mirror of https://github.com/ARMmbed/mbed-os.git
111 lines
2.2 KiB
C
111 lines
2.2 KiB
C
/*
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* Copyright (c) 2017-2018 ARM Limited
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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 "memory_zones.h"
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/* CM3DS is deployed on MPS2 board with an FPGA image (AN511).
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* It doesn't have physical flash memory,the implementation emulates
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* flash over SRAM.
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*/
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#define FLASH_PAGE_SIZE 256
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#define FLASH_OFS_START ZBT_SSRAM1_START
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#define FLASH_SECTOR_SIZE 0x1000
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#define FLASH_OFS_END (FLASH_OFS_START + FLASH_SIZE)
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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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memset((void *)address, 0xff, FLASH_SECTOR_SIZE);
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return 0;
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}
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int32_t flash_read(flash_t *obj, uint32_t address,
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uint8_t *data, uint32_t size)
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{
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(void)obj;
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memcpy(data, (void *)address, size);
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return 0;
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}
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int32_t flash_program_page(flash_t *obj, uint32_t address,
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const uint8_t *data, uint32_t size)
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{
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(void)obj;
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memcpy((void *)address, data, size);
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return 0;
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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 < FLASH_OFS_START || address >= FLASH_OFS_END) {
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return MBED_FLASH_INVALID_SIZE;
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}
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return FLASH_SECTOR_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 FLASH_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 FLASH_OFS_START;
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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 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 0xFF;
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}
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