[Buildroot] [PATCH v2 0/2] Introducing Nios-II architecture

[Buildroot] [PATCH v2 0/2] Introducing Nios-II architecture

[Ezequiel Garcia]

From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>

This is the second version of the series adding basic support for
Altera's Nios-II architecture.
Only basic support added so far, but more patches will hopefully follow.

Changes from v1:

  * Added details about toolchain components version
  * Removed Sourcery version 2013.05-12 and left 2013.05-43 only
  * Excluded internal and crosstool-ng toolchains as they're
    not supported (yet?)

Many thanks to Zylin (www.zylin.com) for supporting this!

Ezequiel Garcia (2):
  nios2: Add new architecture
  toolchain-external: Add Sourcery CodeBench for Nios-II

 arch/Config.in                           | 11 +++++++++++
 arch/Config.in.nios2                     |  5 +++++
 toolchain/Config.in                      |  5 +++--
 toolchain/toolchain-external/Config.in   | 14 ++++++++++++++
 toolchain/toolchain-external/ext-tool.mk |  3 +++
 5 files changed, 36 insertions(+), 2 deletions(-)
 create mode 100644 arch/Config.in.nios2

-- 
1.8.1.5

[Buildroot] [PATCH v2 1/2] nios2: Add new architecture

[Ezequiel Garcia]

From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>

This commit adds very basic support to build for the Nios II
architecture. Toolchain support is still missing and instead
we need to use an external custom toolchain.

Notice that this architecture had been previously removed in
Buildroot 2010.05-rc1 release (as explained in the CHANGES file)
and this commit adds it back.

Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
---
 arch/Config.in       | 11 +++++++++++
 arch/Config.in.nios2 |  5 +++++
 toolchain/Config.in  |  5 +++--
 3 files changed, 19 insertions(+), 2 deletions(-)
 create mode 100644 arch/Config.in.nios2

diff --git a/arch/Config.in b/arch/Config.in
index 0b5b218..2495110 100644
--- a/arch/Config.in
+++ b/arch/Config.in
@@ -124,6 +124,13 @@ config BR2_mips64el
 	  http://www.mips.com/
 	  http://en.wikipedia.org/wiki/MIPS_Technologies
 
+config BR2_nios2
+	bool "Nios II"
+	help
+	  Nios II is a soft core processor from Altera Corporation.
+	  http://www.altera.com/
+	  http://en.wikipedia.org/wiki/Nios_II
+
 config BR2_powerpc
 	bool "PowerPC"
 	help
@@ -305,6 +312,10 @@ if BR2_mips || BR2_mips64 || BR2_mipsel || BR2_mips64el
 source "arch/Config.in.mips"
 endif
 
+if BR2_nios2
+source "arch/Config.in.nios2"
+endif
+
 if BR2_powerpc
 source "arch/Config.in.powerpc"
 endif
diff --git a/arch/Config.in.nios2 b/arch/Config.in.nios2
new file mode 100644
index 0000000..ed63898
--- /dev/null
+++ b/arch/Config.in.nios2
@@ -0,0 +1,5 @@
+config BR2_ARCH
+	default "nios2"
+
+config BR2_ENDIAN
+	default "LITTLE"
diff --git a/toolchain/Config.in b/toolchain/Config.in
index 53d2573..9d1e68f 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -25,7 +25,7 @@ choice
 
 config BR2_TOOLCHAIN_BUILDROOT
 	bool "Buildroot toolchain"
-	depends on !BR2_microblaze && !BR2_aarch64
+	depends on !BR2_microblaze && !BR2_aarch64 && !BR2_nios2
 	select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
 
 config BR2_TOOLCHAIN_EXTERNAL
@@ -38,7 +38,8 @@ config BR2_TOOLCHAIN_EXTERNAL
 config BR2_TOOLCHAIN_CTNG
 	bool "Crosstool-NG toolchain"
 	depends on BR2_DEPRECATED
-	depends on !BR2_microblaze && !BR2_aarch64 && !BR2_xtensa && !BR2_arc
+	depends on !BR2_microblaze && !BR2_aarch64 && !BR2_xtensa && \
+		   !BR2_arc && !BR2_nios2
 	select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
 	help
 	  Say 'y' if you want to generate the toolchain with crosstool-NG
-- 
1.8.1.5

[Buildroot] [PATCH v2 2/2] toolchain-external: Add Sourcery CodeBench for Nios-II

[Ezequiel Garcia]

From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>

This commit adds the pre-built Sourcery CodeBench toolchains
currently available for the Nios-II architecture.

Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
---
 toolchain/toolchain-external/Config.in   | 14 ++++++++++++++
 toolchain/toolchain-external/ext-tool.mk |  3 +++
 2 files changed, 17 insertions(+)

diff --git a/toolchain/toolchain-external/Config.in b/toolchain/toolchain-external/Config.in
index ad1f203..0abf8e3 100644
--- a/toolchain/toolchain-external/Config.in
+++ b/toolchain/toolchain-external/Config.in
@@ -402,6 +402,19 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201203
 comment "Sourcery CodeBench toolchains are only available for MIPS/MIPS64 o32 and n64"
 	depends on BR2_MIPS_NABI32
 
+config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305_43
+	bool "Sourcery CodeBench Nios-II 2013.05-43"
+	depends on BR2_nios2
+	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_HOSTARCH_NEEDS_IA32_LIBS
+	help
+	  Sourcery CodeBench toolchain for the Nios-II architecture,
+	  from Mentor Graphics. It uses gcc 4.7.3, binutils 2.23.52,
+	  glibc 2.17, gdb 7.4.50 and kernel headers 3.7.0.
+
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201103
 	bool "Sourcery CodeBench PowerPC 2011.03"
 	depends on BR2_powerpc
@@ -818,6 +831,7 @@ config BR2_TOOLCHAIN_EXTERNAL_PREFIX
 	default "mips-linux-gnu"         if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201203
 	default "mips-linux-gnu"         if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201209
 	default "mips-linux-gnu"         if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201305
+	default "nios2-linux-gnu"        if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305_43
 	default "powerpc-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201009
 	default "powerpc-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201103
 	default "sh-linux-gnu"           if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH201103
diff --git a/toolchain/toolchain-external/ext-tool.mk b/toolchain/toolchain-external/ext-tool.mk
index 01be85c..fd6bfea 100644
--- a/toolchain/toolchain-external/ext-tool.mk
+++ b/toolchain/toolchain-external/ext-tool.mk
@@ -247,6 +247,9 @@ TOOLCHAIN_EXTERNAL_SOURCE = mips-2012.09-99-mips-linux-gnu-i686-pc-linux-gnu.tar
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201305),y)
 TOOLCHAIN_EXTERNAL_SITE = http://sourcery.mentor.com/public/gnu_toolchain/mips-linux-gnu/
 TOOLCHAIN_EXTERNAL_SOURCE = mips-2013.05-36-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2
+else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305_43),y)
+TOOLCHAIN_EXTERNAL_SITE = http://sourcery.mentor.com/public/gnu_toolchain/nios2-linux-gnu/
+TOOLCHAIN_EXTERNAL_SOURCE = sourceryg++-2013.05-43-nios2-linux-gnu-i686-pc-linux-gnu.tar.bz2
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201009),y)
 TOOLCHAIN_EXTERNAL_SITE = http://sourcery.mentor.com/public/gnu_toolchain/powerpc-linux-gnu/
 TOOLCHAIN_EXTERNAL_SOURCE = freescale-2010.09-55-powerpc-linux-gnu-i686-pc-linux-gnu.tar.bz2
-- 
1.8.1.5

[Buildroot] [PATCH v2 1/2] nios2: Add new architecture

[Thomas Petazzoni]

Dear Ezequiel Garcia,

On Wed, 21 Aug 2013 16:58:47 -0300, Ezequiel Garcia wrote:
> From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> 
> This commit adds very basic support to build for the Nios II
> architecture. Toolchain support is still missing and instead
> we need to use an external custom toolchain.
> 
> Notice that this architecture had been previously removed in
> Buildroot 2010.05-rc1 release (as explained in the CHANGES file)
> and this commit adds it back.
> 
> Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>

Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] [PATCH v2 2/2] toolchain-external: Add Sourcery CodeBench for Nios-II

[Thomas Petazzoni]

Dear Ezequiel Garcia,

On Wed, 21 Aug 2013 16:58:48 -0300, Ezequiel Garcia wrote:
> From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> 
> This commit adds the pre-built Sourcery CodeBench toolchains
> currently available for the Nios-II architecture.
> 
> Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>

I have a comment below, but I guess it can easily be fixed by Peter
when committing, unless Ezequiel wants to send an updated version to
fix it. Once it is fixed, this patch has my:

Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

> +config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305_43

You should remove the _43 suffix here.

> +	bool "Sourcery CodeBench Nios-II 2013.05-43"

and here the -43 suffix.

> +	depends on BR2_nios2
> +	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
> +	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
> +	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
> +	select BR2_INSTALL_LIBSTDCPP
> +	select BR2_HOSTARCH_NEEDS_IA32_LIBS
> +	help
> +	  Sourcery CodeBench toolchain for the Nios-II architecture,
> +	  from Mentor Graphics. It uses gcc 4.7.3, binutils 2.23.52,
> +	  glibc 2.17, gdb 7.4.50 and kernel headers 3.7.0.
> +
>  config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201103
>  	bool "Sourcery CodeBench PowerPC 2011.03"
>  	depends on BR2_powerpc
> @@ -818,6 +831,7 @@ config BR2_TOOLCHAIN_EXTERNAL_PREFIX
>  	default "mips-linux-gnu"         if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201203
>  	default "mips-linux-gnu"         if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201209
>  	default "mips-linux-gnu"         if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201305
> +	default "nios2-linux-gnu"        if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305_43

Ditto.

>  	default "powerpc-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201009
>  	default "powerpc-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201103
>  	default "sh-linux-gnu"           if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH201103
> diff --git a/toolchain/toolchain-external/ext-tool.mk b/toolchain/toolchain-external/ext-tool.mk
> index 01be85c..fd6bfea 100644
> --- a/toolchain/toolchain-external/ext-tool.mk
> +++ b/toolchain/toolchain-external/ext-tool.mk
> @@ -247,6 +247,9 @@ TOOLCHAIN_EXTERNAL_SOURCE = mips-2012.09-99-mips-linux-gnu-i686-pc-linux-gnu.tar
>  else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201305),y)
>  TOOLCHAIN_EXTERNAL_SITE = http://sourcery.mentor.com/public/gnu_toolchain/mips-linux-gnu/
>  TOOLCHAIN_EXTERNAL_SOURCE = mips-2013.05-36-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2
> +else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305_43),y)

Same thing.

> +TOOLCHAIN_EXTERNAL_SITE = http://sourcery.mentor.com/public/gnu_toolchain/nios2-linux-gnu/
> +TOOLCHAIN_EXTERNAL_SOURCE = sourceryg++-2013.05-43-nios2-linux-gnu-i686-pc-linux-gnu.tar.bz2
>  else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201009),y)
>  TOOLCHAIN_EXTERNAL_SITE = http://sourcery.mentor.com/public/gnu_toolchain/powerpc-linux-gnu/
>  TOOLCHAIN_EXTERNAL_SOURCE = freescale-2010.09-55-powerpc-linux-gnu-i686-pc-linux-gnu.tar.bz2

This allows to be consistent with what we do for the other
external toolchains. The Config.in options designates the version of
the toolchain without the patch level.

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] [PATCH v2 0/2] Introducing Nios-II architecture

[Thomas Petazzoni]

Dear Ezequiel Garcia,

On Wed, 21 Aug 2013 16:58:46 -0300, Ezequiel Garcia wrote:
> From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> 
> This is the second version of the series adding basic support for
> Altera's Nios-II architecture.
> Only basic support added so far, but more patches will hopefully follow.

Nice!

Once this series is committed, I'll add NIOS-II to the autobuilders.
Are you willing to look at the resulting package build failures?

What's nice is that the toolchain is modern: gcc 4.7, glibc 2.17,
binutils 2.23. Hopefully, this will mean that the number of issues
should not be too huge.

Thanks,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] [PATCH v2 2/2] toolchain-external: Add Sourcery CodeBench for Nios-II

[Ezequiel García]

On 28 August 2013 13:15, Thomas Petazzoni
<thomas.petazzoni@free-electrons.com> wrote:
>
> Dear Ezequiel Garcia,
>
> On Wed, 21 Aug 2013 16:58:48 -0300, Ezequiel Garcia wrote:
> > From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> >
> > This commit adds the pre-built Sourcery CodeBench toolchains
> > currently available for the Nios-II architecture.
> >
> > Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
>
> I have a comment below, but I guess it can easily be fixed by Peter
> when committing, unless Ezequiel wants to send an updated version to
> fix it. Once it is fixed, this patch has my:
>
> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
>

Yes, I'll fix and re-send.

Thanks,
-- 
Ezequiel Garc?a, VanguardiaSur
www.vanguardiasur.com.ar

[Buildroot] [PATCH v2 0/2] Introducing Nios-II architecture

[Ezequiel García]

On 28 August 2013 13:18, Thomas Petazzoni
<thomas.petazzoni@free-electrons.com> wrote:
> Dear Ezequiel Garcia,
>
> On Wed, 21 Aug 2013 16:58:46 -0300, Ezequiel Garcia wrote:
>> From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
>>
>> This is the second version of the series adding basic support for
>> Altera's Nios-II architecture.
>> Only basic support added so far, but more patches will hopefully follow.
>
> Nice!
>
> Once this series is committed, I'll add NIOS-II to the autobuilders.
> Are you willing to look at the resulting package build failures?
>

Sure. However, not all of them will be easy to fix, I'm afraid.

I'm currently *trying* to port strace, which is probably one of the most
important package lacks we currently have.

> What's nice is that the toolchain is modern: gcc 4.7, glibc 2.17,
> binutils 2.23. Hopefully, this will mean that the number of issues
> should not be too huge.
>

Indeed. I'm trying to follow the toolchain mainline process so
I hope we'll be able to support the internal toolchain soon!
-- 
Ezequiel Garc?a, VanguardiaSur
www.vanguardiasur.com.ar

[Buildroot] [PATCH v2 0/2] Introducing Nios-II architecture

[Thomas Petazzoni]

Hello

On Wed, 28 Aug 2013 18:18:18 +0200, Thomas Petazzoni wrote:
> Dear Ezequiel Garcia,
> 
> On Wed, 21 Aug 2013 16:58:46 -0300, Ezequiel Garcia wrote:
> > From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> > 
> > This is the second version of the series adding basic support for
> > Altera's Nios-II architecture.
> > Only basic support added so far, but more patches will hopefully follow.
> 
> Nice!
> 
> Once this series is committed, I'll add NIOS-II to the autobuilders.
> Are you willing to look at the resulting package build failures?

I had a quick look, and unfortunately, there is no support for NIOS-II
in libffi. This means that anything that uses libglib or python cannot
be built for NIOS-II. This is a bit annoying as adding a 'depends
on !BR2_nios2' on all reverse dependencies of libglib is a big pain.

Unfortunately, a quick google search doesn't even show the start of an
effort to add NIOS-II support to libffi, so I guess we'll have to live
with that.

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com