patch-2.4.10 linux/arch/mips/philips/nino/setup.c

• Lines: 121
• Date: Sun Sep 9 10:43:02 2001
• Orig file: v2.4.9/linux/arch/mips/philips/nino/setup.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.9/linux/arch/mips/philips/nino/setup.c linux/arch/mips/philips/nino/setup.c
@@ -0,0 +1,120 @@
+/*
+ *  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_DEBUG
+extern void set_debug_traps(void);
+extern void breakpoint(void);
+static int remote_debug = 0;
+#endif
+
+static 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;
+}