nuttx/configs/open1788/src/lpc17_norinitialize.c

90 lines
3.3 KiB
C

/************************************************************************************
* configs/open1788/src/lpc17_norinitialize.c
* arch/arm/src/board/lpc17_norinitialize.c
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 NuttX 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 OWNER 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.
*
************************************************************************************/
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <debug.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "up_internal.h"
#include "open1788.h"
#if defined(CONFIG_LPC17_EMC) && defined(CONFIG_LPC17_EXTNOR)
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: open1788_nor_initialize
*
* Description:
* Initialize NOR FLASH
*
************************************************************************************/
void open1788_nor_initialize(void)
{
uint32_t regval;
/* Set the memory width and byte lanes */
regval = getreg32(LPC17_EMC_STATICCONFIG0);
regval &= ~EMC_STATICCONFIG_MW_MASK;
regbal |= (EMC_STATICCONFIG_MW_16BIT | EMC_STATICCONFIG_PB);
putreg32(regval, LPC17_EMC_STATICCONFIG0);
/* Configure timing */
putreg32(2, LPC17_EMC_STATICWAITWEN0);
putreg32(2, LPC17_EMC_STATICWAITOEN0);
putreg32(31, LPC17_EMC_STATICWAITRD0);
putreg32(31, LPC17_EMC_STATICWAITPAGE0);
putreg32(31, LPC17_EMC_STATICWAITWR0);
putreg32(31, LPC17_EMC_STATICWAITTURN0);
up_mdelay(10);
}
#endif /* CONFIG_LPC17_EMC && CONFIG_LPC17_EXTNOR */