sparc32,leon: added some SMP comments
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/include/asm/smp_32.h b/arch/sparc/include/asm/smp_32.h
index d82d7f4..d7837dc 100644
--- a/arch/sparc/include/asm/smp_32.h
+++ b/arch/sparc/include/asm/smp_32.h
@@ -135,6 +135,11 @@
__asm__ __volatile__("lda [%g0] ASI_M_VIKING_TMP1, %0\n\t"
"nop; nop" :
"=&r" (cpuid));
+ - leon
+ __asm__ __volatile__( "rd %asr17, %0\n\t"
+ "srl %0, 0x1c, %0\n\t"
+ "nop\n\t" :
+ "=&r" (cpuid));
See btfixup.h and btfixupprep.c to understand how a blackbox works.
*/
__asm__ __volatile__("sethi %%hi(___b_hard_smp_processor_id), %0\n\t"