[PATCH 1/4] powerpc/85xx: Add a head file for cpu type detection

[Zhao Chenhui]

From: chenhui zhao <chenhui.zhao at freescale.com>

The workarounds need to detect the cpu type. Add these macros
and inline routines to help cpu type detection in runtime.

Signed-off-by: Zhao Chenhui <chenhui.zhao at freescale.com>
Signed-off-by: Li Yang <leoli at freescale.com>
---
 arch/powerpc/include/asm/mpc85xx.h |   72 ++++++++++++++++++++++++++++++++++++
 1 files changed, 72 insertions(+), 0 deletions(-)
 create mode 100644 arch/powerpc/include/asm/mpc85xx.h

diff --git a/arch/powerpc/include/asm/mpc85xx.h b/arch/powerpc/include/asm/mpc85xx.h
new file mode 100644
index 0000000..451777c
--- /dev/null
+++ b/arch/powerpc/include/asm/mpc85xx.h
@@ -0,0 +1,72 @@
+/*
+ * MPC85xx cpu type detection
+ *
+ * Copyright 2011-2012 Freescale Semiconductor, Inc.
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __ASM_PPC_CPU_H
+#define __ASM_PPC_CPU_H
+
+#define SVR_REV(svr)	((svr) & 0xFF)		/* SOC design resision */
+#define SVR_MAJ(svr)	(((svr) >>  4) & 0xF)	/* Major revision field*/
+#define SVR_MIN(svr)	(((svr) >>  0) & 0xF)	/* Minor revision field*/
+
+/* Some parts define SVR[0:23] as the SOC version */
+#define SVR_SOC_VER(svr) (((svr) >> 8) & 0xFFFFFF)	/* SOC Version fields */
+
+#define IS_SVR_REV(svr, maj, min) \
+	((SVR_MAJ(svr) == (maj)) && (SVR_MIN(svr) == (min)))
+
+#define SVR_8533	0x803400
+#define SVR_8533_E	0x803C00
+#define SVR_8535	0x803701
+#define SVR_8535_E	0x803F01
+#define SVR_8536	0x803700
+#define SVR_8536_E	0x803F00
+#define SVR_8540	0x803000
+#define SVR_8541	0x807200
+#define SVR_8541_E	0x807A00
+#define SVR_8543	0x803200
+#define SVR_8543_E	0x803A00
+#define SVR_8544	0x803401
+#define SVR_8544_E	0x803C01
+#define SVR_8545	0x803102
+#define SVR_8545_E	0x803902
+#define SVR_8547_E	0x803901
+#define SVR_8548	0x803100
+#define SVR_8548_E	0x803900
+#define SVR_8555	0x807100
+#define SVR_8555_E	0x807900
+#define SVR_8560	0x807000
+#define SVR_8567	0x807501
+#define SVR_8567_E	0x807D01
+#define SVR_8568	0x807500
+#define SVR_8568_E	0x807D00
+#define SVR_8569	0x808000
+#define SVR_8569_E	0x808800
+#define SVR_8572	0x80E000
+#define SVR_8572_E	0x80E800
+
+
+static inline int fsl_svr_is(u32 svr)
+{
+	u32 id = SVR_SOC_VER(mfspr(SPRN_SVR));
+
+	return (id == svr);
+}
+
+/* Return true if current SOC revision is prior to (maj, min)  */
+static inline int fsl_svr_older_than(u8 maj, u8 min)
+{
+	u32 rev = SVR_REV(mfspr(SPRN_SVR));
+	u32 cmp = (maj << 4) | min;
+
+	return (rev < cmp);
+}
+
+#endif
-- 
1.6.4.1