diff options
| 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/mpc55xxevb/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 'c/src/lib/libbsp/powerpc/mpc55xxevb/startup/bspstart.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mpc55xxevb/startup/bspstart.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/bspstart.c b/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/bspstart.c index 2d7debef1d..7f4f93524d 100644 --- a/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/bspstart.c +++ b/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/bspstart.c @@ -29,6 +29,7 @@ #include <rtems.h> #include <rtems/config.h> +#include <rtems/counter.h> #include <libcpu/powerpc-utility.h> #include <bsp/vectors.h> @@ -103,6 +104,7 @@ void bsp_start(void) /* Time reference value */ bsp_clicks_per_usec = bsp_clock_speed / 1000000; + rtems_counter_initialize_converter(bsp_clock_speed); /* Initialize exceptions */ ppc_exc_initialize_with_vector_base( |