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PPC: booke: add tlbnps handling

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When using MAV 2.0 TLB registers, we have another range of TLB registers
available to read the supported page sizes from.

Add SPR definitions for those and add a helper function that we can use
to receive such a bitmap even when using MAV 1.0.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2012-01-21 04:45:46 +01:00
parent ffba87862b
commit a1ef618a37
1 changed files with 25 additions and 0 deletions
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25
target-ppc/cpu.h
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@ -1355,6 +1355,10 @@ static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
#define SPR_BOOKE_DVC2 (0x13F)
#define SPR_BOOKE_TSR (0x150)
#define SPR_BOOKE_TCR (0x154)
#define SPR_BOOKE_TLB0PS (0x158)
#define SPR_BOOKE_TLB1PS (0x159)
#define SPR_BOOKE_TLB2PS (0x15A)
#define SPR_BOOKE_TLB3PS (0x15B)
#define SPR_BOOKE_IVOR0 (0x190)
#define SPR_BOOKE_IVOR1 (0x191)
#define SPR_BOOKE_IVOR2 (0x192)
@ -2116,6 +2120,27 @@ static inline ppcmas_tlb_t *booke206_get_tlbm(CPUState *env, const int tlbn,
return &env->tlb.tlbm[r];
}
/* returns bitmap of supported page sizes for a given TLB */
static inline uint32_t booke206_tlbnps(CPUState *env, const int tlbn)
{
bool mav2 = false;
uint32_t ret = 0;
if (mav2) {
ret = env->spr[SPR_BOOKE_TLB0PS + tlbn];
} else {
uint32_t tlbncfg = env->spr[SPR_BOOKE_TLB0CFG + tlbn];
uint32_t min = (tlbncfg & TLBnCFG_MINSIZE) >> TLBnCFG_MINSIZE_SHIFT;
uint32_t max = (tlbncfg & TLBnCFG_MAXSIZE) >> TLBnCFG_MAXSIZE_SHIFT;
int i;
for (i = min; i <= max; i++) {
ret |= (1 << (i << 1));
}
}
return ret;
}
#endif
extern void (*cpu_ppc_hypercall)(CPUState *);