1 files changed, 35 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/soc-info.c b/arch/arm/mach-uniphier/soc-info.c
new file mode 100644
index 0000000000..baf1be6a01
--- /dev/null
+++ b/arch/arm/mach-uniphier/soc-info.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2017 Socionext Inc.
+ *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <linux/io.h>
+#include <linux/types.h>
+
+#include "sg-regs.h"
+#include "soc-info.h"
+
+static unsigned int __uniphier_get_revision_field(unsigned int mask,
+						  unsigned int shift)
+{
+	u32 revision = readl(SG_REVISION);
+
+	return (revision >> shift) & mask;
+}
+
+unsigned int uniphier_get_soc_id(void)
+{
+	return __uniphier_get_revision_field(0xff, 16);
+}
+
+unsigned int uniphier_get_soc_model(void)
+{
+	return __uniphier_get_revision_field(0x3, 8);
+}
+
+unsigned int uniphier_get_soc_revision(void)
+{
+	return __uniphier_get_revision_field(0x1f, 0);
+}