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5cb843ca0f
The various reset routines in mach-realview rely on an FPGA to power-cycle the board after writing some magic runes to memory-mapped registers. This patch adds a dsb() following the writes, so that they become visible before we mdelay(1000) in the arch_reset code. Without this patch, the timeout would expire sporadically, causing the reset to fail. Signed-off-by: Will Deacon <will.deacon@arm.com>
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/*
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* arch/arm/mach-realview/include/mach/system.h
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*
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* Copyright (C) 2003 ARM Limited
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* Copyright (C) 2000 Deep Blue Solutions Ltd
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __ASM_ARCH_SYSTEM_H
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#define __ASM_ARCH_SYSTEM_H
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#include <linux/io.h>
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#include <mach/hardware.h>
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#include <mach/platform.h>
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void (*realview_reset)(char mode);
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static inline void arch_idle(void)
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{
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/*
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* This should do all the clock switching
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* and wait for interrupt tricks
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*/
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cpu_do_idle();
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}
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static inline void arch_reset(char mode, const char *cmd)
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{
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/*
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* To reset, we hit the on-board reset register
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* in the system FPGA
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*/
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if (realview_reset)
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realview_reset(mode);
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dsb();
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}
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#endif
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