| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #include <string.h> |
| #include "stm32f7xx_hal_def.h" |
| #include "stm32f7xx_hal_flash.h" |
| #include "stm32f7xx_hal_flash_ex.h" |
| #include "hal/hal_flash_int.h" |
| |
| static int stm32f7_flash_read(const struct hal_flash *dev, uint32_t address, |
| void *dst, uint32_t num_bytes); |
| static int stm32f7_flash_write(const struct hal_flash *dev, uint32_t address, |
| const void *src, uint32_t num_bytes); |
| static int stm32f7_flash_erase_sector(const struct hal_flash *dev, |
| uint32_t sector_address); |
| static int stm32f7_flash_sector_info(const struct hal_flash *dev, int idx, |
| uint32_t *address, uint32_t *sz); |
| static int stm32f7_flash_init(const struct hal_flash *dev); |
| |
| static const struct hal_flash_funcs stm32f7_flash_funcs = { |
| .hff_read = stm32f7_flash_read, |
| .hff_write = stm32f7_flash_write, |
| .hff_erase_sector = stm32f7_flash_erase_sector, |
| .hff_sector_info = stm32f7_flash_sector_info, |
| .hff_init = stm32f7_flash_init |
| }; |
| |
| static const uint32_t stm32f7_flash_sectors[] = { |
| 0x08000000, /* 32kB */ |
| 0x08008000, /* 32kB */ |
| 0x08010000, /* 32kB */ |
| 0x08018000, /* 32kB */ |
| 0x08020000, /* 128kB */ |
| 0x08040000, /* 256kB */ |
| 0x08080000, /* 256kB */ |
| 0x080c0000, /* 256kB */ |
| 0x08100000, /* 256kB */ |
| 0x08140000, /* 256kB */ |
| 0x08180000, /* 256kB */ |
| 0x081c0000, /* 256kB */ |
| 0x08200000, /* End of flash */ |
| }; |
| |
| #define STM32F7_FLASH_NUM_AREAS \ |
| (int)(sizeof(stm32f7_flash_sectors) / \ |
| sizeof(stm32f7_flash_sectors[0])) |
| |
| const struct hal_flash stm32f7_flash_dev = { |
| .hf_itf = &stm32f7_flash_funcs, |
| .hf_base_addr = 0x08000000, |
| .hf_size = 2 * 1024 * 1024, |
| .hf_sector_cnt = STM32F7_FLASH_NUM_AREAS - 1, |
| .hf_align = 1, |
| .hf_erased_val = 0xff, |
| }; |
| |
| static int |
| stm32f7_flash_read(const struct hal_flash *dev, uint32_t address, void *dst, |
| uint32_t num_bytes) |
| { |
| memcpy(dst, (void *)address, num_bytes); |
| return 0; |
| } |
| |
| static int |
| stm32f7_flash_write(const struct hal_flash *dev, uint32_t address, |
| const void *src, uint32_t num_bytes) |
| { |
| const uint8_t *sptr; |
| uint32_t i; |
| int rc; |
| |
| sptr = src; |
| /* |
| * Clear status of previous operation. |
| */ |
| __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | \ |
| FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_ERSERR); |
| for (i = 0; i < num_bytes; i++) { |
| rc = HAL_FLASH_Program(FLASH_TYPEPROGRAM_BYTE, address, sptr[i]); |
| if (rc != 0) { |
| return rc; |
| } |
| |
| address++; |
| } |
| |
| return 0; |
| } |
| |
| static void |
| stm32f7_flash_erase_sector_id(int sector_id) |
| { |
| FLASH_Erase_Sector(sector_id, FLASH_VOLTAGE_RANGE_1); |
| } |
| |
| static int |
| stm32f7_flash_erase_sector(const struct hal_flash *dev, uint32_t sector_address) |
| { |
| int i; |
| |
| for (i = 0; i < STM32F7_FLASH_NUM_AREAS - 1; i++) { |
| if (stm32f7_flash_sectors[i] == sector_address) { |
| stm32f7_flash_erase_sector_id(i); |
| return 0; |
| } |
| } |
| |
| return -1; |
| } |
| |
| static int |
| stm32f7_flash_sector_info(const struct hal_flash *dev, int idx, |
| uint32_t *address, uint32_t *sz) |
| { |
| *address = stm32f7_flash_sectors[idx]; |
| *sz = stm32f7_flash_sectors[idx + 1] - stm32f7_flash_sectors[idx]; |
| return 0; |
| } |
| |
| static int |
| stm32f7_flash_init(const struct hal_flash *dev) |
| { |
| HAL_FLASH_Unlock(); |
| return 0; |
| } |