mirror of https://github.com/ARMmbed/mbed-os.git
139 lines
4.5 KiB
C
139 lines
4.5 KiB
C
/*
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* Copyright (c) 2016, Freescale Semiconductor, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "flash_api.h"
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#include "mbed_critical.h"
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#if DEVICE_FLASH
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#include "fsl_flash.h"
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int32_t flash_init(flash_t *obj)
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{
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status_t result;
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/* Clean up Flash driver Structure*/
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memset(&obj->flash_config, 0, sizeof(flash_config_t));
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/* Setup flash driver structure for device and initialize variables. */
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result = FLASH_Init(&obj->flash_config);
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if (kStatus_FLASH_Success != result) {
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return -1;
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} else {
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return 0;
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}
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}
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int32_t flash_free(flash_t *obj)
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{
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return 0;
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}
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int32_t flash_erase_sector(flash_t *obj, uint32_t address)
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{
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int status;
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/* We need to prevent flash accesses during erase operation */
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core_util_critical_section_enter();
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status = FLASH_Erase(&obj->flash_config, address, obj->flash_config.PFlashSectorSize, kFLASH_ApiEraseKey);
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if (status == kStatus_Success) {
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status = FLASH_VerifyErase(&obj->flash_config, address, obj->flash_config.PFlashSectorSize, kFLASH_MarginValueNormal);
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}
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core_util_critical_section_exit();
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if (status == kStatus_Success) {
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return 0;
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} else {
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return -1;
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}
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}
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int32_t flash_program_page(flash_t *obj, uint32_t address, const uint8_t *data, uint32_t size)
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{
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int status;
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/* We need to prevent flash accesses during program operation */
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core_util_critical_section_enter();
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status = FLASH_Program(&obj->flash_config, address, (uint32_t *)data, size);
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if (status == kStatus_Success) {
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// Must use kFlashMargin_User, or kFlashMargin_Factory for verify program
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status = FLASH_VerifyProgram(&obj->flash_config, address, size,
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(uint32_t *)data, kFLASH_MarginValueUser,
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NULL, NULL);
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}
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core_util_critical_section_exit();
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return status;
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}
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uint32_t flash_get_sector_size(const flash_t *obj, uint32_t address)
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{
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uint32_t sectorsize = MBED_FLASH_INVALID_SIZE;
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uint32_t devicesize = 0;
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uint32_t startaddr = 0;
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FLASH_GetProperty((flash_config_t *)&obj->flash_config, kFLASH_PropertyPflashBlockBaseAddr, &startaddr);
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FLASH_GetProperty((flash_config_t *)&obj->flash_config, kFLASH_PropertyPflashTotalSize, &devicesize);
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if ((address >= startaddr) && (address < (startaddr + devicesize))) {
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FLASH_GetProperty((flash_config_t *)&obj->flash_config, kFLASH_PropertyPflashSectorSize, §orsize);
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}
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return sectorsize;
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}
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uint32_t flash_get_page_size(const flash_t *obj)
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{
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return FSL_FEATURE_FLASH_PFLASH_BLOCK_WRITE_UNIT_SIZE;
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}
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uint32_t flash_get_start_address(const flash_t *obj)
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{
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uint32_t startaddr = 0;
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FLASH_GetProperty((flash_config_t *)&obj->flash_config, kFLASH_PropertyPflashBlockBaseAddr, &startaddr);
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return startaddr;
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}
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uint32_t flash_get_size(const flash_t *obj)
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{
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uint32_t devicesize = 0;
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FLASH_GetProperty((flash_config_t *)&obj->flash_config, kFLASH_PropertyPflashTotalSize, &devicesize);
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return devicesize;
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}
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#endif
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