From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 37EF61A056B for ; Wed, 11 Feb 2015 15:55:49 +1100 (AEDT) Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Subject: [PATCH 2/5 v2] powerpc/boot/fdt: Add little-endian support to libfdt wrappers Message-Id: <1423630544.752438.317337864668.2.gpush@pablo> In-Reply-To: <1423630544.752188.889982625387.1.gpush@pablo> To: linuxppc-dev@lists.ozlabs.org From: Jeremy Kerr Date: Wed, 11 Feb 2015 12:55:44 +0800 Cc: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 Acked-by: Benjamin Herrenschmidt --- arch/powerpc/boot/libfdt_env.h | 14 ++++++++------ arch/powerpc/boot/of.h | 8 ++++++++ 2 files changed, 16 insertions(+), 6 deletions(-) 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 #include +#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 @@ 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)