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authorPaul Mundt <lethal@linux-sh.org>2009-04-02 17:40:16 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-04-02 17:40:16 +0900
commite8208828dc014dc0193dc5558995556df0fbe3a5 (patch)
tree4cecdf10e8215f65f531af98da1f207712f2e96c
parente869a90ee1235a4f89ecb956e7b7d724d65217c8 (diff)
downloadop-kernel-dev-e8208828dc014dc0193dc5558995556df0fbe3a5.zip
op-kernel-dev-e8208828dc014dc0193dc5558995556df0fbe3a5.tar.gz
sh: Kill off broken direct-mapped cache mode.
Forcing direct-mapped worked on certain older 2-way set associative parts, but was always error prone on 4-way parts. As these are the norm these days, there is not much point in continuing to support this mode. Most of the folks that used direct-mapped mode generally just wanted writethrough caching in the first place.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
-rw-r--r--arch/sh/kernel/cpu/sh4/probe.c5
-rw-r--r--arch/sh/mm/Kconfig12
2 files changed, 0 insertions, 17 deletions
diff --git a/arch/sh/kernel/cpu/sh4/probe.c b/arch/sh/kernel/cpu/sh4/probe.c
index 3d3a3c4..91e3677 100644
--- a/arch/sh/kernel/cpu/sh4/probe.c
+++ b/arch/sh/kernel/cpu/sh4/probe.c
@@ -199,11 +199,6 @@ int __init detect_cpu_and_cache_system(void)
break;
}
-#ifdef CONFIG_SH_DIRECT_MAPPED
- boot_cpu_data.icache.ways = 1;
- boot_cpu_data.dcache.ways = 1;
-#endif
-
#ifdef CONFIG_CPU_HAS_PTEA
boot_cpu_data.flags |= CPU_HAS_PTEA;
#endif
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 10c2435..d4079ca 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -251,18 +251,6 @@ config SH7705_CACHE_32KB
depends on CPU_SUBTYPE_SH7705
default y
-config SH_DIRECT_MAPPED
- bool "Use direct-mapped caching"
- default n
- help
- Selecting this option will configure the caches to be direct-mapped,
- even if the cache supports a 2 or 4-way mode. This is useful primarily
- for debugging on platforms with 2 and 4-way caches (SH7750R/SH7751R,
- SH4-202, SH4-501, etc.)
-
- Turn this option off for platforms that do not have a direct-mapped
- cache, and you have no need to run the caches in such a configuration.
-
choice
prompt "Cache mode"
default CACHE_WRITEBACK if CPU_SH2A || CPU_SH3 || CPU_SH4 || CPU_SH5
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