uClinux-dist added to buildroot guide

Altera_Forum · ‎02-13-2006

The uClinux-dist has a lots of apps ported to uClinux, such as BOA(httpd), dhcpd, net-snmap... etc.

Now included in the buildroot guide,

http://forum.niosforum.com/forum/index.php?showtopic=3174 (http://forum.niosforum.com/forum/index.php?showtopic=3174)

Altera_Forum · ‎02-14-2006

hi hippo:

You added boa, net-snmp, dhcp in your new toolschain.It is very helpful.

Thank you.I will try it in my cyclone1c20 dvb later.

Altera_Forum · ‎02-16-2006

Hi hippo,

First, many thanks for your excellent buildroot guide. My toolchain built just fine, so I compiled a (minimal) uClinux kernel. Unfortunately it fails to boot....

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

--- Quote Start ---

Linux version 2.6.11-uc0 (hootsmon@ce00205) (gcc version 3.4.5)# 3 Thu Feb 16 17:2 9:58 EST 2006

uClinux/Nios II

Built 1 zonelists

Kernel command line:

PID hash table entries: 128 (order: 7, 2048 bytes)

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

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

Memory available: 15232k/16384k RAM, 0k/0k ROM (836k kernel code, 139k data)

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

NET: Registered protocol family 16

Serial: JTAG UART driver $Revision: 1.4 $

ttyJ0 at MMIO 0x821208b0 (irq = 1) is a jtag_uart

io scheduler noop registered

io scheduler deadline registered

Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)[/b]

--- Quote End ---

Looks like I haven't got a filesystem yet? Can anyone help pls?

Altera_Forum · ‎02-17-2006

Hi hootsmon, please check post#27 of the buildroot guide.

Altera_Forum · ‎02-17-2006

Your problem is definitely lack of initramfs... check out the post, and make sure you generate your filesystem correctly, with the appropriate device nodes in /dev (you need to be root to do this)!

Altera_Forum · ‎02-18-2006

--- Quote Start ---

originally posted by jdhar@Feb 17 2006, 11:44 PM

your problem is definitely lack of initramfs... check out the post, and make sure you generate your filesystem correctly, with the appropriate device nodes in /dev (you need to be root to do this)!

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=12772)

--- quote end ---

--- Quote End ---

Hi Jdhar,

I updated the initamfs config, add a text file ~/download/rootfs_list for the list of /dev nodes and the /init link, so that a root login is not required now.

Altera_Forum · ‎03-01-2006

I struggled to get uClinux working with INITRAMFS, but eventually I had to admit defeat :-( A pity, because initramfs sounds good.

But some good news is I have managed to boot uClinux with ROMFS, so at least I have a useable development platform now. And it proves the toolchain is OK.

Many thanks to hippo and jdhar for your help.

Altera_Forum · ‎03-01-2006

Never give up. I did struggle a lots before I sucessed with initramfs, because it was new to uClinux.

Check your kernel's .config, it should have,

CONFIG_INITRAMFS_SOURCE="~/rootfs ~/download/rootfs_list"

Build the kernel, and show me the file, ~/linux-2.6.x/usr/initramfs_list .

The file contains a list of what are built into initramfs.

Altera_Forum · ‎03-03-2006

Yeehaa! I have a minimal uClinux working nicely now, complete with initramfs and busybox. Persistence pays off. For the record, I used buildroot snapshot 20060208 this time, and this worked better for me.

Thanks hippo for your generous help.