mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-16 04:29:08 +00:00
46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/*
|
|
* This file is part of the TREZOR project.
|
|
*
|
|
* Copyright (C) 2014 Pavol Rusnak <stick@satoshilabs.com>
|
|
*
|
|
* This library is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This library 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 Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <libopencm3/stm32/f2/flash.h>
|
|
#include <stdint.h>
|
|
#include "memory.h"
|
|
#include "sha2.h"
|
|
|
|
#define OPTION_BYTES_1 ((uint64_t *)0x1FFFC000)
|
|
#define OPTION_BYTES_2 ((uint64_t *)0x1FFFC008)
|
|
|
|
void memory_protect(void)
|
|
{
|
|
// set RDP level 2 WRP for sectors 0 and 1
|
|
if ((((*OPTION_BYTES_1) & 0xFFFF) == 0xCCFF) && (((*OPTION_BYTES_2) & 0xFFFF) == 0xFFFC)) {
|
|
return; // already set up correctly - bail out
|
|
}
|
|
flash_unlock_option_bytes();
|
|
// WRP + RDP
|
|
flash_program_option_bytes( 0xFFFC0000 + 0xCCFF);
|
|
flash_lock_option_bytes();
|
|
}
|
|
|
|
int memory_bootloader_hash(uint8_t *hash)
|
|
{
|
|
sha256_Raw((const uint8_t *)FLASH_BOOT_START, FLASH_BOOT_LEN, hash);
|
|
sha256_Raw(hash, 32, hash);
|
|
return 32;
|
|
}
|