📄 mmu.c
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/************************************************
NAME : MMU.C
DESC :
Revision: 2002.2.28 ver 0.0
************************************************/
#include "def.h"
#include "option.h"
#include "2410addr.h"
#include "2410lib.h"
#include "2410slib.h"
#include "mmu.h"
void MMU_Init(void)
{
int i,j;
MMU_DisableDCache();
MMU_DisableICache();
for(i=0;i<64;i++)
for(j=0;j<8;j++)
MMU_CleanInvalidateDCacheIndex((i<<26)|(j<<5));
MMU_InvalidateICache();
#if 0
MMU_EnableICache();
#endif
MMU_DisableMMU();
MMU_InvalidateTLB();
MMU_SetMTT(0x00000000,0x00100000,0x30000000,RW_CNB);
MMU_SetMTT(0x00200000,0x0ff00000,0x00200000,RW_CNB);
MMU_SetMTT(0x10000000,0x17f00000,0x10000000,RW_NCNB);
MMU_SetMTT(0x18000000,0x1ff00000,0x18000000,RW_NCNB);
MMU_SetMTT(0x20000000,0x27f00000,0x20000000,RW_NCNB);
MMU_SetMTT(0x28000000,0x2ff00000,0x28000000,RW_NCNB);
MMU_SetMTT(0x30000000,0x30f00000,0x30000000,RW_CB);
MMU_SetMTT(0x31000000,0x33e00000,0x31000000,RW_NCNB);
MMU_SetMTT(0x33f00000,0x33f00000,0x33f00000,RW_CB);
MMU_SetMTT(0x38000000,0x3ff00000,0x38000000,RW_NCNB);
MMU_SetMTT(0x40000000,0x47f00000,0x40000000,RW_NCNB);
MMU_SetMTT(0x48000000,0x5af00000,0x48000000,RW_NCNB);
MMU_SetMTT(0x5b000000,0xfff00000,0x5b000000,RW_FAULT);
MMU_SetTTBase(_MMUTT_STARTADDRESS);
MMU_SetDomain(0x55555550|DOMAIN1_ATTR|DOMAIN0_ATTR);
MMU_SetProcessId(0x0);
MMU_EnableAlignFault();
MMU_EnableMMU();
#ifdef S3C2410_MMU_SUPPORT
#if MMU_CACHE == 1
MMU_EnableICache();
MMU_EnableDCache();
#endif
#endif
}
void ChangeRomCacheStatus(int attr)
{
int i,j;
MMU_DisableDCache();
MMU_DisableICache();
for(i=0;i<64;i++)
for(j=0;j<8;j++)
MMU_CleanInvalidateDCacheIndex((i<<26)|(j<<5));
MMU_InvalidateICache();
MMU_DisableMMU();
MMU_InvalidateTLB();
MMU_SetMTT(0x00000000,0x07f00000,0x00000000,attr);
MMU_SetMTT(0x08000000,0x0ff00000,0x08000000,attr);
MMU_EnableMMU();
/*
MMU_EnableICache();
MMU_EnableDCache();
*/
}
void MMU_SetMTT(int vaddrStart,int vaddrEnd,int paddrStart,int attr)
{
U32 *pTT;
int i,nSec;
pTT=(U32 *)_MMUTT_STARTADDRESS+(vaddrStart>>20);
nSec=(vaddrEnd>>20)-(vaddrStart>>20);
for(i=0;i<=nSec;i++)*pTT++=attr |(((paddrStart>>20)+i)<<20);
}
void MMU_Disable(void)
{
int i,j;
MMU_DisableDCache();
MMU_DisableICache();
for(i=0;i<64;i++)
{
for(j=0;j<8;j++)
{
MMU_CleanInvalidateDCacheIndex((i<<26)|(j<<5));
}
}
MMU_InvalidateICache();
MMU_DisableMMU();
MMU_InvalidateTLB();
}
/*
*********************************************************************************************
* __vPortInit
*
* Description: This routine sets the default GPIO condition.
*
* Arguments : none.
*
* Return : none.
*
* Note(s) :
*********************************************************************************************
*/
void PortInit(void)
{
/*
//CAUTION:Follow the configuration order for setting the ports.
// 1) setting value(GPnDAT)
// 2) setting control register (GPnCON)
// 3) configure pull-up resistor(GPnUP)
*/
/*
//32bit data bus configuration
//PORT A GROUP
//Ports : GPA22 GPA21 GPA20 GPA19 GPA18 GPA17 GPA16 GPA15 GPA14 GPA13 GPA12
//Signal : nFCE nRSTOUT nFRE nFWE ALE CLE nGCS5 nGCS4 nGCS3 nGCS2 nGCS1
//Binary : 1 1 1 , 1 1 1 1 , 1 1 1 1
//Ports : GPA11 GPA10 GPA9 GPA8 GPA7 GPA6 GPA5 GPA4 GPA3 GPA2 GPA1 GPA0
//Signal : ADDR26 ADDR25 ADDR24 ADDR23 ADDR22 ADDR21 ADDR20 ADDR19 ADDR18 ADDR17 ADDR16 ADDR0
//Binary : 1 1 1 1 , 1 1 1 1 , 1 1 1 1
*/
rGPACON = 0x7fffff;
/*
//PORT B GROUP
//Ports : GPB10 GPB9 GPB8 GPB7 GPB6 GPB5 GPB4 GPB3 GPB2 GPB1 GPB0
//Signal : nXDREQ0 nXDACK0 nXDREQ1 nXDACK1 nSS_KBD nDIS_OFF L3CLOCK L3DATA L3MODE nIrDATXDEN Keyboard
//Setting: INPUT OUTPUT INPUT OUTPUT INPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT
//Binary : 00 , 01 00 , 01 00 , 01 01 , 01 01 , 01 01
*/
rGPBCON = 0x044555;
rGPBUP = 0x7ff; /* The pull up function is disabled GPB[10:0] */
/*
//PORT C GROUP
//Ports : GPC15 GPC14 GPC13 GPC12 GPC11 GPC10 GPC9 GPC8 GPC7 GPC6 GPC5 GPC4 GPC3 GPC2 GPC1 GPC0
//Signal : VD7 VD6 VD5 VD4 VD3 VD2 VD1 VD0 LCDVF2 LCDVF1 LCDVF0 VM VFRAME VLINE VCLK LEND
//Binary : 10 10 , 10 10 , 10 10 , 10 10 , 10 10 , 10 10 , 10 10 , 10 10
*/
rGPCCON = 0xaaaaaaaa;
rGPCUP = 0xffff; /* The pull up function is disabled GPC[15:0] */
/*
//PORT D GROUP
//Ports : GPD15 GPD14 GPD13 GPD12 GPD11 GPD10 GPD9 GPD8 GPD7 GPD6 GPD5 GPD4 GPD3 GPD2 GPD1 GPD0
//Signal : VD23 VD22 VD21 VD20 VD19 VD18 VD17 VD16 VD15 VD14 VD13 VD12 VD11 VD10 VD9 VD8
//Binary : 10 10 , 10 10 , 10 10 , 10 10 , 10 10 , 10 10 , 10 10 ,10 10
*/
rGPDCON = 0xaaaaaaaa;
rGPDUP = 0xffff; /* The pull up function is disabled GPD[15:0] */
/*
//PORT E GROUP
//Ports : GPE15 GPE14 GPE13 GPE12 GPE11 GPE10 GPE9 GPE8 GPE7 GPE6 GPE5 GPE4
//Signal : IICSDA IICSCL SPICLK SPIMOSI SPIMISO SDDATA3 SDDATA2 SDDATA1 SDDATA0 SDCMD SDCLK I2SSDO
//Binary : 10 10 , 10 10 , 10 10 , 10 10 , 10 10 , 10 10 ,
//-------------------------------------------------------------------------------------------------------
//Ports : GPE3 GPE2 GPE1 GPE0
//Signal : I2SSDI CDCLK I2SSCLK I2SLRCK
//Binary : 10 10 , 10 10
*/
rGPECON = 0xaaaaaaaa;
rGPEUP = 0xffff; /* The pull up function is disabled GPE[15:0] */
/*
//PORT F GROUP
//Ports : GPF7 GPF6 GPF5 GPF4 GPF3 GPF2 GPF1 GPF0
//Signal : nLED_8 nLED_4 nLED_2 nLED_1 nIRQ_PCMCIA EINT2 KBDINT EINT0
//Setting: Output Output Output Output EINT3 EINT2 EINT1 EINT0
//Binary : 01 01 , 01 01 , 10 10 , 10 10
*/
rGPFCON = 0x55aa;
rGPFUP = 0xff; /* The pull up function is disabled GPF[7:0] */
/*
//PORT G GROUP
//Ports : GPG15 GPG14 GPG13 GPG12 GPG11 GPG10 GPG9 GPG8 GPG7 GPG6
//Signal : nYPON YMON nXPON XMON EINT19 DMAMODE1 DMAMODE0 DMASTART KBDSPICLK KBDSPIMOSI
//Setting: nYPON YMON nXPON XMON EINT19 Output Output Output SPICLK1 SPIMOSI1
//Binary : 11 11 , 11 11 , 10 01 , 01 01 , 11 11
//-----------------------------------------------------------------------------------------
//Ports : GPG5 GPG4 GPG3 GPG2 GPG1 GPG0
//Signal : KBDSPIMISO LCD_PWREN EINT11 nSS_SPI IRQ_LAN IRQ_PCMCIA
//Setting: SPIMISO1 LCD_PWRDN EINT11 nSS0 EINT9 EINT8
//Binary : 11 11 , 10 11 , 10 10
*/
/* rGPGCON = 0xff95ffba; */
rGPGCON = 0xff95ff9a; /* nSS0 act as output pin */
rGPGUP = 0xffff; /* The pull up function is disabled GPG[15:0] */
/*
//PORT H GROUP
//Ports : GPH10 GPH9 GPH8 GPH7 GPH6 GPH5 GPH4 GPH3 GPH2 GPH1 GPH0
//Signal : CLKOUT1 CLKOUT0 UCLK nCTS1 nRTS1 RXD1 TXD1 RXD0 TXD0 nRTS0 nCTS0
//Binary : 10 , 10 10 , 11 11 , 10 10 , 10 10 , 10 10
*/
rGPHCON = 0x2afaaa;
rGPHUP = 0x7ff; /* The pull up function is disabled GPH[10:0] */
/*
//External interrupt will be falling edge triggered.
*/
rEXTINT0 = 0x22222222; /* EINT[7:0] */
rEXTINT1 = 0x22222222; /* EINT[15:8] */
rEXTINT2 = 0x22222222; /* EINT[23:16] */
}
/*
*********************************************************************************************
* __vChangeMPllValue
*
* Description: This routine sets the MPLL value.
*
* Arguments : none.
*
* Return : none.
*
* Note(s) :
*********************************************************************************************
*/
void ChangeMPllValue(int wMdiv, int wPdiv, int wSdiv)
{
rMPLLCON = (wMdiv<<12) | (wPdiv<<4) | wSdiv;
}
/*
*********************************************************************************************
* __vChangeClockDivider
*
* Description: This routine sets the HCLK and PCLK.
*
* Arguments : none.
*
* Return : none.
*
* Note(s) :
*********************************************************************************************
*/
void ChangeClockDivider(int wHdivn, int wPdivn)
{
/*
// wHdivn,wPdivn FCLK:HCLK:PCLK
// 0,0 1:1:1
// 0,1 1:1:2
// 1,0 1:2:2
// 1,1 1:2:4
*/
rCLKDIVN = (wHdivn<<1) | wPdivn;
if(wHdivn)
MMU_SetAsyncBusMode();
else
MMU_SetFastBusMode();
}
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