diff options
| -rw-r--r-- | arch/m68k/include/asm/m52xxacr.h | 30 | ||||
| -rw-r--r-- | arch/m68knommu/Kconfig | 32 |
2 files changed, 48 insertions, 14 deletions
diff --git a/arch/m68k/include/asm/m52xxacr.h b/arch/m68k/include/asm/m52xxacr.h index 52230b5e1e4d..701f680bced9 100644 --- a/arch/m68k/include/asm/m52xxacr.h +++ b/arch/m68k/include/asm/m52xxacr.h @@ -53,23 +53,25 @@ #define ACR_WPROTECT 0x00000004 /* Write protect region */ /* - * Set the cache controller settings we will use. This code is set to - * only use the instruction cache, even on the controllers that support - * split cache. (This setup is trying to preserve the existing behavior - * for now, in the furture I hope to actually use the split cache mode). + * Set the cache controller settings we will use. On the cores that support + * a split cache configuration we allow all the combinations at Kconfig + * time. For those cores that only have an instruction cache we just set + * that as on. */ -#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || \ - defined(CONFIG_M5249) || defined(CONFIG_M5272) -#define CACHE_INIT (CACR_CINV) -#define CACHE_MODE (CACR_CENB + CACR_DCM) +#if defined(CONFIG_CACHE_I) +#define CACHE_TYPE CACR_DISD +#elif defined(CONFIG_CACHE_D) +#define CACHE_TYPE CACR_DISI #else -#ifdef CONFIG_COLDFIRE_SW_A7 -#define CACHE_INIT (CACR_CINV + CACR_DISD) -#define CACHE_MODE (CACR_CENB + CACR_DISD + CACR_DCM) -#else -#define CACHE_INIT (CACR_CINV + CACR_DISD + CACR_EUSP) -#define CACHE_MODE (CACR_CENB + CACR_DISD + CACR_DCM + CACR_EUSP) +#define CACHE_TYPE #endif + +#if defined(CONFIG_HAVE_CACHE_SPLIT) +#define CACHE_INIT (CACR_CINV + CACHE_TYPE + CACR_EUSP) +#define CACHE_MODE (CACR_CENB + CACHE_TYPE + CACR_DCM + CACR_EUSP) +#else +#define CACHE_INIT (CACR_CINV) +#define CACHE_MODE (CACR_CENB + CACR_DCM) #endif #define CACHE_INVALIDATE (CACHE_MODE + CACR_CINV) diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig index e6f482d18d05..61c29081b998 100644 --- a/arch/m68knommu/Kconfig +++ b/arch/m68knommu/Kconfig @@ -79,6 +79,9 @@ config COLDFIRE_SW_A7 bool default n +config HAVE_CACHE_SPLIT + bool + source "init/Kconfig" source "kernel/Kconfig.freezer" @@ -124,12 +127,14 @@ config M5206e config M520x bool "MCF520x" select GENERIC_CLOCKEVENTS + select HAVE_CACHE_SPLIT help Freescale Coldfire 5207/5208 processor support. config M523x bool "MCF523x" select GENERIC_CLOCKEVENTS + select HAVE_CACHE_SPLIT help Freescale Coldfire 5230/1/2/4/5 processor support @@ -141,6 +146,7 @@ config M5249 config M5271 bool "MCF5271" + select HAVE_CACHE_SPLIT help Freescale (Motorola) ColdFire 5270/5271 processor support. @@ -152,12 +158,14 @@ config M5272 config M5275 bool "MCF5275" + select HAVE_CACHE_SPLIT help Freescale (Motorola) ColdFire 5274/5275 processor support. config M528x bool "MCF528x" select GENERIC_CLOCKEVENTS + select HAVE_CACHE_SPLIT help Motorola ColdFire 5280/5282 processor support. @@ -250,6 +258,30 @@ config OLDMASK Build support for the older revision ColdFire 5307 silicon. Specifically this is the 1H55J mask revision. +if HAVE_CACHE_SPLIT +choice + prompt "Split Cache Configuration" + default CACHE_I + +config CACHE_I + bool "Instruction" + help + Use all of the ColdFire CPU cache memory as an instruction cache. + +config CACHE_D + bool "Data" + help + Use all of the ColdFire CPU cache memory as a data cache. + +config CACHE_BOTH + bool "Both" + help + Split the ColdFire CPU cache, and use half as an instruction cache + and half as a data cache. +endchoice + +endif + comment "Platform" config PILOT3 |