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platform.c
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platform.c
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/*
* platform.c - platform specific hacks
*
* Copyright (C) 2018 Sean Cross,
* Sergei Glushchenko
* Author: Sergei Glushchenko <gl.sergei@gmail.com>
*
* This file is a part of U2F firmware
* Bootloader-spcific parts were copied ftom toboot.
*
* 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/>.
*
* As additional permission under GNU GPL version 3 section 7, you may
* distribute non-source form of the Program without the copy of the
* GNU GPL normally required by section 4, provided you inform the
* recipients of GNU GPL by a written offer.
*
*/
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "board.h"
#include "sys.h"
#include "toboot.h"
#include <mcu/efm32.h>
static struct toboot_configuration
__attribute__ ((used, section(".toboot.config")))
toboot_config = {
.align = 0,
.magic = TOBOOT_V2_MAGIC,
.reserved_gen = 0,
.start = 16,
.config = TOBOOT_CONFIG_FLAG_AUTORUN,
.lock_entry = 0,
.erase_mask_lo = 0x00000000,
.erase_mask_hi = 0xc0000000,
.reserved_hash = 0
};
#define LOCKBITS_BASE (0x0FE04000UL) /* Lock-bits page base address */
#define DEBUG_LOCK_WORD (LOCKBITS_BASE + (127 * 4))
const volatile uint32_t *dlw = (volatile uint32_t *) DEBUG_LOCK_WORD;
#if defined(ENFORCE_DEBUG_LOCK)
/* Debug lock EFM32HG device by clearing DEBUG LOCK WORD */
static void
debug_lock_maybe (void)
{
uint8_t zero[] = { 0x0, 0x0, 0x0, 0x0 };
if (*dlw != 0)
flash_write ((uintptr_t) dlw, zero, sizeof (zero));
}
#endif
/* Preform platform-specific actions */
void
platform_init (void)
{
#if defined(ENFORCE_DEBUG_LOCK)
debug_lock_maybe ();
#endif
}