diff options
| -rw-r--r-- | include/asm-powerpc/mmu-hash32.h | 91 | ||||
| -rw-r--r-- | include/asm-powerpc/mmu.h | 3 |
2 files changed, 94 insertions, 0 deletions
diff --git a/include/asm-powerpc/mmu-hash32.h b/include/asm-powerpc/mmu-hash32.h new file mode 100644 index 00000000000..2d3e183cfeb --- /dev/null +++ b/include/asm-powerpc/mmu-hash32.h @@ -0,0 +1,91 @@ +#ifndef _ASM_POWERPC_MMU_HASH32_H_ +#define _ASM_POWERPC_MMU_HASH32_H_ +/* + * 32-bit hash table MMU support + */ + +/* + * BATs + */ + +/* Block size masks */ +#define BL_128K 0x000 +#define BL_256K 0x001 +#define BL_512K 0x003 +#define BL_1M 0x007 +#define BL_2M 0x00F +#define BL_4M 0x01F +#define BL_8M 0x03F +#define BL_16M 0x07F +#define BL_32M 0x0FF +#define BL_64M 0x1FF +#define BL_128M 0x3FF +#define BL_256M 0x7FF + +/* BAT Access Protection */ +#define BPP_XX 0x00 /* No access */ +#define BPP_RX 0x01 /* Read only */ +#define BPP_RW 0x02 /* Read/write */ + +#ifndef __ASSEMBLY__ +typedef struct _BAT { + struct { + unsigned long bepi:15; /* Effective page index (virtual address) */ + unsigned long :4; /* Unused */ + unsigned long bl:11; /* Block size mask */ + unsigned long vs:1; /* Supervisor valid */ + unsigned long vp:1; /* User valid */ + } batu; /* Upper register */ + struct { + unsigned long brpn:15; /* Real page index (physical address) */ + unsigned long :10; /* Unused */ + unsigned long w:1; /* Write-thru cache */ + unsigned long i:1; /* Cache inhibit */ + unsigned long m:1; /* Memory coherence */ + unsigned long g:1; /* Guarded (MBZ in IBAT) */ + unsigned long :1; /* Unused */ + unsigned long pp:2; /* Page access protections */ + } batl; /* Lower register */ +} BAT; +#endif /* !__ASSEMBLY__ */ + +/* + * Hash table + */ + +/* Values for PP (assumes Ks=0, Kp=1) */ +#define PP_RWXX 0 /* Supervisor read/write, User none */ +#define PP_RWRX 1 /* Supervisor read/write, User read */ +#define PP_RWRW 2 /* Supervisor read/write, User read/write */ +#define PP_RXRX 3 /* Supervisor read, User read */ + +#ifndef __ASSEMBLY__ + +/* Hardware Page Table Entry */ +typedef struct _PTE { + unsigned long v:1; /* Entry is valid */ + unsigned long vsid:24; /* Virtual segment identifier */ + unsigned long h:1; /* Hash algorithm indicator */ + unsigned long api:6; /* Abbreviated page index */ + unsigned long rpn:20; /* Real (physical) page number */ + unsigned long :3; /* Unused */ + unsigned long r:1; /* Referenced */ + unsigned long c:1; /* Changed */ + unsigned long w:1; /* Write-thru cache mode */ + unsigned long i:1; /* Cache inhibited */ + unsigned long m:1; /* Memory coherence */ + unsigned long g:1; /* Guarded */ + unsigned long :1; /* Unused */ + unsigned long pp:2; /* Page protection */ +} PTE; + +typedef struct { + unsigned long id; + unsigned long vdso_base; +} mm_context_t; + +typedef unsigned long phys_addr_t; + +#endif /* !__ASSEMBLY__ */ + +#endif /* _ASM_POWERPC_MMU_HASH32_H_ */ diff --git a/include/asm-powerpc/mmu.h b/include/asm-powerpc/mmu.h index fe510fff890..dae6a71fba4 100644 --- a/include/asm-powerpc/mmu.h +++ b/include/asm-powerpc/mmu.h @@ -5,6 +5,9 @@ #ifdef CONFIG_PPC64 /* 64-bit classic hash table MMU */ # include <asm/mmu-hash64.h> +#elif defined(CONFIG_PPC_STD_MMU) +/* 32-bit classic hash table MMU */ +# include <asm/mmu-hash32.h> #elif defined(CONFIG_44x) /* 44x-style software loaded TLB */ # include <asm/mmu-44x.h> |