Change ARM Cache Type from Write-Back Cached Write Allocate to Write-Back, No Allocate
richardliu at ms1.techarea.org
Sun Apr 18 23:09:11 EDT 2010
Based on ARM11 MPCore TRM r1p0
At TLB table, TEX cache memory support 4 type cache types
2) Write-Back cached Write Allocate, Buffered
3) Write-Through cached, No Allocate on Write, Buffered
4) Write-Back cached, No Allocate on Write, Buffered.
From ARM's information, if change the TEX type to Write-Through,
the L1 Cache would be "behavior is noncacheable"
I think we can disable L1/L2 cache to reach the same result.
If want to change the default setting from "Write-Back cached Write
Allocate, Buffered" to "Write-Back cached, No Allocate on Write, Buffered".
How to modify the build_mem_type_table in file mmu.c?
And should it need more patches on others part like L1 or L2 coherence
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