Support new platform "Andestech" Platform

[Thomas YS Liu]

Hi All


Patches are us following


---------- 轉寄的郵件 ----------
寄件者： <address@hidden>
日期： 2009年7月1日下午3:59
主旨： Andes application porting guide


 *Hi, all:* * *

Share you with the experiences in open source applications porting for Andes
platform.

* *

** Environment settings for Andes Toolchain*



# Andes toolchain setting

export ANDESIGHT_ROOT=/home/path/toolchains/nds32-elf-n1213-43u1h

export PATH=$ANDESIGHT_ROOT/bin:$PATH



# PREFIX folder

export PREFIX=/my/path/nds32



export CROSS_COMPILE="nds32le-linux-"

which ${CROSS_COMPILE}gcc &> /dev/null || export CROSS_COMPILE="nds32-elf-"



export HOST=${CROSS_COMPILE%-}

export BUILD="i686-linux"

export TARGET=${CROSS_COMPILE%-}



# Cross Toolchain

export BUILD_CC=gcc

export CC="${TARGET}-gcc"

export CXX="${TARGET}-g++"

export AR="${TARGET}-ar"

export AS="${TARGET}-as"

export RANLIB="${TARGET}-ranlib"

export LD="${TARGET}-ld"

export STRIP="${TARGET}-strip"



# Cross Compilation FLAGS (-EL is for little endian)

export NDS32_GCC_CFLAGS=-EL

#export CFLAGS="-EL -I$PREFIX/include"

#export CFLAGS="-EL -I$PREFIX/include -O2"

export CFLAGS="-EL -I$PREFIX/include -fomit-frame-pointer -funroll-loops
-O3"

# With Static Linking

#export LDFLAGS="-EL -static -L$PREFIX/lib"

With Shared Linking

export LDFLAGS="-EL -L$PREFIX/lib"

export ASFLAGS=-EL

export CXXFLAGS=-EL





note: The prefix of Andes toolchain is* nds32-elf* in AndeSight v1.3.x, but
we will modify the prefix to nds32le-linux since Andesight v1.3.3.



* Open Source Application Porting using Andes Toolchain



*1. Modify config.sub*
*1.1 Modify config.sub file* for individual package

This step helps the autoconf tool
<http://www.gnu.org/software/autoconf/>recognizing the Andes
architecture and machine type. You can follow the diff
file below to modify the corresponding field in your package’s config.sub
file.



*$ diff -u config.sub.orig config.sub*

*--- config.sub.orig     2009-03-03 14:45:26.000000000 +0800*

*+++ config.sub  2009-03-03 15:08:37.000000000 +0800*

*@@ -149,6 +149,7 @@*

* case $basic_machine in*

*        # Recognize the basic CPU types without company name.*

*        # Some are omitted here because they have special meanings below.*

*+       nds32 | nds32le \*

*        tahoe | i860 | m32r | m68k | m68000 | m88k | ns32k | arc | arm \*

*                | arme[lb] | pyramid | mn10200 | mn10300 \*

*                | tron | a29k | 580 | i960 | h8300 | hppa | hppa1.0 |
hppa1.1 \*

*@@ -171,6 +172,7 @@*

*                exit 1*

*                ;;*

*        # Recognize the basic CPU types with company name.*

*+       nds32-* | nds32le-* \*

*        vax-* | tahoe-* | i[3456]86-* | i860-* | m32r-* | m68k-* | m68000-*
\*

*              | m88k-* | sparc-* | ns32k-* | fx80-* | arc-* | arm-* |
c[123]* \*

*              | mips-* | pyramid-* | tron-* | a29k-* | romp-* | rs6000-* \*



or


*1.2 Modify config.sub file for automake*



Added NDS32 archicture from Andes Technology.

---

 config.sub |    2 ++

 1 file changed, 2 insertions(+)



Index: automake1.10-1.10.1/lib/config.sub

===================================================================

--- automake1.10-1.10.1.orig/lib/config.sub      2008-08-13
16:20:51.000000000 +0800

+++ automake1.10-1.10.1/lib/config.sub  2008-08-13 16:25:05.000000000 +0800

@@ -270,6 +270,7 @@

       | mn10200 | mn10300 \

       | mt \

       | msp430 \

+      *| nds32 | nds32le* \

       | nios | nios2 \

       | ns16k | ns32k \

       | or32 \

@@ -351,6 +352,7 @@

       | mmix-* \

       | mt-* \

       | msp430-* \

*+      | nds32-*|** nds32le-*** \*

       | nios-* | nios2-* \

       | none-* | np1-* | ns16k-* | ns32k-* \

       | orion-* \x



*2. configure and make*

./configure --host=$HOST --build=$BUILD --prefix=$PREFIX

make

#make install DESTDIR=${DEPLOY_DIR}

make install DESTDIR=${PREFIX}



Regards,

Mentor



-- 
Best Regards,

Thomas Yu - Sian , Liu