FreeCalypso > hg > fc-magnetite

annotate README @ 383:43dbedde9d80

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc/C1xx-Howto written
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Jan 2018 20:45:51 +0000
parents 9399a83cb394
children 56ac93768594
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
94
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 FreeCalypso Magnetite firmware project
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ======================================
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3
373
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
4 As of A.D. 2018, FC Magnetite is the primary official Calypso firmware source
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
5 tree for the FreeCalypso family of projects. This maintained and evolving
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
6 source can be built in many different configurations for several different
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
7 hardware targets, and is currently used in the following ways:
94
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8
373
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
9 * The official production firmwares for our fully supported GSM+GPRS modem
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
10 products (FCDEV3B and the modem part of Openmoko devices) are built from
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
11 this source tree. See doc/Modem-configs for this mode of usage.
94
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12
373
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
13 * The work in progress toward a future complete FreeCalypso phone handset
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
14 (also known as a Libre Dumbphone) is being done in this source tree.
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
15 See doc/Handset-goal for more info about this project direction.
94
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16
373
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
17 * One can play with FreeCalypso and get a taste for it using certain hardware
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
18 that used to be readily available and which most people in the phone hacking
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
19 scene already have: Motorola C139 and Pirelli DP-L10. Firmware images of the
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
20 "hacking toy" sort can be built for both of these models from the present
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
21 source tree, and one can exercise most of the functions and capabilities of
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
22 FreeCalypso (with the notable exception of CSD and GPRS) on this historical
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
23 but available-to-most-people hardware. See doc/C139-Howto, doc/Pirelli-Howto
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
24 and doc/Voice-pseudo-modem for more information.
94
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 Functionality
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 =============
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 TI's GSM mobile station firmware architecture supports two ways in which the
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 GSM device may be controlled: via AT commands from an external host and/or via
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 a local UI on devices with LCD & keypad hardware. (I said "and/or" because the
218
75ea63a3fce5 README updated for the current status of the project
Mychaela Falconia <falcon@freecalypso.org>
parents: 96
diff changeset
32 two mechanisms can coexist.) The code we got from TI (TCS211) is very solid
75ea63a3fce5 README updated for the current status of the project
Mychaela Falconia <falcon@freecalypso.org>
parents: 96
diff changeset
33 and mature in the modem configuration (control via AT commands only, no UI, no
75ea63a3fce5 README updated for the current status of the project
Mychaela Falconia <falcon@freecalypso.org>
parents: 96
diff changeset
34 battery management, no traditional handset on/off control), but the additional
373
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
35 code layers that are needed for handset products but not for modems came in a
218
75ea63a3fce5 README updated for the current status of the project
Mychaela Falconia <falcon@freecalypso.org>
parents: 96
diff changeset
36 very rough "proof of concept" condition, nowhere close to a usable product.
75ea63a3fce5 README updated for the current status of the project
Mychaela Falconia <falcon@freecalypso.org>
parents: 96
diff changeset
37
373
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
38 In FC Magnetite we further maintain and support the solid code base we got for
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
39 the modem functionality, and we are also working to improve the support for
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
40 handset products and bring it into a practically usable state. We have already
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
41 implemented an entirely new battery charging and discharge monitoring driver
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
42 that actually works on our target hw (of the two we got from TI, one was
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
43 bitrotten and the other was designed for charging hardware that is quite
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
44 different from what we are working with), and we shall hopefully start working
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
45 on the UI soon - see doc/Handset-goal for more info.
94
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46
373
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
47 Both TI's original modem fw (TCS211) and our recreation thereof in this
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
48 Magnetite project support not only voice calls and SMS, but also CSD, fax and
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
49 GPRS. This advanced functionality is fully supported on our own GSM MS
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
50 development board (FCDEV3B), where both Calypso UARTs are presented directly to
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
51 the developer, as well as on the embedded Calypso modem in Openmoko GTA01/02
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
52 smartphones, where the AT command channel with CSD, fax and GPRS capabilities
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
53 is connected to the phone's application processor.
94
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 Build system
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 ============
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 Even though FC Magnetite is essentially unchanged TCS211 code base and builds
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 using TI's proprietary TMS470 compiler under Wine, the build system is entirely
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 new. TI's TCS211 build system, called BuSyB, works by way of a Java tool
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 generating a customized makefile for each desired build configuration, based on
96
9fb9f896bd77 README: grammar fix
Mychaela Falconia <falcon@freecalypso.org>
parents: 94
diff changeset
62 lots of magic contained in a big repository of XML files. There are a bunch of
9fb9f896bd77 README: grammar fix
Mychaela Falconia <falcon@freecalypso.org>
parents: 94
diff changeset
63 Perl scripts involved as well. The Java tool that does the heavy lifting exists
94
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 only as compiled Java bytecode sans source, and the surrounding Perl scripts
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 aren't very understandable either. And the whole thing thoroughly assumes a
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 Windows environment (drive letters, backslashes, case-insensitive file system)
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 throughout. As a result, when working with TCS211 fw with its original build
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 system, we had to treat these BuSyB-generated makefiles almost as being blobs in
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 themselves: regenerating a makefile from XML magic required major effort, there
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 were some bugs in the makefile generation which we couldn't fix and thus we had
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 to edit the makefiles manually after each regeneration - it was an utter mess,
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 and absolutely not an acceptable way to build a forward-looking, community-
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 serving project.
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 In FC Magnetite I have recreated the relevant parts of the TCS211 build system,
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 using Bourne shell magic instead of Java and XML. Just like TI's BuSyB, ours
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 is a makefile generation system: in order to compile the firmware in a
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 particular desired configuration, you run a shell script to select the config
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 you would like. This shell script will create a dedicated build directory tree
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 to fully contain this build, and populate it with generated Makefiles and some
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 other bits - then you go into the just-created build directory and run make
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 there. The source and build trees are thus cleanly separated. See
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 doc/Compiling for detailed instructions.
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 Another key difference from our previous TCS211-based firmware offerings is that
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 even though we still have to run TI's compiler binaries under Wine, the Wine
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 invokation has been moved from the top (root) of the build process to the
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 bottom leaves. With our previous TCS211-based works you would run Wine at the
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 top, and then the entire build process would proceed in the Windows environment,
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 using Windows versions of make and other nonsense. Not so in FC Magnetite:
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 in this firmware project all shell scripts, Makefiles, Perl scripts and other
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 build system accessories run at the native Unix level, and Wine is only invoked
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 at the lowest level by individual tool wrappers: for example, TI's compiler
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 binary cl470.exe is encapsulated in a Unix shell script called cl470 that
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 invokes Wine to run the Windows binary, presenting the illusion of a native
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 Unix tool to all upper levels.
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 As yet another defenestration measure, all source files are checked into this
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 tree with Unix line endings.
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100
373
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
101 Two versions of the G23M protocol stack
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
102 =======================================
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
103
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
104 A major component of all functional firmware configurations is the mass of code
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
105 that implements layers 2 and 3 of the GSM+GPRS protocol stack, called G23M. In
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
106 FC Magnetite we have the option of using one of two different versions of this
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
107 key firmware component:
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
108
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
109 * The original G23M version from Openmoko: this version is believed to be very
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
110 stable because it has been used (successfully to the best of our knowledge)
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
111 by Openmoko, and it came from TI's TCS211 program that officially targeted
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
112 the Calypso chipset - but it exists only as binary object libraries with no
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
113 corresponding source. The lack of source means no ability to change the
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
114 feature configuration (what is enabled and what is disabled), very difficult
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
115 to debug if something does go wrong - all of the usual problems of software
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
116 without source.
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
117
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
118 * A newer version from TI's TCS3/LoCosto program. This version came to us in
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
119 the form of full C source, and because this fw component is chipset-
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
120 independent (unlike L1), we have successfully produced a TCS2/TCS3 hybrid in
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
121 which the new G23M code from TCS3.2 is grafted onto the chipsetsw foundation
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
122 from TCS211, which we have reconstructed into full C source form as well.
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
123
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
124 Each of the two G23M PS versions also has its own version of the Application
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
125 Control Interface (ACI) layer to go with it, which we call aci2 and aci3 -
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
126 except that in the case of ACI, we have the full source for both versions.
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
127
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
128 The new TCS2/TCS3 hybrid config is the way forward, as our goal is to have no
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
129 blobs in our firmware - having the full source is a prerequisite for maintaining
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
130 a software product. FC Magnetite supports building both configurations in order
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
131 to facilitate the transition, and as of this writing, we still need to add a few
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
132 bits to the new version of ACI in order to achieve 100% feature parity with
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
133 Openmoko.
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
134
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
135 Other blobs
94
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 ===========
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137
373
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
138 The TCS2/TCS3 hybrid firmware is built almost entirely from source; the only
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
139 components which are linked in the form of prebuilt libraries are GPF, Nucleus
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
140 and the TMS470 compiler's equivalent of libc/libgcc. It needs to be noted that
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
141 these components are so stable and configuration-independent that they were
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
142 used mostly in prebuilt library form even inside TI. In the case of GPF we've
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
143 got the corresponding source for most of the modules within those libs; for the
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
144 few modules for which the original source has been lost, we've already done a
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
145 rough first-draft reconstruction as part of our previous gcc-built GSM fw
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
146 efforts, and we only need to polish this reconstruction in order to have
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
147 deblobbed GPF in our mainline production fw. In the case of Nucleus we likewise
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
148 have another version of it in full source form which has been proven good in
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
149 other FreeCalypso firmware projects.
94
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150
373
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
151 The planned successor to FC Magnetite (tentative planned name Selenite) will
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
152 use the hybrid config for the G23M PS, deblobbed GPF and the source-enabled
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
153 version of Nucleus, resulting in blob-free firmware except for the proprietary
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
154 TMS470 compiler and its equivalent of libc/libgcc. Transition to building with
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
155 gcc (like in FreeCalypso Citrine) will follow afterward, completely exiting the
9399a83cb394 first round of documentation updates for 2018
Mychaela Falconia <falcon@freecalypso.org>
parents: 254
diff changeset
156 land of blobs and proprietary build tools.
94
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 Further reading
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 ===============
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 For various instructions and notes specific to this FreeCalypso Magnetite
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 firmware, look in the doc directory. For more information about the overall
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 FreeCalypso project and our hardware building aspirations, go to our website:
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164
596d86109e44 initial round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 https://www.freecalypso.org/