arch/mips/dec/reset.c

Source file repositories/reference/linux-study-clean/arch/mips/dec/reset.c

File Facts

System
Linux kernel
Corpus path
arch/mips/dec/reset.c
Extension
.c
Size
777 bytes
Lines
44
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
/*
 * Reset a DECstation machine.
 *
 * Copyright (C) 199x  the Anonymous
 * Copyright (C) 2001, 2002, 2003  Maciej W. Rozycki
 */
#include <linux/interrupt.h>
#include <linux/linkage.h>

#include <asm/addrspace.h>

#include <asm/dec/reset.h>

typedef void __noreturn (* noret_func_t)(void);

static inline void __noreturn back_to_prom(void)
{
	noret_func_t func = (void *)CKSEG1ADDR(0x1fc00000);

	func();
}

void __noreturn dec_machine_restart(char *command)
{
	back_to_prom();
}

void __noreturn dec_machine_halt(void)
{
	back_to_prom();
}

void __noreturn dec_machine_power_off(void)
{
    /* DECstations don't have a software power switch */
	back_to_prom();
}

irqreturn_t dec_intr_halt(int irq, void *dev_id)
{
	dec_machine_halt();
}

Annotation

Implementation Notes