Quick guide for porting uClinux to ALTERA DE2-70
Platform and tools: Windows XP, Ubuntu 9.04, Nios || 9.1, Quartus || 9.1, samba, Vmware7.0
Prepare
Step 1, Install Ubuntu in Vmware;
Step 2, Constructing Samba server to share folds with (Host)XP; (Details has been introduced in my blog);
Step 3, Install Nios as well as Quartus;
Let's begin
Step 1, Install necessary tools
sudo apt-get update
sudo apt-get install git-core git-gui make gcc ncurses-dev bison flex gawk gettext ccache zlib1g-dev libx11-dev texinfo liblzo2-dev pax-utils uboot-mkimage corkscrew
Step 2, Check the environment and tools
ls -l /bin/sh
This should give "/bin/sh -> bash",
Otherwise, change it with following commands,
sudo rm /bin/sh
sudo ln -s bash /bin/sh
followed by a logout and log back in again(Recommended).
As root, check if you have "cc" which is a symlink to "gcc" ?
which gcc
gcc -v
which cc
cc -v
if not,
cd /usr/bin
ln -s gcc cc
Before compiling the 20090703 toolchain on a linux ubuntu/kubuntu 9.04 you need to make sure to install gcc version 4.2 (older) and gcc's file system link is properly pointing to it:
sudo apt-get install gcc-4.1
sudo rm /usr/bin/gcc
sudo ln -s gcc-4.1 /usr/bin/gcc
PS: If you have installed more than one edition of gcc, make sure the edition that you point to is lower than 4.2, or it will stick whiling building the toolchain.
Step 3, Downloading the nios2-linux-20090730.tar
wget http://www.niosftp.com/pub/uclinux/nios2-linux-20090730.tar
This will take several hours. Maybe you will spend much less if use Xunlei to deal with it.
tar xvf nios2-linux-20090730.tar /
cd /nios2-linux
Check out the source,this will take a while
./checkout
Step 4, Building the toolchain
cd toolchain-build
gcc --version
git clean -f -x -d # clean on restart
make gcc elf2flt gdb-host #This takes about an hour
cd ..
Logout and login again. You can use the tools now. Run this to verify that you have it in your command search path,
nios2-linux-uclibc-gcc -v
Step 5, Now let's compile a simple hello.c by this cross gcc tool
First, configure the cross compile environment
vim ~/.bashrc
# Add a line in the end
PATH=$PATH:/home/hippo/nios2-linux/toolchain-build/build/nios2/bin
write a simple test file hello.c
#include <stdio.h>
******************************************************************************************
int main(void)
{
printf("hello, world!/n");
return 0;
}
******************************************************************************************
nios2-linux-uclibc-gcc hello.c -o hello -elf2flt
nios2-linux-uclibc-flthdr hello #check the format of hello
Step 6, We can build the kernel now
cd uClinux-dist
make menuconfig
In the menuconfig, make sure it is selected as follows:
Vendor/Product Selection ---> # select
--- Select the Vendor you wish to target
Vendor (Altera) ---> # should have default to Altera
--- Select the Product you wish to target
Altera Products (nios2) ---> # should have defaulted to nios2
Kernel/Library/Defaults Selection ---> # select
--- Kernel is linux-2.6.x
Libc Version (None) ---> # should default to None - very important.
[*] Default all settings (lose changes) # select
[ ] Customize Kernel Settings
[ ] Customize Vendor/User Settings
[ ] Update Default Vendor Settings
Then <exit> <exit> <yes>
Switch to XP, copy DE2_System/DE2_demonstrations/DE2_NET/ DE2_70_SOPC.ptf and DE2_70_NET.sof to the share folder by samba
Switch to Ubuntu, cd the share folder,then
cp DE2_70_SOPC.ptf /mnt
cd uClinux-dist
make vendor_hwselect SYSPTF=/mnt/DE2_70_SOPC.ptf
******************************************************************************************
--- Please select which CPU you wish to build the kernel against:
(1) cpu - Class: altera_nios2 Type: f Version: 7.07
Selection: 1
--- Please select a device to execute kernel from:
(1) sdram_u2
Class: altera_avalon_new_sdram_controller
Size: 33554432 bytes
(2) onchip_mem
Class: altera_avalon_onchip_memory2
Size: 8192 bytes
(3) cfi_flash
Class: altera_avalon_cfi_flash
Size: 8388608 bytes
(4) ssram
Class: altera_avalon_cy7c1380_ssram
Size: 2097152 bytes
(5) sdram_u1
Class: altera_avalon_new_sdram_controller
Size: 33554432 bytes
Selection: 5
******************************************************************************************
make
#This takes a while, if it is successful , it displays :
LD arch/nios2/boot/compressed
OBJCOPY arch/nios2/boot/zImage
Kernel: arch/nios2/boot/zImage is ready
make[3]:正在离开目录 `/nios2-linux
cp /nios2-linux/uClinux-dist
make[2]:正在离开目录 `/nios2-linux/uClinux-dist
make[1]:正在离开目录 a_ava
#Now we got the zImage, and copy it to the share folder
Step 7, Are you excited? This step does make you excited!
Goto the share folder, copy zImage and DE2_70_NET.sof to C:/test
Open a Nios II command shell on Windows from Windows Start-->Programs-->Altera-->Nios II 9.1 -->Nios II 9.1 Command Shell, and change to the download dir.
cd /cygdrive/c/test
step 1. Configure the FPGA,
nios2-configure-sof DE2_70_NET.sof
step 2. Download and run the kernel image,
nios2-download -g zImage
nios2-terminal
Done