diff --git a/arch/powerpc/boot/types.h b/arch/powerpc/boot/types.h
index 79d26e7..31393d1 100644
--- a/arch/powerpc/boot/types.h
+++ b/arch/powerpc/boot/types.h
@@ -7,6 +7,10 @@
 typedef unsigned short		u16;
 typedef unsigned int		u32;
 typedef unsigned long long	u64;
+typedef signed char		s8;
+typedef short			s16;
+typedef int			s32;
+typedef long long		s64;
 
 #define min(x,y) ({ \
 	typeof(x) _x = (x);	\