1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2002
3*4882a593Smuzhiyun * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
4*4882a593Smuzhiyun * Marius Groeger <mgroeger@sysgo.de>
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * (C) Copyright 2002
7*4882a593Smuzhiyun * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * Copyright (C) 2011 Andes Technology Corporation
10*4882a593Smuzhiyun * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
11*4882a593Smuzhiyun * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
12*4882a593Smuzhiyun *
13*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
14*4882a593Smuzhiyun */
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun /* CPU specific code */
17*4882a593Smuzhiyun #include <common.h>
18*4882a593Smuzhiyun #include <command.h>
19*4882a593Smuzhiyun #include <watchdog.h>
20*4882a593Smuzhiyun #include <asm/cache.h>
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun #include <faraday/ftwdt010_wdt.h>
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun /*
25*4882a593Smuzhiyun * cleanup_before_linux() is called just before we call linux
26*4882a593Smuzhiyun * it prepares the processor for linux
27*4882a593Smuzhiyun *
28*4882a593Smuzhiyun * we disable interrupt and caches.
29*4882a593Smuzhiyun */
cleanup_before_linux(void)30*4882a593Smuzhiyun int cleanup_before_linux(void)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun disable_interrupts();
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun /* turn off I/D-cache */
35*4882a593Smuzhiyun cache_flush();
36*4882a593Smuzhiyun icache_disable();
37*4882a593Smuzhiyun dcache_disable();
38*4882a593Smuzhiyun return 0;
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun
do_reset(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])41*4882a593Smuzhiyun int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
42*4882a593Smuzhiyun {
43*4882a593Smuzhiyun disable_interrupts();
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun /*
46*4882a593Smuzhiyun * reset to the base addr of andesboot.
47*4882a593Smuzhiyun * currently no ROM loader at addr 0.
48*4882a593Smuzhiyun * do not use reset_cpu(0);
49*4882a593Smuzhiyun */
50*4882a593Smuzhiyun #ifdef CONFIG_FTWDT010_WATCHDOG
51*4882a593Smuzhiyun /*
52*4882a593Smuzhiyun * workaround: if we use CONFIG_HW_WATCHDOG with ftwdt010, will lead
53*4882a593Smuzhiyun * automatic hardware reset when booting Linux.
54*4882a593Smuzhiyun * Please do not use CONFIG_HW_WATCHDOG and WATCHDOG_RESET() here.
55*4882a593Smuzhiyun */
56*4882a593Smuzhiyun ftwdt010_wdt_reset();
57*4882a593Smuzhiyun while (1)
58*4882a593Smuzhiyun ;
59*4882a593Smuzhiyun #endif /* CONFIG_FTWDT010_WATCHDOG */
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun /*NOTREACHED*/
62*4882a593Smuzhiyun }
63