Quick guide for porting linux to ALTERA DE2-70

Platform and tools: Ubuntu 9.04

Step 1, Download the nios linux tallbal

wget http://www.niosftp.com/pub/linux/nios2-linux-20090929.tar
or use xunlei to fix it.

Step2,

tar xvf nios2-linux-20090929.tar

cd nios2-linux

./checkout

Step 3, Generate the fpga.h file

First, a nios processor should be constructed.

Use any one of examples in the DE2 cd. For instance, use E:/fpga/de2_70/DE2_70_demonstrations/DE2_70_NIOS_HOST_MOUSE_VGA

Then add a mmu as pics bellow. Remember to click the Auto-Assign Base Addresses, or it will sthick on the booting stage.



Click Generate, this takes a while.

Alfter above steps, we can get fpga.h file now.Open Nios II Command Shell, cd to this DE2...vga DIR, and key in the following commond

sopc-create-header-files --single fpga.h

start complication

copy ***VGA.sof to c:/

then copy the fpga.h file to /softs/nios2-linux/linux-2.6/arch/nios2/include/asm

Step 4 Building the linux kernel

Add "PATH=$PATH:~/nios2-linux/toolchain-mmu/x86-linux2/bin" to ~/.bashrc file
cd /softs/nios2-linux/uClinux-dist
make menuconfig
#Enable the dma9000 and mtd drivers
make
cd images
copy linux.initramfs.gz to windows xp c:/

Step 5 Flash Linux kelnel to DE2-70

Open Nios II Command Shell, cd to this DE2...vga DIR, and key in the
following commonds

nios2-configure-sof ***.sof
nios2-download -g linux.initramfs.gz
nios2-terminal

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[NiosII EDS]$ nios2-terminal

nios2-terminal: connected to hardware target using JTAG UART on cable

nios2-terminal: "USB-Blaster [USB-0]", device 1, instance 0

nios2-terminal: (Use the IDE stop button or Ctrl-C to terminate)

Linux version 2.6.30-00494-g84a224b-dirty (root@ubuntu) (gcc version 4.1.2) #14

Mon May 24 03:24:02 PDT 2010

console [early0] enabled

Early printk initialized

Linux/Nios II-MMU

init_bootmem_node(?,0x42eb, 0x4000, 0x6000)

free_bootmem(0x42eb000, 0x1d15000)

reserve_bootmem(0x42eb000, 0x400)

Built 1 zonelists in Zone order, mobility grouping on. Total pages: 8128

Kernel command line:

NR_IRQS:32

PID hash table entries: 128 (order: 7, 512 bytes)

Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)

Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)

We have 24576 pages of RAM

Memory available: 29488k/2986k RAM, 0k/0k ROM (1562k kernel code, 1424k data)

Calibrating delay loop... 49.25 BogoMIPS (lpj=246272)

Mount-cache hash table entries: 512

net_namespace: 716 bytes

NET: Registered protocol family 16

init_BSP(): registering device resources

bio: create slab <bio-0> at 0

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

TCP established hash table entries: 1024 (order: 1, 8192 bytes)

TCP bind hash table entries: 1024 (order: 0, 4096 bytes)

TCP: Hash tables configured (established 1024 bind 1024)

TCP reno registered

msgmni has been set to 57

io scheduler noop registered

io scheduler anticipatory registered

io scheduler deadline registered

io scheduler cfq registered (default)

ttyJ0 at MMIO 0x96095a8 (irq = 2) is a Altera JTAG UART

console handover: boot [early0] -> real [ttyJ0]

dm9000 Ethernet Driver, V1.31

mice: PS/2 mouse device common for all mice

TCP cubic registered

Welcome to

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/ __| ||_|

_ _| | | | _ ____ _ _ _ _

| | | | | | || | _ /| | | |/ // /

| |_| | |__| || | | | | |_| |/ /

| ___/____|_||_|_| |_|/____|/_//_/

| |

|_|

For further information check:
http://www.uclinux.org/
BusyBox v1.15.1 (2010-05-23 23:55:03 PDT) hush - the humble shell

Enter 'help' for a list of built-in commands.

/ # ls

bin etc init mnt root sys usr

dev home lib proc sbin tmp var

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Done