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/*
* arch/xtensa/kernel/platform.c
*
* Default platform functions.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2005 Tensilica Inc.
*
* Chris Zankel <chris@zankel.net>
*/
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/time.h>
#include <asm/platform.h>
#include <asm/timex.h>
#include <asm/param.h> /* HZ */
#define _F(r,f,a,b) \
r __platform_##f a b; \
r platform_##f a __attribute__((weak, alias("__platform_"#f)))
/*
* Default functions that are used if no platform specific function is defined.
* (Please, refer to include/asm-xtensa/platform.h for more information)
*/
_F(void, setup, (char** cmd), { });
_F(void, init_irq, (void), { });
_F(void, restart, (void), { while(1); });
_F(void, halt, (void), { while(1); });
_F(void, power_off, (void), { while(1); });
_F(void, idle, (void), { __asm__ __volatile__ ("waiti 0" ::: "memory"); });
_F(void, heartbeat, (void), { });
_F(int, pcibios_fixup, (void), { return 0; });
_F(void, pcibios_init, (void), { });
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
_F(void, calibrate_ccount, (void),
{
pr_err("ERROR: Cannot calibrate cpu frequency! Assuming 10MHz.\n");
ccount_per_jiffy = 10 * (1000000UL/HZ);
});
#endif
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