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 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