patch-2.4.0-test3 linux/arch/mips/cobalt/reset.c

• Lines: 61
• Date: Sun Jul 9 22:18:15 2000
• Orig file: v2.4.0-test2/linux/arch/mips/cobalt/reset.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test2/linux/arch/mips/cobalt/reset.c linux/arch/mips/cobalt/reset.c
@@ -0,0 +1,60 @@
+/*
+ *  Reset a Cobalt Qube.
+ */
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/processor.h>
+#include <asm/reboot.h>
+#include <asm/system.h>
+
+void cobalt_machine_restart(char *command)
+{
+	*(volatile char *)0xbc000000 = 0x0f;
+
+	/*
+	 * Ouch, we're still alive ... This time we take the silver bullet ...
+	 * ... and find that we leave the hardware in a state in which the
+	 * kernel in the flush locks up somewhen during of after the PCI
+	 * detection stuff.
+	 */
+	set_cp0_status((ST0_BEV | ST0_ERL), (ST0_BEV | ST0_ERL));
+	set_cp0_config(CONFIG_CM_CMASK, CONFIG_CM_UNCACHED);
+	flush_cache_all();
+	write_32bit_cp0_register(CP0_WIRED, 0);
+	__asm__ __volatile__(
+		"jr\t%0"
+		:
+		: "r" (0xbfc00000));
+}
+
+extern int led_state;
+#define kLED            0xBC000000
+#define LEDSet(x)       (*(volatile unsigned char *) kLED) = (( unsigned char)x)
+
+void cobalt_machine_halt(void)
+{
+	int mark;
+
+	// Blink our cute little LED (number 3)...
+	while (1) {
+		led_state = led_state | ( 1 << 3 );
+		LEDSet(led_state);  
+		mark = jiffies;
+		while (jiffies<(mark+HZ));
+		led_state = led_state & ~( 1 << 3 );
+		LEDSet(led_state);
+		mark = jiffies;
+		while (jiffies<(mark+HZ));
+	} 
+}
+
+/*
+ * This triggers the luser mode device driver for the power switch ;-)
+ */
+void cobalt_machine_power_off(void)
+{
+	printk("You can switch the machine off now.\n");
+	cobalt_machine_halt();
+}