parent
65bb167db6
commit
21eb49faff
@ -0,0 +1,47 @@
|
|||||||
|
/*
|
||||||
|
* This file is part of the TREZOR project.
|
||||||
|
*
|
||||||
|
* Copyright (C) 2017 Saleem Rashid <trezor@saleemrashid.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 "fastflash.h"
|
||||||
|
|
||||||
|
#include <stdbool.h>
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <string.h>
|
||||||
|
|
||||||
|
#include <libopencm3/cm3/scb.h>
|
||||||
|
|
||||||
|
extern uint32_t __bootloader_loadaddr__[];
|
||||||
|
extern uint32_t __bootloader_runaddr__[];
|
||||||
|
extern uint8_t __bootloader_size__[];
|
||||||
|
|
||||||
|
void load_bootloader() {
|
||||||
|
memcpy(__bootloader_runaddr__, __bootloader_loadaddr__, (size_t) __bootloader_size__);
|
||||||
|
}
|
||||||
|
|
||||||
|
void run_bootloader() {
|
||||||
|
// Relocate vector tables
|
||||||
|
SCB_VTOR = (uint32_t) __bootloader_runaddr__;
|
||||||
|
|
||||||
|
// Set stack pointer
|
||||||
|
__asm__ volatile("msr msp, %0":: "r" (__bootloader_runaddr__[0]));
|
||||||
|
|
||||||
|
// Jump to address
|
||||||
|
((void (*)(void))(__bootloader_runaddr__[1]))();
|
||||||
|
|
||||||
|
while (true);
|
||||||
|
}
|
@ -0,0 +1,26 @@
|
|||||||
|
/*
|
||||||
|
* This file is part of the TREZOR project.
|
||||||
|
*
|
||||||
|
* Copyright (C) 2017 Saleem Rashid <trezor@saleemrashid.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/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef __FASTFLASH_H__
|
||||||
|
#define __FASTFLASH_H__
|
||||||
|
|
||||||
|
void load_bootloader(void);
|
||||||
|
void __attribute__((noreturn)) run_bootloader(void);
|
||||||
|
|
||||||
|
#endif
|
@ -0,0 +1,21 @@
|
|||||||
|
/* STM32F205RE - 512K Flash, 128K RAM */
|
||||||
|
/* program starts at 0x08010000 */
|
||||||
|
MEMORY
|
||||||
|
{
|
||||||
|
rom (rx) : ORIGIN = 0x08010000, LENGTH = 512K - 64K
|
||||||
|
bootloader (rx) : ORIGIN = 0x20000000, LENGTH = __bootloader_size__
|
||||||
|
ram (rwx) : ORIGIN = ORIGIN(bootloader) + LENGTH(bootloader),
|
||||||
|
LENGTH = 128K - LENGTH(bootloader)
|
||||||
|
}
|
||||||
|
|
||||||
|
INCLUDE libopencm3_stm32f2.ld
|
||||||
|
|
||||||
|
SECTIONS
|
||||||
|
{
|
||||||
|
.bootloader : {
|
||||||
|
__bootloader_runaddr__ = .;
|
||||||
|
KEEP (*(.bootloader*))
|
||||||
|
} >bootloader AT >rom
|
||||||
|
|
||||||
|
__bootloader_loadaddr__ = LOADADDR(.bootloader);
|
||||||
|
}
|
Loading…
Reference in new issue