77322aa896
The FSF address has changed in the past. Instead of updating it each time the address changes, just drop it completely treewide. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
/*
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* Copyright (C) 2012 Antony Pavlov <antonynpavlov@gmail.com>
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*
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* This file is part of barebox.
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* See file CREDITS for list of people who contributed to this project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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/**
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* @file
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* @brief Resetting an JZ4755-based board
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*/
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#include <common.h>
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#include <io.h>
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#include <mach/jz4750d_regs.h>
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#define JZ_EXTAL 24000000
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static void __noreturn jz4750d_halt(void)
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{
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while (1) {
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__asm__(".set push;\n"
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".set mips3;\n"
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"wait;\n"
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".set pop;\n"
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);
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}
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unreachable();
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}
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void __noreturn reset_cpu(ulong addr)
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{
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__raw_writew(WDT_TCSR_PRESCALE4 | WDT_TCSR_EXT_EN, (u16 *)WDT_TCSR);
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__raw_writew(0, (u16 *)WDT_TCNT);
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/* reset after 4ms */
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__raw_writew(JZ_EXTAL / 1000, (u16 *)WDT_TDR);
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/* enable wdt clock */
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__raw_writel(TCU_TSCR_WDTSC, (u32 *)TCU_TSCR);
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/* start wdt */
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__raw_writeb(WDT_TCER_TCEN, (u8 *)WDT_TCER);
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unreachable();
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}
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EXPORT_SYMBOL(reset_cpu);
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void __noreturn poweroff()
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{
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u32 ctrl;
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shutdown_barebox();
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do {
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ctrl = readl((u32 *)RTC_RCR);
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} while (!(ctrl & RTC_RCR_WRDY));
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writel(RTC_HCR_PD, (u32 *)RTC_HCR);
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jz4750d_halt();
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}
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EXPORT_SYMBOL(poweroff);
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