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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2016-08-10 16:08:42 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2016-08-11 17:49:25 +0900 |
| commit | 6f579db75411973200224307d6a84d82fc01bb96 (patch) | |
| tree | 806be2070614ebb9218a4fadeaaf4ee891cf91ba /arch | |
| parent | bcc51c1512a3deb6a9fdd37362c6dde32ad3da23 (diff) | |
| download | u-boot-imx-6f579db75411973200224307d6a84d82fc01bb96.zip u-boot-imx-6f579db75411973200224307d6a84d82fc01bb96.tar.gz u-boot-imx-6f579db75411973200224307d6a84d82fc01bb96.tar.bz2 | |
ARM: uniphier: export uniphier_cache_enable/disable functions
The System Cache (outer cache) is used not only as L2 cache,
but also as locked SRAM. The functions for turning on/off it
is necessary whether the L2 cache is enabled or not.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-uniphier/arm32/cache-uniphier.c | 34 | ||||
| -rw-r--r-- | arch/arm/mach-uniphier/arm32/cache-uniphier.h | 2 |
2 files changed, 26 insertions, 10 deletions
diff --git a/arch/arm/mach-uniphier/arm32/cache-uniphier.c b/arch/arm/mach-uniphier/arm32/cache-uniphier.c index 66e9f6b..4bb7d95 100644 --- a/arch/arm/mach-uniphier/arm32/cache-uniphier.c +++ b/arch/arm/mach-uniphier/arm32/cache-uniphier.c @@ -130,6 +130,28 @@ void uniphier_cache_touch_zero_range(u32 start, u32 end, u32 ways) UNIPHIER_SSCOQM_CM_TOUCH_ZERO); } +static void uniphier_cache_endisable(int enable) +{ + u32 tmp; + + tmp = readl(UNIPHIER_SSCC); + if (enable) + tmp |= UNIPHIER_SSCC_ON; + else + tmp &= ~UNIPHIER_SSCC_ON; + writel(tmp, UNIPHIER_SSCC); +} + +void uniphier_cache_enable(void) +{ + uniphier_cache_endisable(1); +} + +void uniphier_cache_disable(void) +{ + uniphier_cache_endisable(0); +} + #ifdef CONFIG_UNIPHIER_L2CACHE_ON void v7_outer_cache_flush_all(void) { @@ -176,21 +198,13 @@ void v7_outer_cache_inval_range(u32 start, u32 end) void v7_outer_cache_enable(void) { - u32 tmp; - writel(U32_MAX, UNIPHIER_SSCLPDAWCR); /* activate all ways */ - tmp = readl(UNIPHIER_SSCC); - tmp |= UNIPHIER_SSCC_ON; - writel(tmp, UNIPHIER_SSCC); + uniphier_cache_enable(); } void v7_outer_cache_disable(void) { - u32 tmp; - - tmp = readl(UNIPHIER_SSCC); - tmp &= ~UNIPHIER_SSCC_ON; - writel(tmp, UNIPHIER_SSCC); + uniphier_cache_disable(); } #endif diff --git a/arch/arm/mach-uniphier/arm32/cache-uniphier.h b/arch/arm/mach-uniphier/arm32/cache-uniphier.h index f67f6ae..733cd80 100644 --- a/arch/arm/mach-uniphier/arm32/cache-uniphier.h +++ b/arch/arm/mach-uniphier/arm32/cache-uniphier.h @@ -13,5 +13,7 @@ void uniphier_cache_prefetch_range(u32 start, u32 end, u32 ways); void uniphier_cache_touch_range(u32 start, u32 end, u32 ways); void uniphier_cache_touch_zero_range(u32 start, u32 end, u32 ways); +void uniphier_cache_enable(void); +void uniphier_cache_disable(void); #endif /* __CACHE_UNIPHIER_H */ |