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/*
* <apple.c>
*
* Open Hack'Ware BIOS Apple partition type management
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License V2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <stdio.h>
#include "bios.h"
#include "libpart.h"
/* Apple partitions handler */
#define HFS_BLOCSIZE (512)
typedef struct Mac_head_t Mac_head_t;
struct Mac_head_t {
/* 0x000 */
uint8_t signature[2];
uint16_t bloc_size;
uint32_t bloc_count;
/* 0x008 */
uint16_t dev_type;
uint16_t dev_ID;
uint32_t data;
/* 0x010 */
uint16_t driver_cnt;
uint8_t pad[428];
/* 0x01BE */
uint8_t part_table[0x40];
/* 0x1FE */
uint8_t magic[2];
/* 0x0200 */
} __attribute__ ((packed));
typedef struct Mac_driver_entry_t Mac_driver_entry_t;
struct Mac_driver_entry_t {
uint32_t start;
uint16_t size;
uint16_t type;
} __attribute__ ((packed));
typedef enum Mac_partflags_t Mac_partflags_t;
enum Mac_partflags_t {
MACPART_SPEC2 = 0x0100,
MACPART_SPEC1 = 0x0080,
MACPART_PIC = 0x0040,
MACPART_WRITABLE = 0x0020,
MACPART_READABLE = 0x0010,
MACPART_BOOTABLE = 0x0008,
MACPART_INUSE = 0x0004,
MACPART_ALLOCATED = 0x0002,
MACPART_VALID = 0x0001,
};
#define MAC_BOOTABLE_PART (MACPART_VALID | MACPART_INUSE | MACPART_BOOTABLE)
typedef struct Mac_partmap_t Mac_partmap_t;
struct Mac_partmap_t {
/* 0x000 */
uint8_t signature[2];
uint8_t res0[2];
uint32_t map_cnt;
/* 0x008 */
uint32_t start_bloc;
uint32_t bloc_cnt;
/* 0x010 */
uint8_t name[32];
/* 0x030 */
uint8_t type[32];
/* 0x050 */
uint32_t data_start;
uint32_t data_cnt;
/* 0x058 */
uint32_t flags;
uint32_t boot_start;
/* 0x060 */
uint32_t boot_size;
uint32_t boot_load;
/* 0x068 */
uint32_t boot_load2;
uint32_t boot_entry;
/* 0x070 */
uint32_t boot_entry2;
uint32_t boot_csum;
/* 0x078 */
uint8_t CPU[16];
/* 0x088 */
uint8_t boot_args[0x80];
/* 0x108 */
uint8_t pad0[0xC8];
/* 0x1D4 */
uint16_t ntype;
uint8_t ff[2];
/* 0x1D8 */
uint8_t pad1[0x24];
/* 0x1FC */
uint8_t mark[4];
/* 0x200 */
} __attribute__ ((packed));
int fs_raw_set_bootfile (part_t *part,
uint32_t start_bloc, uint32_t start_offset,
uint32_t size_bloc, uint32_t size_offset);
part_t *Apple_probe_partitions (bloc_device_t *bd)
{
unsigned char tmp[33], *name;
Mac_head_t *head;
Mac_partmap_t *partmap;
part_t *part, *boot_part;
unsigned char *type;
uint8_t *buffer;
uint32_t pos, bloc, start, count;
uint32_t bloc_size, flags;
int map_count, i, n, len;
part = NULL;
boot_part = NULL;
n = 1;
buffer = malloc(HFS_BLOCSIZE);
/* Read first sector */
bd_seek(bd, 0, 0);
if (bd_read(bd, buffer, HFS_BLOCSIZE) < 0) {
ERROR("Unable to read boot sector from boot device. Aborting...\n");
goto error;
}
head = (Mac_head_t *)buffer;
if (head->signature[0] != 'E' || head->signature[1] != 'R') {
// MSG("\rNo Apple boot bloc signature...\n");
goto error;
}
MSG("\rFound Apple partition map...\n");
bloc = 0;
bloc_size = bd_seclen(bd);
map_count = 1;
#if 0
if (head->magic[0] == 0x55 && head->magic[1] == 0xAA) {
/* PREP boot image ! Must parse it as MS-DOS boot bloc */
ERROR("%s PREP head magic\n", __func__);
goto error;
}
#endif
/* Partition table starts in sector 1 */
for (i = 1; i < (map_count + 1); i++) {
bloc = (i * HFS_BLOCSIZE) / bloc_size;
pos = (i * HFS_BLOCSIZE) % bloc_size;
DPRINTF("Check part %d of %d (%d %d %d)\n",
i, map_count, bloc, pos, bloc_size);
bd_seek(bd, bloc, pos);
if (bd_read(bd, buffer, HFS_BLOCSIZE) < 0) {
ERROR("%s sector_read failed (%d)\n", __func__, i);
goto error;
}
partmap = (Mac_partmap_t *)buffer;
if (partmap->signature[0] != 'P' || partmap->signature[1] != 'M' ) {
ERROR("%s bad partition signature (%c %c)\n",
__func__, partmap->signature[0], partmap->signature[1]);
goto error;
}
/* We found at least one Apple partition map,
* so we won't have to try to parse with other partition mappings.
*/
for (type = partmap->type; (type - partmap->type) < 32; type++) {
if (*type != '\0')
break;
}
if (partmap->name[0] == '\0') {
sprintf(tmp, "part%d", i);
name = tmp;
} else {
name = partmap->name;
}
/* Regular Apple partition */
part = malloc(sizeof(part_t));
if (part == NULL) {
ERROR("%s: can't allocate partition\n", __func__);
return NULL;
}
memset(part, 0, sizeof(part_t));
part->start = partmap->start_bloc;
part->size = partmap->bloc_cnt;
part_set_blocsize(bd, part, HFS_BLOCSIZE);
len = 32 - (type - partmap->type);
if (len == 0) {
/* Place holder. Skip it */
DPRINTF("%s placeholder part\t%d\n", __func__, i);
} else if (strncmp("Apple_Void", type, 32) == 0) {
/* Void partition. Skip it */
DPRINTF("%s Void part\t%d [%s]\n", __func__, i, type);
} else if (strncmp("Apple_Free", type, 32) == 0) {
/* Free space. Skip it */
DPRINTF("%s Free part (%d)\n", __func__, i);
part->flags = PART_TYPE_APPLE | PART_FLAG_DUMMY;
part_register(bd, part, name);
} else if (strncmp("Apple_partition_map", type, 32) == 0 ||
strncmp("Apple_Partition_Map", type, 32) == 0
#if 0 // Is this really used or is it just a mistake ?
|| strncmp("Apple_patition_map", type, 32) == 0
#endif
) {
DPRINTF("%s Partition map\t%d [%s]\n", __func__, i, type);
/* We are in the partition map descriptor */
if (i == 1) {
/* Get the real map blocs count */
map_count = partmap->map_cnt;
DPRINTF("%s: map_count: %d\n", __func__, map_count);
} else {
/* Don't about about secondary partition map
* Seems to be used, at least on CDROMs, to describe
* the same partition map with bloc_size = 2048
*/
}
part->flags = PART_TYPE_APPLE | PART_FLAG_DUMMY;
part_register(bd, part, name);
} else if (strncmp("Apple_Driver", type, 32) == 0 ||
strncmp("Apple_Driver43", type, 32) == 0 ||
strncmp("Apple_Driver43_CD", type, 32) == 0 ||
strncmp("Apple_Driver_ATA", type, 32) == 0 ||
strncmp("Apple_Driver_ATAPI", type, 32) == 0 ||
strncmp("Apple_FWDriver", type, 32) == 0 ||
strncmp("Apple_Driver_IOKit", type, 32) == 0) {
/* Drivers. don't care for now */
DPRINTF("%s Drivers part\t%d [%s]\n", __func__, i, type);
} else if (strncmp("Apple_Patches", type, 32) == 0) {
/* Patches: don't care for now */
DPRINTF("%s Patches part\t%d [%s]\n", __func__, i, type);
} else if (strncmp("Apple_HFS", type, 32) == 0 ||
strncmp("Apple_MFS", type, 32) == 0 ||
strncmp("Apple_UFS", type, 32) == 0 ||
strncmp("Apple_PRODOS", type, 32) == 0 ||
strncmp("Apple_UNIX_SVR2", type, 32) == 0 ||
strncmp("Linux", type, 32) == 0 ||
strncmp("NetBSD/macppc", type, 32) == 0 ||
strncmp("Apple_boot", type, 32) == 0 ||
strncmp("Apple_bootstrap", type, 32) == 0 ||
strncmp("Apple_Bootstrap", type, 32) == 0) {
DPRINTF("%s Fs part\t%d [%s]\n", __func__, i, type);
/* Filesystems / boot partitions */
flags = partmap->flags;
start = partmap->start_bloc * HFS_BLOCSIZE;
count = partmap->bloc_cnt * HFS_BLOCSIZE;
if (partmap->boot_size == 0 || partmap->boot_load == 0) {
printf("Not a bootable partition %d %d (%p %p)\n",
partmap->boot_size, partmap->boot_load,boot_part, part);
if (boot_part == NULL)
boot_part = part;
part->flags = PART_TYPE_APPLE | PART_FLAG_FS;
} else {
part->boot_start.bloc = partmap->boot_start;
part->boot_start.offset = 0;
part->boot_size.bloc = partmap->boot_size / HFS_BLOCSIZE;
#if 0
printf("%0x %0x %0x\n", partmap->boot_size, HFS_BLOCSIZE,
part->boot_size.bloc);
#endif
part->boot_size.offset = (partmap->boot_size) % HFS_BLOCSIZE;
part->boot_load = partmap->boot_load;
part->boot_entry = partmap->boot_entry;
fs_raw_set_bootfile(part, part->boot_start.bloc,
part->boot_start.offset,
part->boot_size.bloc,
part->boot_size.offset);
boot_part = part;
part->flags = PART_TYPE_APPLE | PART_FLAG_FS | PART_FLAG_BOOT;
}
printf("Partition: %d %s st %0x size %0x",
i, name, partmap->start_bloc, partmap->bloc_cnt);
#ifndef DEBUG
printf("\n");
#endif
DPRINTF(" - %0x %0x %p %p\n",
partmap->boot_start, partmap->boot_size, part, part->fs);
DPRINTF(" boot %0x %0x load %0x entry %0x\n",
part->boot_start.bloc, part->boot_size.bloc,
part->boot_load, part->boot_entry);
DPRINTF(" load %0x entry %0x %0x\n",
partmap->boot_load2, partmap->boot_entry2, HFS_BLOCSIZE);
part_register(bd, part, name);
} else {
memcpy(tmp, type, 32);
tmp[32] = '\0';
ERROR("Unknown partition type [%s]\n", tmp);
}
}
error:
free(buffer);
return boot_part;
}
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