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Old 19th March 2010
hackerman1 hackerman1 is offline
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Default NEC MobilePro 900C, which NetBSD-port ?

hi !

which NetBSD-port can be used on a NEC MOBILEPRO 900C with an Xscale (PXA255) CPU ?
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Old 19th March 2010
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I think NetBSD/evbarm
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Old 19th March 2010
BSDfan666 BSDfan666 is offline
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The problem with ARM is there is no 'generic' platform, devices tend to differ considerably.. so drivers have to be written.

Just because they support the PXA255 XScale processor doesn't mean they support this device.

I found a small mention of it on an NetBSD mailing list, but that's about it.

http://mail-index.netbsd.org/port-hp...2/04/0000.html
http://mail-index.netbsd.org/port-hp...2/04/0001.html

Hope that helps.
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Old 19th March 2010
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@BSDfan666

Yes true. That port doens't have to support on board devices (apart CPU). Anyway that port supports PXA255 XScale. There is a chance it will work.
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Old 19th March 2010
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There is a chance that that it might, sure.. but just because they have kernel support for the processor and a toolchain that can generate code, does not mean it's a supported device.

Boostrapping as an example, unlike an x86.. this device might have a proprietary mechanism for whatever NEC supplied operating system is preloaded, so the developers may have discover a way to execute their boot code and load the kernel.

What about output? a driver for the LCD? if no LCD, they would need a way of displaying output.. a serial port maybe, this could require disassemling the device to gain access to the pins.

It's not enough to support the processor, even with the BSD's attempt at "generic" ARM targets (armish/evbarm/etc).. some device specific code is almost always required.
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Old 20th March 2010
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@BSDfan666

100% agreed. But anyway I would like to see it working. I think that LCD might work- it is EPSON 13806 chipset and it is supported by xorg (or at least should be).

Code:
commit cbd5fbcb7e5b802cbcff317fdc2f848043207690
Author: Phil Blundell <pb@reciva.com>
Date:   Wed Oct 20 08:20:51 2004 +0000

    Import Epson 13806 driver from Costas Stylianou:
    New files.
BTW, this device is able to run linux:

HTML Code:
http://www.belxs.com/michel/mp900/LinuxonMobilepro900.htm
HTML Code:
http://www.hpcfactor.com/forums/forums/thread-view.asp?tid=8389&start=1
HTML Code:
http://jlime.com/mw4/index.php/Hardware_documentation_mp900c_jtag
HTML Code:
http://www.jlime.com/forum/index.php
So linux is working somehow.

Sometime I doubt in portability of NetBSD ;-)

Perhaps an author could ask for lspci from working linux system on that device- that would help maybe.

Maybe we should call some NetBSD developers to work on that device.


Goodluck hackerman1 !
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Old 20th March 2010
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The portability of BSD/NetBSD isn't in question here, someone has to do the work.. and they have to be motivated to do it.

Getting the device in the hands of a few developers can never hurt, "lspci" will only show devices on a PCI bus.. critical integrated components on ARM platforms are typically not PCI.
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