commit 7c4a6e68006673c11f1e71194e081e88b7513fde
author Dimitris Papastamos <dimitris.papastamos@arm.com> Mon Jan 15 14:52:57 2018 +0000
committer Dimitris Papastamos <dimitris.papastamos@arm.com> Mon Jan 15 15:07:06 2018 +0000
tree abbe073d266c1787cad58b8c8bbe614c8b1472ce
parent fa2b73658e02bf8d10c341aea9e891b4f02b1c8e

AMU: Remove unnecessary WARN()

If AMU is not supported by the hardware but it is enabled in Trusted
Firmware, the console will be spammed with warnings every time a CPU
is brought up with a CPU ON call.

Remove the warning message as this is more in line with how other
extensions like SPE and SVE are handled.

Change-Id: Iba6d367e4d1375ab554d23d2eaceab3ae1362c5a
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>

lib/extensions/amu/aarch32/amu.c

diff --git a/lib/extensions/amu/aarch32/amu.c b/lib/extensions/amu/aarch32/amu.c
index 55462cb..effc5bd 100644
--- a/lib/extensions/amu/aarch32/amu.c
+++ b/lib/extensions/amu/aarch32/amu.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -7,7 +7,6 @@
 #include <amu.h>
 #include <arch.h>
 #include <arch_helpers.h>
-#include <debug.h>
 #include <platform.h>
 #include <pubsub_events.h>
 
@@ -24,10 +23,8 @@
 	uint64_t features;
 
 	features = read_id_pfr0() >> ID_PFR0_AMU_SHIFT;
-	if ((features & ID_PFR0_AMU_MASK) != 1) {
-		WARN("Cannot enable AMU - not supported\n");
+	if ((features & ID_PFR0_AMU_MASK) != 1)
 		return;
-	}
 
 	if (el2_unused) {
 		uint64_t v;

lib/extensions/amu/aarch64/amu.c

diff --git a/lib/extensions/amu/aarch64/amu.c b/lib/extensions/amu/aarch64/amu.c
index f743e20..d7645a9 100644
--- a/lib/extensions/amu/aarch64/amu.c
+++ b/lib/extensions/amu/aarch64/amu.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -9,7 +9,6 @@
 #include <arch.h>
 #include <arch_helpers.h>
 #include <assert.h>
-#include <debug.h>
 #include <platform.h>
 #include <pubsub_events.h>
 
@@ -38,10 +37,8 @@
 {
 	uint64_t v;
 
-	if (!amu_supported()) {
-		WARN("Cannot enable AMU - not supported\n");
+	if (!amu_supported())
 		return;
-	}
 
 	if (el2_unused) {
 		/*