Fix timer problems on AMCC yucca board.

Set Timer Clock Select to use CPU clock as a timer input source.

CHANGELOG

@@ -2,6 +2,9 @@
 Changes since U-Boot 1.1.4:
 ======================================================================
 
+* Fix timer problems on AMCC yucca board.
+  Set Timer Clock Select to use CPU clock as a timer input source.
+
 * Bring yucca config more in line with other AMCC boards.
 
 * Add AMCC bamboo board to MAKEALL build script.

cpu/ppc4xx/start.S

@@ -158,7 +158,7 @@ _start_440:
 	/*----------------------------------------------------------------+
 	| Core bug fix.  Clear the esr
 	+-----------------------------------------------------------------*/
-        addi	r0,r0,0x0000
+	li	r0,0
         mtspr	esr,r0
 	/*----------------------------------------------------------------*/
 	/* Clear and set up some registers. */
@@ -217,17 +217,15 @@ _start_440:
 	| g. FCOM:   Normal operation
 	| h. MMUPEI: Record even parity. Normal operation.
 	| i. FFF:    Flush only as much data as necessary.
-	| j. TCS:    Timebase increments from externally supplied clock
+	| j. TCS:    Timebase increments from CPU clock.
 	+-----------------------------------------------------------------*/
-	addis	r0, r0, 0x0000
-	ori	r0, r0, 0x0080
+	li	r0,0
 	mtspr	ccr1, r0
 
 	/*----------------------------------------------------------------+
 	| Reset the timebase.
 	| The previous write to CCR1 sets the timebase source.
 	+-----------------------------------------------------------------*/
-	addi	r0, r0, 0x0000
 	mtspr	tbl, r0
 	mtspr	tbu, r0
 #endif

include/configs/yucca.h

@@ -243,7 +243,7 @@
 #define CFG_LOAD_ADDR		0x100000	/* default load address		*/
 #define CFG_EXTBDINFO		1		/* To use extended board_into (bd_t) */
 
-#define CFG_HZ			1		/* decrementer freq: 1 ms ticks */
+#define CFG_HZ			1000		/* decrementer freq: 1 ms ticks */
 
 /*-----------------------------------------------------------------------
  * FLASH related