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| -rw-r--r-- | 2005/a780-ccc2005/openezx-ccc2005.mgp | 478 |
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diff --git a/2005/a780-ccc2005/abstract.txt b/2005/a780-ccc2005/abstract.txt new file mode 100644 index 0000000..0e0b2c4 --- /dev/null +++ b/2005/a780-ccc2005/abstract.txt @@ -0,0 +1,65 @@ +* Title: + Towards the first 100% free software GSM phone + +* Subtitle: + Reverse Engineering the Motorola EZX (A768,A780,E680) series of Linux-based GSM phones + +* Abstract: + This presentation describes the progress of hacking and extending the + Motorola series of Linux based Smartphones, with the ultimate goal to + replace all proprietary applications with 100% free software. + +* Description: + A longer and detailed description of the event's content (250 to 500 words) + It's been two years since Motorola has released the first Linux + Smartphone (A768). More recently, two new models were introduced, the + A780 and the E680, the former even officially distributed in Germany + and all over the EU. + + What's so special about a Linux based smartphone? It's special because + the Linux kernel acts as an enabler for 3rd party hacks and 3rd party + software, like it can be observed with the OpenWRT, OpenTom, + NSLU2-Linux, OpenEmbedded, OpenZaurus and other similar projects. + + The author of this presentation has sucessfully obtained "telnet" + access to an A780 cellphone, built a matching cross-compilation + toolchain and installed various applications for debugging, such as + busybox, iptables, nmap, lsof, strace, etc. + + While re-engineering efforts are still in a early stage, work is + proceeding extremely fast, and important pieces such as the protocol + between the PXA270 frontend processor and the ARM7TDMI GSM processor + have already been partially re-engineered. The project is expected to + progress significantly until 22C3. + + +* Please state if you are going to submit a paper to be included in the 22C3 + Proceedings + Yes + +* Please state if you are going to use slides in your talk and in which format + you are going to provide a copy + Magicpoint or tpp + +* Duration of your talk + +* Language of your talk + en_US + +* Links to background information on the talk + http://www.motorolafans.com/ + http://gnumonks.org/~laforge/weblog/linux/a780/ + http://svnweb.gnumonks.org/trunk/a780/ + +* Target Group: + Developers + +* Resources you need for your talk + digital projector + +* Related talks at 22C3 you know of + none + +* A lecture logo, square format, min. 128x128 pixels (optional) + none + diff --git a/2005/a780-ccc2005/openezx-ccc2005.mgp b/2005/a780-ccc2005/openezx-ccc2005.mgp new file mode 100644 index 0000000..e3747c3 --- /dev/null +++ b/2005/a780-ccc2005/openezx-ccc2005.mgp @@ -0,0 +1,478 @@ +%include "default.mgp" +%default 1 bgrad +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +%nodefault +%back "blue" + +%center +%size 7 + +Free Software on +GSM Phones + +December 29, 2005 +22C3 + +%center +%size 4 +by + +Harald Welte <laforge@gnumonks.org> + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +Introduction + + +Who is speaking to you? + an independent Free Software developer + who earns his living off Free Software since 1997 + who is one of the authors of the Linux kernel firewall system called netfilter/iptables + who can claim to be the first to have enforced the GNU GPL in court + who is doing way too many projects simultaneously, one of them OpenEZX + + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +Contents + + Disclaimer + What is OpenEZX + History of Motorola Linux Phones + A780 / E680(i) overview + Techniques for reverse engineering + Current status of information about EZX phones + OpenEZX software status + Another Linux GSM Phone: HTC BlueAngel + + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +Disclaimer + + +Disclaimer + I have no affiliation with Motorola + OpenEZX project has no affiliation with Motorola + All Information is based on observation, and may be wrong + Lots of the work has been done by a large community, I'm a newbie ;) + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +What is OpenEZX + + + OpenEZX project + to document EZX phone hardware and software + to provide 100% free software stack for frontend CPU + might at some future point in time also look into GSM/RF related hacks + Homepage: http://openezx.org/ (http://open-ezx.org) + Wiki: http://wiki.openezx.org/ + + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +History + + +History of Motorola Linux based gsm phones + A760, A768 + Released in Asia in 2003 + EZX (A780, E680, E680i) + E680 sold only in asian market + A780 sold in China since August 2004 + A780 first Motorola Linux phone available in EU/US + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +A780 + + + The A780 phone + Quad-band GSM + AGPS + GPRS, EDGE, HSCSD + Intel Xscale based + Monta Vista CE Linux + Bluetooth + USB device port (modem / mass storage) + Transflash slot (SD-card in smaller form factor) + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +E680/E680i + + + The E680 phone + Like A780 + No GPS + full-size SD/MMC slot + FM Radio + minor differences in Audio system, GPIO assignment, ... + + The E680i phone + seems to only differ in software + + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +Techniques for re-engineering + + + learn about the device + take the device apart + take high-res PCB photographs + FCC database sometimes quite helpful + remove all the shielding covers + write down types of all integrated circuits + google for those circuits, try locating data sheets + sometimes service manuals can be obtained for small fees + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +Techniques for re-engineering + + + try to find a serial console port + successful in many embedded devices + all you need is a 3.3v<->RS232 level shifter + A780: checking all 100+ test points with an oscilloscope :( + unfortunately not successful in the case of A780 + + try to find a JTAG port + cheap JTAG / parallel port adaptors available or DYI + only helps if you also have a BSDL file or similar + hard to figure out which of the five pins is which + be aware: there might be multiple JTAG ports for multiple IC's + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +Techniques for re-engineering + + + access to the OS instead of the UI + serial console helps in many cases, not in this one + networked devices sometimes have telnet/ssh available + exploits of known-to-be-installed software (zlib-1.1.3) + try "weird button combinations" at startup + + access to flash memory + read out via JTAG + if you have shell access, dd if=/dev/mtd* of=... + via vendor-supplied flash programming tool + copy / unpack / mount flash image to PC workstation + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +Techniques for re-engineering + + + simulation + running ARM binaries from device in QEMU emulation + commercial ARM emulators + + disassembling + WARNING: may be illegal in most jurisdictions + use gnu binutils (objdump, ...) + use special-purpose proprietary tools (IDA Pro) + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +A780 Hardware + + + In short + A Motorola Neptune LTE based mobile phone plus + A PXA270 Xscale based PDA in one case + + Application Processor (PXA270) + runs heavily modified linux-2.4.20 kernel + 48MB RAM + 48MB "wireless" flash + software-configurable clock speed up to 400MHz + JTAG port on test pads, BSDL file and JFlash available + SPI/SSP interface to PCAP and BP + directly attached to 320x200 LCD display + directly attached to touch screen, buttons + directly attached to 1.3Mpixel camera module + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +A780 Hardware + + + Baseband Processor (Neptune LTE) + contains ARM7TDMI for GSM stack + contains 566xx DSP for digital baseband + JTAG port on test pads, but no BSDL file + Connected to Application processor via USB + SPI/SSP interface to PCAP and AP + UART connected to AGPS processor + Connects to GSM SIM module + 8MB external flash + 2MB external RAM + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +A780 Hardware + + + AGPS Processor (Motorola Telematics MG4100) + Attached to UART of BP + Has it's own Flash and RAM (2MB?) + + PCAP2 (power management, clock and audio peripheral) + produces a 16 different voltages + handles all mono/stereo audio + connected to 2 speakers, microphone, vibrator + clock generation + SPI/SSP interface to AP and BP + Backlight control + + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +A780 Hardware + + +RF Part (not very much information known) + + RF6003 + fractional-n RF synthesizer + + RF2722 + GPRS/EDGE capable receiver (RX) + + RF3144 + quad-band power amplifier (TX)))) + + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +A780 AP Software + + + linux-2.4.20 + whole bunch of montavista additions + dynamic power management + EZX arm subarchitecture + low-level drivers for + SPI/SSP + PCAP Audio (mono/stereo/headset/...) + Vibrator (/dev/vibrator) + USB host port attached to BP + USB device port (belcarra usbd, not gadget) + Transflash/SD/MMC + THREE proprietary flash file systems + Intel VFM (hatcreek.o) + m-systems DiskOnChip (tffs.o) + third unknown +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +A780 AP Software + + + mux_cli.o + hooks into special functions of USB host driver + provides GSM TS07.10 (de)multiplex + userspace has tty devices + + gprsv.o + implements GPRS line discipline for mux_cli ttys + hooks into netfilter to intercept DNS packets ?!? + provides gprs0 / grps1 network devices + + ipsec.o + proprietary ipsec stack (don't we already have two GPL licensed?) + Copyright Certicom Corp + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +A780 Software + + + Libraries + glibc + Bluetooth + proprietary userspace program directly opens HCI + GPS + no NMEA, no serial device emulation :( + proprietary library via mux_cli kernel module + UI + embeddedQt + Motorola EZX toolkit + Java + Full J2ME support + (but who wants java if there's linux?) + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +A780 Software + + + Apps + Opera + Helix Player with codecs + aac, amr, mp4, realvideo, mid, mp3, mp4, wma + movianVPN + proprietary IPsec VPN client + CoPilot + proprietary GPS navigation, map&route program + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +EZX Firmware Images + + + EZX Firmware Images + Motorola ships .SHX firmware images to service centres + No legal way for users to get FW updates + Proprietary Windows apps flash phone via USB + Motorola PST + Motorola RSD lite + SHX files contain 'code groups' + AP bootloader (blob based) + AP linux kernel + AP root filesystem + AP /ezxlocal filesystem + AP "language pack" + Bootup Logo/Animation + BP OS + DSP code + Cryptographic Signature(s) + + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +EZX bootloader + + + EZX bootloader + based on GPL licensed blob + source code not yet released by Motorola + low-level initialization code (GPIO config, clock, ...) + vendor specific USB device that allows for + transfer of executable code from USB host + execution of transferred executable + serial console code is present in binary, but not used :( + PST/RSD firmware updates work by uploading a 'ramloader' + + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +EZX USB (EMU) + + + EZX phones seem to have USB device port + Actually, it's "Enhanced Mini USB" (EMU) + Depending on pullup/pulldown/... resistors + USB device port + Serial port (RS232 at 3.3V levels) + Stereo audio signal + 500mA charger + Carkit (easy install, professionally installed) + Factory test + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +EZX USB (EMU) + + + USB Configurations + Even in USB device EMU mode, there are many configs + Official configs + cdc_acm (serial modem emulation for host pc) + USB mass storage (transflash and VFAT-on-TFFS devices) + Undocumented configs + usbnet (network device over USB) + Allows telnet into phone + PST + Mode used by PST Windows App + DSPlog + Apparently a way to dump data from DSP + NetMonitor + supposedly for GSM network monitor + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +Status + + + Status of OpenEZX + fairly good picture about phone architecture + initial 2.6.14 port done, still lots of bugs + Updated toolchain (gcc-3.4) + EZX / OPIE / embeddedQt integration + Linux native BlueZ bluetooth working + netfilter/iptables port (you can do NAT between GPRS and usbnet) + nmap/tcpdump/af_packet.o + lsof, busybox, bash2, + gameboy emulator + qonsole (qt console app with OSD keyboard) + + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +OpenEZX +TODO + + + TODO + get 2.6.x kernel fully running, including all drivers + power management + write free software backend to talk to Neptune LTE (tapisrv) + reimplement mux_cli and gprsv kernel modules + some reference application that can make voice and/or data calls from the commandline + USB On-The-GO support (hardware support present!) + discover how DSPlog, PST, other interfaces work + write linux-based app for phone flashing via USB + dm-crypt for your personal contacts/data + native IPsec + ScummVM port [320x240 and touchpad, ideal!] :) + at some point merge with openembedded.org ? + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%page +Next-generation netfilter +Thanks + + Thanks to + the BBS scene, Z-Netz, FIDO, ... + for heavily increasing my computer usage in 1992 + KNF (http://www.franken.de/) + for bringing me in touch with the internet as early as 1994 + for providing a playground for technical people + for telling me about the existance of Linux! + Alan Cox, Alexey Kuznetsov, David Miller, Andi Kleen + for implementing (one of?) the world's best TCP/IP stacks + Astaro AG + for sponsoring parts of my free software work + Chaos Computer Club (http://www.ccc.de/) + for providing an inspiring environment for cool hacks +%size 3 + The slides and the an according paper of this presentation are available at http://svn.gnumonks.org/projects/presentations +%size 3 |