suspect-devices/circuitpython/supervisor/linker.h, branch main CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=main 2021-03-18T23:55:42+00:00 Redo RP2040 flash settings 2021-03-18T23:55:42+00:00 Scott Shawcroft scott@tannewt.org 2021-03-04T21:12:24+00:00 urn:sha1:5d2b60cbf69c99abd6984c298d4f052514221177 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 run code formatting script 2021-03-15T13:57:36+00:00 microDev 70126934+microDev1@users.noreply.github.com 2021-03-15T13:57:36+00:00 urn:sha1:a52eb88031620a81521b937f2a0651dbac2bb350 Linker file restructure, TCM and MPU additions 2020-04-03T20:33:18+00:00 Lucian Copeland hierophect@gmail.com 2020-04-02T20:15:12+00:00 urn:sha1:9761672d42c489af215a8873ddfa71b62434623c merge and docs 2020-04-01T17:52:53+00:00 Lucian Copeland hierophect@gmail.com 2020-04-01T17:52:53+00:00 urn:sha1:2f764ded6379786d8d17322fa2e859fd102d5397 Implement requested changes 2020-04-01T17:02:05+00:00 Lucian Copeland hierophect@gmail.com 2020-04-01T17:02:05+00:00 urn:sha1:a89928c13c748b7f25bd4e734cfe487b0020a25d Refine iMX RT memory layout and add three boards 2020-01-18T01:36:08+00:00 Scott Shawcroft scott@tannewt.org 2020-01-09T04:32:45+00:00 urn:sha1:7d8dac9211dab92d750a0351335b4ad3fffc05e2 Introduces a way to place CircuitPython code and data into tightly coupled memory (TCM) which is accessible by the CPU in a single cycle. It also frees up room in the corresponding cache for intermittent data. Loading from external flash is slow! The data cache is also now enabled. Adds support for the iMX RT 1021 chip. Adds three new boards: * iMX RT 1020 EVK * iMX RT 1060 EVK * Teensy 4.0 Related to #2492, #2472 and #2477. Fixes #2475.