port.c

s3c2410/s3c2440的bootloader演示程序

#include "2410addr.h"


//***************************[ PORTS ]****************************************************
void Port_Init(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  = 0xaaa9aaaa;   // GPD8: USB_CHG_DIS: Output
    //rGPDUP   = 0xffff;       // The pull up function is disabled GPD[15:0]
    //rGPDDAT &= ~(0x1 << 8);  // Set USB_CHG_DIS Low

    //Ports  : GPD15        GPD14   GPD13   GPD12   GPD11   GPD10   GPD9    GPD8         
    //Signal : USB_PULLUP   NC      NC      NC      NC      nFWP    SELI    USB_CHG_DIS  
    //CON    : 00           00      00      00      00      01      01      01
    //DAT    : 0            0       0       0       0       1       0(100ma)0 (low)
    //UP     : 1            0       0       0       0       1       1       1

    //Ports  : GPD7         GPD6    GPD5    GPD4    GPD3    GPD2    GPD1    GPD0
    //Signal : NC           EL_EN   KEEPACT IR_SD   PWREN2  NC      TXON    NC
    //CON    : 00           01      01      01      01      00      01      00
    //DAT    : 0            0(on)   1(high) 1(on)   0(low)  0       0(low)  0
    //UP     : 0            1       1       1       1       0       1       0
    rGPDCON  = 0x00151544;
    rGPDDAT  = 0x0430;
    rGPDUP   = 0x877A;


    //*** 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     00      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]
    rGPECON = 0xaa2aaaaa;       
    rGPEUP  = 0xf7ff;       // GPE11 is NC


    //*** PORT F GROUP
    //Ports  : GPF7   GPF6   GPF5   GPF4      GPF3     GPF2  GPF1   GPF0
    //Signal : key4                
    //Setting: input   input input  input     input    input input  input
    //Binary :  00      00    00     00        00       00    00     00
    rGPFCON = 0x0000;
    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   NC       SDWP     WHEEL_SW WHEEL_A  WHEEL_B   ONE_WIRE
    //Setting: nYPON  YMON nXPON XMON   IN       EINT18   EINT17   ENT16    EINT15    OUTPUT
    //Binary :   11    11   11    11    00       01        10       10        10        01
    //UP     :   1     1    1     1     0        1         1        1         1         1

    //Ports  : GPG5       GPG4      GPG3    GPG2    GPG1     GPG0    
    //Signal : NC         LCD_PWREN NC      nSS_SPI JACK_CLK JACK_DATA
    //Setting: IN         LCD_PWRDN IN      nSS0    EINT9    EINT8
    //Binary : 00         11        00      11      10       10
    //UP     : 0          1         0       1       1        1
	
	
	// Behavior changed from board rev A to rev D. Don't power LCD down.


    //*** 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 :   01      01     10   11    11    10   10   10   10   10    10    
    rGPHCON = 0x16faaa;
    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]
}