1 // SPDX-License-Identifier: GPL-2.0+
2 /*
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>
14  */
15 
16 #include <common.h>
17 #include <cpu_func.h>
18 #include <asm/io.h>
19 #include <asm/arch/hardware.h>
20 #include <asm/arch/at91_st.h>
21 
board_reset(void)22 void  __attribute__((weak)) board_reset(void)
23 {
24 	/* true empty function for defining weak symbol */
25 }
26 
reset_cpu(void)27 void reset_cpu(void)
28 {
29 	at91_st_t *st = (at91_st_t *) ATMEL_BASE_ST;
30 
31 	board_reset();
32 
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 }
42