1 files changed, 59 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/cpu_info.c b/arch/arm/mach-uniphier/cpu_info.c
new file mode 100644
index 0000000..13a0b1e
--- /dev/null
+++ b/arch/arm/mach-uniphier/cpu_info.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2013-2014 Panasonic Corporation
+ *   Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <mach/sg-regs.h>
+
+int print_cpuinfo(void)
+{
+	u32 revision, type, model, rev, required_model = 1, required_rev = 1;
+
+	revision = readl(SG_REVISION);
+	type = (revision & SG_REVISION_TYPE_MASK) >> SG_REVISION_TYPE_SHIFT;
+	model = (revision & SG_REVISION_MODEL_MASK) >> SG_REVISION_MODEL_SHIFT;
+	rev = (revision & SG_REVISION_REV_MASK) >> SG_REVISION_REV_SHIFT;
+
+	puts("CPU:   ");
+
+	switch (type) {
+	case 0x25:
+		puts("PH1-sLD3 (MN2WS0220)");
+		required_model = 2;
+		break;
+	case 0x26:
+		puts("PH1-LD4 (MN2WS0250)");
+		required_rev = 2;
+		break;
+	case 0x28:
+		puts("PH1-Pro4 (MN2WS0230)");
+		break;
+	case 0x29:
+		puts("PH1-sLD8 (MN2WS0270)");
+		break;
+	default:
+		printf("Unknown Processor ID (0x%x)\n", revision);
+		return -1;
+	}
+
+	if (model > 1)
+		printf(" model %d", model);
+
+	printf(" (rev. %d)\n", rev);
+
+	if (model < required_model) {
+		printf("Sorry, this model is not supported.\n");
+		printf("Required model is %d.", required_model);
+		return -1;
+	} else if (rev < required_rev) {
+		printf("Sorry, this revision is not supported.\n");
+		printf("Required revision is %d.", required_rev);
+		return -1;
+	}
+
+	return 0;
+}