Current status: WIP
More here: viewtopic.php?f=65&t=2646&p=11209#p11209

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I have Bsquare PHH, it has 128MB ram, 4 inch VGA screen, slider keyboard. Also GSM/GPRS module, connected (afair) to serial port. It's running on XScale PXA250 processor and some epson graphics. The old linux project for it stuck on nothing (here is the page - http://www.m-scene.de/maui/index.html ) - kernel boots but no fb, etc.

Today I found that PHH has got probably the same graphics as MP900 - and tried to use it's kernel and haret, the result is:


So framebuffer is working (hvga, as I see vga=0x311 in command line don't work) and kernel boots, but found no rootfs (that's right - as 900c have CF and PCMCIA, and maumi have SD(IO) slot, hope that it uses pxa sd host), so it needs to recompile it.

I'm using linux for years on my pc... but never compiled my own kernel. So I'm looking for somebody, who can try to make kernel with VGA framebuffer and sd driver, or maybe initrd with some kind of busybox? to test it.

Sorry for my bad english, I'm from Poland

If you could supply us with link to kernel source it should be easy to add videocode to it. Looks like it infact uses identical graphics (since the driver worked).

Please join us at irc jlime on freenode so we can check it out.

I don't have source - kernel was taken from Jlime Henchman - this page LINK
Hope that source is in git repo.

I've checked - and that's true - MP900c and PHH uses the same graphics chip (Epson S1D13806). My friend is trying to setup crosscompiling environment, but currently with no luck.

I'll join to irc later - maybe tomorrow (today I'm busy)

Well, Ive done some checking and the good news is that cpu/video is same as mp900c so would take minimal effort to get that going. Also the serial shouldnt take much effort since that is controlled by cpu (and therefore should work directly).

I see from your picture that you only got half screen when booting mp900c, what is the resolution on your machine?

In essence we could copy the mp900c settings and increase the videoram (since you seem to have higher resolution) and then it should work. I havent looked into the other hardware you got.

Im going to add a page on our wiki about this device since it falls under unofficially supported (almost same as mp900c) and try and work out the hardware there.

It's running on VGA resolution (640x480 - taskbar is huge because the os is heavily modified by bsquare, there's a article I wrote about this device: LINK(google transaltion from polish is not very good) )

If registry or wince rom dump is needed, I can upload it.

About serial port, if needed for debuging, etc. - there's problem - device doesn't have one (only internal for GSM as I know) - there's only special USB connector (i've looked for cable and found nothing), and docking station connector (12 pin, so may be some serial here... but I don't have dock.)

What amount of colors for that resolution? 8bit/16bit/24bit/32bit? Its needed to calculate how much onboard memory you got for VGA.

I also think its likely that the serial is a part of the dock (like it is for j6xx / j7xx) so would be worth it if you could find a dock for it.

Screen is running at 16 bit (65536 colors).

About docking station - this device is very hard to find (i've never seen it before i bought it on allegro.pl (biggest polish auction site) and on ebay currently also nothing ), so getting dock station only may be a problem.

I'll look for dock pinout (afair cmonex has got PHH, maybe she'll check it?).

About memory - funny thing is that whole rom (wince image) is loaded into ram on hard reset - so device has 128mb of ram, but only about 80mb is available for wince. But linux kernel will allocate whole memory, am I right?

Oki thx. Yeah Linux should have entire memory, I assume you want to run userland off SD.

Of course from SD...I think this is only way for it (without using rom). For testing I have 128mb card (mp900 userland doesn't fit ), currently no other, so i'll buy bigger card if we'll get running new kernel.

Do you know if its a true rom or flashrom? On the mp900c its infact an flashrom so you can update stuff on it (or rewrite and just use linux).

It's a flashrom (i can flash os), but I think that for beginning sd will be better

I can't wait for test kernel

Could you supply me with link for bootloader (or send to my email: kristoffer.ericson@gmail.com). Or you using the default haret (the one we supply).

I'm using haret 1.4.8 from MP900 - wiki.php?mode=search&t=Download_mobilepro900c_eng

Oki. I will create a kernel with abit more framebuffer ram to see if we can get it covering the entire screen.