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aarch64: add big endian(aarch64_be) support

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Add aarch64_be support. Note that CONFIG_CPU_BIG_ENDIAN should be
defined in kernel config when building a big endian kernel.

Signed-off-by: Zhang Jian(Bamvor) <bamvor.zhangjian@huawei.com>
Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Bamvor Jian Zhang 2015-03-18 17:49:48 +08:00 committed by Thomas Petazzoni
parent 44c48b1274
commit 827ba46556
4 changed files with 28 additions and 17 deletions
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2
Makefile
View File

@ -329,7 +329,7 @@ KERNEL_ARCH := $(shell echo "$(ARCH)" | sed -e "s/-.*//" \
-e s/arcle/arc/ \
-e s/arceb/arc/ \
-e s/arm.*/arm/ -e s/sa110/arm/ \
-e s/aarch64/arm64/ \
-e s/aarch64.*/arm64/ \
-e s/bfin/blackfin/ \
-e s/parisc64/parisc/ \
-e s/powerpc64.*/powerpc/ \

12
arch/Config.in
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@ -59,7 +59,15 @@ config BR2_armeb
http://en.wikipedia.org/wiki/ARM
config BR2_aarch64
bool "AArch64"
bool "AArch64 (little endian)"
select BR2_ARCH_IS_64
help
Aarch64 is a 64-bit architecture developed by ARM Holdings.
http://www.arm.com/products/processors/instruction-set-architectures/armv8-architecture.php
http://en.wikipedia.org/wiki/ARM
config BR2_aarch64_be
bool "AArch64 (big endian)"
select BR2_ARCH_IS_64
select BR2_ARCH_HAS_MMU_MANDATORY
help
@ -347,7 +355,7 @@ if BR2_arm || BR2_armeb
source "arch/Config.in.arm"
endif
if BR2_aarch64
if BR2_aarch64 || BR2_aarch64_be
source "arch/Config.in.aarch64"
endif

4
arch/Config.in.aarch64
View File

@ -1,8 +1,10 @@
config BR2_ARCH
default "aarch64" if BR2_aarch64
default "aarch64_be" if BR2_aarch64_be
config BR2_ENDIAN
default "LITTLE"
default "LITTLE" if BR2_aarch64
default "BIG" if BR2_aarch64_be
config BR2_ARCH_HAS_ATOMICS
default y

27
toolchain/toolchain-buildroot/Config.in
View File

@ -23,8 +23,8 @@ source "package/linux-headers/Config.in.host"
choice
prompt "C library"
default BR2_TOOLCHAIN_UCLIBC
default BR2_TOOLCHAIN_BUILDROOT_GLIBC if BR2_aarch64 || BR2_microblaze \
|| BR2_mips64 || BR2_mips64el || BR2_powerpc64
default BR2_TOOLCHAIN_BUILDROOT_GLIBC if BR2_aarch64 || BR2_aarch64_be \
|| BR2_microblaze || BR2_mips64 || BR2_mips64el || BR2_powerpc64
config BR2_TOOLCHAIN_BUILDROOT_UCLIBC
bool "uClibc"
@ -42,11 +42,12 @@ config BR2_TOOLCHAIN_BUILDROOT_UCLIBC
config BR2_TOOLCHAIN_BUILDROOT_EGLIBC
bool "eglibc"
depends on BR2_arm || BR2_armeb || BR2_aarch64 || \
BR2_i386 || BR2_mips || BR2_mipsel || \
BR2_mips64 || BR2_mips64el || BR2_powerpc || \
BR2_sh || BR2_sh64 || BR2_sparc || \
BR2_x86_64 || BR2_microblaze || BR2_powerpc64
depends on BR2_arm || BR2_armeb || BR2_aarch64 || \
BR2_aarch64_be || BR2_i386 || BR2_mips || \
BR2_mipsel || BR2_mips64 || BR2_mips64el || \
BR2_powerpc || BR2_sh || BR2_sh64 || \
BR2_sparc || BR2_x86_64 || BR2_microblaze || \
BR2_powerpc64
depends on BR2_USE_MMU
depends on !BR2_STATIC_LIBS
depends on BR2_DEPRECATED_SINCE_2015_08
@ -61,12 +62,12 @@ config BR2_TOOLCHAIN_BUILDROOT_EGLIBC
config BR2_TOOLCHAIN_BUILDROOT_GLIBC
bool "glibc"
depends on BR2_arm || BR2_armeb || BR2_aarch64 || \
BR2_i386 || BR2_mips || BR2_mipsel || \
BR2_mips64 || BR2_mips64el || BR2_powerpc || \
BR2_powerpc64 || BR2_powerpc64le || BR2_sh || \
BR2_sh64 || BR2_sparc || BR2_x86_64 || \
BR2_microblaze || BR2_nios2
depends on BR2_arm || BR2_armeb || BR2_aarch64 || \
BR2_aarch64_be || BR2_i386 || BR2_mips || \
BR2_mipsel || BR2_mips64 || BR2_mips64el|| \
BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le || \
BR2_sh || BR2_sh64 || BR2_sparc || \
BR2_x86_64 || BR2_microblaze || BR2_nios2
depends on BR2_USE_MMU
depends on !BR2_STATIC_LIBS
depends on !BR2_powerpc_SPE