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/*
* include/asm-arm/arch-at91rm9200/system.h
*
* Copyright (C) 2003 SAN People
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_SYSTEM_H
#define __ASM_ARCH_SYSTEM_H
#include <asm/hardware.h>
static inline void arch_idle(void)
{
/*
* Disable the processor clock. The processor will be automatically
* re-enabled by an interrupt or by a reset.
*/
// at91_sys_write(AT91_PMC_SCDR, AT91_PMC_PCK);
/*
* Set the processor (CP15) into 'Wait for Interrupt' mode.
* Unlike disabling the processor clock via the PMC (above)
* this allows the processor to be woken via JTAG.
*/
cpu_do_idle();
}
static inline void arch_reset(char mode)
{
/*
* Perform a hardware reset with the use of the Watchdog timer.
*/
at91_sys_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
}
#define ARCH_ID_AT91RM9200 0x09200080
#define ARCH_ID_AT91SAM9261 0x019000a0
static inline unsigned long arch_identify(void)
{
return at91_sys_read(AT91_DBGU_CIDR) & (AT91_CIDR_EPROC | AT91_CIDR_ARCH);
}
#endif
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