sparc,leon: Sparc-Leon SMP support

Support SMP for a Sparc-Leon multiprocessor system.
Add Leon specific SMP code to arch/sparc/kernel/leon_smp.c.

Signed-off-by: Konrad Eisele <konrad@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/sparc/include/asm/smp_32.h b/arch/sparc/include/asm/smp_32.h
index 58101dc70493..841905c10215 100644
--- a/arch/sparc/include/asm/smp_32.h
+++ b/arch/sparc/include/asm/smp_32.h
@@ -106,6 +106,15 @@ static inline int hard_smp4d_processor_id(void)
         return cpuid;
 }
 
+extern inline int hard_smpleon_processor_id(void)
+{
+        int cpuid;
+        __asm__ __volatile__("rd     %%asr17,%0\n\t"
+                             "srl    %0,28,%0" :
+                             "=&r" (cpuid) : );
+        return cpuid;
+}
+
 #ifndef MODULE
 static inline int hard_smp_processor_id(void)
 {