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发表于 2009-10-14 10:51:24
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这是我的设置：
void MMU_Init(void)
{
int i,j;
//========================== IMPORTANT NOTE =========================
//The current stack and code area can't be re-mapped in this routine.
//If you want memory map mapped freely, your own sophiscated MMU
//initialization code is needed.
//===================================================================
MMU_DisableDCache();
MMU_DisableICache();
//If write-back is used,the DCache should be cleared.
for(i=0;i<64;i++)
for(j=0;j<8;j++)
MMU_CleanInvalidateDCacheIndex((i<<26)|(j<<5));
MMU_InvalidateICache();
#if 0
//To complete MMU_Init() fast, Icache may be turned on here.
MMU_EnableICache();
#endif
MMU_DisableMMU();
MMU_InvalidateTLB();
//MMU_SetMTT(int vaddrStart,int vaddrEnd,int paddrStart,int attr)
//MMU_SetMTT(0x00000000,0x07f00000,0x00000000,RW_CNB);//bank0
MMU_SetMTT(0x00000000,0x03f00000,(int)__ENTRY,RW_CB); //bank0
MMU_SetMTT(0x04000000,0x07f00000,0,RW_NCNB); //bank0
MMU_SetMTT(0x08000000,0x0ff00000,0x08000000,RW_CNB); //bank1
MMU_SetMTT(0x10000000,0x17f00000,0x10000000,RW_NCNB); //bank2
MMU_SetMTT(0x18000000,0x1ff00000,0x18000000,RW_NCNB); //bank3
//MMU_SetMTT(0x20000000,0x27f00000,0x20000000,RW_CB); //bank4
MMU_SetMTT(0x20000000,0x27f00000,0x20000000,RW_CNB); //bank4 for STRATA Flash
MMU_SetMTT(0x28000000,0x2ff00000,0x28000000,RW_NCNB); //bank5
//30f00000->30100000, 31000000->30200000
MMU_SetMTT(0x30000000,0x30100000,0x30000000,RW_CB); //bank6-1
MMU_SetMTT(0x30200000,0x33e00000,0x30200000,RW_CB); //bank6-2
MMU_SetMTT(0x33f00000,0x33f00000,0x33f00000,RW_CB); //bank6-3
MMU_SetMTT(0x38000000,0x3ff00000,0x38000000,RW_NCNB); //bank7
MMU_SetMTT(0x40000000,0x47f00000,0x40000000,RW_NCNB); //SFR
MMU_SetMTT(0x48000000,0x5af00000,0x48000000,RW_NCNB); //SFR
MMU_SetMTT(0x5b000000,0x5b000000,0x5b000000,RW_NCNB); //SFR
MMU_SetMTT(0x5b100000,0xfff00000,0x5b100000,RW_FAULT);//not used
MMU_SetTTBase(_MMUTT_STARTADDRESS);
MMU_SetDomain(0x55555550|DOMAIN1_ATTR|DOMAIN0_ATTR);
//DOMAIN1: no_access, DOMAIN0,2~15=client(AP is checked)
MMU_SetProcessId(0x0);
MMU_EnableAlignFault();
MMU_EnableMMU();
MMU_EnableICache();
MMU_EnableDCache(); //DCache should be turned on after MMU is turned on.
} |
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