Changeset 65f868c in rtems for bsps/powerpc/virtex5

Timestamp:

May 23, 2018, 12:17:25 PM (3 years ago)

Author:

Sebastian Huber <sebastian.huber@…>

Branches:

5, master

Children:

762fa62

Parents:

4c7b18e3

git-author:

Sebastian Huber <sebastian.huber@…> (05/23/18 12:17:25)

git-committer:

Sebastian Huber <sebastian.huber@…> (06/15/18 11:02:44)

Message:

Add _CPU_Counter_frequency()

Add rtems_counter_frequency() API function. Use it to initialize the
counter value converter via the new system initialization step
(RTEMS_SYSINIT_CPU_COUNTER). This decouples the counter implementation
and the counter converter. It avoids an unnecessary pull in of the
64-bit integer division from libgcc.

Update #3456.

File:

• bsps/powerpc/virtex5/start/bspstart.c (modified) (2 diffs)

bsps/powerpc/virtex5/start/bspstart.c

@@ -145 +145 @@
 }
 
+uint32_t _CPU_Counter_frequency(void)
+{
+  return BSP_bus_frequency / (BSP_time_base_divisor / 1000);
+}
 
 /*===================================================================*/
@@ -186 +190 @@
   /* Timebase register ticks/microsecond;  The application may override these */
   bsp_clicks_per_usec        = BSP_bus_frequency/(BSP_time_base_divisor * 1000);
-  rtems_counter_initialize_converter(
-    BSP_bus_frequency / (BSP_time_base_divisor / 1000)
-  );
 
   /*