RFC dcache on ARM
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Cover letter [U-Boot] [PATCH RFC 0/2] dcache on ARM
Alessandro,
I don't see the flush_cache() call inside cmd_bootm.c. Don't you think it is necessary before jumping to Linux? Or am I missing something?
Rgds,
Arm
Quoted 27 lines · Alessandro Rubini
These patches enable the dcache for ARM9. It's mainly an RFC, as some details are still to be sorted out, but they work fine (and the speed increase is noticeable for kernel boots and cp.b -- didn't make more tests.
I tested the code on at91sam9263ek and nhk8815. No makeall at this point, as I'm mainly interested in comments here.
This is based on the
cache-cp15.cinfrastructure set up by Jean-Christophe for icache enabling.I'm sure Drasko Draskovic has better code, but since he has sent no a patch yet (asked in Mar 2009, and then again and again), here is my approach.
Alessandro Rubini (2):
flush cache for arm926
arm cp15: setup mmu and enable dcachelib_arm/cache-cp15.c | 37 +++++++++++++++++++++++++++++++++++++ lib_arm/cache.c | 6 ++++++ 2 files changed, 43 insertions(+), 0 deletions(-)_______________________________________________
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