diff options
| author | David Howells <dhowells@redhat.com> | 2010-10-27 12:28:41 -0400 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2010-10-27 12:28:41 -0400 |
| commit | 0bc42d7fcb0acaab4202db97ff2de475424bf9b4 (patch) | |
| tree | 4ca3bbe604cda0f578de150b90aa4032ad22943d /arch/mn10300/Kconfig | |
| parent | 86c0f935c1eee1d778b43895f80c9d27a896dfd9 (diff) | |
MN10300: Cache: Split cache bits out of arch Kconfig
Split the cache bits out of arch/mn10300/Kconfig as they're quite complex.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'arch/mn10300/Kconfig')
| -rw-r--r-- | arch/mn10300/Kconfig | 29 |
1 files changed, 1 insertions, 28 deletions
diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig index eab0c2aa95cd..069e34d4c4ac 100644 --- a/arch/mn10300/Kconfig +++ b/arch/mn10300/Kconfig | |||
| @@ -136,34 +136,7 @@ config FPU | |||
| 136 | default y | 136 | default y |
| 137 | depends on MN10300_PROC_MN103E010 | 137 | depends on MN10300_PROC_MN103E010 |
| 138 | 138 | ||
| 139 | choice | 139 | source "arch/mn10300/mm/Kconfig.cache" |
| 140 | prompt "CPU Caching mode" | ||
| 141 | default MN10300_CACHE_WBACK | ||
| 142 | help | ||
| 143 | This option determines the caching mode for the kernel. | ||
| 144 | |||
| 145 | Write-Back caching mode involves the all reads and writes causing | ||
| 146 | the affected cacheline to be read into the cache first before being | ||
| 147 | operated upon. Memory is not then updated by a write until the cache | ||
| 148 | is filled and a cacheline needs to be displaced from the cache to | ||
| 149 | make room. Only at that point is it written back. | ||
| 150 | |||
| 151 | Write-Through caching only fetches cachelines from memory on a | ||
| 152 | read. Writes always get written directly to memory. If the affected | ||
| 153 | cacheline is also in cache, it will be updated too. | ||
| 154 | |||
| 155 | The final option is to turn of caching entirely. | ||
| 156 | |||
| 157 | config MN10300_CACHE_WBACK | ||
| 158 | bool "Write-Back" | ||
| 159 | |||
| 160 | config MN10300_CACHE_WTHRU | ||
| 161 | bool "Write-Through" | ||
| 162 | |||
| 163 | config MN10300_CACHE_DISABLED | ||
| 164 | bool "Disabled" | ||
| 165 | |||
| 166 | endchoice | ||
| 167 | 140 | ||
| 168 | menu "Memory layout options" | 141 | menu "Memory layout options" |
| 169 | 142 | ||
