Motorola MPC8240 Sandpoint embedded linux

Motorola MPC8240 Sandpoint embedded linux

[Nye Liu]

I have just started work on the MPC8240 Sandpoint platform (its
basically an 603e with some integrated peripherals) but this is my first
try at embedded linux devel. I have plenty of experience getting psos
and vxworks running on a few different processors, but I am unfamiliar
with the internals of how linux is booted.

I'm using ESTC's cheapo visionICE emulator solution, and would
appriciate any help with getting this thing up and running.

The main problems that I see are:

Its not CHRP or PREP.

No prom, so i need to:
Set up the memory map.
Program the EPIC.

Verify that the current serial drivers work with the Sandpoint's NS
PC87308.

Please email me directly, as I am not subscribed to this list, although
i do read it regularly on the linuxppc site.

nyet@nbase.com


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Re: Motorola MPC8240 Sandpoint embedded linux

[Geert Uytterhoeven]

On Fri, 18 Jun 1999, Nye Liu wrote:
> Verify that the current serial drivers work with the Sandpoint's NS
> PC87308.

Shouldn't be a problem, since my LongTrail also has a PC87308. It's a fairly
standard Super I/O with builtin NS16550 serial ports.

Greetings,

						Geert

--
Geert Uytterhoeven                     Geert.Uytterhoeven@cs.kuleuven.ac.be
Wavelets, Linux/{m68k~Amiga,PPC~CHRP}  http://www.cs.kuleuven.ac.be/~geert/
Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium


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Re: Motorola MPC8240 Sandpoint embedded linux

[Bob Doyle]

Nye Liu wrote:
> 
> I have just started work on the MPC8240 Sandpoint platform (its
> basically an 603e with some integrated peripherals) but this is my first
> try at embedded linux devel. I have plenty of experience getting psos
> and vxworks running on a few different processors, but I am unfamiliar
> with the internals of how linux is booted.

I've got one too.  I'm a newbie with the ppc so this is my platform to
learn things.  I've mostly got a working VGA display configured and
running...

> I'm using ESTC's cheapo visionICE emulator solution, and would
> appriciate any help with getting this thing up and running.

The jury is still out on the ESTC emulator...
 
> The main problems that I see are:
> 
> Its not CHRP or PREP.
> 
> No prom, so i need to:
> Set up the memory map.
> Program the EPIC.

Dink does all that for you.  How 'bout booting linux from dink
until linux is running?  Then go back remove dink and fix the
startup stuff.

> Verify that the current serial drivers work with the Sandpoint's NS
> PC87308.

The code in dink has code to initialize the two serial ports.

If you want to get the floppy, mouse, keyboard, parallel ports, etcs
going you've got to configure the '87308 for that.  It looks like all
you have to do is provide the base addresses for the peripherals
to the '87308.

I couldn't find docs on National's website for the '87308 but I was
able to get the floppy going by just reading the dink code.  Anybody
know where to get docs?

I was considering patching dink to add a command that would copy a
floppy into memory.  That might ease hacking.

> Please email me directly, as I am not subscribed to this list, although
> i do read it regularly on the linuxppc site.
> 
> nyet@nbase.com

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Re: Motorola MPC8240 Sandpoint embedded linux

[Geert Uytterhoeven]

On Sat, 19 Jun 1999, Bob Doyle wrote:
> > Verify that the current serial drivers work with the Sandpoint's NS
> > PC87308.
> 
> The code in dink has code to initialize the two serial ports.
> 
> If you want to get the floppy, mouse, keyboard, parallel ports, etcs
> going you've got to configure the '87308 for that.  It looks like all
> you have to do is provide the base addresses for the peripherals
> to the '87308.
> 
> I couldn't find docs on National's website for the '87308 but I was
> able to get the floppy going by just reading the dink code.  Anybody
> know where to get docs?

I have the doc in PDF format. Let me know if you want a copy by email. I don't
have the CD with the doc at hand, but I can send it tomorrow.

Greetings,

						Geert

--
Geert Uytterhoeven                     Geert.Uytterhoeven@cs.kuleuven.ac.be
Wavelets, Linux/{m68k~Amiga,PPC~CHRP}  http://www.cs.kuleuven.ac.be/~geert/
Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium


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