From f8ca9121896bcff1476943a96d7392eb05f55364 Mon Sep 17 00:00:00 2001
From: Lokesh Vutla <lokeshvutla@ti.com>
Date: Fri, 27 Sep 2019 13:32:11 +0530
Subject: arm: k3: Add support for printing CPUINFO

Add support for printing CPU info for all K3 devices.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
---
 arch/arm/mach-k3/common.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

(limited to 'arch/arm/mach-k3/common.c')

diff --git a/arch/arm/mach-k3/common.c b/arch/arm/mach-k3/common.c
index 6c453b9af4..97aa15d6a6 100644
--- a/arch/arm/mach-k3/common.c
+++ b/arch/arm/mach-k3/common.c
@@ -14,6 +14,8 @@
 #include <linux/soc/ti/ti_sci_protocol.h>
 #include <fdt_support.h>
 #include <asm/arch/sys_proto.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
 
 struct ti_sci_handle *get_ti_sci_handle(void)
 {
@@ -190,3 +192,43 @@ void reset_cpu(ulong ignored)
 {
 }
 #endif
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+int print_cpuinfo(void)
+{
+	u32 soc, rev;
+	char *name;
+
+	soc = (readl(CTRLMMR_WKUP_JTAG_DEVICE_ID) &
+		DEVICE_ID_FAMILY_MASK) >> DEVICE_ID_FAMILY_SHIFT;
+	rev = (readl(CTRLMMR_WKUP_JTAG_ID) &
+		JTAG_ID_VARIANT_MASK) >> JTAG_ID_VARIANT_SHIFT;
+
+	printf("SoC:   ");
+	switch (soc) {
+	case AM654:
+		name = "AM654";
+		break;
+	case J721E:
+		name = "J721E";
+		break;
+	default:
+		name = "Unknown Silicon";
+	};
+
+	printf("%s PG ", name);
+	switch (rev) {
+	case REV_PG1_0:
+		name = "1.0";
+		break;
+	case REV_PG2_0:
+		name = "2.0";
+		break;
+	default:
+		name = "Unknown Revision";
+	};
+	printf("%s\n", name);
+
+	return 0;
+}
+#endif
-- 
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