FreeCalypso > hg > freecalypso-tools

annotate doc/Host-tools-overview @ 169:0b4167c0ed52

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CHANGES: documenting fc-tmsh changes, fc-cal2text and tiaud-decomp addition
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 20 Mar 2017 04:24:33 +0000
parents 3c446058b5a6
children 7e3e3a958e3f
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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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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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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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27 tfc139 This tool breaks into Mot C1xx phones via shellcode injection,
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28 a method that works despite any bootloader locks, allowing you
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29 to reflash locked phones with new firmware with fc-loadtool.
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30 The name of the utility is historical: previously it was
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31 specific to TFC139 phones (C139s sold with TracFone branding),
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32 but the current version is expected to work with all Mot C1xx
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33 firmware versions.
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35 imei-luhn A simple utility for computing or verifying the Luhn check
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36 digit of an IMEI number.
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37
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38 The following host tools are primarily for developers, but may be useful to
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39 end users as well:
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40
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41 rvtdump This tool produces a human-readable dump of all output emitted
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42 by a TI-based GSM fw on the RVTMUX binary packet interface. It
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43 can also log this dump to a file.
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44
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45 rvinterf This tool is a superset of rvtdump: it not only dumps and/or
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46 logs all output from the GSM fw, but also provides a mechanism
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47 for sending command packets to it. Rvinterf is the engine
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48 behind fc-fsio, fc-shell and fc-tmsh.
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49
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50 tiffs, These tools perform "in vitro" analysis of flash file system
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51 mokoffs, (FFS) images read out of GSM devices with TI-based firmwares.
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52 pirffs You can list and extract the FFS content captured as a raw
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53 flash image, and even perform a few "forensic" operations along
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54 the lines of reading deleted files and seeing the history of
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55 FFS modifications. tiffs is the main program, whereas mokoffs
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56 and pirffs are convenience wrappers for the common FFS
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57 configurations from Openmoko and Pirelli.
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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 from the serial port that
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61 isn't printable ASCII is displayed as by cat -v. It is useful
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62 for 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-memdump This tool captures a memory dump from a GSM device whose
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96 firmware implements one of TI's Test Mode memory read commands,
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97 either the old TM3 version or the new ETM one. It works with
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98 FreeCalypso Citrine, with TCS211-based firmwares including
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99 FreeCalypso Magnetite, with really old TI firmwares which
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100 predate ETM, and with Mot C1xx original firmwares.
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102 fc-rgbconv A simple aid for phone UI development that converts RGB color
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103 values between human-intuitive 8:8:8 format and the 5:6:5 format
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104 used by the color LCDs in the phones targeted by FreeCalypso.
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105
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106 The following tools are really just special-purpose hacks:
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107
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108 fc-dspapidump This utility uses ETM in synchronous mode to read and dump the
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109 contents of the DSP API RAM in a target Calypso GSM device
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110 while the firmware is running.
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111
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112 fc-lcdemu We have TI's TCS211 firmware semi-src that includes TI's
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113 demo/prototype phone UI targeting the 176x220 pixel LCD on TI's
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114 D-Sample development kit, but no suitable hardware on which we
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115 could run this fw with this UI and see it in action. We built
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116 a hacked-up version of the fw that emits all raster blits
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117 intended for the big LCD on the RVTMUX serial interface, and
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118 this fc-lcdemu utility is a plug-in for rvinterf that actually
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119 displays these LCD blits in an X11 window.
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120
23
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121 fc-fr2tch This hack-utility converts a GSM 06.10 speech sample from the
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122 de facto standard libgsm format (which can be recorded with
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123 standard tools like SoX) into an uplink play file that can be
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124 played with the tch play command in fc-shell; see the
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125 TCH-bit-access article for more information.
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126
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127 fc-tch2fr This hack-utility takes a TCH downlink recording produced with
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128 the tch record command in fc-shell and converts it to a playable
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129 libgsm file which will most likely contain some garbage by
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130 disregarding the non-understood DSP status words; see the
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Mychaela Falconia <falcon@freecalypso.org>
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131 TCH-bit-access article for more information.