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https://github.com/trezor/trezor-firmware.git
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48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
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/*
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* This file is part of the TREZOR project.
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*
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* Copyright (C) 2017 Saleem Rashid <trezor@saleemrashid.com>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "fastflash.h"
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#include <stdbool.h>
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#include <stdint.h>
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#include <string.h>
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#include <libopencm3/cm3/scb.h>
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extern uint32_t __bootloader_loadaddr__[];
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extern uint32_t __bootloader_runaddr__[];
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extern uint8_t __bootloader_size__[];
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void load_bootloader() {
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memcpy(__bootloader_runaddr__, __bootloader_loadaddr__, (size_t) __bootloader_size__);
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}
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void run_bootloader() {
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// Relocate vector tables
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SCB_VTOR = (uint32_t) __bootloader_runaddr__;
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// Set stack pointer
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__asm__ volatile("msr msp, %0":: "r" (__bootloader_runaddr__[0]));
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// Jump to address
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((void (*)(void))(__bootloader_runaddr__[1]))();
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while (true);
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}
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