Pocketpenguin Phone Rom, Discussion of the ROM for the MXC300 Pho Options

[Ferret-Simpson]

So. What? Gonna be linux based, (Of course.) What will we need? I'm gonna guess this'll be based on the OpenEmbedded toolkit. A Bootstrap base? I can't see us needing a GUI on a phone emulator. . . So we'll need Stacks, and an interface to the iMX.

Things that are going to need alot of thinking:

The data protocol for the USB connection to the iMX. . . We have the Serial link for AT control, but 3G data, GPRS data, and videophone data will all need to go on the USB bus. . . What else? MMS's, Access to the data on the SIM card, (Own number, SIM-phonebook: Will need a tie in to our AddressBook in the PDA OS. . .)

The software that controls the RPU and DSP. . . Needed functions?

It's going to have to be able to wake the iMX so that the iMX can handle CallerID, send any required information to the twin displays and to bluetooth (And whatever else you guys route it to Caller log?)

Genii (Geniuses?) give me your opinion.

[Ferret-Simpson]

I was in fact referring to the low level stuff.

And no, sorry that's wrong. There are in fact 3 concepts. The single-CPU, the Black-Box method you're talking about, involves the use of an all-in one box into which you plug in your audio. Such as the one we looked at on Sparkfun.

The third option we're using is similar, and is displayed neatly on the HTC Universal and well. . All the OTHER HTC phones. They have a separate communications processor, in their case a Qualcomm unit. However this embedded processor needs it's own OS to function, hence why on the XDA-Developers site you get links to "Phone ROM" and other variations on that theme. This phone rom is an Operating system and set of Stacks that runs on the Communications (Baseband) Processor, and provides an emulation of an AT modem for the PDA CPU.

That's how it works in the XDA, the Motorola A-Series, and how Freescale themselves (Manafacturer of both the chips we're using) have explained to me it works. So what we are talking about IS the low level kernel driver, but to run on the phone processor, which DOES need one to operate.