blob: 91e375146ad7ff51d2f35e29027acae4d4b621c1 [file] [log] [blame]
Tom Rini10e47792018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Jens Scharsig9bbaae32010-02-03 22:47:35 +01002/*
3 * (C) Copyright 2002
4 * Lineo, Inc. <www.lineo.com>
5 * Bernhard Kuhn <bkuhn@lineo.com>
6 *
7 * (C) Copyright 2002
8 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
9 * Marius Groeger <mgroeger@sysgo.de>
10 *
11 * (C) Copyright 2002
12 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
13 * Alex Zuepke <azu@sysgo.de>
Jens Scharsig9bbaae32010-02-03 22:47:35 +010014 */
15
16#include <common.h>
Simon Glassafb02152019-12-28 10:45:01 -070017#include <cpu_func.h>
Jens Scharsig9bbaae32010-02-03 22:47:35 +010018#include <asm/io.h>
19#include <asm/arch/hardware.h>
20#include <asm/arch/at91_st.h>
21
Andreas Bießmann470b4b02010-11-30 09:45:05 +000022void __attribute__((weak)) board_reset(void)
23{
24 /* true empty function for defining weak symbol */
25}
Jens Scharsig9bbaae32010-02-03 22:47:35 +010026
Harald Seiler6f14d5f2020-12-15 16:47:52 +010027void reset_cpu(void)
Jens Scharsig9bbaae32010-02-03 22:47:35 +010028{
Jens Scharsig58aa5632011-02-19 06:17:02 +000029 at91_st_t *st = (at91_st_t *) ATMEL_BASE_ST;
Jens Scharsig9bbaae32010-02-03 22:47:35 +010030
Andreas Bießmann470b4b02010-11-30 09:45:05 +000031 board_reset();
Jens Scharsig9bbaae32010-02-03 22:47:35 +010032
33 /* Reset the cpu by setting up the watchdog timer */
34 writel(AT91_ST_WDMR_RSTEN | AT91_ST_WDMR_EXTEN | AT91_ST_WDMR_WDV(2),
35 &st->wdmr);
36 writel(AT91_ST_CR_WDRST, &st->cr);
37 /* and let it timeout */
38 while (1)
39 ;
40 /* Never reached */
41}