diff options
Diffstat (limited to 'arch/mn10300/mm/Kconfig.cache')
| -rw-r--r-- | arch/mn10300/mm/Kconfig.cache | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/mn10300/mm/Kconfig.cache b/arch/mn10300/mm/Kconfig.cache new file mode 100644 index 000000000000..f5599f47ec15 --- /dev/null +++ b/arch/mn10300/mm/Kconfig.cache @@ -0,0 +1,32 @@ +# +# MN10300 CPU cache options +# + +choice + prompt "CPU Caching mode" + default MN10300_CACHE_WBACK + help + This option determines the caching mode for the kernel. + + Write-Back caching mode involves the all reads and writes causing + the affected cacheline to be read into the cache first before being + operated upon. Memory is not then updated by a write until the cache + is filled and a cacheline needs to be displaced from the cache to + make room. Only at that point is it written back. + + Write-Through caching only fetches cachelines from memory on a + read. Writes always get written directly to memory. If the affected + cacheline is also in cache, it will be updated too. + + The final option is to turn of caching entirely. + +config MN10300_CACHE_WBACK + bool "Write-Back" + +config MN10300_CACHE_WTHRU + bool "Write-Through" + +config MN10300_CACHE_DISABLED + bool "Disabled" + +endchoice |