mirror of https://github.com/ARMmbed/mbed-os.git
116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/****************************************************************************
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*
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* Copyright 2020 Samsung Electronics All Rights Reserved.
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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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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* either express or implied. See the License for the specific
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* language governing permissions and limitations under the License.
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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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#define BP6A_FLASH_WRITE_SIZE 4
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#define BP6A_FLASH_PAGE_SIZE 2048
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#define BP6A_FLASH_MEM_BASE 0
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#define BP6A_FLASH_FULL_SIZE (2*1024*1024)
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int32_t flash_init(flash_t *obj)
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{
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modifyreg32(BP_FLASH_CTRL_BASE + UFC_DCYCRDCON_OFFSET, 0xFFFF, 0x9F4); // flash wait setting
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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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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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modifyreg32(BP_FLASH_CTRL_BASE + UFC_FRWCON0_OFFSET,
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UFC_FRWCON_WRMD_MASK |
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UFC_FRWCON_ERSMD_MASK,
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UFC_FRWCON_WRMD(ERASE_MODE) |
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UFC_FRWCON_ERSMD(SECTOR_ERASE_MODE));
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putreg32(address, 0xFFFFFFFF); //load dummy
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modifyreg32(BP_FLASH_CTRL_BASE + UFC_FRWCON0_OFFSET,
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UFC_FRWCON_HVEN_MASK,
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UFC_FRWCON_HVEN(1));
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while (getreg32(BP_FLASH_CTRL_BASE + UFC_FRWCON0_OFFSET) & (0x01 << UFC_FRWCON_HVEN_SHIFT));
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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, const uint8_t *data, uint32_t size)
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{
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uint32_t i;
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for (i = 0; i < size; i += 4) {
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modifyreg32(BP_FLASH_CTRL_BASE + UFC_FRWCON0_OFFSET,
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UFC_FRWCON_WRMD_MASK,
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UFC_FRWCON_WRMD(WRITE_MODE));
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*((uint32_t *)(address + i)) = (uint32_t)(data[i] | data[i + 1] << 8 |
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data[i + 3] << 24 | data[i + 2] << 16);
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modifyreg32(BP_FLASH_CTRL_BASE + UFC_FRWCON0_OFFSET,
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UFC_FRWCON_HVEN_MASK,
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UFC_FRWCON_HVEN(1));
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while (getreg32(BP_FLASH_CTRL_BASE + UFC_FRWCON0_OFFSET) & (0x01 << UFC_FRWCON_HVEN_SHIFT));
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}
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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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/* 1 sector = 1 page */
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if (address >= (BP6A_FLASH_MEM_BASE + BP6A_FLASH_FULL_SIZE)) {
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return MBED_FLASH_INVALID_SIZE;
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} else {
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return BP6A_FLASH_PAGE_SIZE;
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}
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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 BP6A_FLASH_WRITE_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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return BP6A_FLASH_MEM_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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return BP6A_FLASH_FULL_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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UNUSED(obj);
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return 0xFF;
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}
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#endif
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