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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-04-20 12:08:42 +0200 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-04-20 13:52:19 +0200 |
commit | e0dd8a5ad830798bc8082b03b8c42c32fb9660e0 (patch) | |
tree | d147bfc4d670fcdfbd2e2d2e75eb209f92e07df1 /bsps/m68k/uC5282/btimer/btimer.c | |
parent | bsps: Move startup files to bsps (diff) | |
download | rtems-e0dd8a5ad830798bc8082b03b8c42c32fb9660e0.tar.bz2 |
bsps: Move benchmark timer to bsps
This patch is a part of the BSP source reorganization.
Update #3285.
Diffstat (limited to 'bsps/m68k/uC5282/btimer/btimer.c')
-rw-r--r-- | bsps/m68k/uC5282/btimer/btimer.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/bsps/m68k/uC5282/btimer/btimer.c b/bsps/m68k/uC5282/btimer/btimer.c new file mode 100644 index 0000000000..e01b9c8269 --- /dev/null +++ b/bsps/m68k/uC5282/btimer/btimer.c @@ -0,0 +1,47 @@ +/* + * Timer Init + * + * Use the last DMA timer (DTIM3) as the diagnostic timer. + * + * Author: W. Eric Norum <norume@aps.anl.gov> + * + * COPYRIGHT (c) 2005. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#include <rtems.h> +#include <bsp.h> +#include <rtems/btimer.h> + +void +benchmark_timer_initialize(void) +{ + int preScaleDivisor = bsp_get_CPU_clock_speed() / 1000000; + int div = MCF5282_TIMER_DTMR_CLK_DIV1; + + if (preScaleDivisor > 256) { + preScaleDivisor /= 16; + div = MCF5282_TIMER_DTMR_CLK_DIV16; + } + MCF5282_TIMER3_DTMR = 0; + MCF5282_TIMER3_DTMR = MCF5282_TIMER_DTMR_PS(preScaleDivisor - 1) | div | + MCF5282_TIMER_DTMR_RST; +} + +/* + * Return timer value in microsecond units + */ +uint32_t +benchmark_timer_read(void) +{ + return MCF5282_TIMER3_DTCN; +} + +void +benchmark_timer_disable_subtracting_average_overhead(bool find_flag) +{ +} |