| /* |
| * 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 /* Instruction cache half lock */ |
| #define CACR_IDCM 0x00000400 /* Instruction 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_SP 0x00000008 /* Supervisor protect */ |
| #define ACR_WPROTECT 0x00000004 /* Write protect */ |
| |
| #define ACR_BA(x) ((x) & 0xff000000) |
| #define ACR_ADMSK(x) ((((x) - 1) & 0xff000000) >> 8) |
| |
| #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 */ |
| |
| #elif defined(CONFIG_M5441x) |
| |
| #define ICACHE_SIZE 0x2000 /* instruction - 8k */ |
| #define DCACHE_SIZE 0x2000 /* data - 8k */ |
| #endif |
| |
| #define CACHE_LINE_SIZE 0x0010 /* 16 bytes */ |
| #define CACHE_WAYS 4 /* 4 ways */ |
| |
| #define ICACHE_SET_MASK ((ICACHE_SIZE / 64 - 1) << CACHE_WAYS) |
| #define DCACHE_SET_MASK ((DCACHE_SIZE / 64 - 1) << CACHE_WAYS) |
| #define ICACHE_MAX_ADDR ICACHE_SET_MASK |
| #define DCACHE_MAX_ADDR DCACHE_SET_MASK |
| |
| /* |
| * 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 |
| #define CACHE_INIT (CACR_DCINVA+CACR_BCINVA+CACR_ICINVA) |
| |
| #if defined(CONFIG_MMU) |
| /* |
| * If running with the MMU enabled then we need to map the internal |
| * register region as non-cacheable. And then we map all our RAM as |
| * cacheable and supervisor access only. |
| */ |
| #define ACR0_MODE (ACR_BA(CONFIG_MBAR)+ACR_ADMSK(0x1000000)+ \ |
| ACR_ENABLE+ACR_SUPER+ACR_CM_OFF_PRE+ACR_SP) |
| #if defined(CONFIG_CACHE_COPYBACK) |
| #define ACR1_MODE (ACR_BA(CONFIG_RAMBASE)+ACR_ADMSK(CONFIG_RAMSIZE)+ \ |
| ACR_ENABLE+ACR_SUPER+ACR_SP+ACR_CM_CP) |
| #else |
| #define ACR1_MODE (ACR_BA(CONFIG_RAMBASE)+ACR_ADMSK(CONFIG_RAMSIZE)+ \ |
| ACR_ENABLE+ACR_SUPER+ACR_SP+ACR_CM_WT) |
| #endif |
| #define ACR2_MODE 0 |
| #define ACR3_MODE (ACR_BA(CONFIG_RAMBASE)+ACR_ADMSK(CONFIG_RAMSIZE)+ \ |
| ACR_ENABLE+ACR_SUPER+ACR_SP) |
| |
| #else |
| |
| /* |
| * For the non-MMU enabled case we map all of RAM as cacheable. |
| */ |
| #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_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 /* CONFIG_MMU */ |
| #endif /* m54xxacr_h */ |
