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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-02-12 10:31:38 +0100 |
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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/qoriq/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/qoriq/startup/bspstart.c')
-rw-r--r-- | c/src/lib/libbsp/powerpc/qoriq/startup/bspstart.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/qoriq/startup/bspstart.c b/c/src/lib/libbsp/powerpc/qoriq/startup/bspstart.c index c6f6dd9bff..fe726e368a 100644 --- a/c/src/lib/libbsp/powerpc/qoriq/startup/bspstart.c +++ b/c/src/lib/libbsp/powerpc/qoriq/startup/bspstart.c @@ -22,6 +22,7 @@ #include <rtems.h> #include <rtems/config.h> +#include <rtems/counter.h> #include <libchip/serial.h> @@ -89,6 +90,7 @@ void bsp_start(void) BSP_bus_frequency = bsp_uboot_board_info.bi_busfreq; bsp_clicks_per_usec = bsp_uboot_board_info.bi_busfreq / 8000000; #endif /* HAS_UBOOT */ + rtems_counter_initialize_converter(BSP_bus_frequency / 8); /* Initialize some console parameters */ for (i = 0; i < Console_Configuration_Count; ++i) { |