1 files changed, 19 insertions, 0 deletions

diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h
index ec91d1ff032a..95b3abf4851b 100644
--- a/include/asm-arm/system.h
+++ b/include/asm-arm/system.h
@@ -108,6 +108,25 @@ extern void __show_regs(struct pt_regs *);
 extern int cpu_architecture(void);
 extern void cpu_init(void);
 
+/*
+ * Intel's XScale3 core supports some v6 features (supersections, L2)
+ * but advertises itself as v5 as it does not support the v6 ISA.  For
+ * this reason, we need a way to explicitly test for this type of CPU.
+ */
+#ifndef CONFIG_CPU_XSC3
+#define cpu_is_xsc3()   0
+#else
+static inline int cpu_is_xsc3(void)
+{
+        extern unsigned int processor_id;
+
+        if ((processor_id & 0xffffe000) == 0x69056000)
+                return 1;
+
+        return 0;
+}
+#endif
+
 #define set_cr(x)                                       \
         __asm__ __volatile__(                           \
         "mcr    p15, 0, %0, c1, c0, 0   @ set CR"       \