libfdt: fixup libfdt_env.h for xen

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Keir Fraser <keir@xen.org>

xen/common/libfdt/libfdt_env.h

@@ -1,23 +1,16 @@
 #ifndef _LIBFDT_ENV_H
 #define _LIBFDT_ENV_H
 
-#include <stddef.h>
-#include <stdint.h>
-#include <string.h>
+#include <xen/config.h>
+#include <xen/types.h>
+#include <xen/string.h>
+#include <asm/byteorder.h>
 
-#define _B(n)	((unsigned long long)((uint8_t *)&x)[n])
-static inline uint32_t fdt32_to_cpu(uint32_t x)
-{
-	return (_B(0) << 24) | (_B(1) << 16) | (_B(2) << 8) | _B(3);
-}
-#define cpu_to_fdt32(x) fdt32_to_cpu(x)
-
-static inline uint64_t fdt64_to_cpu(uint64_t x)
-{
-	return (_B(0) << 56) | (_B(1) << 48) | (_B(2) << 40) | (_B(3) << 32)
-		| (_B(4) << 24) | (_B(5) << 16) | (_B(6) << 8) | _B(7);
-}
-#define cpu_to_fdt64(x) fdt64_to_cpu(x)
-#undef _B
+#define fdt16_to_cpu(x) be16_to_cpu(x)
+#define cpu_to_fdt16(x) cpu_to_be16(x)
+#define fdt32_to_cpu(x) be32_to_cpu(x)
+#define cpu_to_fdt32(x) cpu_to_be32(x)
+#define fdt64_to_cpu(x) be64_to_cpu(x)
+#define cpu_to_fdt64(x) cpu_to_be64(x)
 
 #endif /* _LIBFDT_ENV_H */

xen/include/xen/types.h

@@ -57,4 +57,6 @@ typedef __u32 __be32;
 typedef __u64 __le64;
 typedef __u64 __be64;
 
+typedef unsigned long uintptr_t;
+
 #endif /* __TYPES_H__ */