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Message-Id: <1499358861-179979-3-git-send-email-babu.moger@oracle.com>
Date: Thu, 6 Jul 2017 09:34:20 -0700
From: Babu Moger <babu.moger@...cle.com>
To: gregkh@...uxfoundation.org, ysato@...rs.sourceforge.jp,
geert@...ux-m68k.org, jonas@...thpole.se,
stefan.kristiansson@...nalahti.fi, shorne@...il.com,
jejb@...isc-linux.org, deller@....de, davem@...emloft.net,
viro@...iv.linux.org.uk, monstr@...str.eu
Cc: mpe@...erman.id.au, peterz@...radead.org, mingo@...hat.com,
jcmvbkbc@...il.com, linux-kernel@...r.kernel.org,
uclinux-h8-devel@...ts.sourceforge.jp, linux-m68k@...r.kernel.org,
openrisc@...ts.librecores.org, linux-parisc@...r.kernel.org,
sparclinux@...r.kernel.org
Subject: [PATCH v3 2/3] arch/microblaze: Add choice for endianness and update Makefile
microblaze architectures can be configured for either little or
big endian formats. Add a choice option for the user to select the
correct endian format(default to big endian).
Also update the Makefile so toolchain can compile for the format
it is configured for.
Signed-off-by: Babu Moger <babu.moger@...cle.com>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
arch/microblaze/Kconfig | 16 ++++++++++++++++
arch/microblaze/Makefile | 2 ++
2 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 85885a5..74aa5de 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -35,6 +35,22 @@ config MICROBLAZE
select VIRT_TO_BUS
select CPU_NO_EFFICIENT_FFS
+# Endianness selection
+choice
+ prompt "Endianness selection"
+ default CPU_BIG_ENDIAN
+ help
+ microblaze architectures can be configured for either little or
+ big endian formats. Be sure to select the appropriate mode.
+
+config CPU_BIG_ENDIAN
+ bool "Big endian"
+
+config CPU_LITTLE_ENDIAN
+ bool "Little endian"
+
+endchoice
+
config SWAP
def_bool n
diff --git a/arch/microblaze/Makefile b/arch/microblaze/Makefile
index 740f2b8..1f6c486 100644
--- a/arch/microblaze/Makefile
+++ b/arch/microblaze/Makefile
@@ -35,6 +35,8 @@ endif
CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
+CPUFLAGS-$(CONFIG_BIG_ENDIAN) += -mbig-endian
+CPUFLAGS-$(CONFIG_LITTLE_ENDIAN) += -mlittle-endian
CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
--
1.7.1
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