1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/mach-u8500/cpuinfo.c b/arch/arm/mach-u8500/cpuinfo.c
new file mode 100644
index 0000000..20f5ff3
--- /dev/null
+++ b/arch/arm/mach-u8500/cpuinfo.c
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2019 Stephan Gerhold <stephan@gerhold.net>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+
+#define U8500_BOOTROM_BASE	0x90000000
+#define U8500_ASIC_ID_LOC_V2	(U8500_BOOTROM_BASE + 0x1DBF4)
+
+int print_cpuinfo(void)
+{
+	/* Convert ASIC ID to display string, e.g. 0x8520A0 => DB8520 V1.0 */
+	u32 asicid = readl(U8500_ASIC_ID_LOC_V2);
+	u32 cpu = (asicid >> 8) & 0xffff;
+	u32 rev = asicid & 0xff;
+
+	/* 0xA0 => 0x10 (V1.0) */
+	if (rev >= 0xa0)
+		rev -= 0x90;
+
+	printf("CPU: ST-Ericsson DB%x V%d.%d\n", cpu, rev >> 4, rev & 0xf);
+	return 0;
+}