Alessandro Gatti d468ccce62 extmod/modopenamp: Rework trace buffer setup procedure. ...

This commit reworks the setup procedure for the OpenAMP trace buffer,
used by the libmetal framework to provide cross-core logging data if
needed.

Before these changes, the buffer was provided by MicroPython, as a fixed
size 128 bytes chunk that was accidentally put into the .rodata section,
making it not usable for its intended purpose.

Now, a buffer placed in .bss with a default size of 128 bytes is
provided by MicroPython unless chosen otherwise.  A user-chosen buffer
pointer can be provided to MicroPython using the
MICROPY_PY_OPENAMP_TRACE_BUF preprocessor definition.  If what
MicroPython provides by default is fine, the buffer size can be
overridden with a new value for the MICROPY_PY_OPENAMP_TRACE_BUF_LEN
preprocessor definition instead.

Signed-off-by: Alessandro Gatti <a.gatti@frob.it>

2026-01-04 12:02:59 +11:00

16 KiB

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