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/*
* Cirrus Logic EP93xx CPU-specific support.
*
* Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
*
* Copyright (C) 2004, 2005
* Cory T. Tusar, Videon Central, Inc., <ctusar@videon-central.com>
*
* See file CREDITS for list of people who contributed to this project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <common.h>
#include <asm/arch/ep93xx.h>
#include <asm/io.h>
/* We reset the CPU by generating a 1-->0 transition on DeviceCfg bit 31. */
extern void reset_cpu(ulong addr)
{
struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE;
uint32_t value;
/* Unlock DeviceCfg and set SWRST */
writel(0xAA, &syscon->sysswlock);
value = readl(&syscon->devicecfg);
value |= SYSCON_DEVICECFG_SWRST;
writel(value, &syscon->devicecfg);
/* Unlock DeviceCfg and clear SWRST */
writel(0xAA, &syscon->sysswlock);
value = readl(&syscon->devicecfg);
value &= ~SYSCON_DEVICECFG_SWRST;
writel(value, &syscon->devicecfg);
/* Dying... */
while (1)
; /* noop */
}
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