diff options
Diffstat (limited to 'cpu/mpc5xxx')
-rw-r--r-- | cpu/mpc5xxx/interrupts.c | 106 |
1 files changed, 5 insertions, 101 deletions
diff --git a/cpu/mpc5xxx/interrupts.c b/cpu/mpc5xxx/interrupts.c index 5aa4388..7bacecd 100644 --- a/cpu/mpc5xxx/interrupts.c +++ b/cpu/mpc5xxx/interrupts.c @@ -32,79 +32,10 @@ #include <asm/processor.h> #include <command.h> -/****************************************************************************/ - -unsigned decrementer_count; /* count value for 1e6/HZ microseconds */ - -/****************************************************************************/ - -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 (ulong *decrementer_count) { - decrementer_count = get_tbclk() / CFG_HZ; + *decrementer_count = get_tbclk() / CFG_HZ; -#ifdef DEBUG - puts("interrupt_init: setting actual decremter\n"); -#endif - set_dec (get_tbclk() / CFG_HZ); - -#ifdef DEBUG - printf("interrupt_init: enabling interrupts (msr = %08lx)\n", - get_msr()); -#endif - set_msr (get_msr() | MSR_EE); - -#ifdef DEBUG - printf("interrupt_init: done. (msr = %08lx)\n", get_msr()); -#endif return (0); } @@ -119,38 +50,11 @@ external_interrupt(struct pt_regs *regs) puts("external_interrupt (oops!)\n"); } -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) -{ - set_dec(decrementer_count); - timestamp++; -} - -/****************************************************************************/ - -void -reset_timer(void) -{ - timestamp = 0; -} - -ulong -get_timer(ulong base) -{ - return (timestamp - base); -} - void -set_timer(ulong t) +timer_interrupt_cpu (struct pt_regs *regs) { - timestamp = t; + /* nothing to do here */ + return; } /****************************************************************************/ |