recovery/updater/fmap.h

/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef _RECOVERY_FMAP_H_
#define _RECOVERY_FMAP_H_

#include <stdint.h>

#define FMAP_SIGNATURE		"__FMAP__"
#define FMAP_VER_MAJOR		1	/* this header's FMAP minor version */
#define FMAP_VER_MINOR		1	/* this header's FMAP minor version */
#define FMAP_STRLEN		32	/* maximum length for strings, */
					/* including null-terminator */

enum fmap_flags {
	FMAP_AREA_STATIC	= 1 << 0,
	FMAP_AREA_COMPRESSED	= 1 << 1,
	FMAP_AREA_RO		= 1 << 2,
};

struct fmap_area {
	uint32_t offset;		/* offset relative to base */
	uint32_t size;			/* size in bytes */
	uint8_t  name[FMAP_STRLEN];	/* descriptive name */
	uint16_t flags;			/* flags for this area */
}  __attribute__((packed));
/* Mapping of volatile and static regions in firmware binary */
struct fmap {
	uint64_t signature;		/* "__FMAP__" (0x5F5F50414D465F5F) */
	uint8_t  ver_major;		/* major version */
	uint8_t  ver_minor;		/* minor version */
	uint64_t base;			/* address of the firmware binary */
	uint32_t size;			/* size of firmware binary in bytes */
	uint8_t  name[FMAP_STRLEN];	/* name of this firmware binary */
	uint16_t nareas;		/* number of areas described by
					   fmap_areas[] below */
	struct fmap_area areas[];
} __attribute__((packed));

#endif /* _RECOVERY_FMAP_H_ */