1 files changed, 76 insertions, 0 deletions
diff --git a/include/asm-arm/arch-db8500/cpu.h b/include/asm-arm/arch-db8500/cpu.h
new file mode 100644
index 000000000..a9d62f4b0
--- /dev/null
+++ b/include/asm-arm/arch-db8500/cpu.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * Author: Joakim Axelsson <joakim.axelsson at stericsson.com>
+ *  for ST-Ericsson
+ *
+ * Origin: Code split from board/st/u8500/u8500.c
+ *
+ * License terms: GNU General Public License (GPL), version 2.
+ */
+
+#ifndef __DB8500_CPU_H__
+#define __DB8500_CPU_H__
+
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+
+#define CPUID_DB8500ED		0x410fc090
+#define CPUID_DB8500V1		0x411fc091
+#define CPUID_DB8500V2		0x412fc091
+
+#define ASICID_DB8500V11	0x008500A1
+
+/*
+ * Keep these CPU identity functions inline here because they are short
+ * and used by many. Will make for fast optimized compiled code.
+ */
+
+static inline unsigned int read_cpuid(void)
+{
+	unsigned int val;
+
+	/* Main ID register (MIDR) */
+	asm("mrc        p15, 0, %0, c0, c0, 0"
+	   : "=r" (val)
+	   :
+	   : "cc");
+
+	return val;
+}
+
+static inline int u8500_is_earlydrop(void)
+{
+	return read_cpuid() == CPUID_DB8500ED;
+}
+
+static inline int cpu_is_u8500v1(void)
+{
+	return read_cpuid() == CPUID_DB8500V1;
+}
+
+static inline int cpu_is_u8500v2(void)
+{
+	return read_cpuid() == CPUID_DB8500V2;
+}
+
+static inline unsigned int read_asicid(void)
+{
+	unsigned int *address;
+
+	if (u8500_is_earlydrop() || cpu_is_u8500v1())
+		address = (void *) U8500_ASIC_ID_LOC_ED_V1;
+	else
+		address = (void *) U8500_ASIC_ID_LOC_V2;
+
+	return readl(address);
+}
+
+static inline int cpu_is_u8500v11(void)
+{
+	return read_asicid() == ASICID_DB8500V11;
+}
+
+
+#endif /* __DB8500_CPU_H__ */
+