Re: [gentoo-embedded] PPC embedded base package

Re: [gentoo-embedded] PPC embedded base package

[Quentin Arce]

Anthony,

I have looked at this in my work and at home.  Work we
have used the 8248 and 8245.  Home, I am working on a
small x86 based system.  Gentoo will work for your
target... but, you really want to think about if you
should.  Think long term support.  Also, think about
the build system, stability.  In working on my own
mini x86 based linux distro based on Gentoo... So,
far... you can do it.  You can cross compile it, but,
there are still some packages that don't seem to work
just yet.  You want the base layout lite.  And you
want a system based on Busybox for the size you are
targeting.  Check out the portage profiles:

/usr/portage/profiles/embedded
/usr/portage/profiles/uclibc
/usr/portage/profiles/default-ppc-2004.3

I am now using the uclibc for my x86 project.  I used
the default-ppc-2004.3 to build a 8248 rootfs.  The
size was way too big to be burned into the flash
though.  

You could come up with your own custom profile, inject
any packages you need and then you could use portage.

OR

You could use something like Debian to build a mini
root and strip it of all cruft.  (hint, hint)  You
could even do this on an x86 system and then write a
few scripts to fix the post scripts from the deb
install. (hint hint)  Then just sync the built root to
another directory, clean the clone and build a jffs2
image.

OR

You can go the full custom route via LFS or your own
home grown.


I have learned quite a bit since I started with ppc
embedded.  I'm still learning with mini x86.

Q



--- Anthony Russello <arussello@rogers.com> wrote:
> Hi,
> 
> Thanks for the reply, I'm sorry it took so long to
> get back to you, but
> I never received an email to me until the digest
> caught up.
> 
> We're working on a small NAS-like device.  Very
> light weight, and
> targetting to consumers rather than businesses, so
> everything will be
> pretty simple.
> 
> I'm currently working on getting a 2.6.x kernel up
> on the early boards.
> Once that's up and running, I'll be working on the
> rootfs.  I've been
> doing a lot of checking as far as dependencies go,
> and I've got the
> libraries narrowed down substantially.  We're also
> using the 2.2.x samba
> branch, since the 3.x branch requires a large number
> of libraries that
> we don't want to include.
> 
> I've been ensuring that every binary going into the
> image is stripped so
> far as well.
> 
> I guess I was kind of hoping that the gentoo
> embedded group was working
> with small root filesystem sizes, and whether or not
> there was a base
> layout package that would simply contain things like
> pre-populated /dev,
> and other absolutely essential sources like that.
> 
> Are there any plans for such a package?  Perhaps
> with makefiles that
> would leverage cross compilers to create a base
> system for target X on
> host Y?
> 
> It would make embedded development incredibly easy
> with cross compilers
> and base layout packages of that sort ready to be
> emerged into /opt or
> something like that.
> 
> Thanks,
> Anthony
> 
> On Tue, 2005-04-12 at 08:29 -0700, Quentin Arce
> wrote:
> > 
> > One thing you may want to keep in mind when
> building
> > your system is to make sure all bins are stripped.
> 
> > Also, some embedded companies have tools which
> > determine which libs are being used on the system
> and
> > remove all others from the final image.  Just to
> > squeeze that last bit of space out.
> > 
> > Also, don't forget to remove all other un-needed
> > files.  Like /var/db, all man, etc.
> > 
> > Q
> > 
> > 
> > --- Anthony Russello <arussello@rogers.com> wrote:
> > > Hi All,
> > > 
> > > I'm working on a base layout for an embedded
> system
> > > based on the
> > > Freescale 8241 chip, and was wondering what
> might be
> > > available in the
> > > world of gentoo for that purpose.
> > > 
> > > Here are the requirements we've laid out:
> > > 
> > > Read/write /etc (jffs2 filesystem)
> > > /var is a ramdisk, /tmp is a symlink to /var/tmp
> > > / is read only otherwise (cramfs filesystem)
> > > 
> > > As far as apps, we basically just need:
> > > 
> > > boa
> > > busybox
> > > samba 2.2.x (samba 3 requires additional
> libraries
> > > in the final image)
> > > sysvinit
> > > sqlite
> > > quota-tools
> > > sys-utils
> > > e2fsprogs
> > > 
> > > Now, we created one a while back using an axis
> chip,
> > > and they had a full
> > > development package that we just modified as
> needed.
> > >  In the end we
> > > wound up with an image that had about 2 MB left
> over
> > > of the eight.
> > > RIght now, we're kind of starting fresh with an
> 8241
> > > based system, so I
> > > wanted to get some input on what recommendations
> you
> > > might have.
> > > 
> > > I've already been playing around with a custom
> thing
> > > from the ground up.
> > > But just in case, I'd like to see if there is
> > > something else we could
> > > look into.
> > > 
> > > I've been using gentoo for quite some time now
> > > (since the 1.4 days) but
> > > I haven't been following the gentoo embedded
> list
> > > for the most part.
> > > 
> > > Cheers,
> > > Anthony
> > > 
> > > --
> > > gentoo-embedded@gentoo.org mailing list
> > > 
> > > 
> > 
> > 
> > 
> > __________________________________________________
> > Do You Yahoo!?
> > Tired of spam?  Yahoo! Mail has the best spam
> protection around 
> > http://mail.yahoo.com 
> > --
> > gentoo-embedded@gentoo.org mailing list
> 
> -- 
> gentoo-embedded@gentoo.org mailing list
> 
> 

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Re: [gentoo-embedded] PPC embedded base package

[Anthony Russello]

Hi Quentin,

Thanks for getting back to me.

Currently I'm working on the third option you listed
below.  I've actually been building a base system
completely from scratch, utilizing busybox, glibc,
boa,  samba 2.2.x, and sysvinit for the core apps.

What I was hoping was that there would already be, at
the very least, a package that would contain the
rootfs, device nodes, etc.

Also, I saw recent work on adding emerge to busybox,
which would be handy during initial development
(chroot'ing into the rootfs, and then using the
busybox emerge to install some packages).

Any thoughts on this?

Thanks,
Anthony

 --- Quentin Arce <qarce@yahoo.com> wrote: 
> 
> 
> Anthony,
> 
> I have looked at this in my work and at home.  Work
> we
> have used the 8248 and 8245.  Home, I am working on
> a
> small x86 based system.  Gentoo will work for your
> target... but, you really want to think about if you
> should.  Think long term support.  Also, think about
> the build system, stability.  In working on my own
> mini x86 based linux distro based on Gentoo... So,
> far... you can do it.  You can cross compile it,
> but,
> there are still some packages that don't seem to
> work
> just yet.  You want the base layout lite.  And you
> want a system based on Busybox for the size you are
> targeting.  Check out the portage profiles:
> 
> /usr/portage/profiles/embedded
> /usr/portage/profiles/uclibc
> /usr/portage/profiles/default-ppc-2004.3
> 
> I am now using the uclibc for my x86 project.  I
> used
> the default-ppc-2004.3 to build a 8248 rootfs.  The
> size was way too big to be burned into the flash
> though.  
> 
> You could come up with your own custom profile,
> inject
> any packages you need and then you could use
> portage.
> 
> OR
> 
> You could use something like Debian to build a mini
> root and strip it of all cruft.  (hint, hint)  You
> could even do this on an x86 system and then write a
> few scripts to fix the post scripts from the deb
> install. (hint hint)  Then just sync the built root
> to
> another directory, clean the clone and build a jffs2
> image.
> 
> OR
> 
> You can go the full custom route via LFS or your own
> home grown.
> 
> 
> I have learned quite a bit since I started with ppc
> embedded.  I'm still learning with mini x86.
> 
> Q
> 
> 
> 
> --- Anthony Russello <arussello@rogers.com> wrote:
> > Hi,
> > 
> > Thanks for the reply, I'm sorry it took so long to
> > get back to you, but
> > I never received an email to me until the digest
> > caught up.
> > 
> > We're working on a small NAS-like device.  Very
> > light weight, and
> > targetting to consumers rather than businesses, so
> > everything will be
> > pretty simple.
> > 
> > I'm currently working on getting a 2.6.x kernel up
> > on the early boards.
> > Once that's up and running, I'll be working on the
> > rootfs.  I've been
> > doing a lot of checking as far as dependencies go,
> > and I've got the
> > libraries narrowed down substantially.  We're also
> > using the 2.2.x samba
> > branch, since the 3.x branch requires a large
> number
> > of libraries that
> > we don't want to include.
> > 
> > I've been ensuring that every binary going into
> the
> > image is stripped so
> > far as well.
> > 
> > I guess I was kind of hoping that the gentoo
> > embedded group was working
> > with small root filesystem sizes, and whether or
> not
> > there was a base
> > layout package that would simply contain things
> like
> > pre-populated /dev,
> > and other absolutely essential sources like that.
> > 
> > Are there any plans for such a package?  Perhaps
> > with makefiles that
> > would leverage cross compilers to create a base
> > system for target X on
> > host Y?
> > 
> > It would make embedded development incredibly easy
> > with cross compilers
> > and base layout packages of that sort ready to be
> > emerged into /opt or
> > something like that.
> > 
> > Thanks,
> > Anthony
> > 
> > On Tue, 2005-04-12 at 08:29 -0700, Quentin Arce
> > wrote:
> > > 
> > > One thing you may want to keep in mind when
> > building
> > > your system is to make sure all bins are
> stripped.
> > 
> > > Also, some embedded companies have tools which
> > > determine which libs are being used on the
> system
> > and
> > > remove all others from the final image.  Just to
> > > squeeze that last bit of space out.
> > > 
> > > Also, don't forget to remove all other un-needed
> > > files.  Like /var/db, all man, etc.
> > > 
> > > Q
> > > 
> > > 
> > > --- Anthony Russello <arussello@rogers.com>
> wrote:
> > > > Hi All,
> > > > 
> > > > I'm working on a base layout for an embedded
> > system
> > > > based on the
> > > > Freescale 8241 chip, and was wondering what
> > might be
> > > > available in the
> > > > world of gentoo for that purpose.
> > > > 
> > > > Here are the requirements we've laid out:
> > > > 
> > > > Read/write /etc (jffs2 filesystem)
> > > > /var is a ramdisk, /tmp is a symlink to
> /var/tmp
> > > > / is read only otherwise (cramfs filesystem)
> > > > 
> > > > As far as apps, we basically just need:
> > > > 
> > > > boa
> > > > busybox
> > > > samba 2.2.x (samba 3 requires additional
> > libraries
> > > > in the final image)
> > > > sysvinit
> > > > sqlite
> > > > quota-tools
> > > > sys-utils
> > > > e2fsprogs
> > > > 
> > > > Now, we created one a while back using an axis
> > chip,
> > > > and they had a full
> > > > development package that we just modified as
> > needed.
> > > >  In the end we
> > > > wound up with an image that had about 2 MB
> left
> > over
> > > > of the eight.
> > > > RIght now, we're kind of starting fresh with
> an
> > 8241
> > > > based system, so I
> > > > wanted to get some input on what
> recommendations
> > you
> > > > might have.
> > > > 
> > > > I've already been playing around with a custom
> > thing
> > > > from the ground up.
> > > > But just in case, I'd like to see if there is
> > > > something else we could
> > > > look into.
> > > > 
> > > > I've been using gentoo for quite some time now
> > > > (since the 1.4 days) but
> > > > I haven't been following the gentoo embedded
> > list
> > > > for the most part.
> > > > 
> > > > Cheers,
> > > > Anthony
> > > > 
> > > > --
> > > > gentoo-embedded@gentoo.org mailing list
> > > > 
> > > > 
> > > 
> > > 
> > > 
> > >
> __________________________________________________
> > > Do You Yahoo!?
> > > Tired of spam?  Yahoo! Mail has the best spam
> > protection around 
> > > http://mail.yahoo.com 
> > > --
> > > gentoo-embedded@gentoo.org mailing list
> > 
> > -- 
> > gentoo-embedded@gentoo.org mailing list
> > 
> > 
> 
> __________________________________________________
> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam
> protection around 
> http://mail.yahoo.com 
>  
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Re: [gentoo-embedded] PPC embedded base package

[Quentin Arce]

--- Anthony Russello <arussello@rogers.com> wrote:

> Hi Quentin,
> 
> Thanks for getting back to me.
> 
> Currently I'm working on the third option you listed
> below.  I've actually been building a base system
> completely from scratch, utilizing busybox, glibc,
> boa,  samba 2.2.x, and sysvinit for the core apps.
> 
> What I was hoping was that there would already be,
> at
> the very least, a package that would contain the
> rootfs, device nodes, etc.

So you want the ppc stage1 or stage2 tarball for this.
 It will need to be stripped out.... or you can just
setup a chroot build env... search for uclibc gentoo
in the forums or on the web.  I don't see the webpage
still up... hmmm. must have closed it... 

So, use a stage3 x86 tarball, untar into some big
devel space.

mount/bind proc & dev

fix up etc/mtab to be correct.

write a script something like

mount -o bind /dev /path/to/devel/dev
mount -t proc proc /path/to/devel/proc

chroot /path/to/devel /bin/bash

umount  /path/to/devel/dev
umount  /path/to/devel/proc

Perhaps add some locking to keep from running this
twice ;-)

once in devel space.  emerge sync, emerge --update
--deep world.  Build the cross compiler per cross
build howto which can be found in the forums.

setup your make.conf for the cross env or write a
wrapper script to emerge to set the
ROOT=/new/ppc/fs/relative/to/devel/rootfs
PATH=/path.../see/cross/build/notes emerge
baselayout-lite busybox boa foo

Have some lunch... check on the progress.  Depending
on your build host, start testing or go home for the
day.


Come back, NFS mount and test your system.  Write a
script to clone the rootfs you just built

rsync  /path/to/devel/opt/ppcrootfs /tmp/scratchroot
rm somelistoffiles
  (have a look at the Catalyst scripts and then add
some more as needed)

See how small of a fs you can get.

Don't forget to creat all of the symbolic links for
busybox.  You may need to inject a package to fool
portage into thinking you have the basic unix utils
packages already installed.

Then you should be just about all set.

Note: you really want the baselayout lite as you don't
want to full runlevels system in an embedded app. 
Just a simple set of init scripts.  Note, you can also
use busybox for your init.  This is what freescale
does.

>From there you can do almost anything.

Just remember to save all packages for the future. 
You may need to re-create all of your work in say 2
years to fix a bug for a client.  Backups are your
friend.

Have fun.

Q




> Also, I saw recent work on adding emerge to busybox,
> which would be handy during initial development
> (chroot'ing into the rootfs, and then using the
> busybox emerge to install some packages).
> 
> Any thoughts on this?
> 
> Thanks,
> Anthony
> 
>  --- Quentin Arce <qarce@yahoo.com> wrote: 
> > 
> > 
> > Anthony,
> > 
> > I have looked at this in my work and at home. 
> Work
> > we
> > have used the 8248 and 8245.  Home, I am working
> on
> > a
> > small x86 based system.  Gentoo will work for your
> > target... but, you really want to think about if
> you
> > should.  Think long term support.  Also, think
> about
> > the build system, stability.  In working on my own
> > mini x86 based linux distro based on Gentoo... So,
> > far... you can do it.  You can cross compile it,
> > but,
> > there are still some packages that don't seem to
> > work
> > just yet.  You want the base layout lite.  And you
> > want a system based on Busybox for the size you
> are
> > targeting.  Check out the portage profiles:
> > 
> > /usr/portage/profiles/embedded
> > /usr/portage/profiles/uclibc
> > /usr/portage/profiles/default-ppc-2004.3
> > 
> > I am now using the uclibc for my x86 project.  I
> > used
> > the default-ppc-2004.3 to build a 8248 rootfs. 
> The
> > size was way too big to be burned into the flash
> > though.  
> > 
> > You could come up with your own custom profile,
> > inject
> > any packages you need and then you could use
> > portage.
> > 
> > OR
> > 
> > You could use something like Debian to build a
> mini
> > root and strip it of all cruft.  (hint, hint)  You
> > could even do this on an x86 system and then write
> a
> > few scripts to fix the post scripts from the deb
> > install. (hint hint)  Then just sync the built
> root
> > to
> > another directory, clean the clone and build a
> jffs2
> > image.
> > 
> > OR
> > 
> > You can go the full custom route via LFS or your
> own
> > home grown.
> > 
> > 
> > I have learned quite a bit since I started with
> ppc
> > embedded.  I'm still learning with mini x86.
> > 
> > Q
> > 
> > 
> > 
> > --- Anthony Russello <arussello@rogers.com> wrote:
> > > Hi,
> > > 
> > > Thanks for the reply, I'm sorry it took so long
> to
> > > get back to you, but
> > > I never received an email to me until the digest
> > > caught up.
> > > 
> > > We're working on a small NAS-like device.  Very
> > > light weight, and
> > > targetting to consumers rather than businesses,
> so
> > > everything will be
> > > pretty simple.
> > > 
> > > I'm currently working on getting a 2.6.x kernel
> up
> > > on the early boards.
> > > Once that's up and running, I'll be working on
> the
> > > rootfs.  I've been
> > > doing a lot of checking as far as dependencies
> go,
> > > and I've got the
> > > libraries narrowed down substantially.  We're
> also
> > > using the 2.2.x samba
> > > branch, since the 3.x branch requires a large
> > number
> > > of libraries that
> > > we don't want to include.
> > > 
> > > I've been ensuring that every binary going into
> > the
> > > image is stripped so
> > > far as well.
> > > 
> > > I guess I was kind of hoping that the gentoo
> > > embedded group was working
> > > with small root filesystem sizes, and whether or
> > not
> > > there was a base
> > > layout package that would simply contain things
> > like
> > > pre-populated /dev,
> > > and other absolutely essential sources like
> that.
> > > 
> > > Are there any plans for such a package?  Perhaps
> > > with makefiles that
> > > would leverage cross compilers to create a base
> > > system for target X on
> > > host Y?
> > > 
> > > It would make embedded development incredibly
> easy
> > > with cross compilers
> > > and base layout packages of that sort ready to
> be
> > > emerged into /opt or
> > > something like that.
> > > 
> > > Thanks,
> > > Anthony
> > > 
> > > On Tue, 2005-04-12 at 08:29 -0700, Quentin Arce
> > > wrote:
> > > > 
> > > > One thing you may want to keep in mind when
> > > building
> > > > your system is to make sure all bins are
> > stripped.
> > > 
> > > > Also, some embedded companies have tools which
> > > > determine which libs are being used on the
> > system
> > > and
> > > > remove all others from the final image.  Just
> to
> > > > squeeze that last bit of space out.
> > > > 
> > > > Also, don't forget to remove all other
> un-needed
> > > > files.  Like /var/db, all man, etc.
> > > > 
> > > > Q
> > > > 
> > > > 
> > > > --- Anthony Russello <arussello@rogers.com>
> > wrote:
> > > > > Hi All,
> > > > > 
> > > > > I'm working on a base layout for an embedded
> > > system
> > > > > based on the
> > > > > Freescale 8241 chip, and was wondering what
> > > might be
> > > > > available in the
> > > > > world of gentoo for that purpose.
> > > > > 
> > > > > Here are the requirements we've laid out:
> > > > > 
> > > > > Read/write /etc (jffs2 filesystem)
> 
=== message truncated ===



		
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Re: [gentoo-embedded] PPC embedded base package

[Anthony Russello]

Hi Quentin,

Thank you very much!

I'll give this a try tonight to see how well I can do
with it instead of my home rolled stuff.

Cheers,
Anthony

 --- Quentin Arce <qarce@yahoo.com> wrote: 
> 
> --- Anthony Russello <arussello@rogers.com> wrote:
> 
> > Hi Quentin,
> > 
> > Thanks for getting back to me.
> > 
> > Currently I'm working on the third option you
> listed
> > below.  I've actually been building a base system
> > completely from scratch, utilizing busybox, glibc,
> > boa,  samba 2.2.x, and sysvinit for the core apps.
> > 
> > What I was hoping was that there would already be,
> > at
> > the very least, a package that would contain the
> > rootfs, device nodes, etc.
> 
> So you want the ppc stage1 or stage2 tarball for
> this.
>  It will need to be stripped out.... or you can just
> setup a chroot build env... search for uclibc gentoo
> in the forums or on the web.  I don't see the
> webpage
> still up... hmmm. must have closed it... 
> 
> So, use a stage3 x86 tarball, untar into some big
> devel space.
> 
> mount/bind proc & dev
> 
> fix up etc/mtab to be correct.
> 
> write a script something like
> 
> mount -o bind /dev /path/to/devel/dev
> mount -t proc proc /path/to/devel/proc
> 
> chroot /path/to/devel /bin/bash
> 
> umount  /path/to/devel/dev
> umount  /path/to/devel/proc
> 
> Perhaps add some locking to keep from running this
> twice ;-)
> 
> once in devel space.  emerge sync, emerge --update
> --deep world.  Build the cross compiler per cross
> build howto which can be found in the forums.
> 
> setup your make.conf for the cross env or write a
> wrapper script to emerge to set the
> ROOT=/new/ppc/fs/relative/to/devel/rootfs
> PATH=/path.../see/cross/build/notes emerge
> baselayout-lite busybox boa foo
> 
> Have some lunch... check on the progress.  Depending
> on your build host, start testing or go home for the
> day.
> 
> 
> Come back, NFS mount and test your system.  Write a
> script to clone the rootfs you just built
> 
> rsync  /path/to/devel/opt/ppcrootfs /tmp/scratchroot
> rm somelistoffiles
>   (have a look at the Catalyst scripts and then add
> some more as needed)
> 
> See how small of a fs you can get.
> 
> Don't forget to creat all of the symbolic links for
> busybox.  You may need to inject a package to fool
> portage into thinking you have the basic unix utils
> packages already installed.
> 
> Then you should be just about all set.
> 
> Note: you really want the baselayout lite as you
> don't
> want to full runlevels system in an embedded app. 
> Just a simple set of init scripts.  Note, you can
> also
> use busybox for your init.  This is what freescale
> does.
> 
> From there you can do almost anything.
> 
> Just remember to save all packages for the future. 
> You may need to re-create all of your work in say 2
> years to fix a bug for a client.  Backups are your
> friend.
> 
> Have fun.
> 
> Q
> 
> 
> 
> 
> > Also, I saw recent work on adding emerge to
> busybox,
> > which would be handy during initial development
> > (chroot'ing into the rootfs, and then using the
> > busybox emerge to install some packages).
> > 
> > Any thoughts on this?
> > 
> > Thanks,
> > Anthony
> > 
> >  --- Quentin Arce <qarce@yahoo.com> wrote: 
> > > 
> > > 
> > > Anthony,
> > > 
> > > I have looked at this in my work and at home. 
> > Work
> > > we
> > > have used the 8248 and 8245.  Home, I am working
> > on
> > > a
> > > small x86 based system.  Gentoo will work for
> your
> > > target... but, you really want to think about if
> > you
> > > should.  Think long term support.  Also, think
> > about
> > > the build system, stability.  In working on my
> own
> > > mini x86 based linux distro based on Gentoo...
> So,
> > > far... you can do it.  You can cross compile it,
> > > but,
> > > there are still some packages that don't seem to
> > > work
> > > just yet.  You want the base layout lite.  And
> you
> > > want a system based on Busybox for the size you
> > are
> > > targeting.  Check out the portage profiles:
> > > 
> > > /usr/portage/profiles/embedded
> > > /usr/portage/profiles/uclibc
> > > /usr/portage/profiles/default-ppc-2004.3
> > > 
> > > I am now using the uclibc for my x86 project.  I
> > > used
> > > the default-ppc-2004.3 to build a 8248 rootfs. 
> > The
> > > size was way too big to be burned into the flash
> > > though.  
> > > 
> > > You could come up with your own custom profile,
> > > inject
> > > any packages you need and then you could use
> > > portage.
> > > 
> > > OR
> > > 
> > > You could use something like Debian to build a
> > mini
> > > root and strip it of all cruft.  (hint, hint) 
> You
> > > could even do this on an x86 system and then
> write
> > a
> > > few scripts to fix the post scripts from the deb
> > > install. (hint hint)  Then just sync the built
> > root
> > > to
> > > another directory, clean the clone and build a
> > jffs2
> > > image.
> > > 
> > > OR
> > > 
> > > You can go the full custom route via LFS or your
> > own
> > > home grown.
> > > 
> > > 
> > > I have learned quite a bit since I started with
> > ppc
> > > embedded.  I'm still learning with mini x86.
> > > 
> > > Q
> > > 
> > > 
> > > 
> > > --- Anthony Russello <arussello@rogers.com>
> wrote:
> > > > Hi,
> > > > 
> > > > Thanks for the reply, I'm sorry it took so
> long
> > to
> > > > get back to you, but
> > > > I never received an email to me until the
> digest
> > > > caught up.
> > > > 
> > > > We're working on a small NAS-like device. 
> Very
> > > > light weight, and
> > > > targetting to consumers rather than
> businesses,
> > so
> > > > everything will be
> > > > pretty simple.
> > > > 
> > > > I'm currently working on getting a 2.6.x
> kernel
> > up
> > > > on the early boards.
> > > > Once that's up and running, I'll be working on
> > the
> > > > rootfs.  I've been
> > > > doing a lot of checking as far as dependencies
> > go,
> > > > and I've got the
> > > > libraries narrowed down substantially.  We're
> > also
> > > > using the 2.2.x samba
> > > > branch, since the 3.x branch requires a large
> > > number
> > > > of libraries that
> > > > we don't want to include.
> > > > 
> > > > I've been ensuring that every binary going
> into
> > > the
> > > > image is stripped so
> > > > far as well.
> > > > 
> > > > I guess I was kind of hoping that the gentoo
> > > > embedded group was working
> > > > with small root filesystem sizes, and whether
> or
> > > not
> > > > there was a base
> > > > layout package that would simply contain
> things
> > > like
> > > > pre-populated /dev,
> > > > and other absolutely essential sources like
> > that.
> > > > 
> > > > Are there any plans for such a package? 
> Perhaps
> > > > with makefiles that
> > > > would leverage cross compilers to create a
> base
> > > > system for target X on
> > > > host Y?
> > > > 
> > > > It would make embedded development incredibly
> > easy
> > > > with cross compilers
> > > > and base layout packages of that sort ready to
> > be
> > > > emerged into /opt or
> > > > something like that.
> > > > 
> > > > Thanks,
> > > > Anthony
> > > > 
> > > > On Tue, 2005-04-12 at 08:29 -0700, Quentin
> Arce
> > > > wrote:
> > > > > 
> > > > > One thing you may want to keep in mind when
> > > > building
> > > > > your system is to make sure all bins are
> > > stripped.
> > > > 
> > > > > Also, some embedded companies have tools
> which
> > > > > determine which libs are being used on the
> > > system
> > > > and
> > > > > remove all others from the final image. 
> Just
> > to
> > > > > squeeze that last bit of space out.
> > > > > 
> > > > > Also, don't forget to remove all other
> > un-needed
> > > > > files.  Like /var/db, all man, etc.
> > > > > 
> > > > > Q
> > > > > 
> > > > > 
> > > > > --- Anthony Russello <arussello@rogers.com>
> > > wrote:
> > > > > > Hi All,
> > > > > > 
> > > > > > I'm working on a base layout for an
> embedded
> > > > system
> > > > > > based on the
> > > > > > Freescale 8241 chip, and was wondering
> what
> > > > might be
> > > > > > available in the
> > > > > > world of gentoo for that purpose.
> > > > > > 
> > > > > > Here are the requirements we've laid out:
> > > > > > 
> > > > > > Read/write /etc (jffs2 filesystem)
> > 
> === message truncated ===
> 
> 
> 
> 		
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Re: [gentoo-embedded] PPC embedded base package

[Quentin Arce]

One thing you may want to keep in mind when building
your system is to make sure all bins are stripped. 
Also, some embedded companies have tools which
determine which libs are being used on the system and
remove all others from the final image.  Just to
squeeze that last bit of space out.

Also, don't forget to remove all other un-needed
files.  Like /var/db, all man, etc.

Q


--- Anthony Russello <arussello@rogers.com> wrote:
> Hi All,
> 
> I'm working on a base layout for an embedded system
> based on the
> Freescale 8241 chip, and was wondering what might be
> available in the
> world of gentoo for that purpose.
> 
> Here are the requirements we've laid out:
> 
> Read/write /etc (jffs2 filesystem)
> /var is a ramdisk, /tmp is a symlink to /var/tmp
> / is read only otherwise (cramfs filesystem)
> 
> As far as apps, we basically just need:
> 
> boa
> busybox
> samba 2.2.x (samba 3 requires additional libraries
> in the final image)
> sysvinit
> sqlite
> quota-tools
> sys-utils
> e2fsprogs
> 
> Now, we created one a while back using an axis chip,
> and they had a full
> development package that we just modified as needed.
>  In the end we
> wound up with an image that had about 2 MB left over
> of the eight.
> RIght now, we're kind of starting fresh with an 8241
> based system, so I
> wanted to get some input on what recommendations you
> might have.
> 
> I've already been playing around with a custom thing
> from the ground up.
> But just in case, I'd like to see if there is
> something else we could
> look into.
> 
> I've been using gentoo for quite some time now
> (since the 1.4 days) but
> I haven't been following the gentoo embedded list
> for the most part.
> 
> Cheers,
> Anthony
> 
> --
> gentoo-embedded@gentoo.org mailing list
> 
> 



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Re: [gentoo-embedded] PPC embedded base package

[Anthony Russello]

Hi,

Thanks for the reply, I'm sorry it took so long to get back to you, but
I never received an email to me until the digest caught up.

We're working on a small NAS-like device.  Very light weight, and
targetting to consumers rather than businesses, so everything will be
pretty simple.

I'm currently working on getting a 2.6.x kernel up on the early boards.
Once that's up and running, I'll be working on the rootfs.  I've been
doing a lot of checking as far as dependencies go, and I've got the
libraries narrowed down substantially.  We're also using the 2.2.x samba
branch, since the 3.x branch requires a large number of libraries that
we don't want to include.

I've been ensuring that every binary going into the image is stripped so
far as well.

I guess I was kind of hoping that the gentoo embedded group was working
with small root filesystem sizes, and whether or not there was a base
layout package that would simply contain things like pre-populated /dev,
and other absolutely essential sources like that.

Are there any plans for such a package?  Perhaps with makefiles that
would leverage cross compilers to create a base system for target X on
host Y?

It would make embedded development incredibly easy with cross compilers
and base layout packages of that sort ready to be emerged into /opt or
something like that.

Thanks,
Anthony

On Tue, 2005-04-12 at 08:29 -0700, Quentin Arce wrote:
> 
> One thing you may want to keep in mind when building
> your system is to make sure all bins are stripped. 
> Also, some embedded companies have tools which
> determine which libs are being used on the system and
> remove all others from the final image.  Just to
> squeeze that last bit of space out.
> 
> Also, don't forget to remove all other un-needed
> files.  Like /var/db, all man, etc.
> 
> Q
> 
> 
> --- Anthony Russello <arussello@rogers.com> wrote:
> > Hi All,
> > 
> > I'm working on a base layout for an embedded system
> > based on the
> > Freescale 8241 chip, and was wondering what might be
> > available in the
> > world of gentoo for that purpose.
> > 
> > Here are the requirements we've laid out:
> > 
> > Read/write /etc (jffs2 filesystem)
> > /var is a ramdisk, /tmp is a symlink to /var/tmp
> > / is read only otherwise (cramfs filesystem)
> > 
> > As far as apps, we basically just need:
> > 
> > boa
> > busybox
> > samba 2.2.x (samba 3 requires additional libraries
> > in the final image)
> > sysvinit
> > sqlite
> > quota-tools
> > sys-utils
> > e2fsprogs
> > 
> > Now, we created one a while back using an axis chip,
> > and they had a full
> > development package that we just modified as needed.
> >  In the end we
> > wound up with an image that had about 2 MB left over
> > of the eight.
> > RIght now, we're kind of starting fresh with an 8241
> > based system, so I
> > wanted to get some input on what recommendations you
> > might have.
> > 
> > I've already been playing around with a custom thing
> > from the ground up.
> > But just in case, I'd like to see if there is
> > something else we could
> > look into.
> > 
> > I've been using gentoo for quite some time now
> > (since the 1.4 days) but
> > I haven't been following the gentoo embedded list
> > for the most part.
> > 
> > Cheers,
> > Anthony
> > 
> > --
> > gentoo-embedded@gentoo.org mailing list
> > 
> > 
> 
> 
> 
> __________________________________________________
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[gentoo-embedded] PPC embedded base package

[Anthony Russello]

Hi All,

I'm working on a base layout for an embedded system based on the
Freescale 8241 chip, and was wondering what might be available in the
world of gentoo for that purpose.

Here are the requirements we've laid out:

Read/write /etc (jffs2 filesystem)
/var is a ramdisk, /tmp is a symlink to /var/tmp
/ is read only otherwise (cramfs filesystem)

As far as apps, we basically just need:

boa
busybox
samba 2.2.x (samba 3 requires additional libraries in the final image)
sysvinit
sqlite
quota-tools
sys-utils
e2fsprogs

Now, we created one a while back using an axis chip, and they had a full
development package that we just modified as needed.  In the end we
wound up with an image that had about 2 MB left over of the eight.
RIght now, we're kind of starting fresh with an 8241 based system, so I
wanted to get some input on what recommendations you might have.

I've already been playing around with a custom thing from the ground up.
But just in case, I'd like to see if there is something else we could
look into.

I've been using gentoo for quite some time now (since the 1.4 days) but
I haven't been following the gentoo embedded list for the most part.

Cheers,
Anthony

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Re: [gentoo-embedded] PPC embedded base package

[Ned Ludd]

On Mon, 2005-04-11 at 21:43 -0400, Anthony Russello wrote:
> Hi All,
> 
> I'm working on a base layout for an embedded system based on the
> Freescale 8241 chip, and was wondering what might be available in the
> world of gentoo for that purpose.
> 
> Here are the requirements we've laid out:
> 
> Read/write /etc (jffs2 filesystem)
> /var is a ramdisk, /tmp is a symlink to /var/tmp
> / is read only otherwise (cramfs filesystem)
You could go with squashfs here and save quite a bit more space.

> As far as apps, we basically just need:
> 
> boa
boa is nice. note also busybox has an httpd that's cgi aware.

> busybox 
By default our busybox is built with allsysconfig this enables most tools.

> samba 2.2.x (samba 3 requires additional libraries in the final image)


> sysvinit

I'm pretty sure you don't really need sysvinit with this kind of setup.
The init provided by busybox itself should be adequately sufficient.

> sqlite
> quota-tools

> sys-utils
Whats sys-utils?

> e2fsprogs
For mke2fs/tune2fs?

For jffs2 your going to want/need the sys-fs/mtd package as well.


> Now, we created one a while back using an axis chip, and they had a full
> development package that we just modified as needed.  In the end we
> wound up with an image that had about 2 MB left over of the eight.
> RIght now, we're kind of starting fresh with an 8241 based system, so I
> wanted to get some input on what recommendations you might have.
> 


> I've already been playing around with a custom thing from the ground up.
> But just in case, I'd like to see if there is something else we could
> look into.

i think that's how most of us got here. It's fun todo the super custom
ground up system for a little while. But it's nice to walk away and come
back 6 months or a year and not have to update every 

> I've been using gentoo for quite some time now (since the 1.4 days) but
> I haven't been following the gentoo embedded list for the most part.
> 
> Cheers,
> Anthony
> 
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> gentoo-embedded@gentoo.org mailing list
> 
-- 
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