Kconfig.cache revision 344af921e6f23ea82487d76918d2643fcc88c311
1# 2# MN10300 CPU cache options 3# 4 5choice 6 prompt "CPU Caching mode" 7 default MN10300_CACHE_WBACK 8 help 9 This option determines the caching mode for the kernel. 10 11 Write-Back caching mode involves the all reads and writes causing 12 the affected cacheline to be read into the cache first before being 13 operated upon. Memory is not then updated by a write until the cache 14 is filled and a cacheline needs to be displaced from the cache to 15 make room. Only at that point is it written back. 16 17 Write-Through caching only fetches cachelines from memory on a 18 read. Writes always get written directly to memory. If the affected 19 cacheline is also in cache, it will be updated too. 20 21 The final option is to turn of caching entirely. 22 23config MN10300_CACHE_WBACK 24 bool "Write-Back" 25 26config MN10300_CACHE_WTHRU 27 bool "Write-Through" 28 29config MN10300_CACHE_DISABLED 30 bool "Disabled" 31 32endchoice 33 34config MN10300_CACHE_ENABLED 35 def_bool y if !MN10300_CACHE_DISABLED 36