diff options
Diffstat (limited to 'kernel/arch/arc/include/asm/mmu.h')
| -rw-r--r-- | kernel/arch/arc/include/asm/mmu.h | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/kernel/arch/arc/include/asm/mmu.h b/kernel/arch/arc/include/asm/mmu.h index 8c84ae98c..b144d7ca7 100644 --- a/kernel/arch/arc/include/asm/mmu.h +++ b/kernel/arch/arc/include/asm/mmu.h @@ -15,24 +15,43 @@ #define CONFIG_ARC_MMU_VER 2 #elif defined(CONFIG_ARC_MMU_V3) #define CONFIG_ARC_MMU_VER 3 +#elif defined(CONFIG_ARC_MMU_V4) +#define CONFIG_ARC_MMU_VER 4 #endif /* MMU Management regs */ #define ARC_REG_MMU_BCR 0x06f +#if (CONFIG_ARC_MMU_VER < 4) #define ARC_REG_TLBPD0 0x405 #define ARC_REG_TLBPD1 0x406 +#define ARC_REG_TLBPD1HI 0 /* Dummy: allows code sharing with ARC700 */ #define ARC_REG_TLBINDEX 0x407 #define ARC_REG_TLBCOMMAND 0x408 #define ARC_REG_PID 0x409 #define ARC_REG_SCRATCH_DATA0 0x418 +#else +#define ARC_REG_TLBPD0 0x460 +#define ARC_REG_TLBPD1 0x461 +#define ARC_REG_TLBPD1HI 0x463 +#define ARC_REG_TLBINDEX 0x464 +#define ARC_REG_TLBCOMMAND 0x465 +#define ARC_REG_PID 0x468 +#define ARC_REG_SCRATCH_DATA0 0x46c +#endif /* Bits in MMU PID register */ -#define MMU_ENABLE (1 << 31) /* Enable MMU for process */ +#define __TLB_ENABLE (1 << 31) +#define __PROG_ENABLE (1 << 30) +#define MMU_ENABLE (__TLB_ENABLE | __PROG_ENABLE) /* Error code if probe fails */ #define TLB_LKUP_ERR 0x80000000 +#if (CONFIG_ARC_MMU_VER < 4) #define TLB_DUP_ERR (TLB_LKUP_ERR | 0x00000001) +#else +#define TLB_DUP_ERR (TLB_LKUP_ERR | 0x40000000) +#endif /* TLB Commands */ #define TLBWrite 0x1 @@ -45,6 +64,11 @@ #define TLBIVUTLB 0x6 /* explicitly inv uTLBs */ #endif +#if (CONFIG_ARC_MMU_VER >= 4) +#define TLBInsertEntry 0x7 +#define TLBDeleteEntry 0x8 +#endif + #ifndef __ASSEMBLY__ typedef struct { @@ -61,6 +85,11 @@ void arc_mmu_init(void); extern char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len); void read_decode_mmu_bcr(void); +static inline int is_pae40_enabled(void) +{ + return IS_ENABLED(CONFIG_ARC_HAS_PAE40); +} + #endif /* !__ASSEMBLY__ */ #endif |