From a8c7c708a9e0051c6358718c53572a4681eaa22b Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Sat, 6 Dec 2003 19:49:23 +0000
Subject: * Patch by Gleb Natapov, 19 Sep 2003:   Move most of the timer
 interrupt related PPC code to ppc_lib/interrupts.c

* Patch by Anders Larsen, 17 Sep 2003:
  Bring ARM memory layout in sync with the documentation:
  stack and malloc-heap are now located _below_ the U-Boot code
---
 cpu/ppc4xx/405gp_enet.c |  2 +-
 cpu/ppc4xx/interrupts.c | 95 ++++---------------------------------------------
 2 files changed, 8 insertions(+), 89 deletions(-)

(limited to 'cpu/ppc4xx')

diff --git a/cpu/ppc4xx/405gp_enet.c b/cpu/ppc4xx/405gp_enet.c
index c222c719e8..a9c7cfe050 100644
--- a/cpu/ppc4xx/405gp_enet.c
+++ b/cpu/ppc4xx/405gp_enet.c
@@ -159,7 +159,7 @@ static int tx_i_index = 0;		/* Transmit Interrupt Queue Index */
 static int tx_u_index = 0;		/* Transmit User Queue Index */
 static int tx_run[NUM_TX_BUFF];	/* Transmit Running Queue */
 
-#undef INFO_405_ENET 1
+#undef INFO_405_ENET
 #ifdef INFO_405_ENET
 static int packetSent = 0;
 static int packetReceived = 0;
diff --git a/cpu/ppc4xx/interrupts.c b/cpu/ppc4xx/interrupts.c
index b6a956c152..1a9ae9d7d1 100644
--- a/cpu/ppc4xx/interrupts.c
+++ b/cpu/ppc4xx/interrupts.c
@@ -35,10 +35,6 @@
 
 /****************************************************************************/
 
-unsigned decrementer_count;		/* count value for 1e6/HZ microseconds */
-
-/****************************************************************************/
-
 /*
  * CPM interrupt vector functions.
  */
@@ -57,20 +53,6 @@ void uic1_interrupt( void * parms); /* UIC1 handler */
 #endif
 
 /****************************************************************************/
-
-static __inline__ unsigned long get_msr(void)
-{
-	unsigned long msr;
-
-	asm volatile("mfmsr %0" : "=r" (msr) :);
-	return msr;
-}
-
-static __inline__ void set_msr(unsigned long msr)
-{
-	asm volatile("mtmsr %0" : : "r" (msr));
-}
-
 #if defined(CONFIG_440)
 
 /* SPRN changed in 440 */
@@ -81,21 +63,6 @@ static __inline__ void set_evpr(unsigned long val)
 
 #else /* !defined(CONFIG_440) */
 
-static __inline__ unsigned long get_dec(void)
-{
-	unsigned long val;
-
-	asm volatile("mfdec %0" : "=r" (val) :);
-	return val;
-}
-
-
-static __inline__ void set_dec(unsigned long val)
-{
-	asm volatile("mtdec %0" : : "r" (val));
-}
-
-
 static __inline__ void set_pit(unsigned long val)
 {
 	asm volatile("mtpit %0" : : "r" (val));
@@ -114,29 +81,18 @@ static __inline__ void set_evpr(unsigned long val)
 }
 #endif /* defined(CONFIG_440 */
 
-
-void enable_interrupts (void)
-{
-	set_msr (get_msr() | MSR_EE);
-}
-
-/* returns flag if MSR_EE was set before */
-int disable_interrupts (void)
-{
-	ulong msr = get_msr();
-	set_msr (msr & ~MSR_EE);
-	return ((msr & MSR_EE) != 0);
-}
-
 /****************************************************************************/
 
-int interrupt_init(void)
+int interrupt_init_cpu (unsigned *decrementer_count)
 {
 	DECLARE_GLOBAL_DATA_PTR;
 
 	int vec;
 	unsigned long val;
 
+	/* decrementer is automatically reloaded */
+	*decrementer_count = 0;
+	
 	/*
 	 * Mark all irqs as free
 	 */
@@ -194,10 +150,6 @@ int interrupt_init(void)
 	irq_install_handler(VECNUM_UIC1NC, uic1_interrupt, 0);
 	irq_install_handler(VECNUM_UIC1C, uic1_interrupt, 0);
 #endif
-	/*
-	 * Enable external interrupts (including PIT)
-	 */
-	set_msr (get_msr() | MSR_EE);
 
 	return (0);
 }
@@ -362,47 +314,14 @@ irq_free_handler(int vec)
 
 /****************************************************************************/
 
-
-volatile ulong timestamp = 0;
-
-/*
- * timer_interrupt - gets called when the decrementer overflows,
- * with interrupts disabled.
- * Trivial implementation - no need to be really accurate.
- */
-void timer_interrupt(struct pt_regs *regs)
-{
-#if 0
-	printf ("*** Timer Interrupt *** ");
-#endif
-	timestamp++;
-
-#if defined(CONFIG_WATCHDOG)
-	if ((timestamp % 1000) == 0)
-		reset_4xx_watchdog();
-#endif /* CONFIG_WATCHDOG */
-}
-
-/****************************************************************************/
-
-void reset_timer (void)
-{
-	timestamp = 0;
-}
-
-ulong get_timer (ulong base)
-{
-	return (timestamp - base);
-}
-
-void set_timer (ulong t)
+void timer_interrupt_cpu (struct pt_regs *regs)
 {
-	timestamp = t;
+	/* nothing to do here */
+	return;
 }
 
 /****************************************************************************/
 
-
 #if (CONFIG_COMMANDS & CFG_CMD_IRQ)
 
 /*******************************************************************************
-- 
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