patch-2.3.49 linux/include/asm-arm/arch-nexuspci/uncompress.h

• Lines: 61
• Date: Mon Feb 28 14:16:37 2000
• Orig file: v2.3.48/linux/include/asm-arm/arch-nexuspci/uncompress.h
• Orig date: Sun Apr 12 11:42:15 1998

diff -u --recursive --new-file v2.3.48/linux/include/asm-arm/arch-nexuspci/uncompress.h linux/include/asm-arm/arch-nexuspci/uncompress.h
@@ -1,18 +1,56 @@
 /*
  * linux/include/asm-arm/arch-nexuspci/uncompress.h
- *  from linux/include/asm-arm/arch-ebsa110/uncompress.h
  *
- * Copyright (C) 1996,1997,1998 Russell King
+ * Copyright (C) 1998, 1999, 2000 Philip Blundell
  */
 
+#include <asm/hardware.h>
+#include <asm/io.h>
+
+/*
+ * Write a character to the UART
+ */
+void _ll_write_char(char c)
+{
+	while (!(__raw_readb(DUART_START + 0x4) & 0x4))
+		;
+	__raw_writeb(c, DUART_START + 0xc);
+}
+
 /*
  * This does not append a newline
  */
 static void puts(const char *s)
 {
+	while (*s)
+		_ll_write_char(*(s++));
+}
+
+/*
+ * Set up for decompression
+ */
+static void arch_decomp_setup(void)
+{
+	/* LED off */
+	__raw_writel(INTCONT_LED, INTCONT_START);
+
+	/* Set up SCC */
+	__raw_writeb(42, DUART_START + 8);
+	__raw_writeb(48, DUART_START + 8);
+	__raw_writeb(16, DUART_START + 8);
+	__raw_writeb(0x93, DUART_START);
+	__raw_writeb(0x17, DUART_START);
+	__raw_writeb(0xbb, DUART_START + 4);
+	__raw_writeb(0x78, DUART_START + 16);
+	__raw_writeb(0xa0, DUART_START + 8);
+	__raw_writeb(5, DUART_START + 8);
 }
 
 /*
- * nothing to do
+ * Stroke the watchdog so we don't get reset during decompression.
  */
-#define arch_decomp_setup()
+static inline void arch_decomp_wdog(void)
+{
+	__raw_writel(INTCONT_WATCHDOG, INTCONT_START);
+	__raw_writel(INTCONT_WATCHDOG | 1, INTCONT_START);
+}