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etm_audio.c: fix off-by-one error in auw of FIR coefficients This fix was already made in FC Tourmaline a while back, but it is also the kind of bugfix that deserves to be backported to Magnetite and Selenite as well.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 31 Oct 2022 00:14:44 +0000
parents 5806383e2788
children
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1 Preparing the development and build environment
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2 ===============================================
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3
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4 In order to compile our FreeCalypso Magnetite firmware, you will need a
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5 Unix/Linux system. Even though we are using a compiler which we got in the
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6 form of Windows .exe binaries and thus have to use Wine (see below), everything
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7 that we have built on top of it is Unix-based. The Mother currently uses
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8 Slackware Linux release 14.2 (32-bit) and previously used Slackware 13.37,
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9 also 32-bit.
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10
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11 You will need to install the following 3 pieces of software on whatever
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12 machine you will use to run the FC Magnetite build process:
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13
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14 1. Wine: self-explanatory. The Mother uses the following Slackware package:
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16 https://www.freecalypso.org/members/falcon/slackware/wine-1.5.23-i486-1sg.txz
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18 I originally used it with Slackware 13.37 and I am still able to use it
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19 with 14.2 without any issues.
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20
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21 2. FreeCalypso Wine environment:
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22
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23 ftp://ftp.freecalypso.org/pub/GSM/TI_src/wine/installed-env.tar.xz
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24
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25 Extract the content of the above tarball into your ~/.wine/drive_c
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26 directory - that's all there is to it!
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27
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28 3. nowhine wrapper around Wine:
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29
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30 ftp://ftp.freecalypso.org/pub/GSM/TI_src/wine/nowhine.c
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32 The purpose of this wrapper is to suppress the following obnoxious whine
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33 which wine emits on my system:
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35 preloader: Warning: failed to reserve range 00010000-00110000
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37 Wine will also emits a bunch of other whines if you have to run it
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38 in an environment without an X11 display (e.g., on a machine that you
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39 ssh into), and our nowhine wrapper suppresses those as well.
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41 If wine does not emit those preloader whines on your system and you
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42 never find yourself in a situation of having to run without an X11
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43 display and thus you find our nowhine wrapper to be unnecessary,
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44 you can skip the wrapper and create a nowhine symlink pointing directly
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45 to wine.
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47 The mokosrec2bin flash image file format conversion utility is now included
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48 locally and no longer needs to be provided externally.
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49
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50 Compiling the local helper utilities
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51 ====================================
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52
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53 (cd helpers; make)
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54
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55 Do the above. Most of the build helper scripts used in the FC Magnetite build
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56 system are written in Bourne shell, but a few were easier to implement in C.
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57 You need to compile these C helper utilities before you can run an actual FC
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58 Magnetite firmware build, but these utilities are totally ad hoc and specific
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59 to the needs of our fw build system, hence they are not meant to be installed
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60 globally on your system - instead they stay within the fc-magnetite tree. You
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61 just need to run make in the helpers directory once before any actual firmware
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62 builds.
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63
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64 Actually building the firmware
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65 ==============================
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66
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67 In order to build our FreeCalypso Magnetite firmware for a particular target in
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68 a particular configuration, run a command like this from the top level of the
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69 fc-magnetite tree:
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71 ./configure.sh fcdev3b hybrid
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73 The first required argument to the configure.sh script selects the target, the
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74 second required argument selects the build configuration recipe, and any further
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75 arguments beyond these two (optional) allow changing various configurable
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76 settings that aren't strictly fixed by the hardware target or by the build
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77 configuration recipe.
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78
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79 As of this writing, the following hardware targets are supported:
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81 c11x Motorola C11x/12x
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82 c139 Motorola C139/140
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83 c155 Motorola C155/156
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84 dsample TI's D-Sample C05 board (no working radio currently)
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85 fcdev3b FreeCalypso FCDEV3B
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86 gtamodem The Calypso GSM/GPRS modem in Openmoko GTA01/02 smartphones
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87 gtm900mgc Huawei GTM900, hardware variant MGC1GSMT or MGC2GSMT
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88 j100 Sony Ericsson J100
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89 leonardo TI Leonardo boards
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90 luna1 FreeCalypso Luna, based on iWOW DSK v4.0 or v5.0 motherboard
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91 luna2 FreeCalypso Luna, based on FC Caramel2 motherboard
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92 pirelli Pirelli DP-L10
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93 tangomdm FreeCalypso Tango standard modem config
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94
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95 For the available configurations (the second required argument to the configure
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96 script), look in the configs directory and read the various write-ups under doc.
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98 Each configuration is built in its own directory; the name of this build
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99 directory takes the form of build-$TARGET-$CONFIG$SUFFIX, i.e., for the example
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100 configure.sh line above, the resulting build directory will be named
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101 build-fcdev3b-hybrid. The $SUFFIX part is empty by default, but can be set on
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102 the command line in order to distinguish non-standard builds that had some
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103 tunable settings changed to values other than the default. For example, if you
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104 are building the hybrid configuration for the fcdev3b target as above, but you
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105 need to disable MELODY_E2, you could run the configure script as follows:
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106
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107 ./configure.sh fcdev3b hybrid MELODY_E2=0 SUFFIX=-noe2
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108
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109 The build directory would then become build-fcdev3b-hybrid-noe2, and the
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110 specified suffix will also be included in the firmware version ID string that
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111 gets compiled into the image.
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112
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113 To actually compile the firmware, cd into the created build directory and run
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114 make there. Unfortunately the use of TI's proprietary compiler via Wine makes
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115 the build quite slow, but there is a trick to speed it up: if you run some
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116 other Wine program that stays open and does not exit on its own (e.g., wine cmd)
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117 in another window and leave it open while you run your FC Magnetite fw build,
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118 the build will proceed much faster - the presence of another Wine process using
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119 the wineserver environment will keep Wine from shutting this environment down
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120 and restarting it for every individual cl470 run, i.e., for each individual C
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121 source file.
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122
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123 When the build is done, the flashable firmware image will be in fwimage.bin.
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124 This image is to be flashed with fc-loadtool at a target-dependent base address.
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125 The build system also produces a short text file named flash-script which is a
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126 flashing command script for fc-loadtool that erases the correct range of flash
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127 sectors and then programs fwimage.bin at the right address.
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128
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129 When building firmware for the FCDEV3B or for the Pirelli, one can build either
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130 a flashable image or a RAM-loadable one - or both. Because this part of the
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131 build system is common with other targets for which only flash images can be
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132 produced, the Makefile always builds the flashable image by default -
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133 fwimage.bin is always meant for flash and never for RAM. To build a RAM-
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134 loadable image when the target allows it, run 'make ram' - the image will be in
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135 ramimage.srec, which you can then load and run on the target with FreeCalypso
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136 host tool fc-xram.
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137
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138 Running on the hardware
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139 =======================
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140
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141 In order to run the firmware you have built on your Calypso phone or modem
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142 (flash or run in RAM as appropriate), you will need to use FreeCalypso host
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143 tools. The current version at any given moment can be found at this URL:
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144
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145 ftp://ftp.freecalypso.org/pub/GSM/FreeCalypso/fc-host-tools-latest.tar.bz2
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146
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147 Please see target-specific notes for more details.