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loadtools and rvinterf: set TIOCEXCL on the tty
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 03 Aug 2017 00:37:59 +0000
parents 7e3e3a958e3f
children 97d6d593ffc6
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1 FreeCalypso host tools suite includes a large number of different tools, many
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2 of which are quite specialized and rarely needed. The following tools are the
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3 most essential ones:
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5 fc-loadtool This is the tool used to read and write the non-volatile flash
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6 memory of supported GSM devices. It can be used to reflash
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7 these devices with new firmware (whether pre-existing or new
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8 firmwares developed within our project), and to save and restore
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9 flash backups. This tool operates on the target device (phone
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10 or modem) while its regular firmware is shut down.
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12 fc-iram, Reprogramming the non-volatile flash memory is not the only way
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13 fc-xram, to run your own code on a Calypso GSM device. If your code is
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14 fc-compalram small enough to fit entirely into the available RAM on the
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15 device, and you would like to just run it without flashing it
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16 permanently, these tools do the job of loading code images into
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17 different kinds of RAM through different download protocols.
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18 Some phones have large enough RAM to allow a complete functional
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19 firmware image to be run via fc-xram without flashing.
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21 rvinterf This program is our engine for communicating with up & running
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22 TI-based firmwares through the RVTMUX binary packet interface.
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23 It receives and decodes all debug trace and other packets
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24 emitted by the target fw, and allows the options of printing
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25 them on the terminal, saving them to a log file, and/or passing
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26 them to other programs that connect to rvinterf as local socket
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27 clients. In the other direction those latter client programs
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28 can send arbitrary command packets to the target fw.
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29
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30 fc-fsio Going through rvinterf, this tool connects to GSM devices
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31 running one of the supported firmware versions while the fw is
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32 running (unlike fc-loadtool which operates on a device while
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33 its regular fw is shut down) and allows you to manipulate
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34 (read and write) the device's flash file system. It is thus a
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35 higher-level tool than fc-loadtool. It is intended primarily
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36 for working with our own firmwares, but it also works with
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37 Pirelli's original fw.
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39 fc-shell FreeCalypso firmwares have a feature of our own invention (not
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40 present in any pre-existing ones) to accept AT commands over
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41 the RVTMUX interface. It is useful when no second UART is
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42 available for a dedicated standard AT command interface.
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43 fc-shell is the tool that allows you to send AT commands to the
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44 firmware in this manner; it also allows a few other kinds of
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45 asynchronous commands to be sent. It works through rvinterf.
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46
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47 And here is a listing of all other tools in mostly-alphabetical order:
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48
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49 c139explore This is a run-from-RAM (no flashing) program for Mot C139/140
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50 phones that exercises their peripheral hardware: LCD, keypad
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51 backlight, buzzer and vibrator.
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52
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53 ctracedec GSM firmwares built in TI's Windows environment (official ones
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54 as well as our own hacks based on the TCS211 semi-src) have a
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55 "compressed trace" misfeature whereby many of the ASCII strings
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56 in debug trace messages get replaced with numeric indices at
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57 build time, and these numeric indices are all that gets emitted
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58 on the RVTMUX serial channel. This numeric trace output can be
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59 turned back into ASCII strings if you have the str2ind.tab file
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60 corresponding to the fw version that emitted the output in
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61 question; this ctracedec utility performs that decoding.
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62
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63 fc-buzplay This program plays piezoelectic buzzer melodies on an actual
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64 Calypso device equipped with such a buzzer (Mot C1xx, TI's
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65 D-Sample board, our planned future HSMBP) by loading a buzplayer
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66 agent onto the target and feeding melodies to be played to it.
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67
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68 fc-cal2text This utility takes a dump of TI's /gsm/rf flash file system
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69 directory subtree as input (either extracted in vitro with tiffs
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70 or read out in vivo with fc-fsio) and converts all RF tables
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71 found therein into a readable ASCII format. See the RF_tables
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72 article for more details.
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73
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74 fc-dspapidump This utility uses ETM in synchronous mode (going through
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75 rvinterf) to read and dump the contents of the DSP API RAM in a
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76 target Calypso GSM device while the firmware is running.
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77
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78 fc-e1decode This utility decodes a melody in TI's Melody E1 format from the
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79 the native binary format to our own ASCII-based representation;
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80 see the Melody_E1 article for more information.
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81
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82 fc-e1gen This utility compiles an E1 melody from our own ASCII source
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83 format into binary bits to be loaded into a FreeCalypso phone;
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84 see the Melody_E1 article for more information.
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85
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86 fc-fr2tch This hack-utility converts a GSM 06.10 speech sample from the
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87 de facto standard libgsm format (which can be recorded with
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88 standard tools like SoX) into an uplink play file that can be
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89 played with the tch play command in fc-shell; see the
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90 TCH-bit-access article for more information.
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92 fc-gsm2vm This utility converts a GSM 06.10 speech sample from the same
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93 libgsm source format into a voice memo file that can be
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94 uploaded into the FFS of a FreeCalypso device and played with
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95 the audio_vm_play_start() API or the AT@VMP command that
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96 invokes the latter.
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98 fc-lcdemu We have TI's TCS211 firmware semi-src that includes TI's
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99 demo/prototype phone UI targeting the 176x220 pixel LCD on TI's
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100 D-Sample development kit, but no suitable hardware on which we
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101 could run this fw with this UI and see it in action. We built
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102 a hacked-up version of the fw that emits all raster blits
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103 intended for the big LCD on the RVTMUX serial interface, and
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104 this fc-lcdemu utility is a plug-in for rvinterf that actually
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105 displays these LCD blits in an X11 window. This program is not
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106 built by default as it requires libX11 to compile and an X11
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107 display to run.
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109 fc-memdump This tool captures a memory dump from a GSM device whose
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110 firmware implements one of TI's Test Mode memory read commands,
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111 either the old TM3 version or the new ETM one. It works with
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112 FreeCalypso Citrine, with TCS211-based firmwares including
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113 FreeCalypso Magnetite, with really old TI firmwares which
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114 predate ETM, and with Mot C1xx original firmwares. It works
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115 through rvinterf.
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116
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117 fc-rgbconv A simple aid for phone UI development that converts RGB color
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118 values between human-intuitive 8:8:8 format and the 5:6:5 format
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119 used by the color LCDs in the phones targeted by FreeCalypso.
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120
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121 fc-serterm This tool is a trivial serial terminal program. Its special
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122 feature is that any output coming from the serial port that
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123 isn't printable ASCII is displayed as by cat -v. It is useful
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124 for talking to serially-interfaced devices that mix ASCII with
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125 binary in their serial talk.
23
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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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131 TCH-bit-access article for more information.
216
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132
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133 fc-tmsh TI-based GSM firmwares provide a rich set of Test Mode commands
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134 that can be issued through the RVTMUX (debug trace) serial
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135 channel, used for L1/RF test functions, production line RF
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136 calibration, FFS (flash file system) access, audio configuration
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137 and other miscellany. fc-tmsh is our test mode shell for
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138 sending these Test Mode commands to targets and displaying
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139 decoded target responses; it works through rvinterf. fc-tmsh
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140 supports all Test Mode commands (both TM3 and ETM) implemented
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141 in our target firmwares except FFS access; use fc-fsio for the
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142 latter.
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143
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144 fc-vm2hex This utility converts the old-fashioned (non-AMR) voice memo
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145 files read out of FFS into hex strings that can be analyzed by
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146 a human or further fed to fc-tch2fr.
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147
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148 imei-luhn A simple utility for computing or verifying the Luhn check
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149 digit of an IMEI number.
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150
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151 pirexplore This is a run-from-RAM (no flashing) program for Pirelli DP-L10
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152 phones that exercises their peripheral hardware, primarily their
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153 LCD.
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154
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155 rvtdump This tool produces a human-readable dump of all output emitted
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156 by a TI-based GSM fw on the RVTMUX binary packet interface. It
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157 can also log this dump to a file.
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158
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159 tfc139 This tool breaks into Mot C1xx phones via shellcode injection,
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160 a method that works despite any bootloader locks, allowing you
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161 to reflash locked phones with new firmware with fc-loadtool.
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162 The name of the utility is historical: previously it was
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163 specific to TFC139 phones (C139s sold with TracFone branding),
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164 but the current version is expected to work with all Mot C1xx
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165 firmware versions.
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166
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167 tiaud-decomp This utility decodes TI's audio mode configuration files read
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168 out of FFS into our own ASCII format. The tool to perform the
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169 opposite conversion (compile these audio mode config files
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170 "in vitro" from an ASCII text source) is planned, but has not
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171 been written yet.
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172
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173 tiffs, These tools perform "in vitro" analysis of flash file system
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174 mokoffs, (FFS) images read out of GSM devices with TI-based firmwares.
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175 pirffs You can list and extract the FFS content captured as a raw
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176 flash image, and even perform a few "forensic" operations along
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177 the lines of reading deleted files and seeing the history of
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178 FFS modifications. tiffs is the main program, whereas mokoffs
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179 and pirffs are convenience wrappers for the common FFS
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180 configurations from Openmoko and Pirelli.