Gentoo Archives: gentoo-embedded

From: Daniel <dragonheart@×××××××.au>
To: Goran Kavrecic <gorank@×××××.si>, gentoo-embedded@l.g.o
Subject: Re: [gentoo-embedded] Advantech PCM-3350, linux box, boot from CF
Date: Fri, 09 Jan 2004 04:04:29
Message-Id: 200401091229.44119.dragonheart@tpg.com.au
In Reply to: Re: [gentoo-embedded] Advantech PCM-3350, linux box, boot from CF by Daniel
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On Sat, 13 Dec 2003 02:24 am, you wrote:
> > > I plan to boot everything from the CompactFlash card (128MB). I also > > > installed 256MB RAM. I will use an I/O and a multiport RS232 card. > > > > > > > > > I already tried some installations(basically started with slackware, > > > but also tried others) but always failed. It boots ok into DOS but > > > fails booting with LiLo(it returned LI 04 - which shall be "sector not > > > found"). It runs ok if I boot from a rescue floppy and the chroot to > > > CF's /. > > > > Be very careful with your lilo options. Make sure the specify what the > > boot device is at bootup (not /dev/sda1 when its attached to you card > > read/ writer). I remeber I did something with the bios=0x84(?) options in > > lilo to make it work (I had a harddrive and a compact flash to that may > > of been related). I'll email my former collegue to attempt to obtain the > > lilo configuration. I do remember facing a similar problem. lba related > > maybe but I can't remember exactly. > > OK, I actually made it to install lilo on /dev/sda1 (while on desktop > machine). in lilo.conf everything was /dev/hda1 as will be on the > industrial box. lilo was called with -b boot-dev witch overides the > current settings. If lilo started, then this should be ok? >
The lilo conf from when I used it boot="/dev/hdc" map=/boot/map install=/boot/boot.b prompt timeout="50 compact disk=/dev/hdc bios=0x80 serial=1,9600b8 append="console=tty0 console=ttyS1,9600n8" default="linuxr" password="pass" restricted image="/boot/bzImage" label=linuxr root=dev/hdc1 The lilo -b may tell it where to write the image but the config file tells it how what is layed out where when it is installed. The bios=0x80 fixed the problem with the LI 04 for me. I was using a compact flash and a harddrive and booting off the compact flash.
> > > Now, I have a Gentoo 1.4 running working machine (freshly installed
snip
> I think RAM shouldn't be a problem. I wouldn't like to write too much on > the CF or is the number of writes nowadays unlimited?
Good move. Comment out bits of the bootup process that write to disk and when you think your complete - change the fstab to mount readonly and see what you missed.
> > > I would mount the CF for writing settings and some > > > info. > > > At the end I would like to have the major work done on the PC/desktop > > > and only finalize/debug on the PC/104 box. > > > Don't need fancy things, just working environment. It won't have a > > > standard display/keyboard on runtime, anyway. > > > > Look at the serial conole options for the kernel and lilo if you havent' > > already.
there is the config for it above.
> > > How would "crossdev-0.2", "base-layout lite", "uclibc buildroot/ > > > toolchain", ... help in this process? How to get them? > > > > crossdev = emerge crossdev > > This is then the only one. > Are out there others, I only mentioned the ones mentioned on the list > last days?
I the others are work in progress.
> Doesn't want to emerge. It says it is masked. (sorry, new to gentoo) > I read somewhere about masked. > Where can I read more on that 'masked' stuff? And how to get it down?
env ACCEPT_KEYWORDS="~x86" emerge .....
> > uclibc buildroot = still being worked on although there is an exampe in > > bug 29312 (http://bugs.gentoo.org/show_bug.cgi?id=29312) > > base-layout lite = still in design phases. > > > > If your arch is the same on both machines. Compile binary packages with > > the correct optimisations and to a binary install onto the compact flash. > > Use the "env ROOT=(CF mount point)" to install them. Always do a pretend > > first as I have seen some occasion pecularities where it doesn;t want ot > > install to $ROOT (ref http://bugs.gentoo.org/show_bug.cgi?id=34887) > > > > To save disk space do a bind mount (or symlink) on the CF /usr/share/doc > > some other documentation directories (/usr/share/info /usr/share/man) to > > local disk space. > > info and man pages are not required.
Yep - this places these files in a different directory so they aren't copied.
> The user won't notice this is a computer - this a weighing machine with > some I/O. It shall be an industrial controller, then decided for linux > due to big number of serial ports, printing and later HTTP or FTP access > for displaying/downloading statistics and maybe(probably, just for the > fun of doing it) some web management. > Display is a 2x16 LCD just for current status, changing params and > major warnings. >
sounds good - -- Daniel Black - -- Proudly a Gentoo Linux User. GnuPG/PGP signed and encrypted email preferred http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x32A64DC8 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (GNU/Linux) iD8DBQE//hkcTDSbtjKmTcgRAiYjAJ92bud6ySqxeMNzJKfNJ2qNfwwgqACfcLxY 7wC0nKzypbBeVsawSzepl8g= =mfDr -----END PGP SIGNATURE----- -- gentoo-embedded@g.o mailing list