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#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
#define PACKED __attribute__((packed))
#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
} 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 */
uint8_t reserved[44]; /* 0x54 */
};
/*
* 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 */
uint8_t reserved4[12]; /* 0x34 -- 0x3f reserved for future expansion */
struct apm_bios_info apm_bios_info; /* 0x40 */
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_1[0x1e0 - 0xcc]; /* 0xcc */
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
};
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 */
} PACKED;
#endif /* ASSEMBLY */
#define DEFAULT_INITRD_ADDR_MAX 0x37FFFFFF
#define DEFAULT_BZIMAGE_ADDR_MAX 0x37FFFFFF
#endif /* X86_LINUX_H */
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