Implement fapi::delay()

Change-Id: Id24144813b72005d410a12ec5a400d7d50afef00
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/227
Tested-by: Jenkins Server
Reviewed-by: Nicholas E. Bofferding <bofferdn@us.ibm.com>
Reviewed-by: MIKE J. JONES <mjjones@us.ibm.com>

1 files changed, 31 insertions, 1 deletions

diff --git a/src/usr/hwpf/plat/fapiPlatUtil.C b/src/usr/hwpf/plat/fapiPlatUtil.C
index 8a3e22bf9..7962ba4bb 100644
--- a/src/usr/hwpf/plat/fapiPlatUtil.C
+++ b/src/usr/hwpf/plat/fapiPlatUtil.C
@@ -7,8 +7,10 @@
  */
 
 #include <assert.h>
+#include <fapi.H>
 #include <trace/interface.H>
-#include <fapiPlatTrace.H>
+#include <sys/time.h>
+
 
 //******************************************************************************
 // Trace descriptors
@@ -37,4 +39,32 @@ void fapiAssert(bool i_expression)
     assert(i_expression);
 }
 
+//******************************************************************************
+// delay
+//
+// At the present time, VBU runs hostboot without a Simics
+// front end. If a HW procedure wants to delay, we just make the
+// syscall nanosleep().  In the syscall, the kernel will continue to consume
+// clock cycles as it looks for a runnable task. When the sleep time expires,
+// the calling task will resume running.
+//
+// In the future there could be a Simics front end to hostboot VBU. Then
+// a possible implementation will be to use the Simics magic instruction
+// to trigger a Simics hap. The Simics hap handler can call the simdispatcher
+// client/server API to tell the Awan to advance some number of cycles.
+//
+// Monte  4 Aug 2011
+//******************************************************************************
+
+fapi::ReturnCode delay( uint64_t i_nanoSeconds, uint64_t i_simCycles )
+{
+    FAPI_DBG( INFO_MRK "delay %lld nanosec", i_nanoSeconds );
+    nanosleep( 0, i_nanoSeconds );
+    return fapi::FAPI_RC_SUCCESS;
+}
+
+
+
+
+
 }