FreeCalypso > hg > fc-tourmaline
comparison doc/Blob-status @ 50:a62e5bf88434
first round of documentation
| author | Mychaela Falconia <falcon@freecalypso.org> |
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| date | Sun, 18 Oct 2020 18:08:15 +0000 |
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| 49:4e178a0e90f6 | 50:a62e5bf88434 |
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| 1 State of blobs in FreeCalypso firmware | |
| 2 ====================================== | |
| 3 | |
| 4 FC Tourmaline is almost completely deblobbed. Only the following very small | |
| 5 components exist in the form of blobs (prebuilt binary objects for which we | |
| 6 have no exact corresponding source) in the standard Tourmaline build: | |
| 7 | |
| 8 * OSL and OSX glue components of GPF: 14992 bytes of code | |
| 9 * TMS470 compiler's RTS library (libc/libgcc equivalent): 13152 bytes of code | |
| 10 | |
| 11 For OSL and OSX we do have reconstructed C code written based on disassembly of | |
| 12 the blobs, but I (Mother Mychaela) do not consider the current state of this C | |
| 13 reconstruction to be fit for production use - hence standard Tourmaline fw | |
| 14 builds use blob versions of these components. However, our configuration and | |
| 15 build system gives you the freedom to select which version of each component | |
| 16 you would rather use; the selection is made with Bourne shell config variables | |
| 17 on the configure.sh invokation line: | |
| 18 | |
| 19 OSL=0 use the blob version of OSL | |
| 20 OSL=1 use the reconstructed C version of OSL | |
| 21 OSX=0 use the blob version of OSX | |
| 22 OSX=1 use the reconstructed C version of OSX | |
| 23 | |
| 24 The current default is OSL=0 and OSX=0. | |
| 25 | |
| 26 RTS library | |
| 27 =========== | |
| 28 | |
| 29 We do have source code for some versions of the TMS470 compiler's RTS library, | |
| 30 but they may not be exactly corresponding to the blob version from TCS211 which | |
| 31 we are using. This area is deemed to be such a low priority that no real | |
| 32 investigation has been done yet. |