mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-26 01:18:28 +00:00
120 lines
4.0 KiB
C
120 lines
4.0 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/>.
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "common.h"
|
|
#include "flash.h"
|
|
|
|
static const uint32_t FLASH_START = 0x08000000;
|
|
static const uint32_t FLASH_END = 0x08200000;
|
|
static const uint32_t FLASH_SECTOR_TABLE[FLASH_SECTOR_COUNT + 1] = {
|
|
[0] = FLASH_START, // - 0x08003FFF | 16 KiB
|
|
[1] = 0x08004000, // - 0x08007FFF | 16 KiB
|
|
[2] = 0x08008000, // - 0x0800BFFF | 16 KiB
|
|
[3] = 0x0800C000, // - 0x0800FFFF | 16 KiB
|
|
[4] = 0x08010000, // - 0x0801FFFF | 64 KiB
|
|
[5] = 0x08020000, // - 0x0803FFFF | 128 KiB
|
|
[6] = 0x08040000, // - 0x0805FFFF | 128 KiB
|
|
[7] = 0x08060000, // - 0x0807FFFF | 128 KiB
|
|
[8] = 0x08080000, // - 0x0809FFFF | 128 KiB
|
|
[9] = 0x080A0000, // - 0x080BFFFF | 128 KiB
|
|
[10] = 0x080C0000, // - 0x080DFFFF | 128 KiB
|
|
[11] = 0x080E0000, // - 0x080FFFFF | 128 KiB
|
|
[12] = 0x08100000, // - 0x08103FFF | 16 KiB
|
|
[13] = 0x08104000, // - 0x08107FFF | 16 KiB
|
|
[14] = 0x08108000, // - 0x0810BFFF | 16 KiB
|
|
[15] = 0x0810C000, // - 0x0810FFFF | 16 KiB
|
|
[16] = 0x08110000, // - 0x0811FFFF | 64 KiB
|
|
[17] = 0x08120000, // - 0x0813FFFF | 128 KiB
|
|
[18] = 0x08140000, // - 0x0815FFFF | 128 KiB
|
|
[19] = 0x08160000, // - 0x0817FFFF | 128 KiB
|
|
[20] = 0x08180000, // - 0x0819FFFF | 128 KiB
|
|
[21] = 0x081A0000, // - 0x081BFFFF | 128 KiB
|
|
[22] = 0x081C0000, // - 0x081DFFFF | 128 KiB
|
|
[23] = 0x081E0000, // - 0x081FFFFF | 128 KiB
|
|
[24] = FLASH_END, // last element - not a valid sector
|
|
};
|
|
|
|
const uint32_t FLASH_SIZE = FLASH_END - FLASH_START;
|
|
uint8_t *FLASH_BUFFER = NULL;
|
|
|
|
secbool flash_unlock(void) { return sectrue; }
|
|
|
|
secbool flash_lock(void) { return sectrue; }
|
|
|
|
const void *flash_get_address(uint8_t sector, uint32_t offset, uint32_t size) {
|
|
if (sector >= FLASH_SECTOR_COUNT) {
|
|
return NULL;
|
|
}
|
|
const uint32_t addr = FLASH_SECTOR_TABLE[sector] + offset;
|
|
const uint32_t next = FLASH_SECTOR_TABLE[sector + 1];
|
|
if (addr + size > next) {
|
|
return NULL;
|
|
}
|
|
return FLASH_BUFFER + addr - FLASH_SECTOR_TABLE[0];
|
|
}
|
|
|
|
secbool flash_erase_sectors(const uint8_t *sectors, int len,
|
|
void (*progress)(int pos, int len)) {
|
|
if (progress) {
|
|
progress(0, len);
|
|
}
|
|
for (int i = 0; i < len; i++) {
|
|
const uint8_t sector = sectors[i];
|
|
const uint32_t offset = FLASH_SECTOR_TABLE[sector] - FLASH_SECTOR_TABLE[0];
|
|
const uint32_t size =
|
|
FLASH_SECTOR_TABLE[sector + 1] - FLASH_SECTOR_TABLE[sector];
|
|
memset(FLASH_BUFFER + offset, 0xFF, size);
|
|
if (progress) {
|
|
progress(i + 1, len);
|
|
}
|
|
}
|
|
return sectrue;
|
|
}
|
|
|
|
secbool flash_write_byte(uint8_t sector, uint32_t offset, uint8_t data) {
|
|
uint8_t *flash = (uint8_t *)flash_get_address(sector, offset, 1);
|
|
if (!flash) {
|
|
return secfalse;
|
|
}
|
|
if ((flash[0] & data) != data) {
|
|
return secfalse; // we cannot change zeroes to ones
|
|
}
|
|
flash[0] = data;
|
|
return sectrue;
|
|
}
|
|
|
|
secbool flash_write_word(uint8_t sector, uint32_t offset, uint32_t data) {
|
|
if (offset % 4) { // we write only at 4-byte boundary
|
|
return secfalse;
|
|
}
|
|
uint32_t *flash = (uint32_t *)flash_get_address(sector, offset, sizeof(data));
|
|
if (!flash) {
|
|
return secfalse;
|
|
}
|
|
if ((flash[0] & data) != data) {
|
|
return secfalse; // we cannot change zeroes to ones
|
|
}
|
|
flash[0] = data;
|
|
return sectrue;
|
|
}
|