321 lines
10 KiB
C
321 lines
10 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* 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 in
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* 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 OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/mpconfig.h"
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#include "py/misc.h"
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#include "flash.h"
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typedef struct {
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uint32_t base_address;
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uint32_t sector_size;
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uint32_t sector_count;
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} flash_layout_t;
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#if defined(STM32F4)
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static const flash_layout_t flash_layout[] = {
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{ 0x08000000, 0x04000, 4 },
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{ 0x08010000, 0x10000, 1 },
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{ 0x08020000, 0x20000, 3 },
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#if defined(FLASH_SECTOR_8)
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{ 0x08080000, 0x20000, 4 },
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#endif
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#if defined(FLASH_SECTOR_12)
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{ 0x08100000, 0x04000, 4 },
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{ 0x08110000, 0x10000, 1 },
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{ 0x08120000, 0x20000, 7 },
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#endif
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};
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#elif defined(STM32F7)
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// FLASH_FLAG_PGSERR (Programming Sequence Error) was renamed to
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// FLASH_FLAG_ERSERR (Erasing Sequence Error) in STM32F7
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#define FLASH_FLAG_PGSERR FLASH_FLAG_ERSERR
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static const flash_layout_t flash_layout[] = {
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{ 0x08000000, 0x08000, 4 },
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{ 0x08020000, 0x20000, 1 },
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{ 0x08040000, 0x40000, 3 },
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};
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#elif defined(STM32L4)
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static const flash_layout_t flash_layout[] = {
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{ (uint32_t)FLASH_BASE, (uint32_t)FLASH_PAGE_SIZE, 512 },
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};
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#elif defined(STM32H7)
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static const flash_layout_t flash_layout[] = {
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{ 0x08000000, 0x20000, 8 },
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};
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#else
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#error Unsupported processor
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#endif
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#if defined(STM32L4) || defined(STM32H7)
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// get the bank of a given flash address
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static uint32_t get_bank(uint32_t addr) {
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#if defined(STM32H7)
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if (READ_BIT(FLASH->OPTCR, FLASH_OPTCR_SWAP_BANK) == 0) {
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#else
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if (READ_BIT(SYSCFG->MEMRMP, SYSCFG_MEMRMP_FB_MODE) == 0) {
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#endif
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// no bank swap
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if (addr < (FLASH_BASE + FLASH_BANK_SIZE)) {
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return FLASH_BANK_1;
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} else {
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return FLASH_BANK_2;
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}
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} else {
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// bank swap
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if (addr < (FLASH_BASE + FLASH_BANK_SIZE)) {
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return FLASH_BANK_2;
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} else {
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return FLASH_BANK_1;
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}
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}
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}
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#if defined(STM32L4)
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// get the page of a given flash address
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static uint32_t get_page(uint32_t addr) {
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if (addr < (FLASH_BASE + FLASH_BANK_SIZE)) {
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// bank 1
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return (addr - FLASH_BASE) / FLASH_PAGE_SIZE;
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} else {
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// bank 2
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return (addr - (FLASH_BASE + FLASH_BANK_SIZE)) / FLASH_PAGE_SIZE;
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}
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}
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#endif
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#endif
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uint32_t flash_get_sector_info(uint32_t addr, uint32_t *start_addr, uint32_t *size) {
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if (addr >= flash_layout[0].base_address) {
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uint32_t sector_index = 0;
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for (int i = 0; i < MP_ARRAY_SIZE(flash_layout); ++i) {
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for (int j = 0; j < flash_layout[i].sector_count; ++j) {
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uint32_t sector_start_next = flash_layout[i].base_address
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+ (j + 1) * flash_layout[i].sector_size;
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if (addr < sector_start_next) {
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if (start_addr != NULL) {
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*start_addr = flash_layout[i].base_address
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+ j * flash_layout[i].sector_size;
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}
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if (size != NULL) {
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*size = flash_layout[i].sector_size;
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}
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return sector_index;
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}
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++sector_index;
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}
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}
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}
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return 0;
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}
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void flash_erase(uint32_t flash_dest, uint32_t num_word32) {
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// check there is something to write
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if (num_word32 == 0) {
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return;
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}
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// unlock
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HAL_FLASH_Unlock();
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FLASH_EraseInitTypeDef EraseInitStruct;
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#if defined(STM32L4)
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_ALL_ERRORS);
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// erase the sector(s)
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// The sector returned by flash_get_sector_info can not be used
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// as the flash has on each bank 0/1 pages 0..255
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EraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES;
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EraseInitStruct.Banks = get_bank(flash_dest);
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EraseInitStruct.Page = get_page(flash_dest);
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EraseInitStruct.NbPages = get_page(flash_dest + 4 * num_word32 - 1) - EraseInitStruct.Page + 1;;
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#else
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// Clear pending flags (if any)
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#if defined(STM32H7)
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_ALL_ERRORS_BANK1 | FLASH_FLAG_ALL_ERRORS_BANK2);
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#else
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |
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FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
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#endif
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// erase the sector(s)
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EraseInitStruct.TypeErase = TYPEERASE_SECTORS;
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EraseInitStruct.VoltageRange = VOLTAGE_RANGE_3; // voltage range needs to be 2.7V to 3.6V
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#if defined(STM32H7)
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EraseInitStruct.Banks = get_bank(flash_dest);
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#endif
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EraseInitStruct.Sector = flash_get_sector_info(flash_dest, NULL, NULL);
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EraseInitStruct.NbSectors = flash_get_sector_info(flash_dest + 4 * num_word32 - 1, NULL, NULL) - EraseInitStruct.Sector + 1;
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#endif
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uint32_t SectorError = 0;
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if (HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError) != HAL_OK) {
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// error occurred during sector erase
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HAL_FLASH_Lock(); // lock the flash
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return;
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}
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}
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/*
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// erase the sector using an interrupt
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void flash_erase_it(uint32_t flash_dest, uint32_t num_word32) {
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// check there is something to write
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if (num_word32 == 0) {
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return;
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}
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// unlock
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HAL_FLASH_Unlock();
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// Clear pending flags (if any)
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |
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FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR|FLASH_FLAG_PGSERR);
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// erase the sector(s)
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FLASH_EraseInitTypeDef EraseInitStruct;
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EraseInitStruct.TypeErase = TYPEERASE_SECTORS;
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EraseInitStruct.VoltageRange = VOLTAGE_RANGE_3; // voltage range needs to be 2.7V to 3.6V
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EraseInitStruct.Sector = flash_get_sector_info(flash_dest, NULL, NULL);
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EraseInitStruct.NbSectors = flash_get_sector_info(flash_dest + 4 * num_word32 - 1, NULL, NULL) - EraseInitStruct.Sector + 1;
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if (HAL_FLASHEx_Erase_IT(&EraseInitStruct) != HAL_OK) {
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// error occurred during sector erase
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HAL_FLASH_Lock(); // lock the flash
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return;
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}
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}
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*/
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void flash_write(uint32_t flash_dest, const uint32_t *src, uint32_t num_word32) {
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#if defined(STM32L4)
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// program the flash uint64 by uint64
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for (int i = 0; i < num_word32 / 2; i++) {
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uint64_t val = *(uint64_t*)src;
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, flash_dest, val) != HAL_OK) {
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// error occurred during flash write
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HAL_FLASH_Lock(); // lock the flash
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return;
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}
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flash_dest += 8;
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src += 2;
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}
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if ((num_word32 & 0x01) == 1) {
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uint64_t val = *(uint64_t*)flash_dest;
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val = (val & 0xffffffff00000000uL) | (*src);
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, flash_dest, val) != HAL_OK) {
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// error occurred during flash write
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HAL_FLASH_Lock(); // lock the flash
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return;
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}
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}
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#elif defined(STM32H7)
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// program the flash 256 bits at a time
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for (int i = 0; i < num_word32 / 8; i++) {
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_FLASHWORD, flash_dest, (uint64_t)(uint32_t)src) != HAL_OK) {
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// error occurred during flash write
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HAL_FLASH_Lock(); // lock the flash
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return;
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}
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flash_dest += 32;
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src += 8;
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}
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#else
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// program the flash word by word
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for (int i = 0; i < num_word32; i++) {
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, flash_dest, *src) != HAL_OK) {
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// error occurred during flash write
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HAL_FLASH_Lock(); // lock the flash
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return;
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}
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flash_dest += 4;
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src += 1;
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}
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#endif
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// lock the flash
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HAL_FLASH_Lock();
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}
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/*
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use erase, then write
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void flash_erase_and_write(uint32_t flash_dest, const uint32_t *src, uint32_t num_word32) {
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// check there is something to write
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if (num_word32 == 0) {
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return;
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}
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// unlock
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HAL_FLASH_Unlock();
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// Clear pending flags (if any)
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |
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FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR|FLASH_FLAG_PGSERR);
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// erase the sector(s)
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FLASH_EraseInitTypeDef EraseInitStruct;
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EraseInitStruct.TypeErase = TYPEERASE_SECTORS;
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EraseInitStruct.VoltageRange = VOLTAGE_RANGE_3; // voltage range needs to be 2.7V to 3.6V
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EraseInitStruct.Sector = flash_get_sector_info(flash_dest, NULL, NULL);
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EraseInitStruct.NbSectors = flash_get_sector_info(flash_dest + 4 * num_word32 - 1, NULL, NULL) - EraseInitStruct.Sector + 1;
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uint32_t SectorError = 0;
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if (HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError) != HAL_OK) {
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// error occurred during sector erase
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HAL_FLASH_Lock(); // lock the flash
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return;
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}
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// program the flash word by word
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for (int i = 0; i < num_word32; i++) {
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if (HAL_FLASH_Program(TYPEPROGRAM_WORD, flash_dest, *src) != HAL_OK) {
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// error occurred during flash write
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HAL_FLASH_Lock(); // lock the flash
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return;
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}
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flash_dest += 4;
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src += 1;
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}
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// lock the flash
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HAL_FLASH_Lock();
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}
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*/
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