diff options
Diffstat (limited to 'c/src/lib/libcpu/m68k/mcf5272/clock/ckinit.c')
| -rw-r--r-- | c/src/lib/libcpu/m68k/mcf5272/clock/ckinit.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/c/src/lib/libcpu/m68k/mcf5272/clock/ckinit.c b/c/src/lib/libcpu/m68k/mcf5272/clock/ckinit.c index 0de4c75d97..1fd2853452 100644 --- a/c/src/lib/libcpu/m68k/mcf5272/clock/ckinit.c +++ b/c/src/lib/libcpu/m68k/mcf5272/clock/ckinit.c @@ -1,8 +1,8 @@ /* * Clock Driver for MCF5272 CPU * - * This driver initailizes timer1 on the MCF5272 as the - * main system clock + * This driver initailizes timer1 on the MCF5272 as the + * main system clock * * Copyright 2004 Cogent Computer Systems * Author: Jay Monkman <jtm@lopingdog.com> @@ -40,7 +40,7 @@ volatile uint32_t Clock_driver_ticks; /* * These are set by clock driver during its init */ - + rtems_device_major_number rtems_clock_major = ~0; rtems_device_minor_number rtems_clock_minor; @@ -52,7 +52,7 @@ rtems_isr (*rtems_clock_hook)(rtems_vector_number) = NULL; * * PARAMETERS: * vector - timer interrupt vector number - + * RETURNS: * none */ @@ -91,10 +91,10 @@ Clock_exit(void) icr = icr & ~(MCF5272_ICR1_TMR1_MASK | MCF5272_ICR1_TMR1_PI); icr |= (MCF5272_ICR1_TMR1_IPL(0) | MCF5272_ICR1_TMR1_PI); g_intctrl_regs->icr1 = icr; - + /* reset timer1 */ g_timer_regs->tmr1 = MCF5272_TMR_CLK_STOP; - + /* clear pending */ g_timer_regs->ter1 = MCF5272_TER_REF | MCF5272_TER_CAP; } @@ -117,17 +117,17 @@ Install_clock(rtems_isr_entry clock_isr) uint32_t icr; Clock_driver_ticks = 0; if (rtems_configuration_get_ticks_per_timeslice()) { - + /* Register the interrupt handler */ set_vector(clock_isr, BSP_INTVEC_TMR1, 1); - + /* Reset timer 1 */ g_timer_regs->tmr1 = MCF5272_TMR_RST; g_timer_regs->tmr1 = MCF5272_TMR_CLK_STOP; g_timer_regs->tmr1 = MCF5272_TMR_RST; g_timer_regs->tcn1 = 0; /* reset counter */ g_timer_regs->ter1 = MCF5272_TER_REF | MCF5272_TER_CAP; - + /* Set Timer 1 prescaler so that it counts in microseconds */ g_timer_regs->tmr1 = ( ((((BSP_SYSTEM_FREQUENCY / 1000000) - 1) << MCF5272_TMR_PS_SHIFT) | @@ -137,12 +137,12 @@ Install_clock(rtems_isr_entry clock_isr) MCF5272_TMR_CLK_MSTR | MCF5272_TMR_RST)); - /* Set the timer timeout value from the BSP config */ + /* Set the timer timeout value from the BSP config */ g_timer_regs->trr1 = rtems_configuration_get_microseconds_per_tick() - 1; /* Feed system frequency to the timer */ g_timer_regs->tmr1 |= MCF5272_TMR_CLK_MSTR; - + /* Configure timer1 interrupts */ icr = g_intctrl_regs->icr1; icr = icr & ~(MCF5272_ICR1_TMR1_MASK | MCF5272_ICR1_TMR1_PI); @@ -174,10 +174,10 @@ Clock_initialize(rtems_device_major_number major, void *pargp) { Install_clock (Clock_isr); - + /* Make major/minor avail to others such as shared memory driver */ rtems_clock_major = major; rtems_clock_minor = minor; - + return RTEMS_SUCCESSFUL; } |