Kernel panic - not syncing: No init found.

thanks to hippo again!

linux is running well on my custum cyclone ep1c6 board now.

uClinux/Nios II

Altera Nios II support © 2004 Microtronix Datacom Ltd.

Built 1 zonelists

Kernel command line:

PID hash table entries: 64 (order: 6, 1024 bytes)

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

Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)

Memory available: 6936k/8192k RAM, 0k/0k ROM (646k kernel code, 492k data)

Mount-cache hash table entries: 512 (order: 0, 4096 bytes)

unpack_to_rootfs 8bfc28+52579 check 0

populate_rootfs: unpack_to_rootfs return <NULL>

<6>Linux NoNET1.0 for Linux 2.6

NIOS serial driver version 0.0

ttyS0 (irq = 0) is a builtin NIOS UART

io scheduler noop registered

io scheduler anticipatory registered

io scheduler deadline registered

Freeing unused kernel memory: 368k freed (0x8b6000 - 0x911000)

BusyBox v1.1.0 (2006.01.16-08:41+0000) Built-in shell (msh)

Enter &#39;help&#39; for a list of built-in commands.

# uname -a

uClinux (none) 2.6.11-uc0# 37 Mon Jan 16 16:57:42 CST 2006 nios2nommu unknown# top

top: not found# free

total used free shared buffers

Mem: 7328 5124 2204 0 0# ls -al

drwxr-xr-x 17 root root 0 Nov 29 17:00 .

drwxr-xr-x 17 root root 0 Nov 29 17:00 ..

drwxr-xr-x 2 default users 0 Nov 29 17:00 bin

drwxr-xr-x 6 default users 0 Nov 29 17:00 dev

drwxr-xr-x 4 default users 0 Nov 29 17:00 etc

drwxr-xr-x 3 default users 0 Nov 29 17:00 home

lrwxrwxrwx 1 default users 10 Nov 29 17:00 init -> /sbin/init

drwxr-xr-x 2 default users 0 Nov 29 17:00 lib

lrwxrwxrwx 1 default users 11 Nov 29 17:00 linuxrc -> bin/busybox

drwx------ 2 default users 0 Nov 29 17:00 lost+found

drwxr-xr-x 2 default users 0 Nov 29 17:00 mnt

drwxr-xr-x 2 default users 0 Nov 29 17:00 opt

dr-xr-xr-x 22 root root 0 Nov 29 17:00 proc

drwxr-xr-x 2 default users 0 Nov 29 17:00 root

drwxr-xr-x 2 default users 0 Nov 29 17:00 sbin

drwxr-xr-x 9 root root 0 Nov 29 17:00 sys

drwxrwxrwt 2 default users 0 Nov 29 17:00 tmp

drwxr-xr-x 5 default users 0 Nov 29 17:00 usr

drwxr-xr-x 3 default users 0 Nov 29 17:00 var# vi

as above ,linux cost memory more than other small rtos,for run real apps,8MB SDRAM is not enough,oh,I need a bigger one.

--- Quote Start ---

originally posted by hippo@Jan 16 2006, 03:57 AM

the snapshot dir are updated to 20060116 now.

i have updated the configs.zip, downloaded and tested with the buildroot-20060116, uclibc-20060116 and busybox-1.1.0. please check again.

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=12214)

--- quote end ---

--- Quote End ---

Great!! I am happy with your success.

You can use "free" to find out the memory usage.

You can try the following to reduce the memory usage.

1. The default busybox use more options than you will need.

You can reduce the commands or features supported by busybox, only keep those you will use.

cd ~/buildroot/build_nios2/busybox

make menuconfig

make

cd ~/buildroot

make

2. reduce the kernel, reduce unused driver and file system.

cd ~/linux-2.6.x

make ...... menuconfig

make

3. remove unused files and nodes in rootfs/etc and rootfs/dev

4. you can delete files at run time when they are no longer in use.

After carefully checking, the memory usage can be reduced by almost 50%.

I am trying to get an update, via subversion.....

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

hootsmon@ce00205:~/buildroot$ svn update

svn: Can&#39;t connect to host &#39;uclibc.org&#39;: No route to host[/b]

--- Quote End ---

Any suggestions what is going wrong?

Perhaps a firewall problem.... I can ping uclibc.org OK.

Hi hootsmon,

The latest/svn uClibc/Buildroot has problem with Nios2. The buildroot has problem in elf2flt.ld and gcc patches. I am busy with other projects, and did not have time to get them fixed. 20060207 or 20070208 are the last known good snapshot. Busybox should be OK.

If you&#39;re from China, they seem to block svn access.