Blackfin: initial XIP support

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/include/asm/context.S b/arch/blackfin/include/asm/context.S
index 5dffaf5..fada8e9 100644
--- a/arch/blackfin/include/asm/context.S
+++ b/arch/blackfin/include/asm/context.S
@@ -374,3 +374,13 @@
 
 	(R7:0, P5:0) = [SP++];
 .endm
+
+.macro pseudo_long_call func:req, scratch:req
+#ifdef CONFIG_ROMKERNEL
+	\scratch\().l = \func;
+	\scratch\().h = \func;
+	call (\scratch);
+#else
+	call \func;
+#endif
+.endm