From: Paul Mundt Date: Thu, 2 Apr 2009 08:40:16 +0000 (+0900) Subject: sh: Kill off broken direct-mapped cache mode. X-Git-Tag: v2.6.30-rc1~200^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e8208828dc014dc0193dc5558995556df0fbe3a5;p=profile%2Fivi%2Fkernel-x86-ivi.git 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 --- 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