rockbox/firmware/export/disk.h
Solomon Peachy 5dc0e4e0bc disk: Support GUID Partition Tables (GPT)
Notes:

 * Currently limited to 32-bit sector addresses due to internal Rockbox
   APIs. So this means a practical limit of 2TiB per drive.
 * Only 'General Data' GPT partition type is recognised, as that's
   what SD cards seem to use for exFAT/FAT32.

Note that _booting_ off GPT-partitioned drive will require rebuilding
the various rockbox bootloaders, and even then there may be platform
limitations that preclude this.

Change-Id: Ibfaae1960adcb1e81976d4b60dd596c6d16318e4
2023-05-21 20:34:03 -04:00

57 lines
2 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Björn Stenberg
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef _DISK_H_
#define _DISK_H_
#include "config.h"
#include "mv.h" /* for volume definitions */
struct partinfo
{
unsigned long start; /* first sector (LBA) */
unsigned long size; /* number of sectors */
unsigned char type;
};
#define PARTITION_TYPE_FAT32 0x0b
#define PARTITION_TYPE_FAT32_LBA 0x0c
#define PARTITION_TYPE_FAT16 0x06
#define PARTITION_TYPE_OS2_HIDDEN_C_DRIVE 0x84
#define PARTITION_TYPE_GPT_GUARD 0xee
#define MAX_PARTITIONS_PER_DRIVE 4 /* Needs to be at least 4 */
bool disk_init(IF_MD_NONVOID(int drive));
bool disk_partinfo(int partition, struct partinfo *info);
int disk_mount_all(void); /* returns the # of successful mounts */
int disk_mount(int drive);
int disk_unmount_all(void);
int disk_unmount(int drive);
/* The number of 512-byte sectors in a "logical" sector. Needed for ipod 5.5G */
#ifdef MAX_LOG_SECTOR_SIZE
int disk_get_sector_multiplier(IF_MD_NONVOID(int drive));
#endif
bool disk_present(IF_MD_NONVOID(int drive));
#endif /* _DISK_H_ */