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Re: [PATCH] arch/aarch64: Add aarch64 support


Zhenqiang, All,

On 2013-12-17 10:12 +0800, Zhenqiang Chen spake thusly:
> # HG changeset patch
> # User Zhenqiang Chen <zhenqiang.chen@linaro.org>
> # Date 1387172069 -28800
> # Node ID 2cdf83834419f2918e36f7eae5915aa32c3254b6
> # Parent  032ebcc89c96f29873070f2d9af6a0260cf2e40e
> arch/aarch64: Add aarch64 support

I think it'd be better if that was added as the 64-bit variant for the
ARM architecture.

But that would first need that:
  - we define CT_LINUX_ARCH globally, default to CT_ARCH
  - we add the 64-bit variant to both arn.in and arm.sh

I'll handle this.

I guess this requires very recent versions of gcc/binutils/glibc, right?

Thanks for the submission! :-)

Regards,
Yann E. MORIN.

> Signed-off-by: Michael Hope <michael.hope@linaro.org>
> Signed-off-by: Zhenqiang Chen <zhenqiang.chen@linaro.org>
> 
> diff -r 032ebcc89c96 -r 2cdf83834419 config/arch/aarch64.in
> --- /dev/null    Thu Jan 01 00:00:00 1970 +0000
> +++ b/config/arch/aarch64.in    Mon Dec 16 13:34:29 2013 +0800
> @@ -0,0 +1,13 @@
> +# ARM AArch64 specific configuration file
> +
> +## select ARCH_SUPPORTS_64
> +## select ARCH_DEFAULT_64
> +## select ARCH_DEFAULT_HAS_MMU
> +## select ARCH_SUPPORTS_BOTH_ENDIAN
> +## select ARCH_DEFAULT_LE
> +## select ARCH_SUPPORTS_WITH_ARCH
> +## select ARCH_SUPPORTS_WITH_CPU
> +## select ARCH_SUPPORTS_WITH_TUNE
> +##
> +## help The ARM AArch64 architecture, as defined by:
> +## help     http://www.arm.com/
> diff -r 032ebcc89c96 -r 2cdf83834419 scripts/build/arch/aarch64.sh
> --- /dev/null    Thu Jan 01 00:00:00 1970 +0000
> +++ b/scripts/build/arch/aarch64.sh    Mon Dec 16 13:34:29 2013 +0800
> @@ -0,0 +1,11 @@
> +# Compute ARM-specific values
> +
> +CT_DoArchTupleValues() {
> +    # The architecture part of the tuple:
> +    [ "${CT_ARCH_BE}" = "y" ] && target_endian_eb="_be"
> +    CT_TARGET_ARCH="${CT_ARCH}${target_endian_eb}"
> +    CT_ARCH_WITH_FLOAT=
> +    CT_ARCH_FLOAT_CFLAG=
> +    # On Linux the architecture is arm64
> +    CT_LINUX_ARCH=arm64
> +}
> diff -r 032ebcc89c96 -r 2cdf83834419 scripts/build/kernel/linux.sh
> --- a/scripts/build/kernel/linux.sh    Fri Nov 22 00:34:49 2013 +0100
> +++ b/scripts/build/kernel/linux.sh    Mon Dec 16 13:34:29 2013 +0800
> @@ -97,6 +97,7 @@
>  # Install kernel headers using headers_install from kernel sources.
>  do_kernel_install() {
>      local kernel_path
> +    local arch=${CT_LINUX_ARCH:-${CT_ARCH}}
> 
>      CT_DoLog DEBUG "Using kernel's headers_install"
> 
> @@ -112,7 +113,7 @@
>      CT_DoExecLog ALL                                    \
>      make -C "${kernel_path}"                            \
>           O="${CT_BUILD_DIR}/build-kernel-headers"       \
> -         ARCH=${CT_ARCH}                                \
> +         ARCH=${arch}                                   \
>           INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr"       \
>           ${V_OPT}                                       \
>           headers_install
> @@ -122,7 +123,7 @@
>          CT_DoExecLog ALL                                    \
>          make -C "${kernel_path}"                            \
>               O="${CT_BUILD_DIR}/build-kernel-headers"       \
> -             ARCH=${CT_ARCH}                                \
> +             ARCH=${arch}                                   \
>               INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr"       \
>               ${V_OPT}                                       \
>               headers_check

-- 
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