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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-02-12 10:31:38 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-02-14 10:28:29 +0100 |
| commit | 24bf11eca11947d961cc9bb5f7d92dabff169e93 (patch) | |
| tree | b28f3aa8a21df91e8feaf324613aa76460559837 /c/src/lib/libbsp/powerpc/score603e/startup/bspstart.c | |
| parent | bsps/arm: Fix Cortex-A9 MPCore nanoseconds handler (diff) | |
| download | rtems-24bf11eca11947d961cc9bb5f7d92dabff169e93.tar.bz2 | |
score: Add CPU counter support
Add a CPU counter interface to allow access to a free-running counter.
It is useful to measure short time intervals. This can be used for
example to enable profiling of critical low-level functions.
Add two busy wait functions rtems_counter_delay_ticks() and
rtems_counter_delay_nanoseconds() implemented via the CPU counter.
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/score603e/startup/bspstart.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/score603e/startup/bspstart.c b/c/src/lib/libbsp/powerpc/score603e/startup/bspstart.c index 8739efb1f9..3519a59f3b 100644 --- a/c/src/lib/libbsp/powerpc/score603e/startup/bspstart.c +++ b/c/src/lib/libbsp/powerpc/score603e/startup/bspstart.c @@ -19,6 +19,7 @@ #include <rtems/libio.h> #include <rtems/libcsupport.h> #include <rtems/bspIo.h> +#include <rtems/counter.h> #include <libcpu/cpuIdent.h> #include <bsp/irq.h> @@ -210,6 +211,7 @@ void bsp_start( void ) printk("bsp_start: set clicks poer usec\n"); #endif bsp_clicks_per_usec = 66 / 4; + rtems_counter_initialize_converter(bsp_clicks_per_usec * 1000000); #if BSP_DATA_CACHE_ENABLED #if DEBUG |