[Buildroot] [PATCH v4 0/2] Add prebuilt nds32 toolchain, ae3xx board

[Buildroot] [PATCH v4 0/2] Add prebuilt nds32 toolchain, ae3xx board

[Nylon Chen]

v4:
    1) removed BR2_ANDES_NDS32_FPU option
    2) removed test the Andes nds32 toolchain patch

v3:
    1) DEVELOPERS file must be alphabetic ordering of developer names
    2) removed BR2_TOOLCHAIN_HAS_NATIVE_RPC option
    3) removed package modifications because we do not support building nds32 toolchain by Buildroot
    4) replace BR2_LINUX_KERNEL_CUSTOM_VERSION and BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE with BR2_LINUX_KERNEL_CUSTOM_VERSION and BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE
    5) add BR2_ANDES_NDS32_FPU option

Nylon Chen (2):
  arch: add support for Andes 32-bit(nds32)
  configs/andes_nds32_ae3xx: new defconfig

 DEVELOPERS                                    |  5 ++
 arch/Config.in                                | 12 +++++
 arch/Config.in.nds32                          | 11 +++++
 board/andes/ae3xx/ae3xx.fragment              |  1 +
 ...0001-nds32-Fix-boot-messages-garbled.patch | 28 +++++++++++
 board/andes/readme.txt                        | 49 +++++++++++++++++++
 configs/andes_ae3xx_defconfig                 | 14 ++++++
 7 files changed, 120 insertions(+)
 create mode 100644 arch/Config.in.nds32
 create mode 100644 board/andes/ae3xx/ae3xx.fragment
 create mode 100644 board/andes/patches/linux/0001-nds32-Fix-boot-messages-garbled.patch
 create mode 100644 board/andes/readme.txt
 create mode 100644 configs/andes_ae3xx_defconfig

-- 
2.18.0

[Buildroot] [PATCH v4 1/2] arch: add support for Andes 32-bit(nds32)

[Nylon Chen]

This commit provides basic support for the Andes 32-bit(nds32) architecture.

Signed-off-by: Che-Wei Chuang <cnoize@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
Signed-off-by: Nylon Chen <nylon7@andestech.com>
---
 DEVELOPERS           |  3 +++
 arch/Config.in       | 12 ++++++++++++
 arch/Config.in.nds32 | 11 +++++++++++
 3 files changed, 26 insertions(+)
 create mode 100644 arch/Config.in.nds32

diff --git a/DEVELOPERS b/DEVELOPERS
index 1001d55815..ef4ff81ab1 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -1655,6 +1655,9 @@ F:	package/trousers/
 N:	Norbert Lange <nolange79@gmail.com>
 F:	package/tcf-agent/
 
+N:	Nylon Chen <nylon7@andestech.com>
+F:	arch/Config.in.nds32
+
 N:	Olaf Rempel <razzor@kopf-tisch.de>
 F:	package/ctorrent/
 
diff --git a/arch/Config.in b/arch/Config.in
index f50760a0cf..d82803c828 100644
--- a/arch/Config.in
+++ b/arch/Config.in
@@ -154,6 +154,14 @@ config BR2_mips64el
 	  http://www.mips.com/
 	  http://en.wikipedia.org/wiki/MIPS_Technologies
 
+config BR2_nds32
+	bool "nds32"
+	select BR2_ARCH_HAS_NO_TOOLCHAIN_BUILDROOT
+	select BR2_ARCH_HAS_MMU_MANDATORY
+	help
+	  nds32 is a 32-bit architecture developed by Andes Technology.
+	  https://en.wikipedia.org/wiki/Andes_Technology
+
 config BR2_nios2
 	bool "Nios II"
 	select BR2_ARCH_HAS_MMU_MANDATORY
@@ -419,6 +427,10 @@ if BR2_mips || BR2_mips64 || BR2_mipsel || BR2_mips64el
 source "arch/Config.in.mips"
 endif
 
+if BR2_nds32
+source "arch/Config.in.nds32"
+endif
+
 if BR2_nios2
 source "arch/Config.in.nios2"
 endif
diff --git a/arch/Config.in.nds32 b/arch/Config.in.nds32
new file mode 100644
index 0000000000..9c5db20e6f
--- /dev/null
+++ b/arch/Config.in.nds32
@@ -0,0 +1,11 @@
+config BR2_ARCH
+	default "nds32"
+
+config BR2_GCC_TARGET_ARCH
+	default "v3"
+
+config BR2_ENDIAN
+	default "LITTLE"
+
+config BR2_READELF_ARCH_NAME
+	default "Andes Technology compact code size embedded RISC processor family"
-- 
2.18.0

[Buildroot] [PATCH v4 2/2] configs/andes_nds32_ae3xx: new defconfig

[Nylon Chen]

Add Andes 32-bit defconfig for AE3XX platform.

Signed-off-by: Che-Wei Chuang <cnoize@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
Signed-off-by: Nylon Chen <nylon7@andestech.com>
---
 DEVELOPERS                                    |  2 +
 board/andes/ae3xx/ae3xx.fragment              |  1 +
 ...0001-nds32-Fix-boot-messages-garbled.patch | 28 +++++++++++
 board/andes/readme.txt                        | 49 +++++++++++++++++++
 configs/andes_ae3xx_defconfig                 | 14 ++++++
 5 files changed, 94 insertions(+)
 create mode 100644 board/andes/ae3xx/ae3xx.fragment
 create mode 100644 board/andes/patches/linux/0001-nds32-Fix-boot-messages-garbled.patch
 create mode 100644 board/andes/readme.txt
 create mode 100644 configs/andes_ae3xx_defconfig

diff --git a/DEVELOPERS b/DEVELOPERS
index ef4ff81ab1..e8a70b42fa 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -1657,6 +1657,8 @@ F:	package/tcf-agent/
 
 N:	Nylon Chen <nylon7@andestech.com>
 F:	arch/Config.in.nds32
+F:	board/andes
+F:	configs/andes_ae3xx_defconfig
 
 N:	Olaf Rempel <razzor@kopf-tisch.de>
 F:	package/ctorrent/
diff --git a/board/andes/ae3xx/ae3xx.fragment b/board/andes/ae3xx/ae3xx.fragment
new file mode 100644
index 0000000000..3b13d10740
--- /dev/null
+++ b/board/andes/ae3xx/ae3xx.fragment
@@ -0,0 +1 @@
+CONFIG_NDS32_BUILTIN_DTB="ae3xx"
diff --git a/board/andes/patches/linux/0001-nds32-Fix-boot-messages-garbled.patch b/board/andes/patches/linux/0001-nds32-Fix-boot-messages-garbled.patch
new file mode 100644
index 0000000000..adb60937bd
--- /dev/null
+++ b/board/andes/patches/linux/0001-nds32-Fix-boot-messages-garbled.patch
@@ -0,0 +1,28 @@
+From 90d52d180dcc5d1300dc352ca709eb6453894143 Mon Sep 17 00:00:00 2001
+From: Nylon Chen <nylon7@andestech.com>
+Date: Wed, 28 Nov 2018 16:26:46 +0800
+Subject: [PATCH] nds32: Fix boot messages garbled
+
+In order to display uart correctly we have to pass the correct setting of uart to kernel by bootarg.
+This patch will provide such settings to set the correct uart baud rate.
+
+Signed-off-by: Nylon Chen <nylon7@andestech.com>
+---
+ arch/nds32/boot/dts/ae3xx.dts | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/arch/nds32/boot/dts/ae3xx.dts b/arch/nds32/boot/dts/ae3xx.dts
+index bb39749a6673..aefe2090926a 100644
+--- a/arch/nds32/boot/dts/ae3xx.dts
++++ b/arch/nds32/boot/dts/ae3xx.dts
+@@ -6,6 +6,7 @@
+ 	interrupt-parent = <&intc>;
+ 
+ 	chosen {
++		bootargs = "memblock=debug earlycon console=ttyS0,38400n8 debug loglevel=7";
+ 		stdout-path = &serial0;
+ 	};
+ 
+-- 
+2.18.0
+
diff --git a/board/andes/readme.txt b/board/andes/readme.txt
new file mode 100644
index 0000000000..0f95c65549
--- /dev/null
+++ b/board/andes/readme.txt
@@ -0,0 +1,49 @@
+Intro
+=====
+
+Andestech(nds32) AE3XX Platform
+
+The AE3XX prototype demonstrates the AE3XX example platform on the FPGA. 
+It is composed of one Andestech(nds32) processor and AE3XX.
+
+How to build it
+===============
+
+Configure Buildroot
+-------------------
+
+The andes_ae3xx_defconfig configuration is a sample configuration with
+all that is required to bring the FPGA Development Board:
+
+  $ make andes_ae3xx_defconfig
+
+Build everything
+----------------
+Note: you will need to have access to the network, since Buildroot will
+download the packages' sources.
+
+  $ make
+
+Result of the build
+-------------------
+
+After building, you should obtain this tree:
+
+output/images/
+    +-- vmlinux
+    +-- rootfs.cpio
+    +-- rootfs.tar
+
+How to run it
+=============
+
+Run
+---
+
+  Setup the Console with the rate 38400/8-N-1.
+
+  $ cd output/images
+  $ ../host/bin/nds32le-linux-gdb vmlinux
+  $ target remote [your host]
+  $ lo
+  $ c 
diff --git a/configs/andes_ae3xx_defconfig b/configs/andes_ae3xx_defconfig
new file mode 100644
index 0000000000..250e3ee157
--- /dev/null
+++ b/configs/andes_ae3xx_defconfig
@@ -0,0 +1,14 @@
+BR2_nds32=y
+BR2_GLOBAL_PATCH_DIR="board/andes/patches/"
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="https://github.com/vincentzwc/prebuilt-nds32-toolchain/releases/download/20180521/nds32le-linux-glibc-v3-upstream.tar.gz"
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="nds32le-linux"
+BR2_TOOLCHAIN_EXTERNAL_GCC_8=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_17=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17"
+BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
+BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="board/andes/ae3xx/ae3xx.fragment"
+BR2_TARGET_ROOTFS_INITRAMFS=y
-- 
2.18.0

[Buildroot] [PATCH v4 1/2] arch: add support for Andes 32-bit(nds32)

[Yann E. MORIN]

Nylon, All,

On 2019-04-02 15:23 +0800, Nylon Chen spake thusly:
> This commit provides basic support for the Andes 32-bit(nds32) architecture.
> 
> Signed-off-by: Che-Wei Chuang <cnoize@andestech.com>
> Signed-off-by: Greentime Hu <greentime@andestech.com>
> Signed-off-by: Nylon Chen <nylon7@andestech.com>

Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

Regards,
Yann E. MORIN.

> ---
>  DEVELOPERS           |  3 +++
>  arch/Config.in       | 12 ++++++++++++
>  arch/Config.in.nds32 | 11 +++++++++++
>  3 files changed, 26 insertions(+)
>  create mode 100644 arch/Config.in.nds32
> 
> diff --git a/DEVELOPERS b/DEVELOPERS
> index 1001d55815..ef4ff81ab1 100644
> --- a/DEVELOPERS
> +++ b/DEVELOPERS
> @@ -1655,6 +1655,9 @@ F:	package/trousers/
>  N:	Norbert Lange <nolange79@gmail.com>
>  F:	package/tcf-agent/
>  
> +N:	Nylon Chen <nylon7@andestech.com>
> +F:	arch/Config.in.nds32
> +
>  N:	Olaf Rempel <razzor@kopf-tisch.de>
>  F:	package/ctorrent/
>  
> diff --git a/arch/Config.in b/arch/Config.in
> index f50760a0cf..d82803c828 100644
> --- a/arch/Config.in
> +++ b/arch/Config.in
> @@ -154,6 +154,14 @@ config BR2_mips64el
>  	  http://www.mips.com/
>  	  http://en.wikipedia.org/wiki/MIPS_Technologies
>  
> +config BR2_nds32
> +	bool "nds32"
> +	select BR2_ARCH_HAS_NO_TOOLCHAIN_BUILDROOT
> +	select BR2_ARCH_HAS_MMU_MANDATORY
> +	help
> +	  nds32 is a 32-bit architecture developed by Andes Technology.
> +	  https://en.wikipedia.org/wiki/Andes_Technology
> +
>  config BR2_nios2
>  	bool "Nios II"
>  	select BR2_ARCH_HAS_MMU_MANDATORY
> @@ -419,6 +427,10 @@ if BR2_mips || BR2_mips64 || BR2_mipsel || BR2_mips64el
>  source "arch/Config.in.mips"
>  endif
>  
> +if BR2_nds32
> +source "arch/Config.in.nds32"
> +endif
> +
>  if BR2_nios2
>  source "arch/Config.in.nios2"
>  endif
> diff --git a/arch/Config.in.nds32 b/arch/Config.in.nds32
> new file mode 100644
> index 0000000000..9c5db20e6f
> --- /dev/null
> +++ b/arch/Config.in.nds32
> @@ -0,0 +1,11 @@
> +config BR2_ARCH
> +	default "nds32"
> +
> +config BR2_GCC_TARGET_ARCH
> +	default "v3"
> +
> +config BR2_ENDIAN
> +	default "LITTLE"
> +
> +config BR2_READELF_ARCH_NAME
> +	default "Andes Technology compact code size embedded RISC processor family"
> -- 
> 2.18.0
> 

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 561 099 427 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

[Buildroot] [PATCH v4 2/2] configs/andes_nds32_ae3xx: new defconfig

[Yann E. MORIN]

Nylon, All,

On 2019-04-02 15:23 +0800, Nylon Chen spake thusly:
> Add Andes 32-bit defconfig for AE3XX platform.
> 
> Signed-off-by: Che-Wei Chuang <cnoize@andestech.com>
> Signed-off-by: Greentime Hu <greentime@andestech.com>
> Signed-off-by: Nylon Chen <nylon7@andestech.com>

Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

Regards,
Yann E. MORIN.

> ---
>  DEVELOPERS                                    |  2 +
>  board/andes/ae3xx/ae3xx.fragment              |  1 +
>  ...0001-nds32-Fix-boot-messages-garbled.patch | 28 +++++++++++
>  board/andes/readme.txt                        | 49 +++++++++++++++++++
>  configs/andes_ae3xx_defconfig                 | 14 ++++++
>  5 files changed, 94 insertions(+)
>  create mode 100644 board/andes/ae3xx/ae3xx.fragment
>  create mode 100644 board/andes/patches/linux/0001-nds32-Fix-boot-messages-garbled.patch
>  create mode 100644 board/andes/readme.txt
>  create mode 100644 configs/andes_ae3xx_defconfig
> 
> diff --git a/DEVELOPERS b/DEVELOPERS
> index ef4ff81ab1..e8a70b42fa 100644
> --- a/DEVELOPERS
> +++ b/DEVELOPERS
> @@ -1657,6 +1657,8 @@ F:	package/tcf-agent/
>  
>  N:	Nylon Chen <nylon7@andestech.com>
>  F:	arch/Config.in.nds32
> +F:	board/andes
> +F:	configs/andes_ae3xx_defconfig
>  
>  N:	Olaf Rempel <razzor@kopf-tisch.de>
>  F:	package/ctorrent/
> diff --git a/board/andes/ae3xx/ae3xx.fragment b/board/andes/ae3xx/ae3xx.fragment
> new file mode 100644
> index 0000000000..3b13d10740
> --- /dev/null
> +++ b/board/andes/ae3xx/ae3xx.fragment
> @@ -0,0 +1 @@
> +CONFIG_NDS32_BUILTIN_DTB="ae3xx"
> diff --git a/board/andes/patches/linux/0001-nds32-Fix-boot-messages-garbled.patch b/board/andes/patches/linux/0001-nds32-Fix-boot-messages-garbled.patch
> new file mode 100644
> index 0000000000..adb60937bd
> --- /dev/null
> +++ b/board/andes/patches/linux/0001-nds32-Fix-boot-messages-garbled.patch
> @@ -0,0 +1,28 @@
> +From 90d52d180dcc5d1300dc352ca709eb6453894143 Mon Sep 17 00:00:00 2001
> +From: Nylon Chen <nylon7@andestech.com>
> +Date: Wed, 28 Nov 2018 16:26:46 +0800
> +Subject: [PATCH] nds32: Fix boot messages garbled
> +
> +In order to display uart correctly we have to pass the correct setting of uart to kernel by bootarg.
> +This patch will provide such settings to set the correct uart baud rate.
> +
> +Signed-off-by: Nylon Chen <nylon7@andestech.com>
> +---
> + arch/nds32/boot/dts/ae3xx.dts | 1 +
> + 1 file changed, 1 insertion(+)
> +
> +diff --git a/arch/nds32/boot/dts/ae3xx.dts b/arch/nds32/boot/dts/ae3xx.dts
> +index bb39749a6673..aefe2090926a 100644
> +--- a/arch/nds32/boot/dts/ae3xx.dts
> ++++ b/arch/nds32/boot/dts/ae3xx.dts
> +@@ -6,6 +6,7 @@
> + 	interrupt-parent = <&intc>;
> + 
> + 	chosen {
> ++		bootargs = "memblock=debug earlycon console=ttyS0,38400n8 debug loglevel=7";
> + 		stdout-path = &serial0;
> + 	};
> + 
> +-- 
> +2.18.0
> +
> diff --git a/board/andes/readme.txt b/board/andes/readme.txt
> new file mode 100644
> index 0000000000..0f95c65549
> --- /dev/null
> +++ b/board/andes/readme.txt
> @@ -0,0 +1,49 @@
> +Intro
> +=====
> +
> +Andestech(nds32) AE3XX Platform
> +
> +The AE3XX prototype demonstrates the AE3XX example platform on the FPGA. 
> +It is composed of one Andestech(nds32) processor and AE3XX.
> +
> +How to build it
> +===============
> +
> +Configure Buildroot
> +-------------------
> +
> +The andes_ae3xx_defconfig configuration is a sample configuration with
> +all that is required to bring the FPGA Development Board:
> +
> +  $ make andes_ae3xx_defconfig
> +
> +Build everything
> +----------------
> +Note: you will need to have access to the network, since Buildroot will
> +download the packages' sources.
> +
> +  $ make
> +
> +Result of the build
> +-------------------
> +
> +After building, you should obtain this tree:
> +
> +output/images/
> +    +-- vmlinux
> +    +-- rootfs.cpio
> +    +-- rootfs.tar
> +
> +How to run it
> +=============
> +
> +Run
> +---
> +
> +  Setup the Console with the rate 38400/8-N-1.
> +
> +  $ cd output/images
> +  $ ../host/bin/nds32le-linux-gdb vmlinux
> +  $ target remote [your host]
> +  $ lo
> +  $ c 
> diff --git a/configs/andes_ae3xx_defconfig b/configs/andes_ae3xx_defconfig
> new file mode 100644
> index 0000000000..250e3ee157
> --- /dev/null
> +++ b/configs/andes_ae3xx_defconfig
> @@ -0,0 +1,14 @@
> +BR2_nds32=y
> +BR2_GLOBAL_PATCH_DIR="board/andes/patches/"
> +BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
> +BR2_TOOLCHAIN_EXTERNAL_URL="https://github.com/vincentzwc/prebuilt-nds32-toolchain/releases/download/20180521/nds32le-linux-glibc-v3-upstream.tar.gz"
> +BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="nds32le-linux"
> +BR2_TOOLCHAIN_EXTERNAL_GCC_8=y
> +BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_17=y
> +BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
> +BR2_LINUX_KERNEL=y
> +BR2_LINUX_KERNEL_CUSTOM_VERSION=y
> +BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17"
> +BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
> +BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="board/andes/ae3xx/ae3xx.fragment"
> +BR2_TARGET_ROOTFS_INITRAMFS=y
> -- 
> 2.18.0
> 

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 561 099 427 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

[Buildroot] [PATCH v4 1/2] arch: add support for Andes 32-bit(nds32)

[Thomas Petazzoni]

Hello Nylon,

Thanks for this contribution!

On Tue, 2 Apr 2019 15:23:39 +0800
Nylon Chen <nylon7@andestech.com> wrote:

> This commit provides basic support for the Andes 32-bit(nds32) architecture.
> 
> Signed-off-by: Che-Wei Chuang <cnoize@andestech.com>
> Signed-off-by: Greentime Hu <greentime@andestech.com>
> Signed-off-by: Nylon Chen <nylon7@andestech.com>

If we are adding a new architecture, we will need to test it in our
autobuilders (http://autobuild.buildroot.org). Are you ready to spend
some time to look at the build failures, and fix the ones that are
related to the nds32 architecture ?

To make such testing happen, we will need to add a toolchain
configuration in support/config-fragments/autobuild/, and add it in
support/config-fragments/autobuild/toolchain-configs.csv.

This toolchain configuration can directly point to the pre-built
toolchain you are using in PATCH 2/2.

Or, perhaps better, this pre-built toolchain can be added as a proper
package in toolchain/toolchain-external/, and then both the defconfig
and the autobuilder configuration can use it.

What do you think ?

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

[Buildroot] [PATCH v4 1/2] arch: add support for Andes 32-bit(nds32)

[Nylon Chen]

On Wed, Apr 03, 2019 at 03:31:14PM +0800, Thomas Petazzoni wrote:
Hello Thomas, all
> Hello Nylon,
> 
> Thanks for this contribution!
> 
> On Tue, 2 Apr 2019 15:23:39 +0800
> Nylon Chen <nylon7@andestech.com> wrote:
> 
> > This commit provides basic support for the Andes 32-bit(nds32) architecture.
> > 
> > Signed-off-by: Che-Wei Chuang <cnoize@andestech.com>
> > Signed-off-by: Greentime Hu <greentime@andestech.com>
> > Signed-off-by: Nylon Chen <nylon7@andestech.com>
> 
> If we are adding a new architecture, we will need to test it in our
> autobuilders (http://autobuild.buildroot.org). Are you ready to spend
> some time to look at the build failures, and fix the ones that are
> related to the nds32 architecture ?
> 
no problem, I'll help as mush as i can
> To make such testing happen, we will need to add a toolchain
> configuration in support/config-fragments/autobuild/, and add it in
> support/config-fragments/autobuild/toolchain-configs.csv.
> 
> This toolchain configuration can directly point to the pre-built
> toolchain you are using in PATCH 2/2.
> 
> Or, perhaps better, this pre-built toolchain can be added as a proper
> package in toolchain/toolchain-external/, and then both the defconfig
> and the autobuilder configuration can use it.
> 
> What do you think ?
>
Thank you for your comment.
 
We prefer add toolchain/toolchain-external/toolchain-external-andes-nds32....

So we will submit these items in the next patch(v5).

1.add toolchain/toolchain-external/toolchain-external-andes-nds32
							+-- Config.in
							+-- Config.in.options
							+-- toolchain-external-andes-nds32.hash
							+-- toolchain-external-andes-nds32.mk
2.add support/config-fragments/autobuild
				+--toolchain-configs.csv
				+--andes-nds32.config
> Best regards,
> 
> Thomas
> -- 
> Thomas Petazzoni, CTO, Bootlin
> Embedded Linux and Kernel engineering
> https://bootlin.com

[Buildroot] [PATCH v4 1/2] arch: add support for Andes 32-bit(nds32)

[Thomas Petazzoni]

Hello,

On Tue, 9 Apr 2019 17:26:56 +0800
Nylon Chen <nylon7@andestech.com> wrote:

> We prefer add toolchain/toolchain-external/toolchain-external-andes-nds32....
> 
> So we will submit these items in the next patch(v5).
> 
> 1.add toolchain/toolchain-external/toolchain-external-andes-nds32
> 							+-- Config.in
> 							+-- Config.in.options
> 							+-- toolchain-external-andes-nds32.hash
> 							+-- toolchain-external-andes-nds32.mk
> 2.add support/config-fragments/autobuild
> 				+--toolchain-configs.csv
> 				+--andes-nds32.config

Seems perfect!

Looking forward to your v5.

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com