[PATCH 2/6] omap3: Detect cpu based on hawkeye

[Sanjeev Premi]

This patch sets the cpu type based on the hawkeye value
read from the IDCODE register. So far, cpu type was
hardcoded.

Signed-off-by: Sanjeev Premi <premi at ti.com>
---
 arch/arm/mach-omap/include/mach/sys_info.h |    5 +++++
 arch/arm/mach-omap/omap3_generic.c         |   14 +++++++++++++-
 2 files changed, 18 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-omap/include/mach/sys_info.h b/arch/arm/mach-omap/include/mach/sys_info.h
index 4396720..f9df51c 100644
--- a/arch/arm/mach-omap/include/mach/sys_info.h
+++ b/arch/arm/mach-omap/include/mach/sys_info.h
@@ -81,6 +81,11 @@
 #define HS_DEVICE               0x2
 #define GP_DEVICE               0x3
 
+/**
+ * Hawkeye definitions to identify silicon families
+ */
+#define OMAP_HAWKEYE_34XX	0xB7AE
+
 /** These are implemented by the System specific code in omapX-generic.c */
 u32 get_cpu_type(void);
 u32 get_cpu_rev(void);
diff --git a/arch/arm/mach-omap/omap3_generic.c b/arch/arm/mach-omap/omap3_generic.c
index a079f38..cd9aceb 100644
--- a/arch/arm/mach-omap/omap3_generic.c
+++ b/arch/arm/mach-omap/omap3_generic.c
@@ -70,7 +70,19 @@ EXPORT_SYMBOL(reset_cpu);
  */
 u32 get_cpu_type(void)
 {
-	/* FIXME: need to get register defines for 3430 */
+	u32 idcode_val;
+	u16 hawkeye;
+
+	idcode_val = readl(IDCODE_REG);
+
+	hawkeye = get_hawkeye(idcode_val);
+
+	if (hawkeye == OMAP_HAWKEYE_34XX)
+		return CPU_3430;
+
+	/*
+	 * Fallback to OMAP3430 as default.
+	 */
 	return CPU_3430;
 }
 
-- 
1.7.2.2