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/virtex/startup/bspstart.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'c/src/lib/libbsp/powerpc/virtex') diff --git a/c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c b/c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c index c2bedbe478..b29509f7f5 100644 --- a/c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c +++ b/c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c @@ -54,6 +54,8 @@ * Modifications for PPC405GP by Dennis Ehlin */ +#include + #include #include #include @@ -87,6 +89,8 @@ void bsp_start( void ) get_ppc_cpu_type(); get_ppc_cpu_revision(); + rtems_counter_initialize_converter(bsp_time_base_frequency); + /* * Initialize default raw exception handlers. */ -- cgit v1.2.3