FreeCalypso > hg > fc-magnetite

annotate doc/Developer-notes @ 651:27bb8ec7bbd3

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
targets/luna.{conf,h} added
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 07 May 2020 07:39:54 +0000
parents 343104963a7f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
527
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 The present article is a Magnetite-specific addendum to the TCS211-fw-arch
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 document in the freecalypso-docs repository; the latter document needs to be
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 read first before this one.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 Source tree layout
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 ==================
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 The arrangement of source components under src/ in FC Magnetite is somewhat
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 peculiar because it is designed to support building two different code base
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 variants: either pure TCS211 without any code from TCS3/LoCosto (which requires
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 using a binary-only version of the G23M PS component) or our FreeCalypso
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 signature TCS2/TCS3 hybrid which is blob-free in this regard. The directories
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 under src/ are as follows:
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 aci2
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 This subtree is an import of g23m/condat/ms/src from TCS211; it is
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 named aci2 because it primarily contains the TCS2 version of ACI and
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 the UI layers (BMI+MFW) that go with it, but it also contains the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 source for ALR from TCS211 which is used in our TCS2/TCS3 hybrid.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 condat2
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 This subtree is an import of g23m/condat from TCS211, pruned to just
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 com and frame subtrees, with int and ms subtrees omitted. The header
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 files found in this subtree are used only in the pure TCS211 configs,
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 but most of the source modules in this same subtree are used in both
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 pure TCS211 and hybrid configs.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 condat3
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 This subtree is an import of g23m/condat from TCS3.2, similarly pruned
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 to just com and frame subtrees. This subtree is used only for hybrid
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 configs, and mostly for the header files under condat3/com/inc and
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 condat3/com/include; the only C module taken from condat3 is cl_rlcmac.c
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 in comlib.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 Two header files under condat3/com/include (pwr.h and rtc.h) have been
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 replaced with TCS211 versions as part of the hybridization.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 cs
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 This subtree is an import of chipsetsw from TCS211, plus our own
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 reconstruction of those parts of TCS211 chipsetsw which were censored
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 out in our starting copy: src/cs/layer1, src/cs/system/main and the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 src/cs/system/bootloader/src stub. Because our reconstruction of these
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 pieces meticulously replicates the original blobs, it still counts as
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 pure TCS211 and is not a hybrid. This chipsetsw division is invariant
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 among all of our configs, both pure TCS211 and TCS2/TCS3 hybrid.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 g23m-aci
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 g23m-fad
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 g23m-gprs
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 g23m-gsm
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 These directories contain the new TCS3 version of the G23M PS+ACI code
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 realm for our blob-free hybrid. The directory layout comes directly
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 from our TCS3.2 source from Peek/FGW: TI previously kept all G23M code
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 under g23m/condat/ms/src, but then they moved to these new g23m-*
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 directories which I (Mother Mychaela) like for their shortness, so we
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 enthusiastically kept the new directory layout. Only two pieces still
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 resided under g23m/condat/ms/src in our TCS3.2 source: ati_ext and upm,
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 which we moved into g23m-aci and g23m-gprs, respectively, where they
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 properly belong.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 gpf2
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 gpf3
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 gpf2 is an import of the gpf tree from TCS211; gpf3 is an import of the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 gpf tree from TCS3.2/LoCosto. Both imports have been pruned to just
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 the sources and headers present in each respective version, without
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 binary libs, Windows tools and other junk.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 Our own reconstruction of OSL and OSX components has been added under
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 gpf2.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 ui3
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 This subtree contains the new TCS3 version of phone UI (BMI+MFW)
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 components, used in our UI-enabled hybrid configs instead of the old
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 TCS2 version under aci2.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 Two versions of ACI
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 ===================
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 ACI is a firmware component that receives a lot of development activity as we
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 add new AT commands and other new-to-FreeCalypso functionality, and for as long
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 as we support both pure TCS211 and TCS2/TCS3 hybrid configurations, we have to
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 maintain two different versions of ACI in parallel. The version under
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 src/aci2/aci is used in pure TCS211 configs and works only with the all-blobs
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 version of G23M PS, whereas the other version under src/g23m-aci/aci is used in
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 hybrid configs going forward. We strive to keep them in sync, but the hybrid
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 version is the forward-looking one - those who seek to understand our firmware
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 starting from a blank slate should focus on the new TCS3 version under g23m-aci.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 Two versions of ALR
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 ===================
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 Our TCS2/TCS3 hybrid involves grafting the new TCS3 version of G23M PS onto the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100 old TCS211 L1, and there naturally has to be a splice point somewhere. ALR is
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 the component of the G23M PS whose job is to interface to L1, and we have the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102 source for both TCS2 and TCS3 versions of ALR. Support for Calypso L1 in the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 new version of ALR is badly bitrotten, thus we took the approach of keeping the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 L1-matching TCS211 version of ALR and putting the splice point just above it.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106 The L1-matching TCS211 version of ALR we are using resides in src/aci2/alr; the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 other version in src/g23m-gsm/alr fails to compile in the Calypso configuration.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 Header file selection
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 =====================
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112 A critical distinction between pure TCS211 vs hybrid configs is the choice of
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 header files. Our pure TCS211 configs include the following stanza:
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115 CONDAT=condat2
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 GPF=gpf2
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 CDGINC=cdg211/cdginc
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 CDGPRIM=cdg211/prim
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 ACI=aci2
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 whereas our hybrid configs include this other stanza:
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 CONDAT=condat3
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 GPF=gpf3
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 CDGINC=cdg-hybrid/cdginc
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 CDGPRIM=cdg-hybrid/sap-inline
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 ACI=g23m-aci
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 The following header files are hereby switched:
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 * Condat headers which would have been under condat/com/inc and
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 condat/com/include if we didn't have our condat2 vs. condat3 dichotomy;
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 * cdginc generated header files - see TCS211-fw-arch document for the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 explanation;
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 * ACI headers.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 The gpf2 vs. gpf3 include switch can be considered superfluous, as there are no
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 substantive differences between the two versions - do a diff -ur src/gpf[23]
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 to see for yourself.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 Configuration and build system
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 ==============================
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 Our firmware configuration and build system is implemented in Bourne shell with
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 a few C helpers. This build system is driven by two kinds of recipes: firmware
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 configuration recipes (configs/*) and individual component build recipes
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 (components/*). The overall fw configuration recipe sets up some Bourne shell
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 variables which apply to the entire fw build configuration (which include the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 header file selection variables described above), invokes the script that
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 generates the same config header files which were generated by TI's original
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 TCS211 build system, and then lists all components which are to be included in
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 the given fw build configuration. For each component to be included, the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 configuration recipe specifies whether it is to be built from source or included
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 as a blob library; for each component to be built from source the corresponding
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 component build recipe comes into play.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 Each component has a name that equals the name of the *.lib linkable library
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 into which it will be compiled, and some components come in multiple variants
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 in relation to deblobbing or hybridization. If a given component is available
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 in multiple variants, then each variant will have its own component build
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 recipe, and the build_lib line in the overall fw configuration recipe specifies
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 the variant to be used.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 The individual component build recipes under components/* specify which actual
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 C source files are to be compiled and with what options. The CFLAGS variable
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 within these component build recipes sets cl470 compiler options that are
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 treated as "voodoo", whereas the CPPFLAGS variable accumulates long lists of -D
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 definitions and -I include paths, all of which have been taken from the BuSyB-
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 generated makefiles of TCS211. Once CFLAGS and CPPFLAGS have been set, the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 actual C files are added to the build with cfile_plain and cfile_str2ind shell
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 function calls; the difference between these two is that cfile_str2ind allows
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 the possibility of preprocessing with str2ind whereas cfile_plain does not; the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 choice of which is used when has been taken from TCS211. Note that the use of
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 str2ind is globally disabled by default and needs to be enabled with
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 USE_STR2IND=1 if it is desired.
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 It also needs to be noted that the sources we got from TI include some C files
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 and sometimes entire components that aren't used in our TCS211-mimicking
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 FreeCalypso fw, and they can be quite confusing when one doesn't realize that
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 they are defunct. There are also many components which are included in some
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 configurations but not in others. To tell whether a given piece of C code is
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 actually used in our firmware or not, you need to first study the overall fw
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 configuration recipe for the config you are working with, and then study the
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 individual component build recipes it invokes to see what actual C files are
343104963a7f doc/Developer-notes written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 being compiled.