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authorDavid Howells <dhowells@redhat.com>2010-10-27 12:28:41 -0400
committerDavid Howells <dhowells@redhat.com>2010-10-27 12:28:41 -0400
commit0bc42d7fcb0acaab4202db97ff2de475424bf9b4 (patch)
tree4ca3bbe604cda0f578de150b90aa4032ad22943d /arch/mn10300/Kconfig
parent86c0f935c1eee1d778b43895f80c9d27a896dfd9 (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/Kconfig29
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
139choice 139source "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
157config MN10300_CACHE_WBACK
158 bool "Write-Back"
159
160config MN10300_CACHE_WTHRU
161 bool "Write-Through"
162
163config MN10300_CACHE_DISABLED
164 bool "Disabled"
165
166endchoice
167 140
168menu "Memory layout options" 141menu "Memory layout options"
169 142