diff options
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libcpu/sh/sh7045/clock/ckinit.c | 93 |
1 files changed, 41 insertions, 52 deletions
diff --git a/c/src/lib/libcpu/sh/sh7045/clock/ckinit.c b/c/src/lib/libcpu/sh/sh7045/clock/ckinit.c index 031ae3225e..9e9278c24c 100644 --- a/c/src/lib/libcpu/sh/sh7045/clock/ckinit.c +++ b/c/src/lib/libcpu/sh/sh7045/clock/ckinit.c @@ -161,61 +161,52 @@ void Install_clock( Clock_MHZ = rtems_cpu_configuration_get_clicks_per_second() / 1000000 ; + rtems_interrupt_catch( Clock_isr, CLOCK_VECTOR, &Old_ticker ); + /* - * If ticks_per_timeslice is configured as non-zero, then the user - * wants a clock tick. + * Hardware specific initialize goes here */ - - if ( rtems_configuration_get_ticks_per_timeslice() ) { - rtems_interrupt_catch( Clock_isr, CLOCK_VECTOR, &Old_ticker ); - /* - * Hardware specific initialize goes here - */ - /* stop Timer 0 */ - temp8 = read8( MTU_TSTR) & MTU0_STARTMASK; - write8( temp8, MTU_TSTR); + /* stop Timer 0 */ + temp8 = read8( MTU_TSTR) & MTU0_STARTMASK; + write8( temp8, MTU_TSTR); - /* set initial counter value to 0 */ - write16( 0, MTU_TCNT0); + /* set initial counter value to 0 */ + write16( 0, MTU_TCNT0); - /* Timer 0 runs independent */ - temp8 = read8( MTU_TSYR) & MTU0_SYNCMASK; - write8( temp8, MTU_TSYR); + /* Timer 0 runs independent */ + temp8 = read8( MTU_TSYR) & MTU0_SYNCMASK; + write8( temp8, MTU_TSYR); - /* Timer 0 normal mode */ - temp8 = read8( MTU_TMDR0) & MTU0_MODEMASK; - write8( temp8, MTU_TMDR0); + /* Timer 0 normal mode */ + temp8 = read8( MTU_TMDR0) & MTU0_MODEMASK; + write8( temp8, MTU_TMDR0); - /* TCNT is cleared by GRA ; internal clock /4 */ - write8( MTU0_TCRMASK , MTU_TCR0); + /* TCNT is cleared by GRA ; internal clock /4 */ + write8( MTU0_TCRMASK , MTU_TCR0); - /* use GRA without I/O - pins */ - write8( MTU0_TIORVAL, MTU_TIORL0); + /* use GRA without I/O - pins */ + write8( MTU0_TIORVAL, MTU_TIORL0); - /* reset flags of the status register */ - temp8 = read8( MTU_TSR0) & MTU0_STAT_MASK; - write8( temp8, MTU_TSR0); + /* reset flags of the status register */ + temp8 = read8( MTU_TSR0) & MTU0_STAT_MASK; + write8( temp8, MTU_TSR0); - /* Irq if is equal GRA */ - temp8 = read8( MTU_TIER0) | MTU0_TIERMASK; - write8( temp8, MTU_TIER0); + /* Irq if is equal GRA */ + temp8 = read8( MTU_TIER0) | MTU0_TIERMASK; + write8( temp8, MTU_TIER0); - /* set interrupt priority */ - if( sh_set_irq_priority( CLOCK_VECTOR, CLOCKPRIO ) != RTEMS_SUCCESSFUL) - rtems_fatal_error_occurred( RTEMS_NOT_CONFIGURED); + /* set interrupt priority */ + if( sh_set_irq_priority( CLOCK_VECTOR, CLOCKPRIO ) != RTEMS_SUCCESSFUL) + rtems_fatal_error_occurred( RTEMS_NOT_CONFIGURED); - /* set counter limits */ - write16( _MTU_COUNTER0_MICROSECOND * - rtems_configuration_get_microseconds_per_tick(), - - MTU_GR0A); + /* set counter limits */ + write16( _MTU_COUNTER0_MICROSECOND * + rtems_configuration_get_microseconds_per_tick(), MTU_GR0A); - /* start counter */ - temp8 = read8( MTU_TSTR) |~MTU0_STARTMASK; - write8( temp8, MTU_TSTR); - - } + /* start counter */ + temp8 = read8( MTU_TSTR) |~MTU0_STARTMASK; + write8( temp8, MTU_TSTR); /* * Schedule the clock cleanup routine to execute if the application exits. @@ -231,24 +222,22 @@ void Install_clock( void Clock_exit( void ) { unsigned8 temp8 = 0; - if ( rtems_configuration_get_ticks_per_timeslice() ) { - /* turn off the timer interrupts */ - /* set interrupt priority to 0 */ - if( sh_set_irq_priority( CLOCK_VECTOR, 0 ) != RTEMS_SUCCESSFUL) - rtems_fatal_error_occurred( RTEMS_UNSATISFIED); + /* turn off the timer interrupts */ + /* set interrupt priority to 0 */ + if( sh_set_irq_priority( CLOCK_VECTOR, 0 ) != RTEMS_SUCCESSFUL) + rtems_fatal_error_occurred( RTEMS_UNSATISFIED); /* * temp16 = read16( MTU_TIER0) & IPRC_MTU0_IRQMASK; * write16( temp16, MTU_TIER0); */ - /* stop counter */ - temp8 = read8( MTU_TSTR) & MTU0_STARTMASK; - write8( temp8, MTU_TSTR); + /* stop counter */ + temp8 = read8( MTU_TSTR) & MTU0_STARTMASK; + write8( temp8, MTU_TSTR); - /* old vector shall not be installed */ - } + /* old vector shall not be installed */ } /* |