mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-22 23:48:12 +00:00
100 lines
3.7 KiB
C
100 lines
3.7 KiB
C
/*
|
|
* This file is part of the Trezor project, https://trezor.io/
|
|
*
|
|
* Copyright (c) SatoshiLabs
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef FLASH_LL_H_
|
|
#define FLASH_LL_H_
|
|
|
|
#include <secbool.h>
|
|
#include <stdint.h>
|
|
|
|
// Flash memory low-level API, providing abstraction for
|
|
// various flash archictures found on STM32 MCUs
|
|
|
|
// The 'sector' parameter in this API can represent
|
|
// 1. Non-uniform sector number on STM32F4
|
|
// 2. Uniform page number on STM32U5
|
|
|
|
#define FLASH_QUADWORD_WORDS (4)
|
|
#define FLASH_QUADWORD_SIZE (FLASH_QUADWORD_WORDS * sizeof(uint32_t))
|
|
|
|
#define FLASH_BURST_WORDS (8 * FLASH_QUADWORD_WORDS)
|
|
#define FLASH_BURST_SIZE (FLASH_BURST_WORDS * sizeof(uint32_t))
|
|
|
|
#define FLASH_BLOCK_SIZE (sizeof(uint32_t) * FLASH_BLOCK_WORDS)
|
|
|
|
typedef uint32_t flash_block_t[FLASH_BLOCK_WORDS];
|
|
|
|
#if FLASH_BLOCK_WORDS == 1
|
|
#define FLASH_ALIGN(X) (((X) + 3) & ~3)
|
|
#define FLASH_IS_ALIGNED(X) (((X) & 3) == 0)
|
|
#elif FLASH_BLOCK_WORDS == 4
|
|
#define FLASH_ALIGN(X) (((X) + 0xF) & ~0xF)
|
|
#define FLASH_IS_ALIGNED(X) (((X) & 0xF) == 0)
|
|
#else
|
|
#error Unsupported number of FLASH_BLOCK_WORDS.
|
|
#endif
|
|
|
|
// Returns the size of the a continuous area of sectors
|
|
// Returns 0 if any of the sectors is out of range
|
|
uint32_t flash_sector_size(uint16_t first_sector, uint16_t sector_count);
|
|
|
|
// Returns number of the sector/page at specified byte 'offset'
|
|
// from the beginning of the 'first_sector'
|
|
uint16_t flash_sector_find(uint16_t first_sector, uint32_t offset);
|
|
|
|
// Returns the physical address of a byte on specified 'offset' in the specified
|
|
// 'sector'. Checks if it's possible to access continues space of 'size' bytes
|
|
// Returns NULL i [offset, offset + size] is of out of the specified sector
|
|
const void *flash_get_address(uint16_t sector, uint32_t offset, uint32_t size);
|
|
|
|
// Unlocks the flash memory for writes/erase operations
|
|
// Flash must be locked again as soon as possible
|
|
secbool __wur flash_unlock_write(void);
|
|
|
|
// Locks the flash memory for writes/erase operations
|
|
secbool __wur flash_lock_write(void);
|
|
|
|
#if defined FLASH_BIT_ACCESS
|
|
|
|
// Writes a single byte to the specified 'offset' inside a flash 'sector'
|
|
secbool __wur flash_write_byte(uint16_t sector, uint32_t offset, uint8_t data);
|
|
|
|
// Writes a single 32-bit word to the specified 'offset' inside a flash 'sector'
|
|
secbool __wur flash_write_word(uint16_t sector, uint32_t offset, uint32_t data);
|
|
|
|
#endif
|
|
|
|
// Writes a 16-byte block to specified 'offset' inside a flash 'sector'
|
|
secbool __wur flash_write_quadword(uint16_t sector, uint32_t offset,
|
|
const uint32_t *data);
|
|
|
|
// Writes a 128-byte burst to specified 'offset' inside a flash 'sector'
|
|
secbool __wur flash_write_burst(uint16_t sector, uint32_t offset,
|
|
const uint32_t *data);
|
|
|
|
// Erases a single sector/page of flash memory
|
|
secbool __wur flash_sector_erase(uint16_t sector);
|
|
|
|
// Writes a block to specified 'offset' inside a flash 'sector'
|
|
// Block represents a natural unit of the given flash memory
|
|
secbool flash_write_block(uint16_t sector, uint32_t offset,
|
|
const flash_block_t block);
|
|
|
|
#endif // FLASH_LL_H
|