24402410LCD显示屏驱动程序u-boot早就支持framebuffer了，不光显示图片，还可以把控制台重定向到lcd上，只是24x0部分缺代码罢了，需要填充一个结构体，可以从openmoko那里copy过来。
不过如果只是为了显示一张图片的话……初始化lcd控制器的代码随便放哪里运行都可以的吧!2440&2410 LCD显示屏驱动程序#include "config.h"// GPB1/TOUT1 for Backlight control(PWM)#define GPB1_TO_OUT() (rGPBUP &= 0xfffd, rGPBCON &= 0xfffffff3, rGPBCON |= 0x00000004)#define GPB1_TO_1() (rGPBDAT |= 0x0002)#define GPB1_TO_0() (rGPBDAT &= 0xfffd)//extern void Uart_Printf(char *f, ...) ;extern unsigned char __CHS[];extern unsigned char __VGA[];//volatile staticunsigned short LCD_BUFFER[SCR_YSIZE_TFT][SCR_XSIZE_TFT];static void Lcd_PowerEnable(int invpwren,int pwren);static void Lcd_Init(void){rGPCUP = 0x00000000;rGPCCON = 0xaaaa02a9;// rGPDUP=0xffffffff; // Disable Pull-up registerrGPDUP = 0x00000000;rGPDCON=0xaaaaaaaa; //Initialize VD[15:8]rLCDCON1=(CLKVAL_TFT << 8)|(MVAL_USED << 7)|(3 <<5 )|(12 << 1)|0;// TFT LCD panel,16bpp TFT,ENVID=offrLCDCON2=(VBPD << 24)|(LINEVAL_TFT << 14)|(VFPD << 6)|(VSPW); rLCDCON3=(HBPD << 19)|(HOZVAL_TFT << 8)|(HFPD);rLCDCON4=(MVAL << 8)|(HSPW);#if(LCD_TYPE == PT035)rLCDCON5 = (1 << 11) | (1 << 10) | (0 << 9) | (0 << 8) | (1 << 7) | (1 << 6)| (1 << 3) |(BSWP << 1) | (HWSWP);#elif(LCD_TYPE == WD_F3224)rLCDCON5 = (1 << 11) | (1 << 10) | (0 << 9) | (0 << 8) | (0 << 7) | (0 << 6)| (1 << 3) |(0 << 1) | (HWSWP);#elif(LCD_TYPE == TX11D)rLCDCON5 = (1 << 11) | (0 << 10) | (0 << 9) | (0 << 8) | (0 << 7) | (0<< 6)| (1 << 3) | (1 << 2) | (BSWP << 1) | (HWSWP);#endifrLCDSADDR1=(((U32)LCD_BUFFER>>22)<<21)|M5D((U32)L CD_BUFFER>>1);rLCDSADDR2=M5D( ((U32)LCD_BUFFER+(SCR_XSIZE_TFT * LCD_YSIZE_TFT * 2)) >> 1 );rLCDSADDR3=(((SCR_XSIZE_TFT - LCD_XSIZE_TFT) / 1) << 11)|(LCD_XSIZE_TFT / 1);rLCDINTMSK|=(3); // MASK LCD Sub InterruptrTCONSEL &= (~7) ; // Disable LPC3480rTPAL=0; // Disable Temp Palette}static void Lcd_EnvidOnOff(int onoff){if(onoff == 1)rLCDCON1 |= 1; // ENVID=ONelserLCDCON1 = rLCDCON1 & 0x3fffe; // ENVID Off}static void Lcd_PowerEnable(int invpwren,int pwren){//GPG4 is setted as LCD_PWRENrGPGUP = rGPGUP & ( ~(1 << 4)) |(1 << 4); // Pull-up disable rGPGCON = rGPGCON & ( ~(3 << 8)) |(3 << 8); //GPG4=LCD_PWREN rGPGDAT = rGPGDAT | (1 << 4) ;// invpwren=pwren;//Enable LCD POWER ENABLE FunctionrLCDCON5 = rLCDCON5 & ( ~(1 << 3)) |(pwren << 3); // PWRENrLCDCON5 = rLCDCON5 & ( ~(1 << 5)) |(invpwren << 5); // INVPWREN}static void Lcd_MoveViewPort(int vx, int vy){U32 addr;SET_IF();#if (LCD_XSIZE_TFT < 32)while((rLCDCON1 >> 18) <= 1); // if x<32#elsewhile((rLCDCON1 >> 18) == 0); // if x>32#endifaddr = (U32)LCD_BUFFER + (vx * 2) + vy * (SCR_XSIZE_TFT * 2);rLCDSADDR1 = ( (addr >> 22) << 21 ) | M5D(addr >> 1);rLCDSADDR2 = M5D(((addr + (SCR_XSIZE_TFT * LCD_YSIZE_TFT * 2)) >> 1)); CLR_IF();}static void MoveViewPort(void){int vx=0,vy=0,vd=1;Uart_Printf("\n*Move the LCD view windos:\n");Uart_Printf(" press 8 is up\n");Uart_Printf(" press 2 is down\n");Uart_Printf(" press 4 is left\n");Uart_Printf(" press 6 is right\n");Uart_Printf(" press Enter to exit!\n");while(1){switch( Uart_GetKey() ){case '8':if(vy>=vd)vy-=vd;Uart_Printf("vx==,vy==\n",vx,vy);Lcd_MoveViewPort(vx,vy);break;case '4':if(vx>=vd)vx-=vd;Uart_Printf("vx==,vy==\n",vx,vy);Lcd_MoveViewPort(vx,vy);break;case '6':if(vx<=(SCR_XSIZE_TFT - LCD_XSIZE_TFT -vd))vx += vd;Uart_Printf("vx==,vy==\n",vx,vy);Lcd_MoveViewPort(vx,vy);break;case '2':if(vy<=(SCR_YSIZE_TFT - LCD_YSIZE_TFT -vd))vy += vd;Uart_Printf("vx==,vy==\n",vx,vy);Lcd_MoveViewPort(vx,vy);break;case '\r':return;default:break;}//Uart_Printf("vx==,vy==\n",vx,vy);//Lcd_MoveViewPort(vx,vy);}}void PutPixel(U32 x,U32 y, U16 c ){if ( (x < SCR_XSIZE_TFT) && (y < SCR_YSIZE_TFT) ) LCD_BUFFER[(y)][(x)] = c;}void GUI_Point(U32 x,U32 y, U16 c ){if ( (x < SCR_XSIZE_TFT) && (y < SCR_YSIZE_TFT) ) LCD_BUFFER[(y)][(x)] = c;}void Lcd_ClearScr( U16 c){unsigned int x,y ;for( y = 0 ; y < SCR_YSIZE_TFT ; y++ ){for( x = 0 ; x < SCR_XSIZE_TFT ; x++ ){LCD_BUFFER[y][x] = c ;}}}void Glib_Line(int x1,int y1,int x2,int y2,int color) { int dx,dy,e;dx = x2 -x1;dy = y2 -y1;if(dx >= 0){if(dy >= 0) // dy>=0{if(dx>=dy) // 1/8 octant{e=dy-dx/2;while(x1<=x2){PutPixel(x1,y1,color); if(e>0){y1+=1;e-=dx;} x1+=1; e+=dy;}}else // 2/8 octant{e=dx-dy/2;while(y1<=y2){PutPixel(x1,y1,color); if(e>0){x1+=1;e-=dy;} y1+=1; e+=dx;}}}else // dy<0{dy=-dy; // dy=abs(dy)if(dx>=dy) // 8/8 octant {e=dy-dx/2;while(x1<=x2){PutPixel(x1,y1,color); if(e>0){y1-=1;e-=dx;} x1+=1; e+=dy;}}else // 7/8 octant{e=dx-dy/2;while(y1>=y2){PutPixel(x1,y1,color); if(e>0){x1+=1;e-=dy;} y1-=1; e+=dx;}}}else //dx<0{dx=-dx; //dx=abs(dx)if(dy >= 0) // dy>=0 {if(dx>=dy) // 4/8 octant {e=dy-dx/2;while(x1>=x2){PutPixel(x1,y1,color); if(e>0){y1+=1;e-=dx;} x1-=1; e+=dy;}}else // 3/8 octant{e=dx-dy/2;while(y1<=y2){PutPixel(x1,y1,color); if(e>0){x1-=1;e-=dy;} y1+=1; e+=dx;}}}else // dy<0{dy=-dy; // dy=abs(dy)if(dx>=dy) // 5/8 octant {e=dy-dx/2;while(x1>=x2){PutPixel(x1,y1,color); if(e>0){y1-=1;e-=dx;} x1-=1; e+=dy;}}else // 6/8 octante=dx-dy/2;while(y1>=y2){PutPixel(x1,y1,color);if(e>0){x1-=1;e-=dy;}y1-=1;e+=dx;}}}}}void Glib_Rectangle(int x1,int y1,int x2,int y2,int color){Glib_Line(x1,y1,x2,y1,color);Glib_Line(x2,y1,x2,y2,color);Glib_Line(x1,y2,x2,y2,color);Glib_Line(x1,y1,x1,y2,color);}void Glib_FilledRectangle(int x1,int y1,int x2,int y2,int color) { int i;for(i=y1;i<=y2;i++)Glib_Line(x1,i,x2,i,color);}void Paint_Bmp(int x0,int y0,int h,int l,unsigned char bmp[]) { int x,y;U32 c;int p = 0;for( y = y0 ; y < l ; y++ ){for( x = x0 ; x < h ; x++ ){c = bmp[p+1] | (bmp[p]<<8) ;if ( ( (x0+x) < SCR_XSIZE_TFT) && ( (y0+y) < SCR_YSIZE_TFT) ) LCD_BUFFER[y0+y][x0+x] = c ;p = p + 2 ;}}#if 1void Lcd_PutASCII(unsigned int x,unsigned int y,unsigned char ch,unsigned int c,unsigned int bk_c,unsigned int st) {unsigned short int i,j;unsigned char *pZK,mask,buf;pZK = &__VGA[ch*16];for( i = 0 ; i < 16 ; i++ ){mask = 0x80;buf = pZK[i];for( j = 0 ; j < 8 ; j++ ){if( buf & mask ){PutPixel(x+j,y+i,c);}else{if( !st ){PutPixel(x+j,y+i,bk_c);}}mask = mask >> 1;}}}void Lcd_PutHZ(unsigned int x,unsigned int y,unsigned short int QW,unsigned int c,unsigned int bk_c,unsigned int st) {unsigned short int i,j;unsigned char *pZK,mask,buf;pZK = &__CHS[ ( ( (QW >> 8) - 1 )*94 + (QW & 0x00FF)- 1 )*32 ]; for( i = 0 ; i < 16 ; i++ ){//左mask = 0x80;buf = pZK[i*2];for( j = 0 ; j < 8 ; j++ ){if( buf & mask ){PutPixel(x+j,y+i,c);}else{if( !st ){PutPixel(x+j,y+i,bk_c);}}mask = mask >> 1;}//右mask = 0x80;buf = pZK[i*2 + 1];for( j = 0 ; j < 8 ; j++ ){if( buf & mask ){PutPixel(x+j + 8,y+i,c);}else{if( !st ){PutPixel(x+j + 8,y+i,bk_c);}}mask = mask >> 1;}}}//----------------------void Lcd_printf(unsigned int x,unsigned int y,unsigned int c,unsigned int bk_c,unsigned int st,char *fmt,...){char __LCD_Printf_Buf[256];va_list ap;unsigned char *pStr = (unsigned char *)__LCD_Printf_Buf;unsigned int i = 0;va_start(ap,fmt);vsprintf(__LCD_Printf_Buf,fmt,ap);va_end(ap);while(*pStr != 0 ){switch(*pStr){case '\n' :{break;}default:{if( *pStr > 0xA0 & *(pStr+1) > 0xA0 ) //中文输出{Lcd_PutHZ( x , y , (*pStr - 0xA0)*0x0100 + *(pStr+1) - 0xA0 , c , bk_c , st);pStr++;i++;x += 16;}else //英文输出{Lcd_PutASCII( x , y , *pStr , c , bk_c , st );x += 8;}break;}}pStr++;i++;if( i > 256 ) break;}}#endifvoid Lcd_Display(void){Lcd_Init();Lcd_PowerEnable(0, 1);Lcd_EnvidOnOff(1);Lcd_ClearScr( (0x00<<11) | (0x00<<5) | (0x00) ); #if((LCD_TYPE == PT035)||(LCD_TYPE == WD_F3224)) Paint_Bmp(0, 0, 320, 240, phone);#elif(LCD_TYPE == TX11D)Paint_Bmp(0, 0, 480, 272, LCD43_ucos);#endif}。
