(CPU_PROVIDES_IDLE_THREAD_BODY, CPU_STACK_GROWS_UP, CPU_STRUCTURE_ALIGNMENT, CPU_HAS_OWN_HOST_TO_NETWORK_ROUTINES, CPU_BIG_ENDIAN, CPU_LITTLE_ENDIAN): Add.

1 files changed, 66 insertions, 0 deletions

diff --git a/cpukit/score/cpu/powerpc/rtems/score/cpu.h b/cpukit/score/cpu/powerpc/rtems/score/cpu.h
index c006886928..b627ff9b40 100644
--- a/cpukit/score/cpu/powerpc/rtems/score/cpu.h
+++ b/cpukit/score/cpu/powerpc/rtems/score/cpu.h
@@ -56,6 +56,72 @@
 #define CPU_UNROLL_ENQUEUE_PRIORITY      FALSE
 
 /*
+ *  Does this port provide a CPU dependent IDLE task implementation?
+ *
+ *  If TRUE, then the routine _CPU_Thread_Idle_body
+ *  must be provided and is the default IDLE thread body instead of
+ *  _CPU_Thread_Idle_body.
+ *
+ *  If FALSE, then use the generic IDLE thread body if the BSP does
+ *  not provide one.
+ *
+ *  This is intended to allow for supporting processors which have
+ *  a low power or idle mode.  When the IDLE thread is executed, then
+ *  the CPU can be powered down.
+ *
+ *  The order of precedence for selecting the IDLE thread body is:
+ *
+ *    1.  BSP provided
+ *    2.  CPU dependent (if provided)
+ *    3.  generic (if no BSP and no CPU dependent)
+ */
+
+#define CPU_PROVIDES_IDLE_THREAD_BODY    FALSE
+
+/*
+ *  Does the stack grow up (toward higher addresses) or down
+ *  (toward lower addresses)?
+ *
+ *  If TRUE, then the grows upward.
+ *  If FALSE, then the grows toward smaller addresses.
+ */
+
+#define CPU_STACK_GROWS_UP               FALSE
+
+/*
+ *  The following is the variable attribute used to force alignment
+ *  of critical RTEMS structures.  On some processors it may make
+ *  sense to have these aligned on tighter boundaries than
+ *  the minimum requirements of the compiler in order to have as
+ *  much of the critical data area as possible in a cache line.
+ *
+ *  The placement of this macro in the declaration of the variables
+ *  is based on the syntactically requirements of the GNU C
+ *  "__attribute__" extension.  For example with GNU C, use
+ *  the following to force a structures to a 32 byte boundary.
+ *
+ *      __attribute__ ((aligned (32)))
+ *
+ *  NOTE:  Currently only the Priority Bit Map table uses this feature.
+ *         To benefit from using this, the data must be heavily
+ *         used so it will stay in the cache and used frequently enough
+ *         in the executive to justify turning this on.
+ */
+
+#define CPU_STRUCTURE_ALIGNMENT \
+  __attribute__ ((aligned (PPC_CACHE_ALIGNMENT)))
+
+/*
+ *  Define what is required to specify how the network to host conversion
+ *  routines are handled.
+ */
+
+#define CPU_HAS_OWN_HOST_TO_NETWORK_ROUTINES     FALSE
+#define CPU_BIG_ENDIAN                           TRUE
+#define CPU_LITTLE_ENDIAN                        FALSE
+
+
+/*
  *  Processor defined structures required for cpukit/score.
  */