ARM: keystone2: Enable CONFIG_DISPLAY_CPUINFO

Add print_cpuinfo() function and enable
CONFIG_DISPLAY_CPUINFO for keystone platforms,
so that cpu info can be displayed during boot.
Reviewed-by: NTom Rini <trini@konsulko.com>
Reviewed-by: NVitaly Andrianov <vitalya@ti.com>
Signed-off-by: NLokesh Vutla <lokeshvutla@ti.com>

arch/arm/mach-keystone/init.c

@@ -149,3 +149,35 @@ void enable_caches(void)
 	dcache_enable();
 #endif
 }
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+int print_cpuinfo(void)
+{
+	u16 cpu = get_part_number();
+	u8 rev = cpu_revision();
+
+	puts("CPU: ");
+	switch (cpu) {
+	case CPU_66AK2Hx:
+		puts("66AK2Hx SR");
+		break;
+	case CPU_66AK2Lx:
+		puts("66AK2Lx SR");
+		break;
+	case CPU_66AK2Ex:
+		puts("66AK2Ex SR");
+		break;
+	default:
+		puts("Unknown\n");
+	}
+
+	if (rev == 2)
+		puts("2.0\n");
+	else if (rev == 1)
+		puts("1.1\n");
+	else if (rev == 0)
+		puts("1.0\n");
+
+	return 0;
+}
+#endif

include/configs/ti_armv7_keystone2.h

@@ -15,6 +15,7 @@
 /* U-Boot Build Configuration */
 #define CONFIG_SKIP_LOWLEVEL_INIT	/* U-Boot is a 2nd stage loader */
 #define CONFIG_BOARD_EARLY_INIT_F
+#define CONFIG_DISPLAY_CPUINFO
 
 /* SoC Configuration */
 #define CONFIG_ARCH_CPU_INIT