diff options
author | wdenk <wdenk> | 2003-12-06 19:49:23 (GMT) |
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committer | wdenk <wdenk> | 2003-12-06 19:49:23 (GMT) |
commit | a8c7c708a9e0051c6358718c53572a4681eaa22b (patch) | |
tree | b560561c91725eb2f86289da61ee676787419e37 /cpu/mpc5xx/interrupts.c | |
parent | fa1399ed127c8be507bf182dc7d8d61a54938d79 (diff) | |
download | u-boot-a8c7c708a9e0051c6358718c53572a4681eaa22b.tar.xz |
* 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/mpc5xx/interrupts.c')
-rw-r--r-- | cpu/mpc5xx/interrupts.c | 116 |
1 files changed, 4 insertions, 112 deletions
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 @@ struct interrupt_action { 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 @@ void irq_free_handler (int vec) 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 @@ void timer_interrupt (struct pt_regs *regs) __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; } |