[oe] Porting OE to new hardware

[Bernard Mentink]

Thanks Khem,

That helps a lot. On the kernel config issue there is one thing I don't
understand.

I have set up to do an ARM  i.mx31 build, but when I did a "make menuconfig"
in the /build/tmp/.../kernelxxxxx directory, it only shows x86 options, I
don't know where all the i.mx31 kernel options are.

Thanks,
Bernie

On Wed, Mar 31, 2010 at 7:03 AM, Khem Raj <raj.khem at gmail.com> wrote:

> On Mon, Mar 29, 2010 at 12:29 PM, Bernard Mentink <bmentink at gmail.com>
> wrote:
> > Hi All,
> >
> > I am jumping across to this email list as the user one has very little
> > traffic.
> >
> > I have just found OE and would like to use it to get Linux up and running
> on
> > some custom hardware. The hardware is currently running the logicloader
> > bootloader from LogicPD and a YAFFS2 filesystem.
> >
> > I have found very little info on the steps necessary to port to new
> > hardware. As far as OE is concerned, I have built an image after altering
> > the MACHINE and DISTRO to something close to what I need.
> > I now have a zimage (kernel) and a rootFS.
> >
> > However I have a number of questions:
> >
> > 1. To boot with zimage with  logicloader, I have to load the image into
> > memory at an address, and then execute it at the start code which I
> presume
> > is an offset the start of the image. Can anyone tell me how I can find
> > the relevant map file to work out
> > what offset I need to apply? I did a search for *.map files in the
> build/tmp
> > direcory and found nada ..
>
> this post tells how to load linux kernel using logicloader. It might help
> you.
>
> http://forums.freescale.com/t5/Other-Microcontrollers/load-zImage-or-vmlinux-using-LogicLoader/td-p/32749;jsessionid=F6F40E5BF81249CFF86028A7AB86DE29
>
> >
> > 2. How do I do a kernel config? Is there an option to pass to bitbake to
> do
> > that, or do I have to find the kernel source and do it manually, then
> > rebuild with bitbake?
>
> You can copy the .config you want into
> recipes/linux/<chosen-kernel-version>/<machine>/defconfig file and it
> will use
> it to build the kernel for you machine. You can also edit the .config
> on fly search the ml on how to do it.
>
> >
> > 3. What src files in the kernel do I need to to maybe alter to get the
> > serial port and memory map right for my target hardware ..
> >
>
> you can specify serial port in kernel commandline too unless your board
> needs
> a special handling of serial port.
>
> > 4. Once I get the kernel booting, I need it to load the rootfs, initially
> I
> > can boot that from NFS, but I would like to eventually load it from my
> YAFFS
> > NAND partition, how do I do that?
>
> you can do that thru kernel commandline.
>
> >
> >
> > Hope someone can give me some pointers in the right direction ... I would
> > love to kick off WinCE from this hardware ;-)
> >
> > Cheers,
> > Bernie
> >
> > --
> > You always have believers and scepticts.. A True inventor is always a
> > believer..
> > _______________________________________________
> > Openembedded-devel mailing list
> > Openembedded-devel at lists.openembedded.org
> > http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
> >
>
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>



-- 
You always have believers and scepticts.. A True inventor is always a
believer..