Neo FreeRunner Openness
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Neo FreeRunner
Many people are more interested in getting a completely (and openly) documented hardware platform than in getting one with "just" all drivers under GPL. Why is this so? Just imagine an open source kernel which is released under a copyleft license which is incompatible to the GPL (like the OpenSolaris kernel). These poor developers would have to reverse engineer a so called "open platform" as they cannot use the available drivers and header files. If you are a GPL-is-the-only-true-license guy/girl: Don't be offended by this, it's simply about choice. :)
This page tries to give you an overview how open the GTA02 hardware is documented and where to get the documentation. Your help is needed! If you know anything which is missing just add it, if possible with a reference where the info is coming from.
Some datasheets have been found here.
| Component | Name | Openness |
|---|---|---|
| CPU | Samsung S3C2442 | Docs available from Samsung, but not easily. Only after registering and qualifying. here is a copy. um_s3c2442b_rev12.pdf] |
| NAND flash | Samsung? | Standard NAND command-set. |
| GSM modem | TI Calypso? | Speaks standard protocols with proprietary extensions. Most of the proprietary extensions are present also in some BenQ and/or Enfora Enabler modems which have open documentation available on internet. See also GTA01 gsm modem. The NDAd documentation for the calypso, register definition and hardware definition was leaked onto a public forum on the 4th of March by persons or persons unknown.
The legality of reading these files may vary according to your local laws, as may generating code from them. |
| Transceiver | TRF6151? | No interaction with software. |
| Analog baseband | TWL3014? | No interaction with software. |
| WiFi | Atheros AR6K | No documentation available! GPL'ed driver only. |
| Bluetooth | Delta DFBM-CS320 Class2 Module using CSR BlueCore4? | Documented here |
| GPS | u-blox ANTARIS 4 ATR0635 | Serial protocol documentation is freely available from the manufacturer. |
| Graphic Accelerator | SMedia 3362 | Documentation is only available under NDA. Unlike previously announced,
there are no current plans to get this information out of NDA due to funding and time constraints. |
| MicroSDHC | ? | Connected to the SMedia 3362 |
| LCD | TD028TTEC1 module using a Toshiba JBT6K74 TFT LCD Driver Chipset? | No open documentation available! GPL'ed driver only. |
| Touch Screen | ? | Connected to the s3c2442 similar to GTA01 |
| Vibrator | Simple motor attached to the PWM output of the s3c2442 | |
| Sound Codec | Wolfson Codec | Full data sheet |
| Sound Amplifier | National Semiconductor LM4857 | Full data sheet |
| Power management | Philips PCF50606 | Documented here |
| Battery | Proprietary | Schematic here |
| JTAG | ? | Standardized, BSDL file for the CPU will hopefully become available |
| Case | Proprietary | Openmoko has released the CAD files for the case schematics. See the CAD directory |
Questions
How anybody managed to sniff what BenQ and/or Enfora Enabler send to the Calypso chip? Do they know about AT%SLEEP=4? If not, do they periodically unregister from GSM network (as per bug 1024).
