S3: Allow using non-DCache RAM#5860
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bjoernQ
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Jul 9, 2026
| */ | ||
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| INCLUDE "memory_extras.x" | ||
| /* reserved at the start of DRAM for the BT stack */ |
bjoernQ
reviewed
Jul 9, 2026
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can't comment there but in the proc-macro - shouldn't we treat the new section like dram2_uninit for the |
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We'll have to dig into hardware defaults - if on powerup the cache is set to 32k, we can even allow persistent data in that section. If it's 64, we can't allow initialized data, either. Hardware default is 32K but the bootloader configures it, too, to a value set in build time 🤔 OK because the bootloader isn't under our control, we have to play this safe. |
bjoernQ
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Jul 10, 2026
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Closes #4069
Changelog
esp-hal
#[ram(unstable(dcache_reclaimed))]to allow using memory not taken up by data cacheesp-hal-procmacros
#[ram(unstable(dcache_reclaimed))]to allow using memory not taken up by data cache