1 #ifndef _ASM_POWERPC_MMU_44X_H_
2 #define _ASM_POWERPC_MMU_44X_H_
7 #define PPC44x_MMUCR_TID 0x000000ff
8 #define PPC44x_MMUCR_STS 0x00010000
10 #define PPC44x_TLB_PAGEID 0
11 #define PPC44x_TLB_XLAT 1
12 #define PPC44x_TLB_ATTRIB 2
14 /* Page identification fields */
15 #define PPC44x_TLB_EPN_MASK 0xfffffc00 /* Effective Page Number */
16 #define PPC44x_TLB_VALID 0x00000200 /* Valid flag */
17 #define PPC44x_TLB_TS 0x00000100 /* Translation address space */
18 #define PPC44x_TLB_1K 0x00000000 /* Page sizes */
19 #define PPC44x_TLB_4K 0x00000010
20 #define PPC44x_TLB_16K 0x00000020
21 #define PPC44x_TLB_64K 0x00000030
22 #define PPC44x_TLB_256K 0x00000040
23 #define PPC44x_TLB_1M 0x00000050
24 #define PPC44x_TLB_16M 0x00000070
25 #define PPC44x_TLB_256M 0x00000090
27 /* Translation fields */
28 #define PPC44x_TLB_RPN_MASK 0xfffffc00 /* Real Page Number */
29 #define PPC44x_TLB_ERPN_MASK 0x0000000f
31 /* Storage attribute and access control fields */
32 #define PPC44x_TLB_ATTR_MASK 0x0000ff80
33 #define PPC44x_TLB_U0 0x00008000 /* User 0 */
34 #define PPC44x_TLB_U1 0x00004000 /* User 1 */
35 #define PPC44x_TLB_U2 0x00002000 /* User 2 */
36 #define PPC44x_TLB_U3 0x00001000 /* User 3 */
37 #define PPC44x_TLB_W 0x00000800 /* Caching is write-through */
38 #define PPC44x_TLB_I 0x00000400 /* Caching is inhibited */
39 #define PPC44x_TLB_M 0x00000200 /* Memory is coherent */
40 #define PPC44x_TLB_G 0x00000100 /* Memory is guarded */
41 #define PPC44x_TLB_E 0x00000080 /* Memory is guarded */
43 #define PPC44x_TLB_PERM_MASK 0x0000003f
44 #define PPC44x_TLB_UX 0x00000020 /* User execution */
45 #define PPC44x_TLB_UW 0x00000010 /* User write */
46 #define PPC44x_TLB_UR 0x00000008 /* User read */
47 #define PPC44x_TLB_SX 0x00000004 /* Super execution */
48 #define PPC44x_TLB_SW 0x00000002 /* Super write */
49 #define PPC44x_TLB_SR 0x00000001 /* Super read */
51 /* Number of TLB entries */
52 #define PPC44x_TLB_SIZE 64
56 extern unsigned int tlb_44x_hwater;
60 unsigned long vdso_base;
63 #endif /* !__ASSEMBLY__ */
65 #ifndef CONFIG_PPC_EARLY_DEBUG_44x
66 #define PPC44x_EARLY_TLBS 1
68 #define PPC44x_EARLY_TLBS 2
69 #define PPC44x_EARLY_DEBUG_VIRTADDR (ASM_CONST(0xf0000000) \
70 | (ASM_CONST(CONFIG_PPC_EARLY_DEBUG_44x_PHYSLOW) & 0xffff))
73 /* Size of the TLBs used for pinning in lowmem */
74 #define PPC_PIN_SIZE (1 << 28) /* 256M */
76 #endif /* _ASM_POWERPC_MMU_44X_H_ */