1
0
mirror of https://github.com/trezor/trezor-firmware.git synced 2024-11-22 23:48:12 +00:00

firmware: Start fastflash when left button held

This commit is contained in:
Saleem Rashid 2017-06-10 19:42:10 +01:00 committed by Pavol Rusnak
parent 65bb167db6
commit 21eb49faff
5 changed files with 114 additions and 0 deletions

View File

@ -1,4 +1,11 @@
ifeq ($(FASTFLASH),1)
APPVER = 2.0.0
OBJS += fastflash.o
OBJS += bootloader.o
else
APPVER = 1.0.0
endif
NAME = trezor
@ -59,6 +66,10 @@ OBJS += protob/types.pb.o
include ../Makefile.include
ifeq ($(FASTFLASH),1)
CFLAGS += -DFASTFLASH
endif
CFLAGS += -Wno-sequence-point
CFLAGS += -Iprotob -DPB_FIELD_16BIT=1
CFLAGS += -DQR_MAX_VERSION=0

47
firmware/fastflash.c Normal file
View File

@ -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);
}

26
firmware/fastflash.h Normal file
View File

@ -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

View File

@ -29,6 +29,7 @@
#include "rng.h"
#include "timer.h"
#include "buttons.h"
#include "fastflash.h"
uint32_t __stack_chk_guard;
@ -98,6 +99,14 @@ int main(void)
__stack_chk_guard = random32(); // this supports compiler provided unpredictable stack protection checks
#endif
#if FASTFLASH
uint16_t state = gpio_port_read(BTN_PORT);
if ((state & BTN_PIN_NO) == 0) {
load_bootloader();
run_bootloader();
}
#endif
timer_init();
#if DEBUG_LINK

21
memory_app_2.0.0.ld Normal file
View File

@ -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);
}