* 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
diff --git a/cpu/mpc5xx/interrupts.c b/cpu/mpc5xx/interrupts.c
index 4618680..3678b5b 100644
--- a/cpu/mpc5xx/interrupts.c
+++ b/cpu/mpc5xx/interrupts.c
@@ -28,16 +28,9 @@
*/
#include <common.h>
-#include <watchdog.h>
#include <mpc5xx.h>
#include <asm/processor.h>
-/************************************************************************/
-
-unsigned decrementer_count; /* count value for 1e6/HZ microseconds */
-
-/************************************************************************/
-
struct interrupt_action {
interrupt_handler_t *handler;
void *arg;
@@ -46,73 +39,19 @@
static struct interrupt_action irq_vecs[NR_IRQS];
/*
- * Local function prototypes
- */
-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));
-}
-
-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));
-}
-
-/*
- * Enable interrupts
- */
-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);
-}
-
-/*
* Initialise interrupts
*/
-int interrupt_init (void)
+int interrupt_init_cpu (ulong *decrementer_count)
{
volatile immap_t *immr = (immap_t *) CFG_IMMR;
/* Decrementer used here for status led */
- decrementer_count = get_tbclk () / CFG_HZ;
+ *decrementer_count = get_tbclk () / CFG_HZ;
/* Disable all interrupts */
immr->im_siu_conf.sc_simask = 0;
- set_dec (decrementer_count);
-
- set_msr (get_msr () | MSR_EE);
return (0);
}
@@ -206,19 +145,14 @@
irq_vecs[vec].arg = NULL;
}
-volatile ulong timestamp = 0;
-
/*
* Timer interrupt - gets called when bit 0 of DEC changes from
* 0. Decrementer is enabled with bit TBE in TBSCR.
*/
-void timer_interrupt (struct pt_regs *regs)
+void timer_interrupt_cpu (struct pt_regs *regs)
{
volatile immap_t *immr = (immap_t *) CFG_IMMR;
-#ifdef CONFIG_STATUS_LED
- extern void status_led_tick (ulong);
-#endif
#if 0
printf ("*** Timer Interrupt *** ");
#endif
@@ -227,47 +161,5 @@
__asm__ ("nop");
immr->im_clkrst.car_plprcr |= PLPRCR_TEXPS | PLPRCR_TMIST;
- /* Restore Decrementer Count */
- set_dec (decrementer_count);
-
- timestamp++;
-
-#ifdef CONFIG_STATUS_LED
- status_led_tick (timestamp);
-#endif /* CONFIG_STATUS_LED */
-
-#if defined(CONFIG_WATCHDOG)
- /*
- * The shortest watchdog period of all boards
- * is approx. 1 sec, thus re-trigger watchdog at least
- * every 500 ms = CFG_HZ / 2
- */
- if ((timestamp % (CFG_HZ / 2)) == 0) {
- reset_5xx_watchdog (immr);
- }
-#endif /* CONFIG_WATCHDOG */
-}
-
-/*
- * Reset timer
- */
-void reset_timer (void)
-{
- timestamp = 0;
-}
-
-/*
- * Get Timer
- */
-ulong get_timer (ulong base)
-{
- return (timestamp - base);
-}
-
-/*
- * Set timer
- */
-void set_timer (ulong t)
-{
- timestamp = t;
+ return;
}