patch-2.1.110 linux/include/asm-arm/arch-nexuspci/time.h

• Lines: 50
• Date: Sat Jul 18 11:55:25 1998
• Orig file: v2.1.109/linux/include/asm-arm/arch-nexuspci/time.h
• Orig date: Fri May 8 23:14:54 1998

diff -u --recursive --new-file v2.1.109/linux/include/asm-arm/arch-nexuspci/time.h linux/include/asm-arm/arch-nexuspci/time.h
@@ -3,10 +3,13 @@
  *
  * Copyright (c) 1997 Phil Blundell.
  *
- * Nexus PCI card has no real-time clock.
- *
+ * Nexus PCI card has no real-time clock.  We get timer ticks from the
+ * SCC chip.
  */
 
+#define UART_BASE		0xfff00000
+#define INTCONT			0xffe00000
+
 #define update_rtc()
 
 extern __inline__ unsigned long gettimeoffset (void)
@@ -16,12 +19,31 @@
 
 extern __inline__ int reset_timer (void)
 {
-	return 0;
+	static int count = 50;
+	writeb(0x90, UART_BASE + 8);
+	if (--count == 0)
+	{
+		static int state = 1;
+		state ^= 1;
+		writeb(0x1a + state, INTCONT);
+		count = 50;
+	}
+	readb(UART_BASE + 0x14);
+	readb(UART_BASE + 0x14);
+	readb(UART_BASE + 0x14);
+	readb(UART_BASE + 0x14);
+	readb(UART_BASE + 0x14);
+	readb(UART_BASE + 0x14);
+	return 1;
 }
 
 extern __inline__ unsigned long setup_timer (void)
 {
-	reset_timer ();
+	int tick = 3686400 / 16 / 2 / 100;
+	writeb(tick & 0xff, UART_BASE + 0x1c);
+	writeb(tick >> 8, UART_BASE + 0x18);
+	writeb(0x80, UART_BASE + 8);
+	writeb(0x10, UART_BASE + 0x14);
 	/*
 	 * Default the date to 1 Jan 1970 0:0:0
 	 * You will have to run a time daemon to set the