1/*
2 * Platform specific functions
3 *
4 * This file is subject to the terms and conditions of the GNU General
5 * Public License.  See the file "COPYING" in the main directory of
6 * this archive for more details.
7 *
8 * Copyright (C) 2001 - 2005 Tensilica Inc.
9 */
10
11#ifndef _XTENSA_PLATFORM_H
12#define _XTENSA_PLATFORM_H
13
14#include <linux/types.h>
15#include <asm/bootparam.h>
16
17/*
18 * platform_init is called before the mmu is initialized to give the
19 * platform a early hook-up. bp_tag_t is a list of configuration tags
20 * passed from the boot-loader.
21 */
22extern void platform_init(bp_tag_t*);
23
24/*
25 * platform_setup is called from setup_arch with a pointer to the command-line
26 * string.
27 */
28extern void platform_setup (char **);
29
30/*
31 * platform_restart is called to restart the system.
32 */
33extern void platform_restart (void);
34
35/*
36 * platform_halt is called to stop the system and halt.
37 */
38extern void platform_halt (void);
39
40/*
41 * platform_power_off is called to stop the system and power it off.
42 */
43extern void platform_power_off (void);
44
45/*
46 * platform_idle is called from the idle function.
47 */
48extern void platform_idle (void);
49
50/*
51 * platform_heartbeat is called every HZ
52 */
53extern void platform_heartbeat (void);
54
55/*
56 * platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE)
57 */
58extern void platform_calibrate_ccount (void);
59
60/*
61 * Flush and reset the mmu, simulate a processor reset, and
62 * jump to the reset vector.
63 */
64void cpu_reset(void) __attribute__((noreturn));
65
66#endif	/* _XTENSA_PLATFORM_H */
67