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Commit 6c87b220 authored by Jeremy Kerr's avatar Jeremy Kerr Committed by Michael Ellerman
Browse files

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: default avatarJeremy Kerr <jk@ozlabs.org>
Acked-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 1680e4ba

arch/powerpc/boot/libfdt_env.h

+8 −6
Original line number Diff line number Diff line
@@ -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 */

arch/powerpc/boot/of.h

+8 −0
Original line number Diff line number Diff line
@@ -24,11 +24,19 @@ void of_console_init(void); 
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)