Re: [gentoo-embedded] x86 SBC Gentoo Embedded HowTo version 0.06 (almost finished)

Thanks Quentin,

That was exactly it! In my grub.conf I had the root partition wrong.

Now it boots, and I'm on to my next mission: Add wireless tools to
support my wireless network card (D-Link DWL-520)

Michael


On Tue, 14 Jun 2005, Quentin Arce wrote:

>
>
> --- michael@×××××××××××××.com wrote:
>
>> Hi Yuri, Heath, Gentoo-embedded folks:
>>
>> I've taken your suggestion, Heath, and built a 2.6
>> kernel (instead of
>> the 2.4 I made by accident), and I've followed
>> version 0.6 of your HOWTO
>> with Yuri's comments.
>>
>> Grub loads, finds the kernel, and booting starts,
>> but it doesn't go all
>> the way:
>>
>>  	warning: unable to open an initial console
>>  	kernel panic: no init found
>
> I had this exact error for a while with a 2.6 kernel
> and using syslinux to boot.  It turned out I had the
> wrong root device.  The naming changed between my
> image build system and the real system.  I'm assuming
> you are building an embedded system for some old
> hardware and it's not really an embedded system.
>
> my 1.5 cents
> Q
>
>> (That's not an exact quote). I've checked that my
>> kernel's .config
>> includes consoles, and that /dev/console exists and
>> is linked to
>> character device 5,1.
>>
>> I haven't done a whole lot of research into this yet
>> but wonder if
>> anything springs to your collective minds.
>>
>> As usual, any comments appreciated and any
>> suggestions entertained.
>>
>> Michael
>>
>>
>> On Mon, 6 Jun 2005, Yuri Vasilevski wrote:
>>
>>> Hi,
>>>
>>> On Mon, 6 Jun 2005 10:03:26 -0500
>>> Heath H Holcomb <liquidcable@×××××.com> wrote:
>>>
>>>> Version 0.06
>>>> Please add, delete, modify. Thanks!
>>>
>>> Just some things that came to my mind with respect
>> to this
>>> version.
>>>
>>>> This procedure produces a working embedded
>> rootfs, that boots form a hard
>>>> drive on a Geode based SBC (single board
>> computer); at least on my
>>>> development system.
>>>>
>>>> I've update my website with this version also.
>>>> http://www.bulah.com/embeddedgentoo.html
>>>>
>>>>
>>>>
>>
> #--------------------------------------------------------------------------------
>>>> # Embedded Gentoo How-To for x86
>>>> #
>>>> # A how-to guide to setup a Gentoo embedded
>> environment, you must be root.
>>>> # These commands are to be run on your
>> development system,
>>>> # any x86 Gentoo Linux computer will do.  The
>> system should be fast,
>>>> # to speed development.  The target can be any
>> x86 based SBC.  I'm
>>>> # using a Geode based SBC.  Latter I'll use a Via
>> based SBC.
>>>> #
>>>> # version 0.06
>>>> # 2005.6.6
>>>> #
>>>> # Heath Holcomb (heath at bulah.com)
>>>> # Ned Ludd (embedded Gentoo project lead,
>> original commands posted)
>>>> # Lloyd Sargent (contributor)
>>>> # Yuri Vasilevshi (contributor)
>>>
>>> It's Vasilevski :-)
>>>
>>>> # Mike George (contributor)
>>>> # Kammi Cazze (contributor)
>>>> # Marius Schaefer (contributor)
>>>> #
>>>> # Definitions and Terms
>>>> # system_rootfs = your regular rootfs
>>>> # development_rootfs = what you use to build the
>> embedded_rootfs
>>>> # embedded_rootfs = rootfs you deploy to the
>> target system
>>>> # SBC = single board computer (here it's an x86
>> based)
>>>> #
>>>> # References
>>>> # http://www.gentoo.org/doc/en/handbook/index.xml
>>>> # http://www.epiawiki.org
>>>> # http://epia.kalf.org
>>>> # Gentoo embedded mailing list
>> (gentoo-embedded@l.g.o)
>>>> #
>>>> #
>>>> # Overview of process (steps)
>>>> # 1 - Prepare the development_rootfs from your
>> system_rootfs
>>>> # 2 - Build the development_rootfs
>>>> # 3 - Build the embedded_rootfs
>>>> # 4 - Build and install non-system programs to
>> the embedded_rootfs
>>>> # 5 - Build and install a kernel to the
>> embedded_rootfs
>>>> # 6 - Deploy embedded_rootfs to target
>>>> #
>>>>
>>
> #--------------------------------------------------------------------------------
>>>>
>>>> #----- Step 1 - Prepare the development_rootfs
>> from your system_rootfs -------
>>>>
>>>> # You must be root.
>>>> su -
>>>>
>>>> # Create the development_rootfs.
>>>> # I use i586 because of target is a Geode
>> processor.
>>>> mkdir -p
>> /opt/i586-gentoo-uclibc-linux/usr/portage
>>>>
>>>> # Download the latest stage 1 tarball.
>>>> wget \
>>>>
>>
> http://gentoo.osuosl.org/experimental/x86/embedded/stages/stage1-x86-uclibc-2005.0.tar.bz2
>>>>
>>>> # Untar the stage to the development_rootfs.
>>>> tar -xvjf stage1-x86-uclibc-2005.0.tar.bz2 -C
>> /opt/i586-gentoo-uclibc-linux/
>>>
>>> it should be tar -xvjpf ...
>>> where -p stands for --preserve-permissions
>>>
>>>>
>>>> # Mount the proc and portage directories to your
>> development_rootfs.
>>>> # Makes your system_rootfs's proc and portage
>> directory available from inside
>>>> # of your development_rootfs (after chrooting).
>>>> mount --bind /proc
>> /opt/i586-gentoo-uclibc-linux/proc/
>>>> mount --bind /usr/portage
>> /opt/i586-gentoo-uclibc-linux/usr/portage
>>>>
>>>> # Copy over DNS information to the
>> development_rootfs.
>>>> cp /etc/resolv.conf
>> /opt/i586-gentoo-uclibc-linux/etc/resolv.conf
>>>>
>>>> # Chroot into the development_rootfs.
>>>> chroot /opt/i586-gentoo-uclibc-linux /bin/bash
>> --login
>>>>
>>>>
>>>> #----- Step 2 - Build the development_rootfs
>> ---------------------------------
>>>>
>>>> # Create new environment and load variables into
>> memory.
>>>> env-update
>>>> source /etc/profile
>>>>
>>>> # Modify make.conf file to your liking/needs.
>>>> nano -w /etc/make.conf
>>>> # This is for my target, Geode x86 processor.
>>>> /*
>>>> USE="bitmap-fonts minimal truetype-fonts uclibc
>> mmx"
>>>
>>> The uclibc USE flag was obsoleted, see:
>>>
>>
> http://www.mail-archive.com/gentoo-embedded@l.g.o/msg00140.html
>>>
>>>> CHOST="i586-gentoo-linux-uclibc"
>>>> CFLAGS="-march=i586 -Os -pipe
>> -fomit-frame-pointer -mmmx"
>>>> CXXFLAGS="${CFLAGS}"
>>>> FEATURES="buildpkg"
>>>>
>>>> VIDEO_CARDS="chips"
>>>> UCLIBC_CPU="586MMX"
>>>> */
>>>>
>>>> # Set profile to use 2.6 kernel.
>>>> # The current stage uses 2.4 by default, and for
>> most cases you are going
>>>> # to want a 2.6.x kernel.
>>>> rm /etc/make.profile
>>>
>>> This are equivalent but I would use:
>>> unlink /etc/make.profile
>>> for clarity's sake.
>>>
>>>> ln -s /usr/portage/profiles/uclibc/x86
>> /etc/make.profile
>>
> === message truncated ===
>
>
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