Re: [gentoo-embedded] Bootloader for Embedded System

["Sergi Castaño Elias" <pklst.embed.lin@gmail.com>]

Hi,

2006/3/29, Lutz Schönemann <lutz.schoenemann@sit.fraunhofer.de>:
> Okay, now Lilo loads the first stage and returns the error-code 99. The
> man-page contains a paragraph containing the error codes:
>         99  invalid second stage index sector
> and a detailed description:
> "... Errors 99 and 9A usually mean the map file (-m or map=) is not
> readable, likely because LILO was not re-run after some system change,
> or there is   a geometry mis-match between what LILO used (lilo -v3 to
> display) and what is actually being used by the BIOS (one of the lilo
> diagnostic disks, available in the source distribution, may be needed to
> diagnose this problem). ..."
>
> But how can I get the right device-map needed for my embedded system? I
> tried to create a CF card with the diagnostic disks data (writing on CF
> instead of wirting to /dev/sd0) but the system doesn't even boot with
> this CF-Card.
>
> Lutz
>
> Ned Ludd wrote:
> > I always used lilo for this task. I found grub to be way to problematic
> > and BIG. On x86 I'd chroot into the CF and run lilo. It can be tricky
> > and a tad confusing at times till you make that mental map of where the
> > devices live. Note be careful or you could end up killing the wrong
> > boot sector or device.
> >
> > My CF was my /dev/sdb but CF is IDE so I needed a conf like this.
> > http://dev.gentoo.org/~solar/embedded/local/local/customize/etc/lilo.conf
> >
> > The kernel got installed to sdb1->hda1 and sdb2->hda2 was used as the
> > ROOT file system.
> >
> > I also used these two scripts to speed up the task.
> >
> > (Format the CF)
> > http://dev.gentoo.org/~solar/embedded/fdisk_cf_flash
> >
> > (Copy the FS to flash and run the bootloader)
> > http://dev.gentoo.org/~solar/embedded/flash_cf_disk
> >
> > .. good luck.
> >
> >
> >
> > On Tue, 2006-03-28 at 11:37 +0200, Lutz Schönemann wrote:
> >
> >>Hi,
> >>I'm trying to get Linux running on a x86 embedded-system (Panel PC
> >>"Atlas"). The os should be loaded from a CF-Card (CF-Card reader is
> >>onboard and bootable). My current problem with it is that I don't know
> >>how to get a bootloader installed on a CF-Card.
> >>I have a Gentoo-Box (Toshiba Laptop) compiled for i386. The CF-Card is
> >>connected via USB. When ever I install a bootloader on the CF-Card a
> >>Dell laptop is able to boot from it but the embedded system doesn't do
> >>it. It seems to be the problem that the two BIOS differ to much from
> >>each other.
> >>How can I install a bootloader that works on other hardware (with
> >>different BIOS)?
> >>
> >>Someone told me to build a very small kernel and put that into the
> >>master boot record (must be smaller than 446 bytes). How can I do this?
> >>I have deactivated nearly all features, compiled everything as module
> >>that could be build as module but the kernel size is 627k !?!
> >>
> >>For more information on the hardware:
> >>http://www.kws-computer.de/ppcatlas.html
> >>
> >>there is a link to the data sheet (Datenblatt)
> >>
> >>Thanks for help
> >>
> >>--
> >>Lutz Schönemann
> >>
> >>Addr: Fraunhofer Institut für Sichere Informations Technologie SIT
> >>      Rheinstrasse 75, 64295 Darmstadt, Germany
> >>WWW:  http://www.sit.fraunhofer.de
> >>
> >>Zertifizierungen in der FhG: http://pki.fraunhofer.de
>
>
> --
> Lutz Schönemann
>
> Addr:   Fraunhofer Institut für Sichere Informations Technologie SIT
>         Rheinstrasse 75, 64295 Darmstadt, Germany
> WWW:    http://www.sit.fraunhofer.de
>
> Zertifizierungen in der FhG: http://pki.fraunhofer.de
> --
> gentoo-embedded@gentoo.org mailing list
>
>

I would install or run lilo (or any other bootloader) from the
embedded system directly.

I mean, connect only one ide cd reader put CF in the ide reader at
embedded mainboard. No other device to damage its boot.
Then boot from an any live distro or a gentoo install boot cd itself
and chroot to embedded system.
Then, re-run lilo or install grub or any other boot manager.

Sorry my bad english.

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