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Linux and Bare Metal with shared memory and cache coherency settings?

Question asked by christoph8446 on Nov 30, 2017
Latest reply on Feb 26, 2018 by Yuri Muhin

Hello,

I want to make a shared memory between linux (core0) and my bare metal (Core1) system. It works if I configure the mmu_map_l1_range in the mmu.c in my bare metal system as noncacheable! If I try to change the settings to kOuterInner_WB_WA and I activated SCU (also on CP15) because I want to use cache coherency it doesn’t work anymore! I only modified the MMU TLB setting on my bare metal system. Do I need to change also settings on the linux side to achieve cache coherency for the shared memory area.

 

Thank you in advance!

Regards Christoph

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