Commit | Line | Data |
---|---|---|
c605782b BH |
1 | #ifndef _ASM_POWERPC_PTE_FSL_BOOKE_H |
2 | #define _ASM_POWERPC_PTE_FSL_BOOKE_H | |
3 | #ifdef __KERNEL__ | |
4 | ||
5 | /* PTE bit definitions for Freescale BookE SW loaded TLB MMU based | |
6 | * processors | |
7 | * | |
8 | MMU Assist Register 3: | |
9 | ||
10 | 32 33 34 35 36 ... 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | |
11 | RPN...................... 0 0 U0 U1 U2 U3 UX SX UW SW UR SR | |
12 | ||
13 | - PRESENT *must* be in the bottom three bits because swap cache | |
14 | entries use the top 29 bits. | |
15 | ||
16 | - FILE *must* be in the bottom three bits because swap cache | |
17 | entries use the top 29 bits. | |
18 | */ | |
19 | ||
20 | /* Definitions for FSL Book-E Cores */ | |
21 | #define _PAGE_PRESENT 0x00001 /* S: PTE contains a translation */ | |
22 | #define _PAGE_USER 0x00002 /* S: User page (maps to UR) */ | |
23 | #define _PAGE_FILE 0x00002 /* S: when !present: nonlinear file mapping */ | |
24 | #define _PAGE_RW 0x00004 /* S: Write permission (SW) */ | |
25 | #define _PAGE_DIRTY 0x00008 /* S: Page dirty */ | |
26 | #define _PAGE_HWEXEC 0x00010 /* H: SX permission */ | |
27 | #define _PAGE_ACCESSED 0x00020 /* S: Page referenced */ | |
28 | ||
29 | #define _PAGE_ENDIAN 0x00040 /* H: E bit */ | |
30 | #define _PAGE_GUARDED 0x00080 /* H: G bit */ | |
31 | #define _PAGE_COHERENT 0x00100 /* H: M bit */ | |
32 | #define _PAGE_NO_CACHE 0x00200 /* H: I bit */ | |
33 | #define _PAGE_WRITETHRU 0x00400 /* H: W bit */ | |
34 | #define _PAGE_SPECIAL 0x00800 /* S: Special page */ | |
35 | ||
36 | #ifdef CONFIG_PTE_64BIT | |
37 | /* ERPN in a PTE never gets cleared, ignore it */ | |
38 | #define _PTE_NONE_MASK 0xffffffffffff0000ULL | |
a7d2dac8 BH |
39 | /* We extend the size of the PTE flags area when using 64-bit PTEs */ |
40 | #define PTE_RPN_SHIFT (PAGE_SHIFT + 8) | |
c605782b BH |
41 | #endif |
42 | ||
43 | #define _PMD_PRESENT 0 | |
44 | #define _PMD_PRESENT_MASK (PAGE_MASK) | |
45 | #define _PMD_BAD (~PAGE_MASK) | |
46 | ||
47 | #endif /* __KERNEL__ */ | |
48 | #endif /* _ASM_POWERPC_PTE_FSL_BOOKE_H */ |