0x52 */
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uint8_t reserved[44]; /* 0x54 */
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};
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struct x86_linux_param_header {
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uint8_t orig_x; /* 0x00 */
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uint8_t orig_y; /* 0x01 */
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uint16_t ext_mem_k; /* 0x02 -- EXT_MEM_K sits here */
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uint16_t orig_video_page; /* 0x04 */
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uint8_t orig_video_mode; /* 0x06 */
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uint8_t orig_video_cols; /* 0x07 */
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uint16_t unused2; /* 0x08 */
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uint16_t orig_video_ega_bx; /* 0x0a */
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uint16_t unused3; /* 0x0c */
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uint8_t orig_video_lines; /* 0x0e */
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uint8_t orig_video_isVGA; /* 0x0f */
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uint16_t orig_video_points; /* 0x10 */
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/* VESA graphic mode -- linear frame buffer */
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uint16_t lfb_width; /* 0x12 */
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uint16_t lfb_height; /* 0x14 */
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uint16_t lfb_depth; /* 0x16 */
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uint32_t lfb_base; /* 0x18 */
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uint32_t lfb_size; /* 0x1c */
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uint16_t cl_magic; /* 0x20 */
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#define CL_MAGIC_VALUE 0xA33F
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uint16_t cl_offset; /* 0x22 */
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uint16_t lfb_linelength; /* 0x24 */
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uint8_t red_size; /* 0x26 */
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uint8_t red_pos; /* 0x27 */
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uint8_t green_size; /* 0x28 */
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uint8_t green_pos; /* 0x29 */
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uint8_t blue_size; /* 0x2a */
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uint8_t blue_pos; /* 0x2b */
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uint8_t rsvd_size; /* 0x2c */
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uint8_t rsvd_pos; /* 0x2d */
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uint16_t vesapm_seg; /* 0x2e */
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uint16_t vesapm_off; /* 0x30 */
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uint16_t pages; /* 0x32 */
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uint8_t reserved4[12]; /* 0x34 -- 0x3f reserved for future expansion */
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struct apm_bios_info apm_bios_info; /* 0x40 */
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struct drive_info_struct drive_info; /* 0x80 */
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struct sys_desc_table sys_desc_table; /* 0xa0 */
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uint32_t alt_mem_k; /* 0x1e0 */
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uint8_t reserved5[4]; /* 0x1e4 */
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uint8_t e820_map_nr; /* 0x1e8 */
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uint8_t reserved6[8]; /* 0x1e9 */
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uint8_t setup_sects; /* 0x1f1 */
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uint16_t mount_root_rdonly; /* 0x1f2 */
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uint8_t reserved7[4]; /* 0x1f4 */
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uint16_t ramdisk_flags; /* 0x1f8 */
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#define RAMDISK_IMAGE_START_MASK 0x07FF
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#define RAMDISK_PROMPT_FLAG 0x8000
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#define RAMDISK_LOAD_FLAG 0x4000
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uint16_t vid_mode; /* 0x1fa */
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uint16_t root_dev; /* 0x1fc */
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uint8_t reserved9[1]; /* 0x1fe */
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uint8_t aux_device_info; /* 0x1ff */
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/* 2.00+ */
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uint8_t reserved10[2]; /* 0x200 */
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uint8_t header_magic[4]; /* 0x202 */
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uint16_t protocol_version; /* 0x206 */
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uint8_t reserved11[8]; /* 0x208 */
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uint8_t loader_type; /* 0x210 */
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#define LOADER_TYPE_LOADLIN 1
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#define LOADER_TYPE_BOOTSECT_LOADER 2
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#define LOADER_TYPE_SYSLINUX 3
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#define LOADER_TYPE_ETHERBOOT 4
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#define LOADER_TYPE_UNKNOWN 0xFF
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uint8_t loader_flags; /* 0x211 */
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uint8_t reserved12[2]; /* 0x212 */
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uint32_t kernel_start; /* 0x214 */
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uint32_t initrd_start; /* 0x218 */
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uint32_t initrd_size; /* 0x21c */
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uint8_t reserved13[4]; /* 0x220 */
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/* 2.01+ */
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uint16_t heap_end_ptr; /* 0x224 */
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uint8_t reserved14[2]; /* 0x226 */
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/* 2.02+ */
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uint32_t cmd_line_ptr; /* 0x228 */
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/* 2.03+ */
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uint32_t initrd_addr_max; /* 0x22c */
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uint8_t reserved15[160]; /* 0x230 */
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struct e820entry e820_map[E820MAX]; /* 0x2d0 */
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/* 0x550 */
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#define COMMAND_LINE_SIZE 256
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};
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struct x86_linux_header {
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uint8_t reserved1[0x1f1]; /* 0x000 */
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uint8_t setup_sects; /* 0x1f1 */
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uint16_t root_flags; /* 0x1f2 */
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uint8_t reserved2[6]; /* 0x1f4 */
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uint16_t vid_mode; /* 0x1fa */
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uint16_t root_dev; /* 0x1fc */
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uint16_t boot_sector_magic; /* 0x1fe */
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/* 2.00+ */
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uint8_t reserved3[2]; /* 0x200 */
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uint8_t header_magic[4]; /* 0x202 */
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uint16_t protocol_version; /* 0x206 */
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uint32_t realmode_swtch; /* 0x208 */
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uint16_t start_sys; /* 0x20c */
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uint16_t kver_addr; /* 0x20e */
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uint8_t type_of_loader; /* 0x210 */
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uint8_t loadflags; /* 0x211 */
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uint16_t setup_move_size; /* 0x212 */
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uint32_t code32_start; /* 0x214 */
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uint32_t ramdisk_image; /* 0x218 */
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uint32_t ramdisk_size; /* 0x21c */
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uint8_t reserved4[4]; /* 0x220 */
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/* 2.01+ */
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uint16_t heap_end_ptr; /* 0x224 */
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uint8_t reserved5[2]; /* 0x226 */
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/* 2.02+ */
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uint32_t cmd_line_ptr; /* 0x228 */
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/* 2.03+ */
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uint32_t initrd_addr_max; /* 0x22c */
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uint8_t tail[32*1024]; /* 0x230 */
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} __attribute__ ((packed));
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#endif /* ASSEMBLY */
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#endif /* X86_LINUX_H */
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