118 lines
4.6 KiB
C
118 lines
4.6 KiB
C
/************************************************************************************
|
|
* configs/stm3210e-eval/src/up_extcontext.c
|
|
* arch/arm/src/board/up_extcontext.c
|
|
*
|
|
* Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
*
|
|
* 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 <sys/types.h>
|
|
#include <assert.h>
|
|
#include <debug.h>
|
|
|
|
#include "up_arch.h"
|
|
#include "stm32.h"
|
|
#include "stm3210e-internal.h"
|
|
|
|
#ifdef CONFIG_STM32_FSMC
|
|
|
|
/************************************************************************************
|
|
* Pre-processor Definitions
|
|
************************************************************************************/
|
|
|
|
#if STM32_NGPIO_PORTS < 6
|
|
# error "Required GPIO ports not enabled"
|
|
#endif
|
|
|
|
/************************************************************************************
|
|
* Private Data
|
|
************************************************************************************/
|
|
|
|
/************************************************************************************
|
|
* Private Functions
|
|
************************************************************************************/
|
|
|
|
/************************************************************************************
|
|
* Public Functions
|
|
************************************************************************************/
|
|
|
|
/************************************************************************************
|
|
* Name: stm32_extcontextsave
|
|
*
|
|
* Description:
|
|
* Save current GPIOs that will used by external memory configurations
|
|
*
|
|
************************************************************************************/
|
|
|
|
void stm32_extcontextsave(struct extmem_save_s *save)
|
|
{
|
|
DEBUGASSERT(save != NULL);
|
|
save->gpiod_crl = getreg32(STM32_GPIOE_CRL);
|
|
save->gpiod_crh = getreg32(STM32_GPIOE_CRH);
|
|
save->gpioe_crl = getreg32(STM32_GPIOD_CRL);
|
|
save->gpioe_crh = getreg32(STM32_GPIOD_CRH);
|
|
save->gpiof_crl = getreg32(STM32_GPIOF_CRL);
|
|
save->gpiof_crh = getreg32(STM32_GPIOF_CRH);
|
|
save->gpiog_crl = getreg32(STM32_GPIOG_CRL);
|
|
save->gpiog_crh = getreg32(STM32_GPIOG_CRH);
|
|
}
|
|
|
|
/************************************************************************************
|
|
* Name: stm32_extcontextrestore
|
|
*
|
|
* Description:
|
|
* Restore GPIOs that were used by external memory configurations
|
|
*
|
|
************************************************************************************/
|
|
|
|
void stm32_extcontextrestore(struct extmem_save_s *restore)
|
|
{
|
|
DEBUGASSERT(restore != NULL);
|
|
putreg32(restore->gpiod_crl, STM32_GPIOE_CRL);
|
|
putreg32(restore->gpiod_crh, STM32_GPIOE_CRH);
|
|
putreg32(restore->gpioe_crl, STM32_GPIOD_CRL);
|
|
putreg32(restore->gpioe_crh, STM32_GPIOD_CRH);
|
|
putreg32(restore->gpiof_crl, STM32_GPIOF_CRL);
|
|
putreg32(restore->gpiof_crh, STM32_GPIOF_CRH);
|
|
putreg32(restore->gpiog_crl, STM32_GPIOG_CRL);
|
|
putreg32(restore->gpiog_crh, STM32_GPIOG_CRH);
|
|
}
|
|
|
|
#endif /* CONFIG_STM32_FSMC */
|
|
|
|
|