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authorwdenk <wdenk>2003-12-06 19:49:23 +0000
committerwdenk <wdenk>2003-12-06 19:49:23 +0000
commita8c7c708a9e0051c6358718c53572a4681eaa22b (patch)
treeb560561c91725eb2f86289da61ee676787419e37 /cpu/mpc8260/interrupts.c
parentfa1399ed127c8be507bf182dc7d8d61a54938d79 (diff)
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* 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
Diffstat (limited to 'cpu/mpc8260/interrupts.c')
-rw-r--r--cpu/mpc8260/interrupts.c131
1 files changed, 6 insertions, 125 deletions
diff --git a/cpu/mpc8260/interrupts.c b/cpu/mpc8260/interrupts.c
index 3c5ef74..e2a6c97 100644
--- a/cpu/mpc8260/interrupts.c
+++ b/cpu/mpc8260/interrupts.c
@@ -24,19 +24,13 @@
*/
#include <common.h>
-#include <watchdog.h>
#include <command.h>
#include <mpc8260.h>
#include <mpc8260_irq.h>
#include <asm/processor.h>
-#ifdef CONFIG_STATUS_LED
-#include <status_led.h>
-#endif
/****************************************************************************/
-unsigned decrementer_count; /* count val for 1e6/HZ microseconds */
-
struct irq_action {
interrupt_handler_t *handler;
void *arg;
@@ -144,57 +138,13 @@ static int m8260_get_irq (struct pt_regs *regs)
/* end of code ripped out of arch/ppc/kernel/ppc8260_pic.c */
/****************************************************************************/
-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;sync;isync"::"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));
-}
-
-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;
volatile immap_t *immr = (immap_t *) CFG_IMMR;
- decrementer_count = (gd->bus_clk / 4) / CFG_HZ;
+ *decrementer_count = (gd->bus_clk / 4) / CFG_HZ;
/* Initialize the default interrupt mapping priorities */
immr->im_intctl.ic_sicr = 0;
@@ -216,10 +166,6 @@ int interrupt_init (void)
immr->im_intctl.ic_siexr = -1;
#endif
- set_dec (decrementer_count);
-
- set_msr (get_msr () | MSR_EE);
-
return (0);
}
@@ -236,7 +182,7 @@ void external_interrupt (struct pt_regs *regs)
m8260_mask_and_ack (irq);
- set_msr (get_msr () | MSR_EE);
+ enable_interrupts ();
if (irq_handlers[irq].handler != NULL)
(*irq_handlers[irq].handler) (irq_handlers[irq].arg);
@@ -292,75 +238,10 @@ void irq_free_handler (int irq)
/****************************************************************************/
-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 defined(CONFIG_WATCHDOG) || defined(CFG_HYMOD_DBLEDS)
- volatile immap_t *immr = (immap_t *) CFG_IMMR;
-#endif /* CONFIG_WATCHDOG */
-
- /* Restore Decrementer Count */
- set_dec (decrementer_count);
-
- timestamp++;
-
-#if defined(CONFIG_WATCHDOG) || \
- defined(CFG_CMA_LCD_HEARTBEAT) || \
- defined(CFG_HYMOD_DBLEDS)
-
- if ((timestamp % CFG_HZ) == 0) {
-#if defined(CFG_CMA_LCD_HEARTBEAT)
- extern void lcd_heartbeat (void);
-#endif /* CFG_CMA_LCD_HEARTBEAT */
-#if defined(CFG_HYMOD_DBLEDS)
- volatile iop8260_t *iop = &immr->im_ioport;
- static int shift = 0;
-#endif /* CFG_HYMOD_DBLEDS */
-
-#if defined(CFG_CMA_LCD_HEARTBEAT)
- lcd_heartbeat ();
-#endif /* CFG_CMA_LCD_HEARTBEAT */
-
-#if defined(CONFIG_WATCHDOG)
- reset_8260_watchdog (immr);
-#endif /* CONFIG_WATCHDOG */
-
-#if defined(CFG_HYMOD_DBLEDS)
- /* hymod daughter board LEDs */
- if (++shift > 3)
- shift = 0;
- iop->iop_pdatd =
- (iop->iop_pdatd & ~0x0f000000) | (1 << (24 + shift));
-#endif /* CFG_HYMOD_DBLEDS */
- }
-#endif /* CONFIG_WATCHDOG || CFG_CMA_LCD_HEARTBEAT */
-
-#ifdef CONFIG_STATUS_LED
- status_led_tick (timestamp);
-#endif /* CONFIG_STATUS_LED */
-}
-
-/****************************************************************************/
-
-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;
}
/****************************************************************************/