From 76358fc28a3e7b2a46b2a0958425e243a3391ab3 Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Tue, 25 Jul 2023 08:03:02 +0200
Subject: build: Add RTEMS_PPS_SYNC CPU option

---
 cpukit/include/sys/timepps.h              |  3 +++
 cpukit/score/src/kern_tc.c                |  4 ++++
 spec/build/cpukit/cpuopts.yml             |  2 ++
 spec/build/cpukit/optppssync.yml          | 17 +++++++++++++++++
 spec/build/testsuites/sptests/sppps01.yml |  2 +-
 5 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 spec/build/cpukit/optppssync.yml

diff --git a/cpukit/include/sys/timepps.h b/cpukit/include/sys/timepps.h
index 502d93833e..4b76f2e36c 100644
--- a/cpukit/include/sys/timepps.h
+++ b/cpukit/include/sys/timepps.h
@@ -34,8 +34,11 @@
 #include <sys/ioccom.h>
 #include <sys/time.h>
 #ifdef __rtems__
+#include <rtems/score/cpuopts.h>
 #include <rtems/score/atomic.h>
+#ifdef RTEMS_PPS_SYNC
 #define	PPS_SYNC
+#endif
 #define hardpps _Timecounter_Discipline
 #ifdef __cplusplus
 extern "C" {
diff --git a/cpukit/score/src/kern_tc.c b/cpukit/score/src/kern_tc.c
index 95ae01b5b4..9a4896c5f6 100644
--- a/cpukit/score/src/kern_tc.c
+++ b/cpukit/score/src/kern_tc.c
@@ -1519,6 +1519,7 @@ unlock:
 #endif /* __rtems__ */
 }
 
+#ifdef RTEMS_PPS_SYNC
 /* Report the frequency of the current timecounter. */
 uint64_t
 tc_getfrequency(void)
@@ -1526,6 +1527,7 @@ tc_getfrequency(void)
 
 	return (timehands->th_counter->tc_frequency);
 }
+#endif
 
 #ifndef __rtems__
 static bool
@@ -1904,6 +1906,7 @@ SYSCTL_PROC(_kern_timecounter, OID_AUTO, choice,
     "Timecounter hardware detected");
 #endif /* __rtems__ */
 
+#ifdef RTEMS_PPS_SYNC
 /*
  * RFC 2783 PPS-API implementation.
  */
@@ -2292,6 +2295,7 @@ pps_event(struct pps_state *pps, int event)
 	(*pps->wakeup)(pps);
 #endif /* __rtems__ */
 }
+#endif /* RTEMS_PPS_SYNC */
 
 /*
  * Timecounters need to be updated every so often to prevent the hardware
diff --git a/spec/build/cpukit/cpuopts.yml b/spec/build/cpukit/cpuopts.yml
index 9ab3e0d298..d7bb3ac4c3 100644
--- a/spec/build/cpukit/cpuopts.yml
+++ b/spec/build/cpukit/cpuopts.yml
@@ -47,6 +47,8 @@ links:
   uid: optnewlib
 - role: build-dependency
   uid: optparavirt
+- role: build-dependency
+  uid: optppssync
 - role: build-dependency
   uid: optposix
 - role: build-dependency
diff --git a/spec/build/cpukit/optppssync.yml b/spec/build/cpukit/optppssync.yml
new file mode 100644
index 0000000000..30506f04d7
--- /dev/null
+++ b/spec/build/cpukit/optppssync.yml
@@ -0,0 +1,17 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+actions:
+- get-boolean: null
+- env-enable: null
+- define-condition: null
+build-type: option
+copyrights:
+- Copyright (C) 2023 embedded brains GmbH & Co. KG
+default:
+- enabled-by: true
+  value: true
+description: |
+  Enable the RTEMS PPS synchronization support.
+enabled-by: true
+links: []
+name: RTEMS_PPS_SYNC
+type: build
diff --git a/spec/build/testsuites/sptests/sppps01.yml b/spec/build/testsuites/sptests/sppps01.yml
index 55770eceb9..0f7150e712 100644
--- a/spec/build/testsuites/sptests/sppps01.yml
+++ b/spec/build/testsuites/sptests/sppps01.yml
@@ -5,7 +5,7 @@ copyrights:
 - Copyright (C) 2022 German Aerospace Center (DLR)
 cppflags: []
 cxxflags: []
-enabled-by: true
+enabled-by: RTEMS_PPS_SYNC
 features: c cprogram
 includes: []
 ldflags: []
-- 
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