From 95963fd1ed6c9bdb1114acd6ecffa8e225bbe416 Mon Sep 17 00:00:00 2001
From: Greg Ungerer <gerg@snapgear.com>
Date: Mon, 10 Mar 2003 17:49:08 -0800
Subject: [PATCH] [PATCH] move common timer and vector code for
 m68knommu/ColdFire/5206

This patch moves common ColdFire vector and timer procesing code from
the local per-processor config.c for the 5206 ColdFire sub-architecture.
All ColdFire CPU's have the same timer and basic vector setup, seems
crazy to repeat this code for each of 6 ColdFire CPU varients.
---
 arch/m68knommu/platform/5206/config.c | 113 ++++++--------------------
 1 file changed, 26 insertions(+), 87 deletions(-)

diff --git a/arch/m68knommu/platform/5206/config.c b/arch/m68knommu/platform/5206/config.c
index bf0b08e3e3041..33bdfd095280f 100644
--- a/arch/m68knommu/platform/5206/config.c
+++ b/arch/m68knommu/platform/5206/config.c
@@ -25,6 +25,14 @@
 
 /***************************************************************************/
 
+void coldfire_tick(void);
+void coldfire_timer_init(void (*handler)(int, void *, struct pt_regs *));
+unsigned long coldfire_timer_offset(void);
+void coldfire_trap_init(void);
+void coldfire_reset(void);
+
+/***************************************************************************/
+
 /*
  *	DMA channel base address table.
  */
@@ -33,47 +41,8 @@ unsigned int   dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
         MCF_MBAR + MCFDMA_BASE1,
 };
 
-unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
-
-/***************************************************************************/
-
-void coldfire_tick(void)
-{
-	volatile unsigned char	*timerp;
-
-	/* Reset the ColdFire timer */
-	timerp = (volatile unsigned char *) (MCF_MBAR + MCFTIMER_BASE1);
-	timerp[MCFTIMER_TER] = MCFTIMER_TER_CAP | MCFTIMER_TER_REF;
-}
-
-/***************************************************************************/
-
-void coldfire_timer_init(void (*handler)(int, void *, struct pt_regs *))
-{
-	volatile unsigned short	*timerp;
-	volatile unsigned char	*icrp;
-
-	/* Set up TIMER 1 as poll clock */
-	timerp = (volatile unsigned short *) (MCF_MBAR + MCFTIMER_BASE1);
-	timerp[MCFTIMER_TMR] = MCFTIMER_TMR_DISABLE;
-
-	timerp[MCFTIMER_TRR] = (unsigned short) ((MCF_CLK / 16) / HZ);
-	timerp[MCFTIMER_TMR] = MCFTIMER_TMR_ENORI | MCFTIMER_TMR_CLK16 |
-		MCFTIMER_TMR_RESTART | MCFTIMER_TMR_ENABLE;
-
-	icrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_TIMER1ICR);
-
-	*icrp = MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL5 | MCFSIM_ICR_PRI3;
-	request_irq(29, handler, SA_INTERRUPT, "ColdFire Timer", NULL);
-	mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_TIMER1);
-}
-
 /***************************************************************************/
 
-/*
- *	Program the vector to be an auto-vectored.
- */
-
 void mcf_autovector(unsigned int vec)
 {
 	volatile unsigned char  *mbar;
@@ -91,65 +60,35 @@ void mcf_autovector(unsigned int vec)
 
 /***************************************************************************/
 
-extern e_vector	*_ramvec;
-
-void set_evector(int vecnum, void (*handler)(void))
+void mcf_settimericr(unsigned int timer, unsigned int level)
 {
-	if (vecnum >= 0 && vecnum <= 255)
-		_ramvec[vecnum] = handler;
-}
-
-/***************************************************************************/
-
-/* assembler routines */
-asmlinkage void buserr(void);
-asmlinkage void trap(void);
-asmlinkage void system_call(void);
-asmlinkage void inthandler(void);
-
-void coldfire_trap_init(void)
-{
-	int i;
-
-#ifndef ENABLE_dBUG
-	mcf_setimr(MCFSIM_IMR_MASKALL);
-#endif
-
-	/*
-	 *	There is a common trap handler and common interrupt
-	 *	handler that handle almost every vector. We treat
-	 *	the system call and bus error special, they get their
-	 *	own first level handlers.
-	 */
-#ifndef ENABLE_dBUG
-	for (i = 3; (i <= 23); i++)
-		_ramvec[i] = trap;
-	for (i = 33; (i <= 63); i++)
-		_ramvec[i] = trap;
-#endif
-
-	for (i = 24; (i <= 30); i++)
-		_ramvec[i] = inthandler;
-#ifndef ENABLE_dBUG
-	_ramvec[31] = inthandler;  // Disables the IRQ7 button
-#endif
-
-	for (i = 64; (i < 255); i++)
-		_ramvec[i] = inthandler;
-	_ramvec[255] = 0;
-
-	_ramvec[2] = buserr;
-	_ramvec[32] = system_call;
+	volatile unsigned char *icrp;
+	unsigned int icr, imr;
+
+	if (timer <= 2) {
+		switch (timer) {
+		case 2:  icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
+		default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
+		}
+
+		icrp = (volatile unsigned char *) (MCF_MBAR + icr);
+		*icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
+		mcf_setimr(mcf_getimr() & ~imr);
+	}
 }
 
 /***************************************************************************/
 
 void config_BSP(char *commandp, int size)
 {
+	mcf_setimr(MCFSIM_IMR_MASKALL);
 	memset(commandp, 0, size);
+
 	mach_sched_init = coldfire_timer_init;
 	mach_tick = coldfire_tick;
+	mach_gettimeoffset = coldfire_timer_offset;
 	mach_trap_init = coldfire_trap_init;
+	mach_reset = coldfire_reset;
 }
 
 /***************************************************************************/
-- 
2.53.0