diff options
Diffstat (limited to 'include/x86/x86-linux.h')
| -rw-r--r-- | include/x86/x86-linux.h | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/include/x86/x86-linux.h b/include/x86/x86-linux.h new file mode 100644 index 0000000..9646102 --- /dev/null +++ b/include/x86/x86-linux.h @@ -0,0 +1,271 @@ +#ifndef X86_LINUX_H +#define X86_LINUX_H + +#define TENATIVE 0 /* Code that is tenatively correct but hasn't yet been officially accepted */ + +#define E820MAP 0x2d0 /* our map */ +#define E820NR 0x1e8 /* # entries in E820MAP */ + +#ifndef E820MAX +#define E820MAX 128 /* number of entries in E820MAP */ +#endif + +#ifndef ASSEMBLY + +#ifndef E820_RAM +struct e820entry { + uint64_t addr; /* start of memory segment */ + uint64_t size; /* size of memory segment */ + uint32_t type; /* type of memory segment */ +#define E820_RAM 1 +#define E820_RESERVED 2 +#define E820_ACPI 3 /* usable as RAM once ACPI tables have been read */ +#define E820_NVS 4 +#define E820_PMEM 7 +#define E820_PRAM 12 +} __attribute__((packed)); +#endif + +/* FIXME expand on drive_info_)struct... */ +struct drive_info_struct { + uint8_t dummy[32]; +}; +struct sys_desc_table { + uint16_t length; + uint8_t table[30]; +}; + +struct apm_bios_info { + uint16_t version; /* 0x40 */ + uint16_t cseg; /* 0x42 */ + uint32_t offset; /* 0x44 */ + uint16_t cseg_16; /* 0x48 */ + uint16_t dseg; /* 0x4a */ + uint16_t flags; /* 0x4c */ + uint16_t cseg_len; /* 0x4e */ + uint16_t cseg_16_len; /* 0x50 */ + uint16_t dseg_len; /* 0x52 */ +}; + +/* + * EDD stuff + */ + +#define EDD_MBR_SIG_MAX 16 +#define EDDMAXNR 6 /* number of edd_info structs starting at EDDBUF */ + +#define EDD_EXT_FIXED_DISK_ACCESS (1 << 0) +#define EDD_EXT_DEVICE_LOCKING_AND_EJECTING (1 << 1) +#define EDD_EXT_ENHANCED_DISK_DRIVE_SUPPORT (1 << 2) +#define EDD_EXT_64BIT_EXTENSIONS (1 << 3) + +#define EDD_DEVICE_PARAM_SIZE 74 + +struct edd_info { + uint8_t device; + uint8_t version; + uint16_t interface_support; + uint16_t legacy_max_cylinder; + uint8_t legacy_max_head; + uint8_t legacy_sectors_per_track; + uint8_t edd_device_params[EDD_DEVICE_PARAM_SIZE]; +} __attribute__ ((packed)); + +struct x86_linux_param_header { + uint8_t orig_x; /* 0x00 */ + uint8_t orig_y; /* 0x01 */ + uint16_t ext_mem_k; /* 0x02 -- EXT_MEM_K sits here */ + uint16_t orig_video_page; /* 0x04 */ + uint8_t orig_video_mode; /* 0x06 */ + uint8_t orig_video_cols; /* 0x07 */ + uint16_t unused2; /* 0x08 */ + uint16_t orig_video_ega_bx; /* 0x0a */ + uint16_t unused3; /* 0x0c */ + uint8_t orig_video_lines; /* 0x0e */ + uint8_t orig_video_isVGA; /* 0x0f */ + uint16_t orig_video_points; /* 0x10 */ + + /* VESA graphic mode -- linear frame buffer */ + uint16_t lfb_width; /* 0x12 */ + uint16_t lfb_height; /* 0x14 */ + uint16_t lfb_depth; /* 0x16 */ + uint32_t lfb_base; /* 0x18 */ + uint32_t lfb_size; /* 0x1c */ + uint16_t cl_magic; /* 0x20 */ +#define CL_MAGIC_VALUE 0xA33F + uint16_t cl_offset; /* 0x22 */ + uint16_t lfb_linelength; /* 0x24 */ + uint8_t red_size; /* 0x26 */ + uint8_t red_pos; /* 0x27 */ + uint8_t green_size; /* 0x28 */ + uint8_t green_pos; /* 0x29 */ + uint8_t blue_size; /* 0x2a */ + uint8_t blue_pos; /* 0x2b */ + uint8_t rsvd_size; /* 0x2c */ + uint8_t rsvd_pos; /* 0x2d */ + uint16_t vesapm_seg; /* 0x2e */ + uint16_t vesapm_off; /* 0x30 */ + uint16_t pages; /* 0x32 */ + uint16_t vesa_attributes; /* 0x34 */ + uint32_t capabilities; /* 0x36 */ + uint32_t ext_lfb_base; /* 0x3a */ + uint8_t reserved4[2]; /* 0x3e -- 0x3f reserved for future expansion */ + + struct apm_bios_info apm_bios_info; /* 0x40 */ + uint8_t reserved4_1[28]; /* 0x54 */ + uint64_t acpi_rsdp_addr; /* 0x70 */ + uint8_t reserved4_2[8]; /* 0x78 */ + struct drive_info_struct drive_info; /* 0x80 */ + struct sys_desc_table sys_desc_table; /* 0xa0 */ + uint32_t ext_ramdisk_image; /* 0xc0 */ + uint32_t ext_ramdisk_size; /* 0xc4 */ + uint32_t ext_cmd_line_ptr; /* 0xc8 */ + uint8_t reserved4_3[0x1c0 - 0xcc]; /* 0xe4 */ + uint8_t efi_info[32]; /* 0x1c0 */ + uint32_t alt_mem_k; /* 0x1e0 */ + uint8_t reserved5[4]; /* 0x1e4 */ + uint8_t e820_map_nr; /* 0x1e8 */ + uint8_t eddbuf_entries; /* 0x1e9 */ + uint8_t edd_mbr_sig_buf_entries; /* 0x1ea */ + uint8_t reserved6[6]; /* 0x1eb */ + uint8_t setup_sects; /* 0x1f1 */ + uint16_t mount_root_rdonly; /* 0x1f2 */ + uint16_t syssize; /* 0x1f4 */ + uint16_t swapdev; /* 0x1f6 */ + uint16_t ramdisk_flags; /* 0x1f8 */ +#define RAMDISK_IMAGE_START_MASK 0x07FF +#define RAMDISK_PROMPT_FLAG 0x8000 +#define RAMDISK_LOAD_FLAG 0x4000 + uint16_t vid_mode; /* 0x1fa */ + uint16_t root_dev; /* 0x1fc */ + uint8_t reserved9[1]; /* 0x1fe */ + uint8_t aux_device_info; /* 0x1ff */ + /* 2.00+ */ + uint8_t reserved10[2]; /* 0x200 */ + uint8_t header_magic[4]; /* 0x202 */ + uint16_t protocol_version; /* 0x206 */ + uint16_t rmode_switch_ip; /* 0x208 */ + uint16_t rmode_switch_cs; /* 0x20a */ + uint8_t reserved11[4]; /* 0x208 */ + uint8_t loader_type; /* 0x210 */ +#define LOADER_TYPE_LOADLIN 1 +#define LOADER_TYPE_BOOTSECT_LOADER 2 +#define LOADER_TYPE_SYSLINUX 3 +#define LOADER_TYPE_ETHERBOOT 4 +#define LOADER_TYPE_KEXEC 0x0D +#define LOADER_TYPE_UNKNOWN 0xFF + uint8_t loader_flags; /* 0x211 */ + uint8_t reserved12[2]; /* 0x212 */ + uint32_t kernel_start; /* 0x214 */ + uint32_t initrd_start; /* 0x218 */ + uint32_t initrd_size; /* 0x21c */ + uint8_t reserved13[4]; /* 0x220 */ + /* 2.01+ */ + uint16_t heap_end_ptr; /* 0x224 */ + uint8_t reserved14[2]; /* 0x226 */ + /* 2.02+ */ + uint32_t cmd_line_ptr; /* 0x228 */ + /* 2.03+ */ + uint32_t initrd_addr_max; /* 0x22c */ +#if TENATIVE + /* 2.04+ */ + uint16_t entry32_off; /* 0x230 */ + uint16_t internal_cmdline_off; /* 0x232 */ + uint32_t low_base; /* 0x234 */ + uint32_t low_memsz; /* 0x238 */ + uint32_t low_filesz; /* 0x23c */ + uint32_t real_base; /* 0x240 */ + uint32_t real_memsz; /* 0x244 */ + uint32_t real_filesz; /* 0x248 */ + uint32_t high_base; /* 0x24C */ + uint32_t high_memsz; /* 0x250 */ + uint32_t high_filesz; /* 0x254 */ + uint8_t reserved15[0x2d0 - 0x258]; /* 0x258 */ +#else + /* 2.04+ */ + uint32_t kernel_alignment; /* 0x230 */ + uint8_t relocatable_kernel; /* 0x234 */ + uint8_t min_alignment; /* 0x235 */ + uint16_t xloadflags; /* 0x236 */ + uint32_t cmdline_size; /* 0x238 */ + uint32_t hardware_subarch; /* 0x23C */ + uint64_t hardware_subarch_data; /* 0x240 */ + uint32_t payload_offset; /* 0x248 */ + uint32_t payload_length; /* 0x24C */ + uint64_t setup_data; /* 0x250 */ + uint64_t pref_address; /* 0x258 */ + uint32_t init_size; /* 0x260 */ + uint32_t handover_offset; /* 0x264 */ + uint8_t reserved16[0x290 - 0x268]; /* 0x268 */ + uint32_t edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */ +#endif + struct e820entry e820_map[E820MAX]; /* 0x2d0 */ + uint8_t _pad8[48]; /* 0xcd0 */ + struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */ + /* 0xeec */ +#define COMMAND_LINE_SIZE 2048 +} __attribute__((packed)); + +struct x86_linux_faked_param_header { + struct x86_linux_param_header hdr; /* 0x00 */ + uint8_t command_line[COMMAND_LINE_SIZE]; /* 0x1000 */ + // uint8_t reserved18[0x200]; /* 0x1800 - 0x2000 */ +}; + +struct x86_linux_header { + uint8_t reserved1[0xc0]; /* 0x000 */ + uint32_t ext_ramdisk_image; /* 0x0c0 */ + uint32_t ext_ramdisk_size; /* 0x0c4 */ + uint32_t ext_cmd_line_ptr; /* 0x0c8 */ + uint8_t reserved1_1[0x1f1-0xcc]; /* 0x0cc */ + uint8_t setup_sects; /* 0x1f1 */ + uint16_t root_flags; /* 0x1f2 */ + uint32_t syssize; /* 0x1f4 */ + uint16_t ram_size; /* 0x1f8 */ + uint16_t vid_mode; /* 0x1fa */ + uint16_t root_dev; /* 0x1fc */ + uint16_t boot_sector_magic; /* 0x1fe */ + /* 2.00+ */ + uint16_t jump; /* 0x200 */ + uint8_t header_magic[4]; /* 0x202 */ + uint16_t protocol_version; /* 0x206 */ + uint32_t realmode_swtch; /* 0x208 */ + uint16_t start_sys; /* 0x20c */ + uint16_t kver_addr; /* 0x20e */ + uint8_t type_of_loader; /* 0x210 */ + uint8_t loadflags; /* 0x211 */ + uint16_t setup_move_size; /* 0x212 */ + uint32_t code32_start; /* 0x214 */ + uint32_t ramdisk_image; /* 0x218 */ + uint32_t ramdisk_size; /* 0x21c */ + uint32_t bootsect_kludge; /* 0x220 */ + /* 2.01+ */ + uint16_t heap_end_ptr; /* 0x224 */ + uint8_t ext_loader_ver; /* 0x226 */ + uint8_t ext_loader_type; /* 0x227 */ + /* 2.02+ */ + uint32_t cmd_line_ptr; /* 0x228 */ + /* 2.03+ */ + uint32_t initrd_addr_max; /* 0x22c */ + + uint32_t kernel_alignment; /* 0x230 */ + uint8_t relocatable_kernel; /* 0x234 */ + uint8_t min_alignment; /* 0x235 */ + uint16_t xloadflags; /* 0x236 */ + uint32_t cmdline_size; /* 0x238 */ + uint32_t hardware_subarch; /* 0x23C */ + uint64_t hardware_subarch_data; /* 0x240 */ + uint32_t payload_offset; /* 0x248 */ + uint32_t payload_size; /* 0x24C */ + uint64_t setup_data; /* 0x250 */ + uint64_t pref_address; /* 0x258 */ + uint32_t init_size; /* 0x260 */ + uint32_t handover_offset; /* 0x264 */ +} __attribute__((packed)); + +#endif /* ASSEMBLY */ + +#define DEFAULT_INITRD_ADDR_MAX 0x37FFFFFF +#define DEFAULT_BZIMAGE_ADDR_MAX 0x37FFFFFF + +#endif /* X86_LINUX_H */ |