mirror of https://github.com/ARMmbed/mbed-os.git
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2017 ARM Limited
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* Copyright (c) 2018-2019 Cypress Semiconductor Corporation
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "device.h"
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#include "flash_api.h"
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#include "cy_flash.h"
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#if DEVICE_FLASH
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/** Flash effective page size */
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#define CY_FLASH_EFFECTIVE_PAGE_SIZE 32
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int32_t flash_init(flash_t *obj)
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{
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(void)(obj);
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return 0;
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}
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int32_t flash_free(flash_t *obj)
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{
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(void)(obj);
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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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(void)(obj);
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int32_t status = 0;
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if (Cy_Flash_EraseRow(address) != CY_FLASH_DRV_SUCCESS) {
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status = -1;
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}
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return status;
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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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(void)(obj);
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int32_t status = 0;
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static uint8_t prog_buf[CY_FLASH_SIZEOF_ROW];
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while (size) {
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uint32_t offset = address % CY_FLASH_SIZEOF_ROW;
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uint32_t chunk_size;
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if (offset + size > CY_FLASH_SIZEOF_ROW) {
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chunk_size = CY_FLASH_SIZEOF_ROW - offset;
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} else {
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chunk_size = size;
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}
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uint32_t row_address = address / CY_FLASH_SIZEOF_ROW * CY_FLASH_SIZEOF_ROW;
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memcpy(prog_buf, (const void *)row_address, CY_FLASH_SIZEOF_ROW);
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memcpy(prog_buf + offset, data, chunk_size);
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if (Cy_Flash_ProgramRow(row_address, (const uint32_t *)prog_buf) != CY_FLASH_DRV_SUCCESS) {
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status = -1;
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}
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address += chunk_size;
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size -= chunk_size;
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}
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Cy_SysLib_ClearFlashCacheAndBuffer();
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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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(void)(obj);
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if ((address >= CY_FLASH_BASE) && (address < CY_FLASH_BASE + CY_FLASH_SIZE)) {
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return CY_FLASH_SIZEOF_ROW;
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}
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return MBED_FLASH_INVALID_SIZE;
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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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(void)(obj);
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return CY_FLASH_EFFECTIVE_PAGE_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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(void)(obj);
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return CY_FLASH_BASE;
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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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(void)(obj);
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return CY_FLASH_SIZE;
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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 0x00;
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}
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#endif // DEVICE_FLASH
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