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MERGE: new system clock implementation

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This commit is contained in:
Daniel Hellstrom
2015-04-14 09:29:48 +02:00
parent cd64fbfb68
commit 045de3556f
1 changed files with 10 additions and 4 deletions
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14
c/src/lib/libbsp/sparc/shared/timer/tlib_ckinit.c
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@@ -11,14 +11,17 @@
*
*/
#include <rtems.h>
#include <stdlib.h>
#include <bsp.h>
#include <tlib.h>
/* Undefine (default) this to save space in standard LEON configurations,
#ifdef RTEMS_DRVMGR_STARTUP
/* Undefine this to save space in standard LEON configurations,
* it will assume that Prescaler is running at 1MHz.
*/
/*#undef CLOCK_DRIVER_DONT_ASSUME_PRESCALER_1MHZ*/
#undef CLOCK_DRIVER_DONT_ASSUME_PRESCALER_1MHZ
/* Set the below defines from bsp.h if function needed.
#undef CLOCK_DRIVER_ISRS_PER_TICK
@@ -206,7 +209,7 @@ rtems_device_driver Clock_initialize(
* Frequency is set in multiples of the timer base frequency.
*
* In standard LEON3 designs the base frequency is is 1MHz, to
* save instructions define CLOCK_DRIVER_ASSUME_PRESCALER_1MHZ
* save instructions undefine CLOCK_DRIVER_DONT_ASSUME_PRESCALER_1MHZ
* to avoid 64-bit calculation.
*/
#ifdef CLOCK_DRIVER_DONT_ASSUME_PRESCALER_1MHZ
@@ -216,7 +219,7 @@ rtems_device_driver Clock_initialize(
tlib_get_freq(Clock_handle, &Clock_basefreq, NULL);
tmp = (uint64_t)Clock_basefreq;
tmp = tmp * (unint64_t)rtems_configuration_get_microseconds_per_tick();
tmp = tmp * (uint64_t)rtems_configuration_get_microseconds_per_tick();
tick_hz = tmp / 1000000;
}
#else
@@ -258,7 +261,10 @@ rtems_device_driver Clock_initialize(
/*** Timer Driver Interface ***/
/* Set system clock timer instance */
void Clock_timer_register(int timer_number)
{
Clock_timer = timer_number;
}
#endif