[PATCH 1/2] Alchemy: simple cpu subtype detector.

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Signed-off-by: Manuel Lauss <manuel.lauss@xxxxxxxxx>
---
 arch/mips/include/asm/mach-au1x00/au1000.h |   34 ++++++++++++++++++++++++++++
 1 files changed, 34 insertions(+), 0 deletions(-)

diff --git a/arch/mips/include/asm/mach-au1x00/au1000.h b/arch/mips/include/asm/mach-au1x00/au1000.h
index 854e95f..85713f8 100644
--- a/arch/mips/include/asm/mach-au1x00/au1000.h
+++ b/arch/mips/include/asm/mach-au1x00/au1000.h
@@ -130,6 +130,40 @@ static inline int au1xxx_cpu_needs_config_od(void)
 	return 0;
 }
 
+#define ALCHEMY_CPU_UNKNOWN	-1
+#define ALCHEMY_CPU_AU1000	0
+#define ALCHEMY_CPU_AU1500	1
+#define ALCHEMY_CPU_AU1100	2
+#define ALCHEMY_CPU_AU1550	3
+#define ALCHEMY_CPU_AU1200	4
+#define ALCHEMY_CPU_AU1300	5
+
+static inline int alchemy_get_cputype(void)
+{
+	switch (read_c0_prid() & 0xffff0000) {
+	case 0x00030000:
+		return ALCHEMY_CPU_AU1000;
+		break;
+	case 0x01030000:
+		return ALCHEMY_CPU_AU1500;
+		break;
+	case 0x02030000:
+		return ALCHEMY_CPU_AU1100;
+		break;
+	case 0x03030000:
+		return ALCHEMY_CPU_AU1550;
+		break;
+	case 0x04030000:
+		return ALCHEMY_CPU_AU1200;
+		break;
+	case 0x800c0000:
+		return ALCHEMY_CPU_AU1300;
+		break;
+	}
+
+	return ALCHEMY_CPU_UNKNOWN;
+}
+
 /* arch/mips/au1000/common/clocks.c */
 extern void set_au1x00_speed(unsigned int new_freq);
 extern unsigned int get_au1x00_speed(void);
-- 
1.6.4



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