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doc: TFC139-breakin written, Compal-unlock updated
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Sun, 15 Nov 2015 03:47:19 +0000
parents 6475a935e593
children 0b7abc72e49e
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6475a935e593 doc/Host-tools-overview written
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1 FreeCalypso host tools suite features the following tools that are potentially
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2 useful to end users:
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3
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4 fc-loadtool This is the tool used to read and write the non-volatile flash
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5 memory of supported GSM devices. It can be used to reflash
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6 these devices with new firmware (whether pre-existing or new
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7 firmwares developed within our project), and to save and restore
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8 flash backups. This tool operates on the target device (phone
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9 or modem) while its regular firmware is shut down.
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10
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11 fc-fsio This tool connects to GSM devices running one of the supported
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12 firmware versions while the fw is running (unlike fc-loadtool
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13 which operates on a device while its regular fw is shut down)
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14 and allows you to manipulate (read and write) the device's
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15 flash file system. It is thus a higher-level tool than
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16 fc-loadtool. It is intended primarily for working with our own
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17 firmwares, but it also works with Pirelli's original fw.
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18
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19 fc-shell FreeCalypso firmwares have a feature of our own invention (not
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20 present in any pre-existing ones) to accept AT commands over
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21 the RVTMUX interface. It is useful when no second UART is
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22 available for a dedicated standard AT command interface.
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23 fc-shell is the tool that allows you to send AT commands to the
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24 firmware in this manner; it also allows a few other kinds of
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25 asynchronous commands to be sent.
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26
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27 tfc139 This tool breaks into locked-down Mot C139 phones sold with
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28 TracFone branding, allowing you to reflash them with new
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29 firmware with fc-loadtool.
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30
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31 imei-luhn A simple utility for computing or verifying the Luhn check
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32 digit of an IMEI number.
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33
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34 The following host tools are primarily for developers, but may be useful to
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35 end users as well:
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36
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37 rvtdump This tool produces a human-readable dump of all output emitted
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38 by a TI-based GSM fw on the RVTMUX binary packet interface. It
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39 can also log this dump to a file.
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40
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41 rvinterf This tool is a superset of rvtdump: it not only dumps and/or
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42 logs all output from the GSM fw, but also provides a mechanism
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43 for sending command packets to it. Rvinterf is the engine
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44 behind fc-fsio, fc-shell and fc-tmsh.
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45
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46 tiffs, These tools perform "in vitro" analysis of flash file system
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47 mokoffs, (FFS) images read out of GSM devices with TI-based firmwares.
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48 pirffs You can list and extract the FFS content captured as a raw
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49 flash image, and even perform a few "forensic" operations along
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50 the lines of reading deleted files and seeing the history of
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51 FFS modifications. tiffs is the main program, whereas mokoffs
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52 and pirffs are convenience wrappers for the common FFS
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53 configurations from Openmoko and Pirelli.
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54
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55 fc-getpirimei This utility retrieves the factory-programmed IMEI of a Pirelli
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56 DP-L10 phone by quering its running firmware over the RVTMUX
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57 interface.
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58
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59 fc-serterm This tool is a trivial serial terminal program. Its special
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60 feature is that any output coming the serial port that isn't
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61 printable ASCII is displayed as by cat -v. It is useful for
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62 talking to serially-interfaced devices that mix ASCII with
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63 binary in their serial talk.
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64
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65 The following tools are really just for developers:
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66
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67 ctracedec GSM firmwares built in TI's Windows environment (official ones
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68 as well as our own hacks based on the TCS211 semi-src) have a
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69 "compressed trace" misfeature whereby many of the ASCII strings
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70 in debug trace messages get replaced with numeric indices at
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71 build time, and these numeric indices are all that gets emitted
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72 on the RVTMUX serial channel. This numeric trace output can be
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73 turned back into ASCII strings if you have the str2ind.tab file
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74 corresponding to the fw version that emitted the output in
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75 question; this ctracedec utility performs that decoding.
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76
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77 fc-iram, Reprogramming the non-volatile flash memory is not the only way
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78 fc-xram, to run your own code on a Calypso GSM device. If your code is
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79 fc-compalram small enough to fit entirely into the available RAM on the
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80 device, and you would like to just run it without flashing it
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81 permanently, these tools do the job of loading code images into
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82 different kinds of RAM through different download protocols.
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83
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84 fc-tmsh TI had a tool called TMSH that stood for "test mode shell". We
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85 don't know exactly how it worked, hence we make no claim of our
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86 own test mode shell being anything like TI's original, but we
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87 do have a test mode shell of our own. It sends command packets
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88 to the ETM (Enhanced Test Mode) component in the GSM firmware
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89 and displays its responses in a purely asynchronous manner,
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90 i.e., our tool has no knowledge of any correspondence between
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91 the commands it sends and the responses they elicit. (In
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92 contrast, fc-fsio described above also talks to ETM, but it
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93 does so synchronously.)
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94
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95 fc-rgbconv A simple aid for phone UI development that converts RGB color
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96 values between human-intuitive 8:8:8 format and the 5:6:5 format
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97 used by the color LCDs in the phones targeted by FreeCalypso.
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98
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99 The following tools are really just special-purpose hacks:
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100
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101 fc-dspapidump This utility uses ETM in synchronous mode to read and dump the
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102 contents of the DSP API RAM in a target Calypso GSM device
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103 while the firmware is running.
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104
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105 fc-lcdemu We have TI's TCS211 firmware semi-src that includes TI's
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106 demo/prototype phone UI targeting the 176x220 pixel LCD on TI's
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107 D-Sample development kit, but no suitable hardware on which we
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108 could run this fw with this UI and see it in action. We built
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109 a hacked-up version of the fw that emits all raster blits
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110 intended for the big LCD on the RVTMUX serial interface, and
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111 this fc-lcdemu utility is a plug-in for rvinterf that actually
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112 displays these LCD blits in an X11 window.
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113
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114 fc-pirhackinit This fc-pirhackinit utility is highly specific to the
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115 TCS211-on-Pirelli exercise. DO NOT run it against Pirelli's
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116 stock firmware, nor is it needed when using our full-source
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117 FreeCalypso firmware.