summaryrefslogtreecommitdiff
path: root/cpu/mpc86xx/interrupts.c
diff options
context:
space:
mode:
Diffstat (limited to 'cpu/mpc86xx/interrupts.c')
-rw-r--r--cpu/mpc86xx/interrupts.c133
1 files changed, 8 insertions, 125 deletions
diff --git a/cpu/mpc86xx/interrupts.c b/cpu/mpc86xx/interrupts.c
index f16744b..c78fc72 100644
--- a/cpu/mpc86xx/interrupts.c
+++ b/cpu/mpc86xx/interrupts.c
@@ -35,78 +35,23 @@
#include <mpc86xx.h>
#include <command.h>
#include <asm/processor.h>
-#include <ppc_asm.tmpl>
-#include <watchdog.h>
-unsigned long decrementer_count; /* count value for 1e6/HZ microseconds */
-unsigned long timestamp;
-
-
-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)
-{
- if (val)
- asm volatile ("mtdec %0"::"r" (val));
-}
-
-/* interrupt is not supported yet */
int interrupt_init_cpu(unsigned long *decrementer_count)
{
- return 0;
-}
-
-int interrupt_init(void)
-{
- int ret;
-
- volatile immap_t *immr = (immap_t *)CFG_IMMR;
- immr->im_pic.gcr = MPC86xx_PICGCR_RST;
- while (immr->im_pic.gcr & MPC86xx_PICGCR_RST);
- immr->im_pic.gcr = MPC86xx_PICGCR_MODE;
-
- /* call cpu specific function from $(CPU)/interrupts.c */
- ret = interrupt_init_cpu(&decrementer_count);
+ volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+ volatile ccsr_pic_t *pic = &immr->im_pic;
- if (ret)
- return ret;
+ pic->gcr = MPC86xx_PICGCR_RST;
+ while (pic->gcr & MPC86xx_PICGCR_RST)
+ ;
+ pic->gcr = MPC86xx_PICGCR_MODE;
- decrementer_count = get_tbclk() / CFG_HZ;
+ *decrementer_count = get_tbclk() / CONFIG_SYS_HZ;
debug("interrupt init: tbclk() = %d MHz, decrementer_count = %ld\n",
(get_tbclk() / 1000000),
- decrementer_count);
-
- set_dec(decrementer_count);
-
- set_msr(get_msr() | MSR_EE);
-
- debug("MSR = 0x%08lx, Decrementer reg = 0x%08lx\n",
- get_msr(),
- get_dec());
+ *decrementer_count);
#ifdef CONFIG_INTERRUPTS
- volatile ccsr_pic_t *pic = &immr->im_pic;
pic->iivpr1 = 0x810001; /* 50220 enable mcm interrupts */
debug("iivpr1@%x = %x\n", &pic->iivpr1, pic->iivpr1);
@@ -132,25 +77,6 @@ int interrupt_init(void)
return 0;
}
-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;
-}
-
-void increment_timestamp(void)
-{
- timestamp++;
-}
-
/*
* timer_interrupt - gets called when the decrementer overflows,
* with interrupts disabled.
@@ -161,50 +87,9 @@ void timer_interrupt_cpu(struct pt_regs *regs)
/* nothing to do here */
}
-void timer_interrupt(struct pt_regs *regs)
-{
- /* call cpu specific function from $(CPU)/interrupts.c */
- timer_interrupt_cpu(regs);
-
- timestamp++;
-
- /* Restore Decrementer Count */
- set_dec(decrementer_count);
-
-#if defined(CONFIG_WATCHDOG) || defined (CONFIG_HW_WATCHDOG)
- if ((timestamp % (CFG_WATCHDOG_FREQ)) == 0)
- WATCHDOG_RESET();
-#endif /* CONFIG_WATCHDOG || CONFIG_HW_WATCHDOG */
-
-#ifdef CONFIG_STATUS_LED
- status_led_tick(timestamp);
-#endif /* CONFIG_STATUS_LED */
-
-#ifdef CONFIG_SHOW_ACTIVITY
- board_show_activity(timestamp);
-#endif /* CONFIG_SHOW_ACTIVITY */
-
-}
-
-void reset_timer(void)
-{
- timestamp = 0;
-}
-
-ulong get_timer(ulong base)
-{
- return timestamp - base;
-}
-
-void set_timer(ulong t)
-{
- timestamp = t;
-}
-
/*
* Install and free a interrupt handler. Not implemented yet.
*/
-
void irq_install_handler(int vec, interrupt_handler_t *handler, void *arg)
{
}
@@ -218,8 +103,6 @@ void irq_free_handler(int vec)
*/
int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
- printf("\nInterrupt-unsupported:\n");
-
return 0;
}