[PATCH v8 1/5] arm64: Enable EDAC on ARM64

From: Loc Ho <lho-qTEPVZfXA3Y@public.gmane.org>
To: dougthompson-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org,
	bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org,
	mchehab-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org,
	robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	mark.rutland-5wv7dgnIgG8@public.gmane.org,
	ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org
Cc: linux-edac-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	jcm-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
	patches-qTEPVZfXA3Y@public.gmane.org,
	Loc Ho <lho-qTEPVZfXA3Y@public.gmane.org>
Subject: [PATCH v8 1/5] arm64: Enable EDAC on ARM64
Date: Tue,  5 May 2015 22:02:23 -0600	[thread overview]
Message-ID: <1430884947-16787-2-git-send-email-lho@apm.com> (raw)
In-Reply-To: <1430884947-16787-1-git-send-email-lho-qTEPVZfXA3Y@public.gmane.org>

Add an stub atomic_scrub function and enable EDAC for arm64.

Signed-off-by: Loc Ho <lho-qTEPVZfXA3Y@public.gmane.org>
---
 arch/arm64/Kconfig            |    1 +
 arch/arm64/include/asm/edac.h |   28 ++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm64/include/asm/edac.h

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 4269dba..577078f 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -22,6 +22,7 @@ config ARM64
 	select BUILDTIME_EXTABLE_SORT
 	select CLONE_BACKWARDS
 	select COMMON_CLK
+	select EDAC_SUPPORT
 	select CPU_PM if (SUSPEND || CPU_IDLE)
 	select DCACHE_WORD_ACCESS
 	select GENERIC_ALLOCATOR
diff --git a/arch/arm64/include/asm/edac.h b/arch/arm64/include/asm/edac.h
new file mode 100644
index 0000000..683495b
--- /dev/null
+++ b/arch/arm64/include/asm/edac.h
@@ -0,0 +1,28 @@
+/*
+ * ARM64 EDAC Header File
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef __ASM_EDAC_H
+#define __ASM_EDAC_H
+
+/*
+ * ECC atomic, DMA, SMP and interrupt safe scrub function.
+ */
+static inline void atomic_scrub(void *va, u32 size)
+{
+	/* Stub function for now until an ARM64 HW has a way to test it. */
+	WARN_ONCE(1, "not implemented");
+}
+
+#endif
-- 
1.7.1

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