[OpenWrt-Devel] [PATCH 1/4] toolchain: add support of nds32 architecture

[John Crispin]

On 11/06/2019 12:30, Nylon Chen wrote:
> This commit provides basic support for the
> Andes 32-bit (nds32) architecture.

Hi,
thanks for the patches, they have not been picked up by anyone and right 
now I am not sure if it makes sense to merge the support, as it requires 
a fpga test board that probably no one apart from you guys has. sorry.
	John

> 
> Signed-off-by: Che-Wei Chuang <cnoize at andestech.com>
> Signed-off-by: Nylon Chen <nylon7 at andestech.com>
> ---
>   include/kernel.mk   |  2 ++
>   include/site/nds32  | 33 +++++++++++++++++++++++++++++++++
>   include/target.mk   |  4 ++++
>   target/Config.in    |  5 +++++
>   toolchain/Config.in |  9 ++++++---
>   5 files changed, 50 insertions(+), 3 deletions(-)
>   create mode 100644 include/site/nds32
> 
> diff --git a/include/kernel.mk b/include/kernel.mk
> index 3195090a0a..d0b5b779b9 100644
> --- a/include/kernel.mk
> +++ b/include/kernel.mk
> @@ -85,6 +85,8 @@ ifneq (,$(findstring uml,$(BOARD)))
>     LINUX_KARCH=um
>   else ifneq (,$(findstring $(ARCH) , aarch64 aarch64_be ))
>     LINUX_KARCH := arm64
> +else ifneq (,$(findstring $(ARCH) , nds32 ))
> +  LINUX_KARCH := nds32
>   else ifneq (,$(findstring $(ARCH) , arceb ))
>     LINUX_KARCH := arc
>   else ifneq (,$(findstring $(ARCH) , armeb ))
> diff --git a/include/site/nds32 b/include/site/nds32
> new file mode 100644
> index 0000000000..b0a0977671
> --- /dev/null
> +++ b/include/site/nds32
> @@ -0,0 +1,33 @@
> +ac_cv_c_littleendian=${ac_cv_c_littleendian=yes}
> +ac_cv_c_bigendian=${ac_cv_c_bigendian=no}
> +
> +ac_cv_sizeof___int64=${ac_cv_sizeof___int64=0}
> +ac_cv_sizeof_bool=${ac_cv_sizeof_bool=1}
> +ac_cv_sizeof_char=${ac_cv_sizeof_char=1}
> +ac_cv_sizeof_char_p=${ac_cv_sizeof_int_p=4}
> +ac_cv_sizeof_double=${ac_cv_sizeof_double=8}
> +ac_cv_sizeof_float=${ac_cv_sizeof_float=4}
> +ac_cv_sizeof_int=${ac_cv_sizeof_int=4}
> +ac_cv_sizeof_int_p=${ac_cv_sizeof_int_p=4}
> +ac_cv_sizeof_long=${ac_cv_sizeof_long=4}
> +ac_cv_sizeof_long_double=${ac_cv_sizeof_long_double=8}
> +ac_cv_sizeof_long_int=${ac_cv_sizeof_long_int=4}
> +ac_cv_sizeof_long_long=${ac_cv_sizeof_long_long=8}
> +ac_cv_sizeof_long_p=${ac_cv_sizeof_long_p=4}
> +ac_cv_sizeof_off_t=${ac_cv_sizeof_off_t=4}
> +ac_cv_sizeof_ptrdiff_t=${glib_cv_sizeof_ptrdiff_t=4}
> +ac_cv_sizeof_short=${ac_cv_sizeof_short=2}
> +ac_cv_sizeof_short_int=${ac_cv_sizeof_short_int=2}
> +ac_cv_sizeof_signed_char=${ac_cv_sizeof_signed_char=1}
> +ac_cv_sizeof_size_t=${ac_cv_sizeof_size_t=4}
> +ac_cv_sizeof_unsigned_char=${ac_cv_sizeof_unsigned_char=1}
> +ac_cv_sizeof_unsigned_short=${ac_cv_sizeof_unsigned_short=2}
> +ac_cv_sizeof_unsigned=${ac_cv_sizeof_unsigned=4}
> +ac_cv_sizeof_unsigned_int=${ac_cv_sizeof_unsigned_int=4}
> +ac_cv_sizeof_unsigned_long=${ac_cv_sizeof_unsigned_long=4}
> +ac_cv_sizeof_unsigned_long_long=${ac_cv_sizeof_unsigned_long_long=8}
> +ac_cv_sizeof_void_p=${ac_cv_sizeof_void_p=4}
> +ac_cv_sizeof_wchar_t=${ac_cv_sizeof_wchar_t=1}
> +
> +ac_cv_func_realloc_0_nonnull=yes
> +ac_cv_func_malloc_0_nonnull=yes
> diff --git a/include/target.mk b/include/target.mk
> index 4f3bd43e6c..75e23f328f 100644
> --- a/include/target.mk
> +++ b/include/target.mk
> @@ -176,6 +176,10 @@ ifeq ($(DUMP),1)
>       CPU_CFLAGS_74kc = -mips32r2 -mtune=74kc
>       CPU_CFLAGS_octeonplus = -march=octeon+ -mabi=64
>     endif
> +  ifeq ($(ARCH),nds32)
> +    CPU_TYPE ?= nds32
> +    CPU_CFLAGS += -march=v3
> +  endif
>     ifeq ($(ARCH),i386)
>       CPU_TYPE ?= pentium
>       CPU_CFLAGS_pentium = -march=pentium-mmx
> diff --git a/target/Config.in b/target/Config.in
> index 3ee23ebf7f..8d6aa8769c 100644
> --- a/target/Config.in
> +++ b/target/Config.in
> @@ -192,6 +192,10 @@ config x86_64
>   	select ARCH_64BIT
>   	bool
>   
> +config nds32
> +	select LITTLE_ENDIAN
> +	bool
> +
>   config ARCH
>   	string
>   	default "aarch64"   if aarch64
> @@ -215,4 +219,5 @@ config ARCH
>   	default "sh4eb"     if sh4eb
>   	default "sparc"     if sparc
>   	default "x86_64"    if x86_64
> +	default "nds32"	    if nds32
>   
> diff --git a/toolchain/Config.in b/toolchain/Config.in
> index 82dddbc209..7cb65e803e 100644
> --- a/toolchain/Config.in
> +++ b/toolchain/Config.in
> @@ -67,6 +67,7 @@ menuconfig EXTERNAL_TOOLCHAIN
>   		default "mipsel-unknown-linux-gnu"   if mipsel
>   		default "powerpc-unknown-linux-gnu"  if powerpc
>   		default "x86_64-unknown-linux-gnu"   if x86_64
> +		default "nds32le-linux"              if nds32
>   
>   	config TOOLCHAIN_PREFIX
>   		string
> @@ -81,6 +82,7 @@ menuconfig EXTERNAL_TOOLCHAIN
>   		default "mipsel-unknown-linux-gnu-"   if mipsel
>   		default "powerpc-unknown-linux-gnu-"  if powerpc
>   		default "x86_64-unknown-linux-gnu-"   if x86_64
> +		default "nds32le-linux-"              if nds32
>   
>   	config TOOLCHAIN_ROOT
>   		string
> @@ -113,11 +115,12 @@ menuconfig EXTERNAL_TOOLCHAIN
>   		config EXTERNAL_TOOLCHAIN_LIBC_USE_UCLIBC
>   			bool "uClibc"
>   			select USE_UCLIBC
> -			depends on !(aarch64 || aarch64_be)
> +			depends on !(aarch64 || aarch64_be || nds32)
>   
>   		config EXTERNAL_TOOLCHAIN_LIBC_USE_MUSL
>   			bool "musl"
>   			select USE_MUSL
> +			depends on !nds32
>   
>   	endchoice
>   
> @@ -251,13 +254,13 @@ choice
>   	config LIBC_USE_UCLIBC
>   		select USE_UCLIBC
>   		bool "Use uClibc"
> -		depends on !(aarch64 || aarch64_be || powerpc64)
> +		depends on !(aarch64 || aarch64_be || powerpc64 || nds32)
>   		depends on BROKEN || !(arm || armeb || i386 || x86_64 || mips || mipsel || mips64 || mips64el || powerpc)
>   
>   	config LIBC_USE_MUSL
>   		select USE_MUSL
>   		bool "Use musl"
> -		depends on !(arc || powerpc64)
> +		depends on !(arc || powerpc64 || nds32)
>   
>   endchoice
>   
> 


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