osd-contiki/platform/z1/cfs-coffee-arch.h

/*
 * Copyright (c) 2008, Swedish Institute of Computer Science
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file is part of the Contiki operating system.
 *
 */

/**
 * \file
 *	Coffee architecture-dependent header for the Zolertia Z1 platform.
 * \author
 * 	Nicolas Tsiftes <nvt@sics.se>
 *      Enric M. Calvo <ecalvo@zolertia.com>
 */

#ifndef CFS_COFFEE_ARCH_H
#define CFS_COFFEE_ARCH_H

#include "contiki-conf.h"
#include "dev/xmem.h"

/*** M25P16 Memory Organization
The memory is organized as: 
16Mbit = 2 097 152 bytes (8 bits each) 
32 sectors (512 Kbits, 65536 bytes each) 
8192 pages (256 bytes each). 
Each page can be individually programmed (bits are programmed from 1 to 0). The device is 
sector or bulk erasable (bits are erased from 0 to 1) but not page erasable
*/
#define COFFEE_XMEM_TOTAL_SIZE_KB       2048UL  //Total size of the External Flash Memory in the Z1

/* Coffee configuration parameters. */
#define COFFEE_SECTOR_SIZE		65536UL  
#define COFFEE_PAGE_SIZE		256UL
#define COFFEE_START			COFFEE_SECTOR_SIZE
#define COFFEE_SIZE			(COFFEE_XMEM_TOTAL_SIZE_KB * 1024UL - COFFEE_START)
#define COFFEE_NAME_LENGTH		16
#define COFFEE_MAX_OPEN_FILES		6
#define COFFEE_FD_SET_SIZE		8
#define COFFEE_LOG_TABLE_LIMIT		256
#define COFFEE_DYN_SIZE			4*1024
#define COFFEE_LOG_SIZE			1024

#define COFFEE_MICRO_LOGS		1

/* Flash operations. */
#define COFFEE_WRITE(buf, size, offset)				\
		xmem_pwrite((char *)(buf), (size), COFFEE_START + (offset))

#define COFFEE_READ(buf, size, offset)				\
  		xmem_pread((char *)(buf), (size), COFFEE_START + (offset))

#define COFFEE_ERASE(sector)					\
  		xmem_erase(COFFEE_SECTOR_SIZE, COFFEE_START + (sector) * COFFEE_SECTOR_SIZE)

/* Coffee types. */
typedef int16_t coffee_page_t;

#endif /* !COFFEE_ARCH_H */