cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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rtc-starfire.c (1228B)

      1/* rtc-starfire.c: Starfire platform RTC driver.
      2 *
      3 * Author: David S. Miller
      4 * License: GPL
      5 *
      6 * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
      7 */
      8
      9#include <linux/kernel.h>
     10#include <linux/init.h>
     11#include <linux/rtc.h>
     12#include <linux/platform_device.h>
     13
     14#include <asm/oplib.h>
     15
     16static u32 starfire_get_time(void)
     17{
     18	static char obp_gettod[32];
     19	static u32 unix_tod;
     20
     21	sprintf(obp_gettod, "h# %08x unix-gettod",
     22		(unsigned int) (long) &unix_tod);
     23	prom_feval(obp_gettod);
     24
     25	return unix_tod;
     26}
     27
     28static int starfire_read_time(struct device *dev, struct rtc_time *tm)
     29{
     30	rtc_time64_to_tm(starfire_get_time(), tm);
     31	return 0;
     32}
     33
     34static const struct rtc_class_ops starfire_rtc_ops = {
     35	.read_time	= starfire_read_time,
     36};
     37
     38static int __init starfire_rtc_probe(struct platform_device *pdev)
     39{
     40	struct rtc_device *rtc;
     41
     42	rtc = devm_rtc_allocate_device(&pdev->dev);
     43	if (IS_ERR(rtc))
     44		return PTR_ERR(rtc);
     45
     46	rtc->ops = &starfire_rtc_ops;
     47	rtc->range_max = U32_MAX;
     48
     49	platform_set_drvdata(pdev, rtc);
     50
     51	return devm_rtc_register_device(rtc);
     52}
     53
     54static struct platform_driver starfire_rtc_driver = {
     55	.driver		= {
     56		.name	= "rtc-starfire",
     57	},
     58};
     59
     60builtin_platform_driver_probe(starfire_rtc_driver, starfire_rtc_probe);