Add coloured led interface for ARM boards.

Use it in cpu/arm920t/start.S to indicate U-Boot code has been entered.

cpu/arm920t/start.S

@@ -27,9 +27,7 @@
 
 #include <config.h>
 #include <version.h>
-#if	defined(CONFIG_AT91RM9200DK) || defined(CONFIG_AT91RM9200EK) || defined(CONFIG_AT91RM9200DF)
-#include	<led.h>
-#endif
+#include <asm/led.h>
 
 /*
  *************************************************************************
@@ -117,13 +115,13 @@ reset:
 	bic	r0,r0,#0x1f
 	orr	r0,r0,#0xd3
 	msr	cpsr,r0
-
-#if	CONFIG_AT91RM9200
-#if	defined(CONFIG_AT91RM9200DK) || defined(CONFIG_AT91RM9200EK) || defined(CONFIG_AT91RM9200DF)
-	bl LED_init
+	/* 
+	 * if board has a red led use it to show U-Boot is running
+	 */
+	bl coloured_LED_init
 	bl red_LED_on
-#endif
 
+#ifdef CONFIG_AT91RM9200
 #ifdef CONFIG_BOOTBINFUNC
 /* code based on entry.S from ATMEL */
 #define AT91C_BASE_CKGR 0xFFFFFC20

include/asm-arm/led.h

@@ -26,7 +26,7 @@
 #define __LED_H
 
 #ifndef	__ASSEMBLY__
-extern void	LED_init (void);
+extern void	coloured_LED_init (void);
 extern void	red_LED_on(void);
 extern void	red_LED_off(void);
 extern void	green_LED_on(void);

lib_arm/board.c

@@ -112,6 +112,30 @@ void *sbrk (ptrdiff_t increment)
 }
 
 /************************************************************************
+ * Coloured LED functionality
+ ************************************************************************
+ * May be supplied by boards if desired
+ */
+void inline __coloured_LED_init (void) {}
+void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init"))); 
+void inline __red_LED_on (void) {}
+void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
+void inline __red_LED_off(void) {}
+void inline red_LED_off(void)	     __attribute__((weak, alias("__red_LED_off"))); 
+void inline __green_LED_on(void) {}
+void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on"))); 
+void inline __green_LED_off(void) {}
+void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off"))); 
+void inline __yellow_LED_on(void) {}
+void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on"))); 
+void inline __yellow_LED_off(void) {}
+void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off"))); 
+
+
+
+
+
+/************************************************************************
  * Init Utilities							*
  ************************************************************************
  * Some of this code should be moved into the core functions,