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/
usr/
src/
linux-headers-3.0.0-14/
arch/
m68k/
include/
asm/
- drwxr-xr-x
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Viewing file:  m54xxacr.h (3.51 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/*
* Bit definitions for the MCF54xx ACR and CACR registers.
*/
#ifndef m54xxacr_h
#define m54xxacr_h
/*
* Define the Cache register flags.
*/
#define CACR_DEC 0x80000000 /* Enable data cache */
#define CACR_DWP 0x40000000 /* Data write protection */
#define CACR_DESB 0x20000000 /* Enable data store buffer */
#define CACR_DDPI 0x10000000 /* Disable invalidation by CPUSHL */
#define CACR_DHCLK 0x08000000 /* Half data cache lock mode */
#define CACR_DDCM_WT 0x00000000 /* Write through cache*/
#define CACR_DDCM_CP 0x02000000 /* Copyback cache */
#define CACR_DDCM_P 0x04000000 /* No cache, precise */
#define CACR_DDCM_IMP 0x06000000 /* No cache, imprecise */
#define CACR_DCINVA 0x01000000 /* Invalidate data cache */
#define CACR_BEC 0x00080000 /* Enable branch cache */
#define CACR_BCINVA 0x00040000 /* Invalidate branch cache */
#define CACR_IEC 0x00008000 /* Enable instruction cache */
#define CACR_DNFB 0x00002000 /* Inhibited fill buffer */
#define CACR_IDPI 0x00001000 /* Disable CPUSHL */
#define CACR_IHLCK 0x00000800 /* Intruction cache half lock */
#define CACR_IDCM 0x00000400 /* Intruction cache inhibit */
#define CACR_ICINVA 0x00000100 /* Invalidate instr cache */
#define CACR_EUSP 0x00000020 /* Enable separate user a7 */
#define ACR_BASE_POS 24 /* Address Base */
#define ACR_MASK_POS 16 /* Address Mask */
#define ACR_ENABLE 0x00008000 /* Enable address */
#define ACR_USER 0x00000000 /* User mode access only */
#define ACR_SUPER 0x00002000 /* Supervisor mode only */
#define ACR_ANY 0x00004000 /* Match any access mode */
#define ACR_CM_WT 0x00000000 /* Write through mode */
#define ACR_CM_CP 0x00000020 /* Copyback mode */
#define ACR_CM_OFF_PRE 0x00000040 /* No cache, precise */
#define ACR_CM_OFF_IMP 0x00000060 /* No cache, imprecise */
#define ACR_CM 0x00000060 /* Cache mode mask */
#define ACR_WPROTECT 0x00000004 /* Write protect */
#if defined(CONFIG_M5407)
#define ICACHE_SIZE 0x4000 /* instruction - 16k */
#define DCACHE_SIZE 0x2000 /* data - 8k */
#elif defined(CONFIG_M54xx)
#define ICACHE_SIZE 0x8000 /* instruction - 32k */
#define DCACHE_SIZE 0x8000 /* data - 32k */
#endif
#define CACHE_LINE_SIZE 0x0010 /* 16 bytes */
#define CACHE_WAYS 4 /* 4 ways */
/*
* Version 4 cores have a true harvard style separate instruction
* and data cache. Enable data and instruction caches, also enable write
* buffers and branch accelerator.
*/
/* attention : enabling CACR_DESB requires a "nop" to flush the store buffer */
/* use '+' instead of '|' for assembler's sake */
/* Enable data cache */
/* Enable data store buffer */
/* outside ACRs : No cache, precise */
/* Enable instruction+branch caches */
#if defined(CONFIG_M5407)
#define CACHE_MODE (CACR_DEC+CACR_DESB+CACR_DDCM_P+CACR_BEC+CACR_IEC)
#else
#define CACHE_MODE (CACR_DEC+CACR_DESB+CACR_DDCM_P+CACR_BEC+CACR_IEC+CACR_EUSP)
#endif
#if defined(CONFIG_CACHE_COPYBACK)
#define DATA_CACHE_MODE (ACR_ENABLE+ACR_ANY+ACR_CM_CP)
#else
#define DATA_CACHE_MODE (ACR_ENABLE+ACR_ANY+ACR_CM_WT)
#endif
#define INSN_CACHE_MODE (ACR_ENABLE+ACR_ANY)
#define CACHE_INIT (CACR_DCINVA+CACR_BCINVA+CACR_ICINVA)
#define CACHE_INVALIDATE (CACHE_MODE+CACR_DCINVA+CACR_BCINVA+CACR_ICINVA)
#define CACHE_INVALIDATEI (CACHE_MODE+CACR_BCINVA+CACR_ICINVA)
#define CACHE_INVALIDATED (CACHE_MODE+CACR_DCINVA)
#define ACR0_MODE (0x000f0000+DATA_CACHE_MODE)
#define ACR1_MODE 0
#define ACR2_MODE (0x000f0000+INSN_CACHE_MODE)
#define ACR3_MODE 0
#if ((DATA_CACHE_MODE & ACR_CM) == ACR_CM_CP)
/* Copyback cache mode must push dirty cache lines first */
#define CACHE_PUSH
#endif
#endif /* m54xxacr_h */
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