1/* 2 * arch/arm/mach-at91/include/mach/system.h 3 * 4 * Copyright (C) 2003 SAN People 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21#ifndef __ASM_ARCH_SYSTEM_H 22#define __ASM_ARCH_SYSTEM_H 23 24#include <mach/hardware.h> 25#include <mach/at91_st.h> 26#include <mach/at91_dbgu.h> 27#include <mach/at91_pmc.h> 28 29static inline void arch_idle(void) 30{ 31 /* 32 * Disable the processor clock. The processor will be automatically 33 * re-enabled by an interrupt or by a reset. 34 */ 35 at91_sys_write(AT91_PMC_SCDR, AT91_PMC_PCK); 36#ifndef CONFIG_CPU_ARM920T 37 /* 38 * Set the processor (CP15) into 'Wait for Interrupt' mode. 39 * Post-RM9200 processors need this in conjunction with the above 40 * to save power when idle. 41 */ 42 cpu_do_idle(); 43#endif 44} 45 46void (*at91_arch_reset)(void); 47 48static inline void arch_reset(char mode, const char *cmd) 49{ 50 /* call the CPU-specific reset function */ 51 if (at91_arch_reset) 52 (at91_arch_reset)(); 53} 54 55#endif 56