* (C) Copyright 2003 Motorola Inc. (MPC85xx port)
* Xianghua Xiao (X.Xiao@motorola.com)
*
- * (C) Copyright 2004 Freescale Semiconductor. (MPC86xx Port)
+ * (C) Copyright 2004, 2007 Freescale Semiconductor. (MPC86xx Port)
* Jeff Brown
* Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
*
#include <mpc86xx.h>
#include <command.h>
#include <asm/processor.h>
-#include <ppc_asm.tmpl>
-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)
+int interrupt_init_cpu(unsigned long *decrementer_count)
{
- if (val)
- asm volatile ("mtdec %0"::"r" (val));
-}
-
-/* interrupt is not supported yet */
-int interrupt_init_cpu (unsigned *decrementer_count)
-{
- return 0;
-}
+ volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+ volatile ccsr_pic_t *pic = &immr->im_pic;
+ pic->gcr = MPC86xx_PICGCR_RST;
+ while (pic->gcr & MPC86xx_PICGCR_RST)
+ ;
+ pic->gcr = MPC86xx_PICGCR_MODE;
-int interrupt_init (void)
-{
- int ret;
+ *decrementer_count = get_tbclk() / CONFIG_SYS_HZ;
+ debug("interrupt init: tbclk() = %d MHz, decrementer_count = %ld\n",
+ (get_tbclk() / 1000000),
+ *decrementer_count);
- /* call cpu specific function from $(CPU)/interrupts.c */
- ret = interrupt_init_cpu (&decrementer_count);
+#ifdef CONFIG_INTERRUPTS
- if (ret)
- return ret;
+ pic->iivpr1 = 0x810001; /* 50220 enable mcm interrupts */
+ debug("iivpr1@%x = %x\n", &pic->iivpr1, pic->iivpr1);
- decrementer_count = get_tbclk()/CFG_HZ;
- debug("interrupt init: tbclk() = %d MHz, decrementer_count = %d\n", (get_tbclk()/1000000), decrementer_count);
+ pic->iivpr2 = 0x810002; /* 50240 enable ddr interrupts */
+ debug("iivpr2@%x = %x\n", &pic->iivpr2, pic->iivpr2);
- set_dec (decrementer_count);
+ pic->iivpr3 = 0x810003; /* 50260 enable lbc interrupts */
+ debug("iivpr3@%x = %x\n", &pic->iivpr3, pic->iivpr3);
- set_msr (get_msr () | MSR_EE);
+#if defined(CONFIG_PCI1) || defined(CONFIG_PCIE1)
+ pic->iivpr8 = 0x810008; /* enable pcie1 interrupts */
+ debug("iivpr8@%x = %x\n", &pic->iivpr8, pic->iivpr8);
+#endif
+#if defined(CONFIG_PCI2) || defined(CONFIG_PCIE2)
+ pic->iivpr9 = 0x810009; /* enable pcie2 interrupts */
+ debug("iivpr9@%x = %x\n", &pic->iivpr9, pic->iivpr9);
+#endif
- debug("MSR = 0x%08lx, Decrementer reg = 0x%08lx\n", get_msr(), get_dec());
+ pic->ctpr = 0; /* 40080 clear current task priority register */
+#endif
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.
* Trivial implementation - no need to be really accurate.
*/
-void
-timer_interrupt_cpu (struct pt_regs *regs)
+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++;
-
- ppcDcbf(×tamp);
-
- /* 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)
+void irq_install_handler(int vec, interrupt_handler_t *handler, void *arg)
{
}
-void
-irq_free_handler(int vec)
+void irq_free_handler(int vec)
{
}
-
/*
* irqinfo - print information about PCI devices,not implemented.
*/
-int
-do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
- printf ("\nInterrupt-unsupported:\n");
-
return 0;
}
/*
* Handle external interrupts
*/
-void
-external_interrupt(struct pt_regs *regs)
+void external_interrupt(struct pt_regs *regs)
{
puts("external_interrupt (oops!)\n");
}
-
-
-
-
-
-