arch/m68k/mvme147/config.c

Source file repositories/reference/linux-study-clean/arch/m68k/mvme147/config.c

File Facts

System
Linux kernel
Corpus path
arch/m68k/mvme147/config.c
Extension
.c
Size
4741 bytes
Lines
211
Domain
Architecture Layer
Bucket
arch/m68k
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
/*
 *  arch/m68k/mvme147/config.c
 *
 *  Copyright (C) 1996 Dave Frascone [chaos@mindspring.com]
 *  Cloned from        Richard Hirst [richard@sleepie.demon.co.uk]
 *
 * Based on:
 *
 *  Copyright (C) 1993 Hamish Macdonald
 */

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/clocksource.h>
#include <linux/console.h>
#include <linux/linkage.h>
#include <linux/init.h>
#include <linux/major.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/rtc/m48t59.h>

#include <asm/bootinfo.h>
#include <asm/bootinfo-vme.h>
#include <asm/byteorder.h>
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/traps.h>
#include <asm/machdep.h>
#include <asm/mvme147hw.h>
#include <asm/config.h>

#include "mvme147.h"

static void mvme147_get_model(char *model);
static void __init mvme147_sched_init(void);
extern void mvme147_reset (void);


int __init mvme147_parse_bootinfo(const struct bi_record *bi)
{
	uint16_t tag = be16_to_cpu(bi->tag);
	if (tag == BI_VME_TYPE || tag == BI_VME_BRDINFO)
		return 0;
	else
		return 1;
}

void mvme147_reset(void)
{
	pr_info("\r\n\nCalled mvme147_reset\r\n");
	m147_pcc->watchdog = 0x0a;	/* Clear timer */
	m147_pcc->watchdog = 0xa5;	/* Enable watchdog - 100ms to reset */
	while (1)
		;
}

static void mvme147_get_model(char *model)
{
	sprintf(model, "Motorola MVME147");
}

/*
 * This function is called during kernel startup to initialize
 * the mvme147 IRQ handling routines.
 */

static void __init mvme147_init_IRQ(void)
{
	m68k_setup_user_interrupt(VEC_USER, 192);
}

void __init config_mvme147(void)
{
	mach_sched_init		= mvme147_sched_init;
	mach_init_IRQ		= mvme147_init_IRQ;
	mach_reset		= mvme147_reset;
	mach_get_model		= mvme147_get_model;

	/* Board type is only set by newer versions of vmelilo/tftplilo */
	if (!vme_brdtype)
		vme_brdtype = VME_TYPE_MVME147;
}

static struct resource m48t59_rsrc[] = {
	DEFINE_RES_MEM(MVME147_RTC_BASE, 0x800),
};

Annotation

Implementation Notes