forked from Imagelibrary/rtems
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/*
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* COPYRIGHT (c) 1989-2013.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <bsp.h>
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#include <bsp/irq.h>
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#include <bspopts.h>
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/* XXX convert to macros? Move to score/cpu? */
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void mips_set_timer(uint32_t timer_clock_interval);
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uint32_t mips_get_timer(void);
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/* XXX move to BSP.h or irq.h?? */
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#define EXT_INT5 0x8000 /* external interrupt 5 */
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#define CLOCK_VECTOR_MASK EXT_INT5
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#define CLOCK_VECTOR (MIPS_INTERRUPT_BASE+0x7)
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extern uint32_t bsp_clicks_per_microsecond;
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static uint32_t mips_timer_rate = 0;
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/* refresh the internal CPU timer */
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#define Clock_driver_support_at_tick() \
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mips_set_timer( mips_timer_rate );
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#define Clock_driver_support_install_isr( _new ) \
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rtems_interrupt_handler_install(CLOCK_VECTOR, "PIT clock",0, _new, NULL)
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#define Clock_driver_support_initialize_hardware() \
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do { \
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mips_timer_rate = rtems_configuration_get_microseconds_per_tick() * \
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bsp_clicks_per_microsecond; \
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mips_set_timer( mips_timer_rate ); \
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mips_enable_in_interrupt_mask(CLOCK_VECTOR_MASK); \
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} while(0)
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#define Clock_driver_support_shutdown_hardware() \
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do { \
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mips_disable_in_interrupt_mask(CLOCK_VECTOR_MASK); \
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} while (0)
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#define CLOCK_DRIVER_USE_DUMMY_TIMECOUNTER
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#include "../../../shared/dev/clock/clockimpl.h"
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