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rp2xxx: Update readme to describe boot process and flashless targets#734

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mattnite merged 2 commits intomainfrom
grazfather/rp2xxx_flashless_notes
Nov 25, 2025
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rp2xxx: Update readme to describe boot process and flashless targets#734
mattnite merged 2 commits intomainfrom
grazfather/rp2xxx_flashless_notes

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@Grazfather
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@Grazfather Grazfather commented Nov 25, 2025

I found my old notes I was writing when I originally added support for flashless targets.

I cleaned it up and gave it a once over. Hopefully it's helpful.

@Grazfather Grazfather requested a review from tact1m4n3 November 25, 2025 00:34
Comment on lines +81 to +83
**`.ram_vectors` section** (NOLOAD):
- Space for runtime-modifiable vector table
- Not initialized from flash
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This section isn't used anymore. I changed the code to use .data or .rodata (on riscv) and on cortex_m it is placed in data because ram_vector_table is declared using var. We can probably take it out. Is there a good reason to use a custom section?

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Happy to update! This was just from what I gleaned from reading it, and it makes sense it's out of date.

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We should also put stuff like this on the website

@Grazfather Grazfather force-pushed the grazfather/rp2xxx_flashless_notes branch from aaf3a73 to 6581458 Compare November 25, 2025 13:22
@mattnite mattnite merged commit 134a7d0 into main Nov 25, 2025
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@mattnite mattnite deleted the grazfather/rp2xxx_flashless_notes branch November 25, 2025 23:17
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3 participants