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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/mbx8xx | |
| 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 'c/src/lib/libbsp/powerpc/mbx8xx')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mbx8xx/startup/bspstart.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/mbx8xx/startup/bspstart.c b/c/src/lib/libbsp/powerpc/mbx8xx/startup/bspstart.c index 09d4fab9b4..6216754184 100644 --- a/c/src/lib/libbsp/powerpc/mbx8xx/startup/bspstart.c +++ b/c/src/lib/libbsp/powerpc/mbx8xx/startup/bspstart.c @@ -19,6 +19,7 @@ #include <bsp.h> #include <bsp/irq.h> #include <rtems/bspIo.h> +#include <rtems/counter.h> #include <libcpu/cpuIdent.h> #include <libcpu/spr.h> #include <rtems/powerpc/powerpc.h> @@ -142,6 +143,7 @@ void bsp_start(void) #else bsp_clicks_per_usec = 1; /* for 4MHz extclk */ #endif + rtems_counter_initialize_converter(bsp_clicks_per_usec * 1000000); bsp_serial_per_sec = 10000000; bsp_serial_external_clock = true; |