1/*
2 * arch/xtensa/kernel/platform.c
3 *
4 * Default platform functions.
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License.  See the file "COPYING" in the main directory of this archive
8 * for more details.
9 *
10 * Copyright (C) 2005 Tensilica Inc.
11 *
12 * Chris Zankel <chris@zankel.net>
13 */
14
15#include <linux/printk.h>
16#include <linux/types.h>
17#include <asm/platform.h>
18#include <asm/timex.h>
19
20/*
21 * Default functions that are used if no platform specific function is defined.
22 * (Please, refer to arch/xtensa/include/asm/platform.h for more information)
23 */
24
25void __weak __init platform_init(bp_tag_t *first)
26{
27}
28
29void __weak __init platform_setup(char **cmd)
30{
31}
32
33void __weak platform_idle(void)
34{
35	__asm__ __volatile__ ("waiti 0" ::: "memory");
36}
37
38#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
39void __weak platform_calibrate_ccount(void)
40{
41	pr_err("ERROR: Cannot calibrate cpu frequency! Assuming 10MHz.\n");
42	ccount_freq = 10 * 1000000UL;
43}
44#endif
45