spd read 当时编的.可能有点问题的..那个AMD的 SMBus 地址貌似可以固定下来.

最新推荐文章于 2024-09-11 11:08:01 发布

原创最新推荐文章于 2024-09-11 11:08:01 发布 · 3k 阅读

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#byte #io #delay #fun #access #each

本文介绍了一个用于读取SO-DIMM内存详细信息的程序，包括平台识别、内存类型、容量、速度、制造商等关键参数，并提供了完整的源代码实现。

http://en.wikipedia.org/wiki/Serial_presence_detect

SPD ==Serial presence detect

其中用到了 DDR2 ,DDR3 , JEDEC 106AA( Manufacture's JEDEC ID)

http://download.youkuaiyun.com/source/2374958

//by //COPY LEFT, EVERY LINE IS CHECK FOR LOGICAL RIGHT //IF FIND PROBLEMS IN THIS CODE ,PLEASE LET ME KNOW // // //2009-11-13 //V1.2 CHANGE AMD SMBus get method //v1.1.2 add "a-Data technology" //V1.1.1 ADD "Transcend" //V1.1 FORMAL RELEAS //SERIAL PRESENCE DETECTION OF SO-DIMM DDRII ADN DDRII /*****************************************************************/ #include <stdio.h> #include <conio.h> #include <dos.h> #define INTEL 0 #define NVIDIA 1 #define AMD 2 #define ATI 3 #define Unknow 0xFF #define DDRII 0 #define DDRIII 1 /*****************************************************************/ unsigned char Platform_flag; unsigned char Dimm_flag=0; unsigned int SMB_IO_PORT; struct{ unsigned char MType;//DDRII,DDRIII unsigned char SerNum[4]; unsigned char ProTime[2];//year since 2000,weeks unsigned char PartNum[19]; unsigned int size; char *manu; unsigned int speed; unsigned char address; }Dimm_Info[5]; unsigned char Dimm_slave[5]={0xA0,0xA2,0xA4,0xA6,0xA8}; /*****************************************************************/ unsigned long Get_Pci_Address(unsigned char bus,unsigned char dev,unsigned char fun,unsigned char reg); unsigned int Read_Pci_Word(unsigned long address); void Check_Platform(void); //8086 for intel;for nvidia void Get_SMB_IO_Port(void ); // unsigned char Read_SMB_Byte(unsigned char offset); void Check_DDR_Type(void); //DDRII;DDRIII void Check_DDR_Size(void); void Check_DDR_Speed(void); void Check_DDR_Manu(void); void GetSerialNumber(void); void GetProduceTime(void); void GetPartNumber(void); void ManuName(unsigned char); /*****************************************************************/ unsigned long Get_Pci_Address(unsigned char bus,unsigned char dev,unsigned char fun,unsigned char reg) { unsigned long address=0,temp=0; address=bus;address<<=16; dev<<=3; fun&=7; reg&=0xFC; temp=dev|fun;temp<<=8;temp|=reg; address=address|temp|0x80000000; return address; } /*****************************************************************/ unsigned int Read_Pci_Word(unsigned long address) { unsigned int result=0; __asm{ mov eax,address mov dx,0x0CF8 out dx,eax mov dx,0x0CFC in eax,dx mov result,ax } return result; } /*****************************************************************/ unsigned int Write_Pci_Word(unsigned long address,unsigned int data) { unsigned int result=0; __asm{ mov eax,address mov dx,0x0CF8 out dx,eax mov dx,0x0CFC mov ax, data out dx,ax } return result; } /**********************AMD SMBus base address************************************/ unsigned int Read_AMD_SMBB(void) { //IO access , once a byte, read twice __asm{ mov ax,0X2C //low byte mov dx,0x0CD6 out dx,ax mov dx,0x0CD7 in al,dx mov bl, al mov ax,0x2D mov dx, 0x0CD6 out dx, ax mov dx, 0x0CD7 in ah, dx mov al, bl } return _AX; } /*****************************************************************/ void Check_Platform() { unsigned long address=0x80000000; unsigned int VID= Read_Pci_Word(address); if(VID==0x8086) Platform_flag=INTEL; else if(VID==0x10DE) Platform_flag=NVIDIA; else if(VID==0x1022) Platform_flag=AMD;//2 else if( VID==0X1002) Platform_flag=ATI;//3 else { printf("PLATFORM VENDOR ID IS :%04X/n",VID); Platform_flag=Unknow; } } /****************************************************/ void Get_SMB_IO_Port() {//IO MAPPED ENABLED ,IF NOT THEN? if(Platform_flag==INTEL) SMB_IO_PORT=Read_Pci_Word(Get_Pci_Address(0,0x1F,3,0x20)) & 0xFFE0; else if(Platform_flag==NVIDIA) SMB_IO_PORT=Read_Pci_Word(Get_Pci_Address(0,3,2,0x24)) & 0xFFFE; else if(Platform_flag==AMD||Platform_flag==ATI) { //printf("%0.8X/n",Get_Pci_Address(0,0x14,0,90)); //SMB_IO_PORT=Read_Pci_Word(Get_Pci_Address(0,0x14,0,0x90))&0xFFF0;// //SMB_IO_PORT=Read_AMD_SMBB()&0xFFE0;//GET SMBus Base address through PM space. SMB_IO_PORT=0xB00; //printf("SMBus base addr. : %04X",SMB_IO_PORT); } } /*****************************************************************/ unsigned char Read_SMB_Byte(unsigned char offset) { unsigned int result=0; if(Platform_flag==INTEL||Platform_flag==AMD||Platform_flag==ATI) { outportb(SMB_IO_PORT+4,Dimm_Info[Dimm_flag].address|1); outportb(SMB_IO_PORT+3,offset); outportb(SMB_IO_PORT,0xFE); outportb(SMB_IO_PORT+2,0x48); delay(10); // while(!(inportb(SMB_IO_PORT)&0x02)) // {} result=inportb(SMB_IO_PORT+5); } else if(Platform_flag==NVIDIA) { delay(10); outportb(SMB_IO_PORT+2,Dimm_Info[Dimm_flag].address); outportb(SMB_IO_PORT+3,offset); outportb(SMB_IO_PORT+1,0x80); outportb(SMB_IO_PORT,0x07);//CHECK THAT DATA IS RETURNED delay(3); // while(!(inportb(SMB_IO_PORT)&0x02)) // {} result=inportb(SMB_IO_PORT+4); } /* else if(Platform_flag==AMD) { outportb(SMB_IO_PORT+4,Dimm_Info[Dimm_flag].address|1); outportb(SMB_IO_PORT+3,offset); outportb(SMB_IO_PORT,0xFE); outportb(SMB_IO_PORT+2,0x48); delay(10); // while(!inportb(SMB_IO_PORT)&0x80) {} result=inportb(SMB_IO_PORT+5); } */ return result; } /*****************************************************************/ void Check_DDR_Type() { unsigned char offset=0,type=0; offset=0x02; Read_SMB_Byte(offset); type=Read_SMB_Byte(offset); if(type==0x08) Dimm_Info[Dimm_flag].MType=DDRII; else if(type==0x0B) Dimm_Info[Dimm_flag].MType=DDRIII; else Dimm_Info[Dimm_flag].MType=Unknow; } /*****************************************************************/ void Check_DDR_Size() { unsigned char offset_rank,offset_density,offset_0x08; unsigned char density,capacity,Width,BWidth,rank; int value; if(Dimm_Info[Dimm_flag].MType==DDRII) { offset_rank=0x05; //rank rank=(Read_SMB_Byte(offset_rank)&0xF); rank++; offset_density=0x1F; density=Read_SMB_Byte(offset_density);//density is the size of each Rank(bitmap) if(density==0x20) value=128; else if(density==0x40) value=256; else if(density==0x80) value=512; else if(density==0x01) value=1024; else if(density==0x02) value=2048; else if(density==0x04) value=4096; else value=0; Dimm_Info[Dimm_flag].size=rank * value; } if(Dimm_Info[Dimm_flag].MType==DDRIII) { offset_density=0x04;//Capacity capacity=Read_SMB_Byte(offset_density); //Capacity is the total capacity of SDRAM //bank=density; capacity&=0x0F;//b[0:3] at 0x04 if(capacity==1) value=512; else if(capacity==2) value=1024; else if(capacity==3) value=2048; else if(capacity==4) value=4096; else if(capacity==5) value=8192; else if(capacity==6) value=16384; else value=256; //printf("Value: %d/n",value);//TEST PURPOSE offset_rank=0x07;//Rank rank=Read_SMB_Byte(offset_rank); Width=rank; Width&=0x07;//b[0:2] at 0x07 rank&=0x38;//00111000 , b[3:5] at 0x07 rank=rank>>3; rank++; /*if(rank==0) rank=1; else if(rank==0x08) rank=2; else if(rank==0x10) rank=3; else if(rank==0x18) rank=4; */ switch(Width) { case 0:Width=4; break; case 1:Width=8; break; case 2:Width=16; break; case 3:Width=32; break; } offset_0x08=0x08; BWidth=Read_SMB_Byte(offset_0x08); BWidth&=0x07;//b[0:2] at 0x08 switch(BWidth) { case 0:BWidth=8; break; case 1:BWidth=16; break; case 2:BWidth=32; break; case 3:BWidth=64; break; } //printf("Rank: 0x%02X/nBWidth: 0x%02X/nWidth: 0x%02X/n",rank,BWidth,Width);//TEST Dimm_Info[Dimm_flag].size=(value/8)*BWidth/Width*rank; } } /*****************************************************************/ void Check_DDR_Speed() { unsigned char cycle=0,offset=0; if(Dimm_Info[Dimm_flag].MType==DDRII) { offset=0x09; cycle=Read_SMB_Byte(offset); if(cycle==0x50) Dimm_Info[Dimm_flag].speed=400; else if(cycle==0x3D) Dimm_Info[Dimm_flag].speed=533; else if(cycle==0x30) Dimm_Info[Dimm_flag].speed=667; else if(cycle==0x25) Dimm_Info[Dimm_flag].speed=800; } else if(Dimm_Info[Dimm_flag].MType==DDRIII) { offset=0x0C; cycle=Read_SMB_Byte(offset); if(cycle==0x14) Dimm_Info[Dimm_flag].speed=800; else if(cycle==0x0F) Dimm_Info[Dimm_flag].speed=1066; else if(cycle==0x0C) Dimm_Info[Dimm_flag].speed=1333; else if(cycle==0x0A) Dimm_Info[Dimm_flag].speed=1600; } } /*****************************************************************/ void Check_DDR_Manu() { unsigned char offset=0,manu=0; if(Dimm_Info[Dimm_flag].MType==DDRII) { offset=0x40; if((manu=Read_SMB_Byte(offset))==0x7F) {//bank one offset++; if((manu=Read_SMB_Byte(offset))==0x7F) {//banktwo offset++; if((manu=Read_SMB_Byte(offset))==0x7F) {//bankthree offset++; if((manu=Read_SMB_Byte(offset))==0x7F) {//bankfour offset++; manu=Read_SMB_Byte(offset); } } } } } if(Dimm_Info[Dimm_flag].MType==DDRIII) { offset=0x76; manu=Read_SMB_Byte(offset); } ManuName(manu); } /*****************************************************************/ void ManuName(unsigned char manu) { //////////////////ID AND NAME //////////////////// if(manu==0xAD) Dimm_Info[Dimm_flag].manu="Hynix"; else if(manu==0xCE) Dimm_Info[Dimm_flag].manu="SamSung"; else if(manu==0x0B) Dimm_Info[Dimm_flag].manu="Nanya"; else if(manu==0xFE) Dimm_Info[Dimm_flag].manu="Elpida"; else if(manu==0x2C) Dimm_Info[Dimm_flag].manu="Micron"; else if(manu==0x98) Dimm_Info[Dimm_flag].manu="Kingston"; else if(manu==0x25) Dimm_Info[Dimm_flag].manu="Kingmax"; else if(manu==0x4f) Dimm_Info[Dimm_flag].manu="Transcend"; else if(manu==0xCB) Dimm_Info[Dimm_flag].manu="A-DATA Technology"; else { Dimm_Info[Dimm_flag].manu="Unknow"; printf("The Unknow Memory Vendor ID is %02X/n",manu); } } void GetSerialNumber() { unsigned char offset=0x5F,i; Read_SMB_Byte(offset); if(Dimm_Info[Dimm_flag].MType==DDRIII) { offset=0x7A; } for(i=0;i<4;i++) { Dimm_Info[Dimm_flag].SerNum[i]=Read_SMB_Byte(offset); delay(10); offset++; } } void GetProduceTime() { unsigned char offset=0x5D,i; if(Dimm_Info[Dimm_flag].MType==DDRIII) { offset=0x78; } for(i=0;i<2;i++) { Dimm_Info[Dimm_flag].ProTime[i]=Read_SMB_Byte(offset); delay(10); offset++; } } void GetPartNumber() { unsigned char offset=0x49,i; if(Dimm_Info[Dimm_flag].MType==DDRIII) { offset=0x80; } for(i=0;i<18;i++) { Dimm_Info[Dimm_flag].PartNum[i]=Read_SMB_Byte(offset); delay(10); offset++; } Dimm_Info[Dimm_flag].PartNum[i]='/0'; } /*****************************************************************/ int main() { unsigned char i; unsigned int total_memory=0; printf("********************************************************************/n"); printf("* READ SO-DIMM MEMORY INFORMATION v1.2 */n"); printf("* BY Claude Shi */n"); printf("********************************************************************/n"); printf(" Memory Information/n"); Check_Platform(); if(Platform_flag==INTEL) printf("PlatForm : INTEL "); else if(Platform_flag==NVIDIA) printf("PlatForm : NVIDIA "); else if(Platform_flag==AMD) printf("Platform : AMD "); else if(Platform_flag==ATI) printf("Platform : ATI "); else if(Platform_flag==Unknow) printf("PlatForm : Unknow/n"); Get_SMB_IO_Port(); printf("IO Address: 0x%0.4X/n",SMB_IO_PORT); /*************************************************************/ for(Dimm_flag=0;Dimm_flag<5;Dimm_flag++) { Dimm_Info[Dimm_flag].address=Dimm_slave[Dimm_flag]; Check_DDR_Type(); //DDRII OR DDRIII if(Dimm_Info[Dimm_flag].MType==Unknow) continue; Check_DDR_Size();//memeory size Check_DDR_Speed();//frequence Check_DDR_Manu(); GetPartNumber(); GetSerialNumber(); GetProduceTime(); } // getch(); printf("********************************************************************/n"); /************************************************/ for(Dimm_flag=0;Dimm_flag<5;Dimm_flag++) { if(Dimm_Info[Dimm_flag].size!=0) { printf("DIMM [0x%0.2X]: ",Dimm_slave[Dimm_flag]); if(Dimm_Info[Dimm_flag].MType==DDRII) printf("DDRII-"); else if(Dimm_Info[Dimm_flag].MType==DDRIII) printf("DDRIII-"); printf("%-7s %dMhz %dM/n",Dimm_Info[Dimm_flag].manu,Dimm_Info[Dimm_flag].speed,Dimm_Info[Dimm_flag].size); total_memory+=Dimm_Info[Dimm_flag].size; /******Serial Number**********/ printf("Serial Number is: "); for(i=0;i<4;i++) { printf("%02X",Dimm_Info[Dimm_flag].SerNum[i]); } printf("/n"); /************** Produce Time *****************/ printf("Produce Time is: "); printf("Year: 20%02x, Week: %x/n", Dimm_Info[Dimm_flag].ProTime[0],Dimm_Info[Dimm_flag].ProTime[1]); /*************** Part Number *****************************/ printf("Part Number is: "); printf("%s/n",Dimm_Info[Dimm_flag].PartNum); printf("********************************************************************/n"); }//if } printf("Total Size: %dM",total_memory); return 0; }

欢迎提意见.....为了默默无问的BIOS ,全新的EFI架构,努力吧...