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| author | Scott Shawcroft <scott@tannewt.org> | 2021-03-04 13:12:24 -0800 |
|---|---|---|
| committer | Scott Shawcroft <scott@tannewt.org> | 2021-03-18 16:55:42 -0700 |
| commit | 5d2b60cbf69c99abd6984c298d4f052514221177 (patch) | |
| tree | 381adffaf4aa37a641418bcb2a8e6940ce956258 /.github/workflows/pre-commit.yml | |
| parent | 25895153422da1bd3d05f50e4c35ea408f9e4d28 (diff) | |
Redo RP2040 flash settings
This switches stage2 to C and uses Jinja to change the C code based
on flash settings from https://github.com/adafruit/nvm.toml. It
produces the fastest settings for the given set of external flashes.
Flash size is no longer hard coded so switching flashes with similar
capabilities but different sizes should *just work*.
This PR also places "ITCM" code in RAM to save the XIP cache for
code execution. Further optimization is possible. A blink code.py
still requires a number of flash fetches every blink.
Fixes #4041
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