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/types.h>
16#include <linux/pci.h>
17#include <linux/time.h>
18#include <asm/platform.h>
19#include <asm/timex.h>
20#include <asm/param.h>		/* HZ */
21
22#define _F(r,f,a,b)							\
23	r __platform_##f a b;                                   	\
24	r platform_##f a __attribute__((weak, alias("__platform_"#f)))
25
26/*
27 * Default functions that are used if no platform specific function is defined.
28 * (Please, refer to include/asm-xtensa/platform.h for more information)
29 */
30
31_F(void, setup, (char** cmd), { });
32_F(void, restart, (void), { while(1); });
33_F(void, halt, (void), { while(1); });
34_F(void, power_off, (void), { while(1); });
35_F(void, idle, (void), { __asm__ __volatile__ ("waiti 0" ::: "memory"); });
36_F(void, heartbeat, (void), { });
37_F(int,  pcibios_fixup, (void), { return 0; });
38_F(void, pcibios_init, (void), { });
39
40#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
41_F(void, calibrate_ccount, (void),
42{
43	pr_err("ERROR: Cannot calibrate cpu frequency! Assuming 10MHz.\n");
44	ccount_freq = 10 * 1000000UL;
45});
46#endif
47