cfs-coffee-arch.h

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/*
 * Copyright (c) 2010, STMicroelectronics.
 * 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)
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 *
 * This file is part of the Contiki operating system.
 *
 */

/**
 * \file
 *  Coffee architecture-dependent header for the STM32W108-based mb851
 *  platform.
 *  STM32W108 has 128KB of program flash.
 * \author
 *  Salvatore Pitrulli <salvopitru@users.sourceforge.net>
 */

#ifndef CFS_COFFEE_ARCH_H
#define CFS_COFFEE_ARCH_H

#include "contiki-conf.h"

#include "hal/error.h"
#include "hal/micro/cortexm3/flash.h"

/* STM32W108 has 128 pages of 1024 bytes each = 128KB
 * The smallest erasable unit is one page and the smallest writable
 * unit is an aligned 16-bit half-word.
 */

/* Byte page size, starting address on page boundary, and size of the file system */
#define FLASH_START               0x8000000
/* Minimum erasable unit. */
#define FLASH_PAGE_SIZE           1024
/* Last 3 pages reserved for NVM. */
#define FLASH_PAGES               125


/* Minimum reservation unit for Coffee. It can be changed by the user.  */
#define COFFEE_PAGE_SIZE          (FLASH_PAGE_SIZE/4)


/* If using IAR, COFFEE_ADDRESS reflects the static value in the linker script
   iar-cfg-coffee.icf, so it can't be passed as a parameter for Make.*/
#ifdef __ICCARM__
#define COFFEE_ADDRESS            0x8010c00
#endif
#if (COFFEE_ADDRESS & 0x3FF) !=0
 #error "COFFEE_ADDRESS not aligned to a 1024-bytes page boundary."
#endif
#define COFFEE_PAGES              ((FLASH_PAGES*FLASH_PAGE_SIZE-(COFFEE_ADDRESS-FLASH_START))/COFFEE_PAGE_SIZE)
#define COFFEE_START              (COFFEE_ADDRESS & ~(COFFEE_PAGE_SIZE-1))
#define COFFEE_SIZE               (COFFEE_PAGES*COFFEE_PAGE_SIZE)

/* These must agree with the parameters passed to makefsdata */
#define COFFEE_SECTOR_SIZE        FLASH_PAGE_SIZE
#define COFFEE_NAME_LENGTH        20

///* These are used internally by the AVR flash read routines */
///* Word reads are faster but take 130 bytes more PROGMEM */
//#define FLASH_WORD_READS          1
///* 1=Slower reads, but no page writes after erase and 18 bytes less PROGMEM. Best for dynamic file system */
//#define FLASH_COMPLEMENT_DATA     0 

/* These are used internally by the coffee file system */
/* Micro logs are not needed for single page sectors */
#define COFFEE_MAX_OPEN_FILES     4
#define COFFEE_FD_SET_SIZE        8
#define COFFEE_DYN_SIZE           (COFFEE_PAGE_SIZE*1)
#define COFFEE_MICRO_LOGS         0
#define COFFEE_LOG_TABLE_LIMIT    16    // It doesnt' matter as
#define COFFEE_LOG_SIZE           128   // COFFEE_MICRO_LOGS is 0.


#if COFFEE_PAGES <= 127
#define coffee_page_t int8_t
#elif COFFEE_PAGES <= 0x7FFF
#define coffee_page_t int16_t
#endif


#define COFFEE_WRITE(buf, size, offset) \
        stm32w_flash_write(COFFEE_START + offset, buf, size)

#define COFFEE_READ(buf, size, offset) \
        stm32w_flash_read(COFFEE_START + offset, buf, size)

#define COFFEE_ERASE(sector) \
        stm32w_flash_erase(sector)


void stm32w_flash_read(int32u address, void * data, int32u length);
void stm32w_flash_write(int32u address, const void * data, int32u length);
void stm32w_flash_erase(int8u sector);

int coffee_file_test(void);

#endif /* !COFFEE_ARCH_H */