4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2003, 2004, 2006 Develer S.r.l. (http://www.develer.com/)
30 * Copyright 2000 Bernie Innocenti <bernie@codewiz.org>
34 * \brief Flash boot loader main.
35 * This is a simple generic bootloader app.
36 * It requires only a serial port to work.
37 * Try to receive a file through XMODEM protocol
38 * and flash it on program memory.
39 * BOOT_INIT, BOOT_END are macros used to perform special operations
40 * respectively at boot start and boot end and are CPU dependant.
41 * The macro START_APP() jumps to main application start.
44 * \author Stefano Fedrigo <aleph@develer.com>
45 * \author Francesco Sacchi <batt@develer.com>
46 * \author Daniele Basile <asterix@develer.com>
49 #include "hw/hw_boot.h"
50 #include "cfg/cfg_ser.h"
52 #include <net/xmodem.h>
54 #include <cfg/compiler.h>
55 #include <cfg/debug.h>
56 #include <cfg/macros.h> /* BV() */
59 #include <drv/timer.h>
60 #include <drv/flash_avr.h>
69 * This function disable the watchdog timer early after a reset.
70 * We must do it very soon because new AVR cores do not disable
71 * the watchdog timer after a cpu reset. In this way the watchdog
72 * timer is still enabled, continuously resetting the cpu. This is
73 * necessary only with new AVR cores, for other cores this code has
78 // Function prototype of watchdog reset.
79 void wdt_init(void) __attribute__((naked)) __attribute__((section(".init3")));
80 // Function implementation of watchdog reset.
96 // Set up flash programming functions.
97 flash_avr_init(&flash);
106 /* Open the main communication port */
108 ser_init(&ser, CONFIG_BOOT_PORT);
109 ser_setbaudrate(&ser, CONFIG_BOOT_BAUDRATE);
111 xmodem_recv(&ser.fd, &flash.fd);
113 kfile_close(&flash.fd);
114 kfile_close(&ser.fd);