1*62011840SMasahiro Yamada /* 2*62011840SMasahiro Yamada * (C) Copyright 2002 3*62011840SMasahiro Yamada * Lineo, Inc. <www.lineo.com> 4*62011840SMasahiro Yamada * Bernhard Kuhn <bkuhn@lineo.com> 5*62011840SMasahiro Yamada * 6*62011840SMasahiro Yamada * (C) Copyright 2002 7*62011840SMasahiro Yamada * Sysgo Real-Time Solutions, GmbH <www.elinos.com> 8*62011840SMasahiro Yamada * Marius Groeger <mgroeger@sysgo.de> 9*62011840SMasahiro Yamada * 10*62011840SMasahiro Yamada * (C) Copyright 2002 11*62011840SMasahiro Yamada * Sysgo Real-Time Solutions, GmbH <www.elinos.com> 12*62011840SMasahiro Yamada * Alex Zuepke <azu@sysgo.de> 13*62011840SMasahiro Yamada * 14*62011840SMasahiro Yamada * SPDX-License-Identifier: GPL-2.0+ 15*62011840SMasahiro Yamada */ 16*62011840SMasahiro Yamada 17*62011840SMasahiro Yamada #include <common.h> 18*62011840SMasahiro Yamada #include <asm/io.h> 19*62011840SMasahiro Yamada #include <asm/arch/hardware.h> 20*62011840SMasahiro Yamada #include <asm/arch/at91_st.h> 21*62011840SMasahiro Yamada board_reset(void)22*62011840SMasahiro Yamadavoid __attribute__((weak)) board_reset(void) 23*62011840SMasahiro Yamada { 24*62011840SMasahiro Yamada /* true empty function for defining weak symbol */ 25*62011840SMasahiro Yamada } 26*62011840SMasahiro Yamada reset_cpu(ulong ignored)27*62011840SMasahiro Yamadavoid reset_cpu(ulong ignored) 28*62011840SMasahiro Yamada { 29*62011840SMasahiro Yamada at91_st_t *st = (at91_st_t *) ATMEL_BASE_ST; 30*62011840SMasahiro Yamada 31*62011840SMasahiro Yamada board_reset(); 32*62011840SMasahiro Yamada 33*62011840SMasahiro Yamada /* Reset the cpu by setting up the watchdog timer */ 34*62011840SMasahiro Yamada writel(AT91_ST_WDMR_RSTEN | AT91_ST_WDMR_EXTEN | AT91_ST_WDMR_WDV(2), 35*62011840SMasahiro Yamada &st->wdmr); 36*62011840SMasahiro Yamada writel(AT91_ST_CR_WDRST, &st->cr); 37*62011840SMasahiro Yamada /* and let it timeout */ 38*62011840SMasahiro Yamada while (1) 39*62011840SMasahiro Yamada ; 40*62011840SMasahiro Yamada /* Never reached */ 41*62011840SMasahiro Yamada } 42