/* *  linux/arch/mips/philips/nino/setup.c * *  Copyright (C) 2001 Steven J. Hill (sjhill@realitydiluted.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * *  Interrupt and exception initialization for Philips Nino. */#include <linux/console.h>#include <linux/init.h>#include <linux/interrupt.h>#include <linux/mc146818rtc.h>#include <linux/sched.h>#include <asm/addrspace.h>#include <asm/gdb-stub.h>#include <asm/irq.h>#include <asm/wbflush.h>#include <asm/tx3912.h>extern struct rtc_ops nino_rtc_ops;extern void nino_wait(void);extern void setup_nino_reset_vectors(void);extern asmlinkage void nino_handle_int(void);extern int setup_nino_irq(int, struct irqaction *);void (*board_time_init) (struct irqaction * irq);#ifdef CONFIG_REMOTE_DEBUGextern void set_debug_traps(void);extern void breakpoint(void);static int remote_debug = 0;#endifstatic void __init nino_irq_setup(void){	unsigned int tmp;	/* Turn all interrupts off */	IntEnable1 = 0;	IntEnable2 = 0;	IntEnable3 = 0;	IntEnable4 = 0;	IntEnable5 = 0;	IntEnable6 = 0;	/* Clear all interrupts */	IntClear1 = 0xffffffff;	IntClear2 = 0xffffffff;	IntClear3 = 0xffffffff;	IntClear4 = 0xffffffff;	IntClear5 = 0xffffffff;	IntClear6 = 0xffffffff;	/*	 * Enable only the interrupts for the UART and negative	 * edge (1-to-0) triggered multi-function I/O pins.	 */    	change_cp0_status(ST0_BEV, 0);	tmp = read_32bit_cp0_register(CP0_STATUS);    	change_cp0_status(ST0_IM, tmp | IE_IRQ2 | IE_IRQ4);	/* Register the global interrupt handler */	set_except_vector(0, nino_handle_int);#ifdef CONFIG_REMOTE_DEBUG	if (remote_debug) {		set_debug_traps();		breakpoint();	}#endif}static __init void nino_time_init(struct irqaction *irq){	unsigned int scratch = 0;	/*	 * Enable periodic interrupts	 */	setup_nino_irq(0, irq);	RTCperiodTimer = PER_TIMER_COUNT;	RTCtimerControl = TIM_ENPERTIMER;	IntEnable5 |= INT5_PERIODICINT;	scratch = inl(TX3912_CLK_CTRL_BASE);	scratch |= TX3912_CLK_CTRL_ENTIMERCLK;	outl(scratch, TX3912_CLK_CTRL_BASE);	/* Enable all interrupts */	IntEnable6 |= INT6_GLOBALEN | INT6_PERIODICINT;}void __init nino_setup(void){	irq_setup = nino_irq_setup;	board_time_init = nino_time_init;	/* Base address to use for PC type I/O accesses */	mips_io_port_base = KSEG1ADDR(0xB0C00000);	setup_nino_reset_vectors();	/* Function called during process idle (cpu_idle) */	cpu_wait = nino_wait;#ifdef CONFIG_FB	conswitchp = &dummy_con;#endif#ifdef CONFIG_REMOTE_DEBUG	remote_debug = 1;#endif	rtc_ops = &nino_rtc_ops;}