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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-04-20 12:08:42 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-04-20 13:52:19 +0200 |
| commit | e0dd8a5ad830798bc8082b03b8c42c32fb9660e0 (patch) | |
| tree | d147bfc4d670fcdfbd2e2d2e75eb209f92e07df1 /bsps/m68k/genmcf548x | |
| 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/genmcf548x')
| -rw-r--r-- | bsps/m68k/genmcf548x/btimer/btimer.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/bsps/m68k/genmcf548x/btimer/btimer.c b/bsps/m68k/genmcf548x/btimer/btimer.c new file mode 100644 index 0000000000..acac6f8f9b --- /dev/null +++ b/bsps/m68k/genmcf548x/btimer/btimer.c @@ -0,0 +1,83 @@ +/*===============================================================*\ +| Project: RTEMS generic mcf548x BSP | ++-----------------------------------------------------------------+ +| File: timer.c | ++-----------------------------------------------------------------+ +| The file contains the diagnostic timer code of generic MCF548x | +| BSP. | ++-----------------------------------------------------------------+ +| Copyright (c) 2007 | +| Embedded Brains GmbH | +| Obere Lagerstr. 30 | +| D-82178 Puchheim | +| Germany | +| rtems@embedded-brains.de | ++-----------------------------------------------------------------+ +| | +| Parts of the code has been derived from the "dBUG source code" | +| package Freescale is providing for M548X EVBs. The usage of | +| the modified or unmodified code and it's integration into the | +| generic mcf548x BSP has been done according to the Freescale | +| license terms. | +| | +| The Freescale license terms can be reviewed in the file | +| | +| Freescale_license.txt | +| | ++-----------------------------------------------------------------+ +| | +| The generic mcf548x BSP has been developed on the basic | +| structures and modules of the av5282 BSP. | +| | ++-----------------------------------------------------------------+ +| | +| 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. | +| | ++-----------------------------------------------------------------+ +| | +| date history ID | +| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | +| 12.11.07 1.0 ras | +| | +\*===============================================================*/ + +/* + * Timer Init + * + * Use the second slice timer (SLT1) as the diagnostic timer. + */ + +#include <rtems.h> +#include <rtems/btimer.h> +#include <bsp.h> +#include <mcf548x/mcf548x.h> + +bool benchmark_timer_find_average_overhead; +static uint32_t microsecond_timer_value = 0; + +void benchmark_timer_initialize(void) +{ + MCF548X_SLT_SLTCNT1 = 0xFFFFFFFF; + MCF548X_SLT_SCR1 |= (MCF548X_SLT_SCR_TEN | MCF548X_SLT_SCR_RUN); +} + +/* + * Return timer value in microsecond units + * XLB clock 100 MHz / 1us is equal to 100 counts + */ +uint32_t +benchmark_timer_read(void) +{ + microsecond_timer_value = (0xFFFFFFFF - MCF548X_SLT_SCNT1)/100; + + return microsecond_timer_value; +} + +void +benchmark_timer_disable_subtracting_average_overhead(bool find_flag) +{ + benchmark_timer_find_average_overhead = find_flag; +} |