mirror of https://github.com/ARMmbed/mbed-os.git
173 lines
4.9 KiB
C
173 lines
4.9 KiB
C
/*******************************************************************************
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* Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
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* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of Maxim Integrated
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* Products, Inc. shall not be used except as stated in the Maxim Integrated
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* Products, Inc. Branding Policy.
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*
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* The mere transfer of this software does not imply any licenses
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* of trade secrets, proprietary technology, copyrights, patents,
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* trademarks, maskwork rights, or any other form of intellectual
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* property whatsoever. Maxim Integrated Products, Inc. retains all
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* ownership rights.
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*******************************************************************************
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*/
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#if DEVICE_FLASH
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#include "flash_api.h"
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#include "mbed_critical.h"
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#include "cmsis.h"
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#include "flc.h"
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/**
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* * \defgroup flash_hal Flash HAL API
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* * @{
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* */
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/** Initialize the flash peripheral and the flash_t object
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* *
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* * @param obj The flash object
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* * @return 0 for success, -1 for error
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* */
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int32_t flash_init(flash_t *obj)
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{
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return FLC_Init();
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}
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/** Uninitialize the flash peripheral and the flash_t object
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* *
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* * @param obj The flash object
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* * @return 0 for success, -1 for error
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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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/** Erase one sector starting at defined address
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* *
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* * The address should be at sector boundary. This function does not do any check for address alignments
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* * @param obj The flash object
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* * @param address The sector starting address
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* * @return 0 for success, -1 for error
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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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if(FLC_PageErase(address, MXC_V_FLC_ERASE_CODE_PAGE_ERASE, MXC_V_FLC_FLSH_UNLOCK_KEY) != 0)
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{
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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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/** Program pages starting at defined address
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* *
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* * The pages should not cross multiple sectors.
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* * This function does not do any check for address alignments or if size is aligned to a page size.
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* * @param obj The flash object
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* * @param address The sector starting address
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* * @param data The data buffer to be programmed
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* * @param size The number of bytes to program
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* * @return 0 for success, -1 for error
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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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int32_t status = E_BUSY;
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while ( status == E_BUSY )
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{
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status = FLC_Write(address, data, size, MXC_V_FLC_FLSH_UNLOCK_KEY);
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}
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if (status != 0)
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{
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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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/** Get sector size
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* *
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* * @param obj The flash object
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* * @param address The sector starting address
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* * @return The size of a sector
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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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/* 1 sector = 1 page */
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if (address >= (MXC_FLASH_MEM_BASE + MXC_FLASH_FULL_MEM_SIZE)) {
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return MBED_FLASH_INVALID_SIZE;
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} else {
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return MXC_FLASH_PAGE_SIZE;
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}
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}
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/** Get page size
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* *
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* * The page size defines the writable page size
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* * @param obj The flash object
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* * @return The size of a page
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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 MXC_FLASH_PAGE_SIZE;
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}
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/** Get start address for the flash region
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* *
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* * @param obj The flash object
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* * @return The start address for the flash region
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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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return MXC_FLASH_MEM_BASE;
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}
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/** Get the flash region size
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* *
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* * @param obj The flash object
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* * @return The flash region size
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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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return MXC_FLASH_FULL_MEM_SIZE;
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}
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/** Get the flash erase value
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* *
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* * @param obj The flash object
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* * @return The flash erase value
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* */
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uint8_t flash_get_erase_value(const flash_t *obj)
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{
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(void)obj;
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return 0xFF;
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}
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#endif
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