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
arch_idle(void)28 static inline void arch_idle(void)
29 {
30 /*
31 * Disable the processor clock. The processor will be automatically
32 * re-enabled by an interrupt or by a reset.
33 */
34 // at91_sys_write(AT91_PMC_SCDR, AT91_PMC_PCK);
35
36 /*
37 * Set the processor (CP15) into 'Wait for Interrupt' mode.
38 * Unlike disabling the processor clock via the PMC (above)
39 * this allows the processor to be woken via JTAG.
40 */
41 cpu_do_idle();
42 }
43
44 void (*at91_arch_reset)(void);
45
arch_reset(char mode)46 static inline void arch_reset(char mode)
47 {
48 /* call the CPU-specific reset function */
49 if (at91_arch_reset)
50 (at91_arch_reset)();
51 }
52
53 #endif
54