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EMILE/libmap/libmap.h

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/*
*
* (c) 2004-2007 Laurent Vivier <Laurent@Vivier.EU>
*
*/
#ifndef _LIBMAP_H
#define _LIBMAP_H
#include <sys/types.h>
#include "libstream.h"
#include "emile.h"
enum {
kPartitionAUXIsValid= 0x00000001,
kPartitionAUXIsAllocated = 0x00000002,
kPartitionAUXIsInUse= 0x00000004,
kPartitionAUXIsBootValid = 0x00000008,
kPartitionAUXIsReadable = 0x00000010,
kPartitionAUXIsWriteable = 0x00000020,
kPartitionAUXIsBootCodePositionIndependent = 0x00000040,
kPartitionIsMountedAtStartup = 0x40000000,
kPartitionIsStartup = 0x80000000,
kPartitionIsChainCompatible = 0x00000100,
kPartitionIsRealDeviceDriver = 0x00000200,
kPartitionCanChainToNext = 0x00000400,
};
/* Constants for the Type field */
enum {
kDriverTypeMacSCSI = 0x0001,
kDriverTypeMacATA = 0x0701,
kDriverTypeMacSCSIChained = 0xFFFF,
kDriverTypeMacATAChained = 0xF8FF
};
struct DriverInfo {
int32_t Block;
int16_t Size;
int16_t Type;
} __attribute__((packed));
#define DD_MAX_DRIVER 61
struct DriverDescriptor {
int16_t Sig;
int16_t BlkSize;
int32_t BlkCount;
int16_t DevType;
int16_t DevId;
int32_t Data;
int16_t DrvrCount;
struct DriverInfo DrvInfo[DD_MAX_DRIVER];
int8_t Pad[6];
} __attribute__((packed));
#define ASSERT_DD(a) if ( sizeof(struct DriverDescriptor) != 512 ) { a }
/* Driver signatures, stored in the first four byte of pmPad. */
enum {
kPatchDriverSignature = 0x70744452, /* 'ptDR', SCSI and ATA[PI] patch driver */
kSCSIDriverSignature = 0x00010600, /* SCSI hard disk driver */
kATADriverSignature = 0x77696b69, /*'wiki', ATA hard disk driver */
kSCSICDDriverSignature = 0x43447672, /* 'CDvr', SCSI CD-ROM driver */
kATAPIDriverSignature = 0x41545049, /* 'ATPI', ATAPI CD-ROM driver */
kDriveSetupHFSSignature = 0x44535531, /* 'DSU1', Drive Setup HFS partition */
};
enum {
kPatchMesh = 0x6d657368, /* 'mesh', fixes MESH bug */
kPatchSCSI = 0x73637369, /* 'scsi' enable booting from CDROM */
kPatchRuby = 0x72756279, /* 'ruby', volume larger than 2GB */
kPatchSnag = 0x736e6167, /* 'snag', enable C key to boot CDROM */
};
struct Partition {
int16_t Sig;
int16_t SigPad;
int32_t MapBlkCnt;
int32_t PyPartStart;
int32_t PartBlkCnt;
char PartName[32];
char PartType[32];
int32_t LgDataStart;
int32_t DataCnt;
int32_t PartStatus;
int32_t LgBootStart;
int32_t BootSize;
int32_t BootAddr;
int32_t BootAddr2;
int32_t BootEntry;
int32_t BootEntry2;
int32_t BootCksum;
char Processor[16];
int16_t Pad[188];
} __attribute__((packed));
#define ASSERT_P(a) if ( sizeof(struct Partition) != 512 ) { a }
#define DD_SIGNATURE 0x4552
#define MAP_SIGNATURE 0x504D
#define APPLE_PARTITION_MAP "Apple_partition_map"
#define APPLE_DRIVER "Apple_Driver"
#define APPLE_DRIVER43 "Apple_Driver43"
#define APPLE_MFS "Apple_MFS"
#define APPLE_HFS "Apple_HFS"
#define APPLE_UNIX_SVR2 "Apple_Unix_SVR2"
#define APPLE_PRODOS "Apple_PRODOS"
#define APPLE_FREE "Apple_Free"
#define APPLE_SCRATCH "Apple_Scratch"
#define APPLE_DRIVER_ATA "Apple_Driver_ATA"
#define APPLE_DRIVER_ATAPI "Apple_Driver_ATAPI"
#define APPLE_DRIVER43_CD "Apple_Driver43_CD"
#define APPLE_FWDRIVER "Apple_FWDriver"
#define APPLE_VOID "Apple_Void"
#define APPLE_PATCHES "Apple_Patches"
#define APPLE_DRIVER_EMILE "Apple_Driver_EMILE"
#define MAP_NAME_LEN 256
#define MAP_BLOCKSIZE 2048
typedef struct {
device_io_t *device;
int current;
struct DriverDescriptor drivers;
char filler1[MAP_BLOCKSIZE-512];
struct Partition partition;
char filler2[MAP_BLOCKSIZE-512];
} map_t;
enum {
INVALID_BOOTBLOCK = -1,
APPLE_BOOTBLOCK = 0,
EMILE_BOOTBLOCK,
UNKNOWN_BOOTBLOCK,
};
#define FLOPPY_SECTOR_SIZE 512
#define FIRST_LEVEL_SIZE (FLOPPY_SECTOR_SIZE * 2)
#define BOOTBLOCK_SIZE (FLOPPY_SECTOR_SIZE * 2)
extern int map_init(device_io_t *device, int partition);
extern map_t* map_open(device_io_t *device);
extern void map_close(map_t *map);
extern int map_get_number(map_t *map);
extern int map_read(map_t *map, int part);
extern int map_write(map_t *map, int part);
extern int map_partition_is_valid(map_t *map);
extern int map_get_partition_geometry(map_t *map, int *start, int *count);
extern char* map_get_partition_type(map_t *map);
extern char* map_get_partition_name(map_t *map);
extern int map_partition_is_bootable(map_t *map);
extern int map_partition_is_startup(map_t *map);
extern int map_set_partition_type(map_t *map, char* type);
extern int map_set_partition_name(map_t *map, char* name);
extern int map_partition_set_bootable(map_t *map, int enable);
extern int map_partition_set_startup(map_t *map, int enable);
extern int map_is_valid(map_t *map);
extern int map_partition_get_flags(map_t *map);
extern int map_partition_set_flags(map_t *map, int flags);
extern int map_geometry(map_t *map, int *block_size,
int *block_count);
extern int map_get_driver_number(map_t *map);
extern int map_get_driver_info(map_t *map, int number,
int *block, int *size, int* type);
extern int map_bootblock_read(map_t* map, char* bootblock);
extern int map_bootblock_write(map_t* map, char* bootblock);
extern int map_bootblock_get_type(char* bootblock);
extern int map_bootblock_is_valid(char *bootblock);
extern int map_set_startup(map_t *map, int partition);
extern int emile_is_apple_driver(map_t *map);
extern int map_has_apple_driver(map_t *map);
extern int map_seek_driver_partition(map_t *map, int start);
extern int map_get_bootinfo(map_t* map, int* bootstart, int *bootsize, int *bootaddr, int *bootentry, int* checksum, char* processor);
extern int map_set_bootinfo(map_t *map, int bootstart, int bootsize, int bootaddr, int bootentry, int checksum, char* processor);
extern int map_set_driver_info(map_t *map, int number, int block, int size, int type);
extern int map_set_driver_number(map_t *map, int number);
extern unsigned long map_get_driver_signature(map_t* map);
extern int map_block0_write(map_t *map);
extern int map_read_sector(map_t* map, off_t block, char *buffer, size_t nb);
extern int map_write_sector(map_t* map, off_t block, char *buffer, size_t nb);
extern int map_get_blocksize(map_t *map);
extern unsigned short map_checksum(unsigned char *addr, unsigned int length);
extern unsigned short map_checksum_ATA(unsigned char *addr, unsigned int length);
#endif
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