1a12cf0a8SGreg Ungerer /****************************************************************************/ 2a12cf0a8SGreg Ungerer 3a12cf0a8SGreg Ungerer /* 4a12cf0a8SGreg Ungerer * m52xxacr.h -- ColdFire version 2 core cache support 5a12cf0a8SGreg Ungerer * 6a12cf0a8SGreg Ungerer * (C) Copyright 2010, Greg Ungerer <gerg@snapgear.com> 7a12cf0a8SGreg Ungerer */ 8a12cf0a8SGreg Ungerer 9a12cf0a8SGreg Ungerer /****************************************************************************/ 10a12cf0a8SGreg Ungerer #ifndef m52xxacr_h 11a12cf0a8SGreg Ungerer #define m52xxacr_h 12a12cf0a8SGreg Ungerer /****************************************************************************/ 13a12cf0a8SGreg Ungerer 14a12cf0a8SGreg Ungerer /* 15a12cf0a8SGreg Ungerer * All varients of the ColdFire using version 2 cores have a similar 16a12cf0a8SGreg Ungerer * cache setup. Although not absolutely identical the cache register 17a12cf0a8SGreg Ungerer * definitions are compatible for all of them. Mostly they support a 18a12cf0a8SGreg Ungerer * configurable cache memory that can be instruction only, data only, 19a12cf0a8SGreg Ungerer * or split instruction and data. The exception is the very old version 2 20a12cf0a8SGreg Ungerer * core based parts, like the 5206(e), 5249 and 5272, which are instruction 21a12cf0a8SGreg Ungerer * cache only. Cache size varies from 2k up to 16k. 22a12cf0a8SGreg Ungerer */ 23a12cf0a8SGreg Ungerer 24a12cf0a8SGreg Ungerer /* 25a12cf0a8SGreg Ungerer * Define the Cache Control register flags. 26a12cf0a8SGreg Ungerer */ 27a12cf0a8SGreg Ungerer #define CACR_CENB 0x80000000 /* Enable cache */ 28a12cf0a8SGreg Ungerer #define CACR_CDPI 0x10000000 /* Disable invalidation by CPUSHL */ 29a12cf0a8SGreg Ungerer #define CACR_CFRZ 0x08000000 /* Cache freeze mode */ 30a12cf0a8SGreg Ungerer #define CACR_CINV 0x01000000 /* Invalidate cache */ 31a12cf0a8SGreg Ungerer #define CACR_DISI 0x00800000 /* Disable instruction cache */ 32a12cf0a8SGreg Ungerer #define CACR_DISD 0x00400000 /* Disable data cache */ 33a12cf0a8SGreg Ungerer #define CACR_INVI 0x00200000 /* Invalidate instruction cache */ 34a12cf0a8SGreg Ungerer #define CACR_INVD 0x00100000 /* Invalidate data cache */ 35a12cf0a8SGreg Ungerer #define CACR_CEIB 0x00000400 /* Non-cachable instruction burst */ 36a12cf0a8SGreg Ungerer #define CACR_DCM 0x00000200 /* Default cache mode */ 37a12cf0a8SGreg Ungerer #define CACR_DBWE 0x00000100 /* Buffered write enable */ 38a12cf0a8SGreg Ungerer #define CACR_DWP 0x00000020 /* Write protection */ 39a12cf0a8SGreg Ungerer #define CACR_EUSP 0x00000010 /* Enable separate user a7 */ 40a12cf0a8SGreg Ungerer 41a12cf0a8SGreg Ungerer /* 42a12cf0a8SGreg Ungerer * Define the Access Control register flags. 43a12cf0a8SGreg Ungerer */ 44a12cf0a8SGreg Ungerer #define ACR_BASE_POS 24 /* Address Base (upper 8 bits) */ 45a12cf0a8SGreg Ungerer #define ACR_MASK_POS 16 /* Address Mask (next 8 bits) */ 46a12cf0a8SGreg Ungerer #define ACR_ENABLE 0x00008000 /* Enable this ACR */ 47a12cf0a8SGreg Ungerer #define ACR_USER 0x00000000 /* Allow only user accesses */ 48a12cf0a8SGreg Ungerer #define ACR_SUPER 0x00002000 /* Allow supervisor access only */ 49a12cf0a8SGreg Ungerer #define ACR_ANY 0x00004000 /* Allow any access type */ 50a12cf0a8SGreg Ungerer #define ACR_CENB 0x00000000 /* Caching of region enabled */ 51a12cf0a8SGreg Ungerer #define ACR_CDIS 0x00000040 /* Caching of region disabled */ 52a12cf0a8SGreg Ungerer #define ACR_BWE 0x00000020 /* Write buffer enabled */ 53a12cf0a8SGreg Ungerer #define ACR_WPROTECT 0x00000004 /* Write protect region */ 54a12cf0a8SGreg Ungerer 558ce877a8SGreg Ungerer /* 568ce877a8SGreg Ungerer * Set the cache controller settings we will use. This code is set to 578ce877a8SGreg Ungerer * only use the instruction cache, even on the controllers that support 588ce877a8SGreg Ungerer * split cache. (This setup is trying to preserve the existing behavior 598ce877a8SGreg Ungerer * for now, in the furture I hope to actually use the split cache mode). 608ce877a8SGreg Ungerer */ 618ce877a8SGreg Ungerer #if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || \ 628ce877a8SGreg Ungerer defined(CONFIG_M5249) || defined(CONFIG_M5272) 638ce877a8SGreg Ungerer #define CACHE_INIT (CACR_CINV) 648ce877a8SGreg Ungerer #define CACHE_MODE (CACR_CENB + CACR_DCM) 658ce877a8SGreg Ungerer #else 668ce877a8SGreg Ungerer #ifdef CONFIG_COLDFIRE_SW_A7 678ce877a8SGreg Ungerer #define CACHE_INIT (CACR_CINV + CACR_DISD) 688ce877a8SGreg Ungerer #define CACHE_MODE (CACR_CENB + CACR_DISD + CACR_DCM) 698ce877a8SGreg Ungerer #else 708ce877a8SGreg Ungerer #define CACHE_INIT (CACR_CINV + CACR_DISD + CACR_EUSP) 718ce877a8SGreg Ungerer #define CACHE_MODE (CACR_CENB + CACR_DISD + CACR_DCM + CACR_EUSP) 728ce877a8SGreg Ungerer #endif 738ce877a8SGreg Ungerer #endif 748ce877a8SGreg Ungerer 758ce877a8SGreg Ungerer #define CACHE_INVALIDATE (CACHE_MODE + CACR_CINV) 768ce877a8SGreg Ungerer 778ce877a8SGreg Ungerer #define ACR0_MODE ((CONFIG_RAMBASE & 0xff000000) + \ 788ce877a8SGreg Ungerer (0x000f0000) + \ 798ce877a8SGreg Ungerer (ACR_ENABLE + ACR_ANY + ACR_CENB + ACR_BWE)) 808ce877a8SGreg Ungerer #define ACR1_MODE 0 818ce877a8SGreg Ungerer 82a12cf0a8SGreg Ungerer /****************************************************************************/ 83a12cf0a8SGreg Ungerer #endif /* m52xxsim_h */ 84