mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 18:11:56 +00:00
4476c96769
platform_get/set_rtc_time() is not implemented by any of the supported xtensa platforms. Remove the facility completely. The initial seconds for xtime come from read_persistent_clock() which returns just 0 in the generic implementation. Platforms that sport a persistent clock can implement this function. This is needed to implement the ccount as a clock source. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Chris Zankel <chris@zankel.net>
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/*
|
|
* 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; });
|
|
|
|
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
|
|
_F(void, calibrate_ccount, (void),
|
|
{
|
|
printk ("ERROR: Cannot calibrate cpu frequency! Assuming 100MHz.\n");
|
|
ccount_per_jiffy = 100 * (1000000UL/HZ);
|
|
});
|
|
#endif
|
|
|