Linux ppc newbie boot sequense

Linux ppc newbie boot sequense

[Francois Guimond]

Excuse me for de obivious question, but I am a newbie...

I am trying to install a linux kernel on MPC8240 cpu in a limited flash
space.
(Motorola sandpoint evaluation platform 512kb flash 32MB ram and dink32
software)

I have got a PPC zImage compiled.

My question is what do I put at First Instruction?
Do I need Lilo?
Where is the first instruction of the kernel in a zImage?

I want only serial console first.

Because there is no CPM  in it, I wanted to postpone the networking
features.
It means no root over nfs...

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Re: Linux ppc newbie boot sequense

[Dan Malek]

Francois Guimond wrote:


> I am trying to install a linux kernel on MPC8240 cpu in a limited flash
> space.
> (Motorola sandpoint evaluation platform 512kb flash 32MB ram and dink32
> software)


OK, I guess it is time to post what I have.  This is kinda, sorta running.

> I have got a PPC zImage compiled.

Unless you make a few changes in arch/ppc/kernel, including creating
some 8240 specific start up functions, it won't matter where you
place the First Instruction :-).


> Because there is no CPM  in it, I wanted to postpone the networking
> features.
> It means no root over nfs...

No, this works fine with a PCI Ethernet card.

Since the 8240/Sandpoint has such a small flash rom, it is your
only choice.  There isn't room to store a Linux kernel or compressed
ram disk.  You have to download the kernel over the serial port and
use diskless NFS.  Even though it has a standard IDE and floppy
interface, there are no provisions in Dink to load an image from
these.......Guess it is time to write yet another Linux flash rom.


	-- Dan

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Re: Linux ppc newbie boot sequense

[Francois Guimond]

Dan Malek wrote:

> Francois Guimond wrote:
>
> > I am trying to install a linux kernel on MPC8240 cpu in a limited flash
> > space.
> > (Motorola sandpoint evaluation platform 512kb flash 32MB ram and dink32
> > software)
>
> OK, I guess it is time to post what I have.  This is kinda, sorta running.
>

What have you got?

Thanks for the clues!

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Re: Linux ppc newbie boot sequense

[Dan Malek]

Francois Guimond wrote:


> What have you got?

An 8240/Sandpoint that will boot up using a PCI Ethernet card
and will use an NFS root file system.  The console doesn't work
properly because I didn't finish the 8259 interrupt controller
code.  You can start up Apache, inetd, and do everything over
the network.

I'll try to get it checked into the latest 2.3.xx source tree
(it is based on 2.3.16) over our Thanksgiving holiday weekend.


	-- Dan

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