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6e20aa243d
Break out SoC specific code from the GR-Peach board and put it into the board/renesas/common directory so it can be easily shared between the GR-Peach and Genmai boards. Signed-off-by: Magnus Damm <damm@opensource.se>
28 lines
579 B
C
28 lines
579 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Renesas Electronics
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* Copyright (C) Chris Brandt
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*/
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#include <init.h>
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#include <asm/io.h>
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#define RZA1_WDT_BASE 0xfcfe0000
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#define WTCSR 0x00
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#define WTCNT 0x02
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#define WRCSR 0x04
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void __weak reset_cpu(void)
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{
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/* Dummy read (must read WRCSR:WOVF at least once before clearing) */
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readb(RZA1_WDT_BASE + WRCSR);
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writew(0xa500, RZA1_WDT_BASE + WRCSR);
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writew(0x5a5f, RZA1_WDT_BASE + WRCSR);
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writew(0x5a00, RZA1_WDT_BASE + WTCNT);
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writew(0xa578, RZA1_WDT_BASE + WTCSR);
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for (;;)
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asm volatile("wfi");
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}
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