diff options
author | wdenk <wdenk> | 2003-12-06 19:49:23 +0000 |
---|---|---|
committer | wdenk <wdenk> | 2003-12-06 19:49:23 +0000 |
commit | a8c7c708a9e0051c6358718c53572a4681eaa22b (patch) | |
tree | b560561c91725eb2f86289da61ee676787419e37 /cpu/mpc8xx/interrupts.c | |
parent | fa1399ed127c8be507bf182dc7d8d61a54938d79 (diff) |
* 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/mpc8xx/interrupts.c')
-rw-r--r-- | cpu/mpc8xx/interrupts.c | 117 |
1 files changed, 3 insertions, 114 deletions
diff --git a/cpu/mpc8xx/interrupts.c b/cpu/mpc8xx/interrupts.c index 8bc0a1afde..558dc09c07 100644 --- a/cpu/mpc8xx/interrupts.c +++ b/cpu/mpc8xx/interrupts.c @@ -22,7 +22,6 @@ */ #include <common.h> -#include <watchdog.h> #include <mpc8xx.h> #include <mpc8xx_irq.h> #include <asm/processor.h> @@ -30,10 +29,6 @@ /************************************************************************/ -unsigned decrementer_count; /* count value for 1e6/HZ microseconds */ - -/************************************************************************/ - /* * CPM interrupt vector functions. */ @@ -50,57 +45,11 @@ static void cpm_interrupt (void *regs); /************************************************************************/ -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)); -} - - -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) { volatile immap_t *immr = (immap_t *) CFG_IMMR; - decrementer_count = get_tbclk () / CFG_HZ; + *decrementer_count = get_tbclk () / CFG_HZ; /* disable all interrupts */ immr->im_siu_conf.sc_simask = 0; @@ -108,10 +57,6 @@ int interrupt_init (void) /* Configure CPM interrupts */ cpm_interrupt_init (); - set_dec (decrementer_count); - - set_msr (get_msr () | MSR_EE); - return (0); } @@ -314,20 +259,15 @@ static void cpm_interrupt_init (void) /************************************************************************/ -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) +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 @@ -339,57 +279,6 @@ void timer_interrupt (struct pt_regs *regs) #else immr->im_clkrst.car_plprcr |= PLPRCR_TEXPS | PLPRCR_TMIST; #endif - /* Restore Decrementer Count */ - set_dec (decrementer_count); - - timestamp++; - -#ifdef CONFIG_STATUS_LED - status_led_tick (timestamp); -#endif /* CONFIG_STATUS_LED */ - -#if defined(CONFIG_WATCHDOG) || defined(CFG_CMA_LCD_HEARTBEAT) - - /* - * The shortest watchdog period of all boards (except LWMON) - * is approx. 1 sec, thus re-trigger watchdog at least - * every 500 ms = CFG_HZ / 2 - */ -#ifndef CONFIG_LWMON - if ((timestamp % (CFG_HZ / 2)) == 0) { -#else - if ((timestamp % (CFG_HZ / 20)) == 0) { -#endif - -#if defined(CFG_CMA_LCD_HEARTBEAT) - extern void lcd_heartbeat (void); - - lcd_heartbeat (); -#endif /* CFG_CMA_LCD_HEARTBEAT */ - -#if defined(CONFIG_WATCHDOG) - reset_8xx_watchdog (immr); -#endif /* CONFIG_WATCHDOG */ - - } -#endif /* CONFIG_WATCHDOG || CFG_CMA_LCD_HEARTBEAT */ -} - -/************************************************************************/ - -void reset_timer (void) -{ - timestamp = 0; -} - -ulong get_timer (ulong base) -{ - return (timestamp - base); -} - -void set_timer (ulong t) -{ - timestamp = t; } /************************************************************************/ |