2 * Bit definitions for the MCF54xx ACR and CACR registers.
9 * Define the Cache register flags.
11 #define CACR_DEC 0x80000000 /* Enable data cache */
12 #define CACR_DWP 0x40000000 /* Data write protection */
13 #define CACR_DESB 0x20000000 /* Enable data store buffer */
14 #define CACR_DDPI 0x10000000 /* Disable invalidation by CPUSHL */
15 #define CACR_DHCLK 0x08000000 /* Half data cache lock mode */
16 #define CACR_DDCM_WT 0x00000000 /* Write through cache*/
17 #define CACR_DDCM_CP 0x02000000 /* Copyback cache */
18 #define CACR_DDCM_P 0x04000000 /* No cache, precise */
19 #define CACR_DDCM_IMP 0x06000000 /* No cache, imprecise */
20 #define CACR_DCINVA 0x01000000 /* Invalidate data cache */
21 #define CACR_BEC 0x00080000 /* Enable branch cache */
22 #define CACR_BCINVA 0x00040000 /* Invalidate branch cache */
23 #define CACR_IEC 0x00008000 /* Enable instruction cache */
24 #define CACR_DNFB 0x00002000 /* Inhibited fill buffer */
25 #define CACR_IDPI 0x00001000 /* Disable CPUSHL */
26 #define CACR_IHLCK 0x00000800 /* Intruction cache half lock */
27 #define CACR_IDCM 0x00000400 /* Intruction cache inhibit */
28 #define CACR_ICINVA 0x00000100 /* Invalidate instr cache */
30 #define ACR_BASE_POS 24 /* Address Base */
31 #define ACR_MASK_POS 16 /* Address Mask */
32 #define ACR_ENABLE 0x00008000 /* Enable address */
33 #define ACR_USER 0x00000000 /* User mode access only */
34 #define ACR_SUPER 0x00002000 /* Supervisor mode only */
35 #define ACR_ANY 0x00004000 /* Match any access mode */
36 #define ACR_CM_WT 0x00000000 /* Write through mode */
37 #define ACR_CM_CP 0x00000020 /* Copyback mode */
38 #define ACR_CM_OFF_PRE 0x00000040 /* No cache, precise */
39 #define ACR_CM_OFF_IMP 0x00000060 /* No cache, imprecise */
40 #define ACR_CM 0x00000060 /* Cache mode mask */
41 #define ACR_WPROTECT 0x00000004 /* Write protect */
45 static inline void __m54xx_flush_cache_all(void)
48 * Use cpushl to push and invalidate all cache lines.
49 * Gas doesn't seem to know how to generate the ColdFire
50 * cpushl instruction... Oh well, bit stuff it for now.
52 __asm__ __volatile__ (
60 "cmpl #0x00000800,%%a0\n\t"
65 "movel #0xb6088500,%%d0\n\t"
66 "movec %%d0,%%CACR\n\t"
70 #define __flush_cache_all() __m54xx_flush_cache_all()
72 #endif /* __ASSEMBLY__ */
74 #endif /* m54xxacr_h */