mirror of
https://github.com/RIOT-OS/RIOT.git
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94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
/*
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* Copyright (C) 2017 Kaspar Schleiser <kaspar@schleiser.de>
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* Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup bootloaders
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* @{
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*
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* @file
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* @brief Serial UART riot-based bootloader
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*
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* @author Kaspar Schleiser <kaspar@schleiser.de>
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* @author Francisco Acosta <francisco.acosta@inria.fr>
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* @author Benjamin Valentin <benjamin.valentin@ml-pa.com>
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*
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* @}
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*/
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#include "cpu.h"
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#include "panic.h"
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#include "riotboot/slot.h"
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#include "riotboot/serial.h"
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static int _get_slot(void)
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{
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uint32_t version = 0;
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int slot = -1;
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if (!IS_USED(MODULE_RIOTBOOT_SLOT)) {
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return -1;
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}
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for (unsigned i = 0; i < riotboot_slot_numof; i++) {
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const riotboot_hdr_t *riot_hdr = riotboot_slot_get_hdr(i);
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if (riotboot_slot_validate(i)) {
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/* skip slot if metadata broken */
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continue;
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}
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if (riot_hdr->start_addr != riotboot_slot_get_image_startaddr(i)) {
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continue;
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}
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if (slot == -1 || riot_hdr->version > version) {
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version = riot_hdr->version;
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slot = i;
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}
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}
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return slot;
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}
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static void _boot_default(int slot)
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{
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if (!IS_USED(MODULE_RIOTBOOT_SLOT)) {
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/* boot 'raw' firmware image */
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cpu_jump_to_image(SLOT0_OFFSET);
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return;
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}
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if (slot == -1) {
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slot = _get_slot();
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}
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if (slot != -1) {
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riotboot_slot_jump(slot);
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}
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}
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void kernel_init(void)
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{
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int slot = -1;
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if (IS_USED(MODULE_RIOTBOOT_SERIAL)) {
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slot = riotboot_serial_loader();
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}
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irq_disable();
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_boot_default(slot);
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/* serious trouble! nothing to boot */
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while (1) {}
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}
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NORETURN void core_panic(core_panic_t crash_code, const char *message)
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{
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(void)crash_code;
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(void)message;
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while (1) {}
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}
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