arch/mips/loongson2ef/common/time.c

Source file repositories/reference/linux-study-clean/arch/mips/loongson2ef/common/time.c

File Facts

System
Linux kernel
Corpus path
arch/mips/loongson2ef/common/time.c
Extension
.c
Size
626 bytes
Lines
29
Domain
Architecture Layer
Bucket
arch/mips
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
 * Author: Fuxin Zhang, zhangfx@lemote.com
 *
 * Copyright (C) 2009 Lemote Inc.
 * Author: Wu Zhangjin, wuzhangjin@gmail.com
 */
#include <asm/mc146818-time.h>
#include <asm/time.h>
#include <asm/hpet.h>

#include <loongson.h>
#include <cs5536/cs5536_mfgpt.h>

void __init plat_time_init(void)
{
	/* setup mips r4k timer */
	mips_hpt_frequency = cpu_clock_freq / 2;

	setup_mfgpt0_timer();
}

void read_persistent_clock64(struct timespec64 *ts)
{
	ts->tv_sec = mc146818_get_cmos_time();
	ts->tv_nsec = 0;
}

Annotation

Implementation Notes