powerpc/boot/fdt: Add little-endian support to libfdt wrappers
For epapr-style boot, we may be little-endian. This change implements
the proper conversion for fdt*_to_cpu and cpu_to_fdt*. We also need the
full cpu_to_* and *_to_cpu macros for this.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/boot/libfdt_env.h b/arch/powerpc/boot/libfdt_env.h
index c89fdb1..8dcd744 100644
--- a/arch/powerpc/boot/libfdt_env.h
+++ b/arch/powerpc/boot/libfdt_env.h
@@ -4,15 +4,17 @@
#include <types.h>
#include <string.h>
+#include "of.h"
+
typedef u32 uint32_t;
typedef u64 uint64_t;
typedef unsigned long uintptr_t;
-#define fdt16_to_cpu(x) (x)
-#define cpu_to_fdt16(x) (x)
-#define fdt32_to_cpu(x) (x)
-#define cpu_to_fdt32(x) (x)
-#define fdt64_to_cpu(x) (x)
-#define cpu_to_fdt64(x) (x)
+#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 /* _ARCH_POWERPC_BOOT_LIBFDT_ENV_H */
diff --git a/arch/powerpc/boot/of.h b/arch/powerpc/boot/of.h
index c8c1750..5603320 100644
--- a/arch/powerpc/boot/of.h
+++ b/arch/powerpc/boot/of.h
@@ -24,11 +24,19 @@
typedef u32 __be32;
#ifdef __LITTLE_ENDIAN__
+#define cpu_to_be16(x) swab16(x)
+#define be16_to_cpu(x) swab16(x)
#define cpu_to_be32(x) swab32(x)
#define be32_to_cpu(x) swab32(x)
+#define cpu_to_be64(x) swab64(x)
+#define be64_to_cpu(x) swab64(x)
#else
+#define cpu_to_be16(x) (x)
+#define be16_to_cpu(x) (x)
#define cpu_to_be32(x) (x)
#define be32_to_cpu(x) (x)
+#define cpu_to_be64(x) (x)
+#define be64_to_cpu(x) (x)
#endif
#define PROM_ERROR (-1u)
