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* Patch by Mathias Küster, 23 Nov 2004:
add udelay support for the mcf5282 cpu

* Patch by Tolunay Orkun, 16 November 2004:
fix incorrect onboard Xilinx CPLD base address

wdenk 20 years ago
parent
commit
50712ba16e
3 changed files with 29 additions and 1 deletions
  1. 6 0
      CHANGELOG
  2. 1 1
      board/csb472/init.S
  3. 22 0
      lib_m68k/time.c

+ 6 - 0
CHANGELOG

@@ -2,6 +2,12 @@
 Changes for U-Boot 1.1.3:
 ======================================================================
 
+* Patch by Mathias Küster, 23 Nov 2004:
+  add udelay support for the mcf5282 cpu
+
+* Patch by Tolunay Orkun, 16 November 2004:
+  fix incorrect onboard Xilinx CPLD base address
+  
 * Patch by Jerry Van Baren, 08 Nov 2004:
   - Add low-boot option for MPC8260ADS board (if lowboot is selected,
     the jumper for the HRCW source should select flash. If lowboot is

+ 1 - 1
board/csb472/init.S

@@ -129,7 +129,7 @@ ext_bus_cntlr_init:
 	 *******************************************************************/
 	/*WDCR_EBC(pb3ap, 0x07869200)*/
 	WDCR_EBC(pb3ap, 0x04055200)
-	WDCR_EBC(pb3cr, 0xff01c000)
+	WDCR_EBC(pb3cr, 0xf081c000)
 	/********************************************************************
 	 * Memory Bank 1,2,4-7 (Unused) initialization
 	 *******************************************************************/

+ 22 - 0
lib_m68k/time.c

@@ -131,6 +131,28 @@ void set_timer (ulong t)
 
 void udelay(unsigned long usec)
 {
+	volatile unsigned short *timerp;
+	uint tmp;
+
+	timerp = (volatile unsigned short *) (CFG_MBAR + MCFTIMER_BASE3);
+	
+	while (usec > 0) {
+		if (usec > 65000)
+			tmp = 65000;
+		else
+			tmp = usec;
+		usec = usec - tmp;
+
+		/* Set up TIMER 3 as timebase clock */
+		timerp[MCFTIMER_PCSR] = MCFTIMER_PCSR_OVW;
+		timerp[MCFTIMER_PMR] = 0;
+		/* set period to 1 us */
+		timerp[MCFTIMER_PCSR] =
+			(5 << 8) | MCFTIMER_PCSR_EN | MCFTIMER_PCSR_OVW;
+
+                timerp[MCFTIMER_PMR] = tmp;
+		while (timerp[MCFTIMER_PCNTR] > 0);
+	}
 }
 
 void timer_init (void)