1 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/mach-renesas/cpu_info-rcar.c b/arch/arm/mach-renesas/cpu_info-rcar.c
new file mode 100644
index 0000000..9418836
--- /dev/null
+++ b/arch/arm/mach-renesas/cpu_info-rcar.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * arch/arm/cpu/armv7/rmobile/cpu_info-rcar.c
+ *
+ * Copyright (C) 2013,2014 Renesas Electronics Corporation
+ */
+
+#include <asm/io.h>
+
+#define PRR_MASK		0x7fff
+#define R8A7796_REV_1_0		0x5200
+#define R8A7796_REV_1_1		0x5210
+#define R8A7796_REV_1_3		0x5211
+#define R8A77995_REV_1_1	0x5810
+
+static u32 renesas_get_prr(void)
+{
+	if (IS_ENABLED(CONFIG_RCAR_64))
+		return readl(0xFFF00044);
+
+	return readl(0xFF000044);
+}
+
+u32 renesas_get_cpu_type(void)
+{
+	return (renesas_get_prr() & 0x00007F00) >> 8;
+}
+
+u32 renesas_get_cpu_rev_integer(void)
+{
+	const u32 prr = renesas_get_prr();
+	const u32 rev = prr & PRR_MASK;
+
+	if (rev == R8A7796_REV_1_1 || rev == R8A7796_REV_1_3 ||
+	    rev == R8A77995_REV_1_1)
+		return 1;
+	else
+		return ((prr & 0x000000F0) >> 4) + 1;
+}
+
+u32 renesas_get_cpu_rev_fraction(void)
+{
+	const u32 prr = renesas_get_prr();
+	const u32 rev = prr & PRR_MASK;
+
+	if (rev == R8A7796_REV_1_1 || rev == R8A77995_REV_1_1)
+		return 1;
+	else if (rev == R8A7796_REV_1_3)
+		return 3;
+	else
+		return prr & 0x0000000F;
+}