[U-Boot] [PATCH] ARC: add macro to get CPU id

[Eugeniy Paltsev]

ARCNUM [15:8] field in ARC_AUX_IDENTITY register allows you to
uniquely identify each core in a multi-core system.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev at synopsys.com>
---
 arch/arc/include/asm/arcregs.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h
index 54a9b00..2a1bfc7 100644
--- a/arch/arc/include/asm/arcregs.h
+++ b/arch/arc/include/asm/arcregs.h
@@ -72,6 +72,9 @@
 /* gcc builtin sr needs reg param to be long immediate */
 #define write_aux_reg(reg_immed, val)		\
 		__builtin_arc_sr((unsigned int)val, reg_immed)
+
+/* ARCNUM [15:8] - field to identify each core in a multi-core system */
+#define CPU_ID_GET()	((read_aux_reg(ARC_AUX_IDENTITY) & 0xFF00) >> 8)
 #endif /* __ASSEMBLY__ */
 
 #endif /* _ASM_ARC_ARCREGS_H */
-- 
2.9.3