*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation,
+ * Foundation,
*/
/*
* File: interrupt.c
- *
+ *
* Discription: Contains interrupt routines needed by U-Boot
*
*/
#include <common.h>
-#include <watchdog.h>
+#include <command.h>
#include <mpc5xx.h>
#include <asm/processor.h>
-/************************************************************************/
-
-unsigned decrementer_count; /* count value for 1e6/HZ microseconds */
-
-/************************************************************************/
+#if defined(CONFIG_PATI)
+/* PATI uses IRQs for PCI doorbell */
+#undef NR_IRQS
+#define NR_IRQS 16
+#endif
struct interrupt_action {
interrupt_handler_t *handler;
void *arg;
+ int count;
};
static struct interrupt_action irq_vecs[NR_IRQS];
/*
- * Local function prototypes
+ * Initialise interrupts
*/
-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)
+int interrupt_init_cpu (ulong *decrementer_count)
{
- 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)
-{
- volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+ int vec;
/* Decrementer used here for status led */
- decrementer_count = get_tbclk () / CFG_HZ;
+ *decrementer_count = get_tbclk () / CONFIG_SYS_HZ;
/* Disable all interrupts */
immr->im_siu_conf.sc_simask = 0;
+ for (vec=0; vec<NR_IRQS; vec++) {
+ irq_vecs[vec].handler = NULL;
+ irq_vecs[vec].arg = NULL;
+ irq_vecs[vec].count = 0;
+ }
- set_dec (decrementer_count);
-
- set_msr (get_msr () | MSR_EE);
return (0);
}
*/
void external_interrupt (struct pt_regs *regs)
{
- volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
int irq;
ulong simask, newmask;
ulong vec, v_bit;
void irq_install_handler (int vec, interrupt_handler_t * handler,
void *arg)
{
- volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
/* SIU interrupt */
if (irq_vecs[vec].handler != NULL) {
printf ("SIU interrupt %d 0x%x\n",
void irq_free_handler (int vec)
{
- volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
/* SIU interrupt */
#if 0
printf ("Free CPM interrupt for vector %d\n",
irq_vecs[vec].arg = NULL;
}
-volatile ulong timestamp = 0;
-
/*
- * Timer interrupt - gets called when bit 0 of DEC changes from
+ * 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;
+ volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
-#ifdef CONFIG_STATUS_LED
- extern void status_led_tick (ulong);
-#endif
#if 0
printf ("*** Timer Interrupt *** ");
#endif
immr->im_clkrstk.cark_plprcrk = KAPWR_KEY;
__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 */
+ return;
}
-/*
- * Reset timer
+#if defined(CONFIG_CMD_IRQ)
+/*******************************************************************************
+ *
+ * irqinfo - print information about IRQs
+ *
*/
-void reset_timer (void)
+int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
- timestamp = 0;
+ int vec;
+
+ printf ("\nInterrupt-Information:\n");
+ printf ("Nr Routine Arg Count\n");
+
+ for (vec=0; vec<NR_IRQS; vec++) {
+ if (irq_vecs[vec].handler != NULL) {
+ printf ("%02d %08lx %08lx %d\n",
+ vec,
+ (ulong)irq_vecs[vec].handler,
+ (ulong)irq_vecs[vec].arg,
+ irq_vecs[vec].count);
+ }
+ }
+ return 0;
}
-/*
- * Get Timer
- */
-ulong get_timer (ulong base)
-{
- return (timestamp - base);
-}
-/*
- * Set timer
- */
-void set_timer (ulong t)
-{
- timestamp = t;
-}
+#endif
projects / people / ms / u-boot.git / blobdiff