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.c infrastructure 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 dcache
lib_arm/cache-cp15.c | 37 +++++++++++++++++++++++++++++++++++++ lib_arm/cache.c | 6 ++++++ 2 files changed, 43 insertions(+), 0 deletions(-)