diff options
Diffstat (limited to 'qemu/roms/seabios/src/std/disk.h')
| -rw-r--r-- | qemu/roms/seabios/src/std/disk.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/qemu/roms/seabios/src/std/disk.h b/qemu/roms/seabios/src/std/disk.h new file mode 100644 index 000000000..639710899 --- /dev/null +++ b/qemu/roms/seabios/src/std/disk.h @@ -0,0 +1,175 @@ +// Standard disk BIOS definitions. +#ifndef __DISK_H +#define __DISK_H + +#include "types.h" // u8 + +#define DISK_RET_SUCCESS 0x00 +#define DISK_RET_EPARAM 0x01 +#define DISK_RET_EADDRNOTFOUND 0x02 +#define DISK_RET_EWRITEPROTECT 0x03 +#define DISK_RET_ECHANGED 0x06 +#define DISK_RET_EBOUNDARY 0x09 +#define DISK_RET_EBADTRACK 0x0c +#define DISK_RET_ECONTROLLER 0x20 +#define DISK_RET_ETIMEOUT 0x80 +#define DISK_RET_ENOTLOCKED 0xb0 +#define DISK_RET_ELOCKED 0xb1 +#define DISK_RET_ENOTREMOVABLE 0xb2 +#define DISK_RET_ETOOMANYLOCKS 0xb4 +#define DISK_RET_EMEDIA 0xC0 +#define DISK_RET_ENOTREADY 0xAA + + +/**************************************************************** + * Interface structs + ****************************************************************/ + +// Bios disk structures. +struct int13ext_s { + u8 size; + u8 reserved; + u16 count; + struct segoff_s data; + u64 lba; +} PACKED; + +// DPTE definition +struct dpte_s { + u16 iobase1; + u16 iobase2; + u8 prefix; + u8 unused; + u8 irq; + u8 blkcount; + u8 dma; + u8 pio; + u16 options; + u16 reserved; + u8 revision; + u8 checksum; +}; + +// Disk Physical Table definition +struct int13dpt_s { + u16 size; + u16 infos; + u32 cylinders; + u32 heads; + u32 spt; + u64 sector_count; + u16 blksize; + struct segoff_s dpte; + u16 key; + u8 dpi_length; + u8 reserved1; + u16 reserved2; + u8 host_bus[4]; + u8 iface_type[8]; + u64 iface_path; + union { + struct { + u64 device_path; + u8 reserved3; + u8 checksum; + } phoenix; + struct { + u64 device_path[2]; + u8 reserved3; + u8 checksum; + } t13; + }; +} PACKED; + +// Floppy info +struct fdpt_s { + u16 cylinders; + u8 heads; + u8 a0h_signature; + u8 phys_sectors; + u16 precompensation; + u8 reserved; + u8 drive_control_byte; + u16 phys_cylinders; + u8 phys_heads; + u16 landing_zone; + u8 sectors; + u8 checksum; +} PACKED; + +// Floppy "Disk Base Table" +struct floppy_dbt_s { + u8 specify1; + u8 specify2; + u8 shutoff_ticks; + u8 bps_code; + u8 sectors; + u8 interblock_len; + u8 data_len; + u8 gap_len; + u8 fill_byte; + u8 settle_time; + u8 startup_time; +} PACKED; + +struct floppy_ext_dbt_s { + struct floppy_dbt_s dbt; + // Extra fields + u8 max_track; + u8 data_rate; + u8 drive_type; +} PACKED; + + +/**************************************************************** + * Master boot record + ****************************************************************/ + +struct packed_chs_s { + u8 heads; + u8 sptcyl; + u8 cyllow; +} PACKED; + +struct partition_s { + u8 status; + struct packed_chs_s first; + u8 type; + struct packed_chs_s last; + u32 lba; + u32 count; +} PACKED; + +struct mbr_s { + u8 code[440]; + // 0x01b8 + u32 diskseg; + // 0x01bc + u16 null; + // 0x01be + struct partition_s partitions[4]; + // 0x01fe + u16 signature; +} PACKED; + +#define MBR_SIGNATURE 0xaa55 + + +/**************************************************************** + * ElTorito CDROM interface + ****************************************************************/ + +struct eltorito_s { + u8 size; + u8 media; + u8 emulated_drive; + u8 controller_index; + u32 ilba; + u16 device_spec; + u16 buffer_segment; + u16 load_segment; + u16 sector_count; + struct packed_chs_s chs; +} PACKED; + +#endif // disk.h |