uClinux without Flash (again)

I agree, I want to stick with linux now, no more IDE except for downloading - but I definitely don't know how to build the filesystem from scratch.

Should I just create an empty directory, and then create the following directories:

/bin

/sbin

/etc

/dev

/usr

/var

/tmp

/proc

/sys

I don't understand how to create entries in the /dev directory - the only device I need for now is the JTAG UART (I think) - so how do I create an entry for this?

What other entries in /dev do I need? Once I do that, I can create an /etc/inittab file like you said..

Then I have to get busybox working, correct? I was able to do a make menuconfig in Cygwin in the busybox directory, but I couldn't get it in linux... should I follow the instructions on MArcs page for busybox, or should I copy it from the examples apps directory in windows??? Then onc eI have it in linux, I should be able to add any apps using the menu and do a make; make install. I did this all in windows, but I would like to do it in linux too (keep it simple like you said).

So correct me if I'm wrong, but /init is automatically executed when the root initramfs is mounted, correct? and /sbin/init will be built by busybox... and init uses /etc/inittab to do more stuff?? How is the login console started then?

I will try and get busybox building in linux now... can I just download from the busybox site, or is there a special build for nios2?

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originally posted by hippo@Nov 28 2005, 08:07 PM

cheer!!

about the root fs, it should be better to build it by hand. it is simple and clean.

i would prefer doing all the works in a shell console, instead of the ide.

the ide may add something unpredictable.

you should build everything in console, and back to ide when you download and test.

you can borrow a lot from slackware/initrd, in tranditional linux life style.

setup all the dirs, bin,sbin,etc,dev,usr,usr/bin,var,tmp,proc,sys ...

check if you have all the devices you will use, zero,null,console ( and hda,hda1... etc)

it maybe missing /dev/console that give you the warning.

setup the install path to your root fs in busybox menuconfig. and make install, it will copy and

setup the symlinks.

add a symlink /init to /sbin/init for initramfs to work.

and a very simple inittab,

# startup the file system

null::sysinit:/bin/mount -t proc proc /proc

null::sysinit:/bin/mount -t sysfs sysfs /sys

# busybox console

::askfirst:/bin/sh

you should be sitting in front of busybox prompt now.

about the apps, i would prefer add them to busybox.

it saves space and troubles.

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