nes-proj/drivers/cpu/cc2538/cfs-coffee-arch.c

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/*
* Copyright (c) 2013, ADVANSEE - http://www.advansee.com/
* 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 copyright holder 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 COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDER 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.
*/
/**
* \addtogroup cc2538-cfs-coffee-arch
* @{
*
* \file
* Module for the cc2538 Coffee port
*/
#include "contiki-conf.h"
#include "sys/cc.h"
#include "cfs/cfs-coffee.h"
#include "dev/cc2538-dev.h"
#include "dev/rom-util.h"
#include "dev/flash.h"
#include "dev/watchdog.h"
#include "cpu.h"
#include "cfs-coffee-arch.h"
#include <stdint.h>
#ifndef COFFEE_CONF_CUSTOM_PORT
/*---------------------------------------------------------------------------*/
#if !COFFEE_SECTOR_SIZE || COFFEE_SECTOR_SIZE % FLASH_PAGE_SIZE
#error COFFEE_SECTOR_SIZE must be a non-zero multiple of the flash page size
#endif
#if !COFFEE_PAGE_SIZE || COFFEE_SECTOR_SIZE % COFFEE_PAGE_SIZE
#error COFFEE_PAGE_SIZE must be a divisor of COFFEE_SECTOR_SIZE
#endif
#if COFFEE_PAGE_SIZE % FLASH_WORD_SIZE
#error COFFEE_PAGE_SIZE must be a multiple of the flash word size
#endif
#if COFFEE_START % FLASH_PAGE_SIZE
#error COFFEE_START must be aligned with a flash page boundary
#endif
#if COFFEE_SIZE % COFFEE_SECTOR_SIZE
#error COFFEE_SIZE must be a multiple of COFFEE_SECTOR_SIZE
#endif
#if COFFEE_SIZE / COFFEE_PAGE_SIZE > INT16_MAX
#error Too many Coffee pages for coffee_page_t
#endif
#if COFFEE_START < CC2538_DEV_FLASH_ADDR || \
COFFEE_START + COFFEE_SIZE > FLASH_CCA_ADDR
#error Coffee does not fit in flash
#endif
/*---------------------------------------------------------------------------*/
void
cfs_coffee_arch_erase(uint16_t sector)
{
watchdog_periodic();
INTERRUPTS_DISABLE();
rom_util_page_erase(COFFEE_START + sector * COFFEE_SECTOR_SIZE,
COFFEE_SECTOR_SIZE);
INTERRUPTS_ENABLE();
}
/*---------------------------------------------------------------------------*/
void
cfs_coffee_arch_write(const void *buf, unsigned int size, cfs_offset_t offset)
{
const uint32_t *src = buf;
uint32_t flash_addr = COFFEE_START + offset;
unsigned int align;
uint32_t word, len;
uint32_t page_buf[COFFEE_PAGE_SIZE / FLASH_WORD_SIZE];
unsigned int i;
if(size && (align = flash_addr & (FLASH_WORD_SIZE - 1))) {
len = MIN(FLASH_WORD_SIZE - align, size);
word = ~((*src & ((1 << (len << 3)) - 1)) << (align << 3));
watchdog_periodic();
INTERRUPTS_DISABLE();
rom_util_program_flash(&word, flash_addr & ~(FLASH_WORD_SIZE - 1),
FLASH_WORD_SIZE);
INTERRUPTS_ENABLE();
*(const uint8_t **)&src += len;
size -= len;
flash_addr += len;
}
while(size >= FLASH_WORD_SIZE) {
len = MIN(size & ~(FLASH_WORD_SIZE - 1), COFFEE_PAGE_SIZE);
for(i = 0; i < len / FLASH_WORD_SIZE; i++) {
page_buf[i] = ~*src++;
}
watchdog_periodic();
INTERRUPTS_DISABLE();
rom_util_program_flash(page_buf, flash_addr, len);
INTERRUPTS_ENABLE();
size -= len;
flash_addr += len;
}
if(size) {
word = ~(*src & ((1 << (size << 3)) - 1));
watchdog_periodic();
INTERRUPTS_DISABLE();
rom_util_program_flash(&word, flash_addr, FLASH_WORD_SIZE);
INTERRUPTS_ENABLE();
}
}
/*---------------------------------------------------------------------------*/
void
cfs_coffee_arch_read(void *buf, unsigned int size, cfs_offset_t offset)
{
const uint8_t *src;
uint8_t *dst;
watchdog_periodic();
for(src = (const void *)(COFFEE_START + offset), dst = buf; size; size--) {
*dst++ = ~*src++;
}
}
#endif /* COFFEE_CONF_CUSTOM_PORT */
/** @} */