From 24bf11eca11947d961cc9bb5f7d92dabff169e93 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Wed, 12 Feb 2014 10:31:38 +0100 Subject: 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. --- c/src/lib/libbsp/powerpc/gen5200/startup/bspstart.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'c/src/lib/libbsp/powerpc/gen5200/startup/bspstart.c') diff --git a/c/src/lib/libbsp/powerpc/gen5200/startup/bspstart.c b/c/src/lib/libbsp/powerpc/gen5200/startup/bspstart.c index 821b6332a0..56de4a5aca 100644 --- a/c/src/lib/libbsp/powerpc/gen5200/startup/bspstart.c +++ b/c/src/lib/libbsp/powerpc/gen5200/startup/bspstart.c @@ -95,6 +95,7 @@ /***********************************************************************/ #include +#include #include @@ -164,6 +165,7 @@ void bsp_start(void) bsp_time_base_frequency = XLB_CLOCK / 4; bsp_clicks_per_usec = (XLB_CLOCK/4000000); + rtems_counter_initialize_converter(bsp_time_base_frequency); /* Initialize exception handler */ ppc_exc_cache_wb_check = 0; -- cgit v1.2.3