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authorFrancois Pons <fpons@mandriva.com>2003-02-25 10:32:05 +0000
committerFrancois Pons <fpons@mandriva.com>2003-02-25 10:32:05 +0000
commit851e3fd1c0cc0b586ef0d72cab3db560097adc20 (patch)
treefffe0bf23a1a2ec51fa58179c38c462bfb9621e6 /tools/dmidecode/dmidecode.c
parentb2fc3e0b481bb6f9fc9a7aa4d186238e78211598 (diff)
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added dmidecode
Diffstat (limited to 'tools/dmidecode/dmidecode.c')
-rw-r--r--tools/dmidecode/dmidecode.c856
1 files changed, 856 insertions, 0 deletions
diff --git a/tools/dmidecode/dmidecode.c b/tools/dmidecode/dmidecode.c
new file mode 100644
index 000000000..576fd4fc1
--- /dev/null
+++ b/tools/dmidecode/dmidecode.c
@@ -0,0 +1,856 @@
+/*
+ * DMI decode rev 1.2
+ *
+ * (C) 2000,2001 Alan Cox <alan@redhat.com>
+ *
+ * 2-July-2001 Matt Domsch <Matt_Domsch@dell.com>
+ * Additional structures displayed per SMBIOS 2.3.1 spec
+ *
+ * Licensed under the GNU Public license. If you want to use it in with
+ * another license just ask.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdlib.h>
+
+typedef unsigned char u8;
+typedef unsigned short u16;
+typedef unsigned int u32;
+
+static void
+dump_raw_data(void *data, unsigned int length)
+{
+ unsigned char buffer1[80], buffer2[80], *b1, *b2, c;
+ unsigned char *p = data;
+ unsigned long column=0;
+ unsigned int length_printed = 0;
+ const unsigned char maxcolumn = 16;
+ while (length_printed < length) {
+ b1 = buffer1;
+ b2 = buffer2;
+ for (column = 0;
+ column < maxcolumn && length_printed < length;
+ column ++) {
+ b1 += sprintf(b1, "%02x ",(unsigned int) *p);
+ if (*p < 32 || *p > 126) c = '.';
+ else c = *p;
+ b2 += sprintf(b2, "%c", c);
+ p++;
+ length_printed++;
+ }
+ /* pad out the line */
+ for (; column < maxcolumn; column++)
+ {
+ b1 += sprintf(b1, " ");
+ b2 += sprintf(b2, " ");
+ }
+
+ printf("%s\t%s\n", buffer1, buffer2);
+ }
+}
+
+
+
+struct dmi_header
+{
+ u8 type;
+ u8 length;
+ u16 handle;
+};
+
+static char *dmi_string(struct dmi_header *dm, u8 s)
+{
+ u8 *bp=(u8 *)dm;
+ if (!s) return "";
+
+ bp+=dm->length;
+ while(s>1)
+ {
+ bp+=strlen(bp);
+ bp++;
+ s--;
+ }
+ return bp;
+}
+
+static void dmi_decode_ram(u16 data)
+{
+ if(data&(1<<0))
+ printf("OTHER ");
+ if(data&(1<<1))
+ printf("UNKNOWN ");
+ if(data&(1<<2))
+ printf("STANDARD ");
+ if(data&(1<<3))
+ printf("FPM ");
+ if(data&(1<<4))
+ printf("EDO ");
+ if(data&(1<<5))
+ printf("PARITY ");
+ if(data&(1<<6))
+ printf("ECC ");
+ if(data&(1<<7))
+ printf("SIMM ");
+ if(data&(1<<8))
+ printf("DIMM ");
+ if(data&(1<<9))
+ printf("Burst EDO ");
+ if(data&(1<<10))
+ printf("SDRAM ");
+}
+
+static void dmi_cache_size(u16 n)
+{
+ if(n&(1<<15))
+ printf("%dK\n", (n&0x7FFF)*64);
+ else
+ printf("%dK\n", n&0x7FFF);
+}
+
+static void dmi_decode_cache(u16 c)
+{
+ if(c&(1<<0))
+ printf("Other ");
+ if(c&(1<<1))
+ printf("Unknown ");
+ if(c&(1<<2))
+ printf("Non-burst ");
+ if(c&(1<<3))
+ printf("Burst ");
+ if(c&(1<<4))
+ printf("Pipeline burst ");
+ if(c&(1<<5))
+ printf("Synchronous ");
+ if(c&(1<<6))
+ printf("Asynchronous ");
+}
+
+static char *dmi_bus_name(u8 num)
+{
+ static char *bus[]={
+ "",
+ "",
+ "",
+ "ISA ",
+ "MCA ",
+ "EISA ",
+ "PCI ",
+ "PCMCIA "
+ "VLB ",
+ "Proprietary ",
+ "CPU Slot ",
+ "Proprietary RAM ",
+ "I/O Riser ",
+ "NUBUS ",
+ "PCI-66 ",
+ "AGP ",
+ "AGP 2x ",
+ "AGP 4x "
+ };
+ static char *jpbus[]={
+ "PC98/C20",
+ "PC98/C24",
+ "PC98/E",
+ "PC98/LocalBus",
+ "PC98/Card"
+ };
+
+ if(num<=0x12)
+ return bus[num];
+ if(num>=0xA0 && num<0xA5)
+ return jpbus[num];
+ return "";
+}
+
+static char *dmi_bus_width(u8 code)
+{
+ static char *width[]={
+ "",
+ "",
+ "",
+ "8bit ",
+ "16bit ",
+ "32bit ",
+ "64bit ",
+ "128bit "
+ };
+ if(code>7)
+ return "";
+ return width[code];
+}
+
+static char *dmi_card_size(u8 v)
+{
+ if(v==2)
+ return("Short ");
+ if(v==3)
+ return("Long ");
+ return "";
+}
+
+static void dmi_card_props(u8 v)
+{
+ printf("\t\tSlot Features: ");
+ if(v&(1<<1))
+ printf("5v ");
+ if(v&(1<<2))
+ printf("3.3v ");
+ if(v&(1<<3))
+ printf("Shared ");
+ if(v&(1<<4))
+ printf("PCCard16 ");
+ if(v&(1<<5))
+ printf("CardBus ");
+ if(v&(1<<6))
+ printf("Zoom-Video ");
+ if(v&(1<<7))
+ printf("ModemRingResume ");
+ printf("\n");
+}
+
+static char *dmi_chassis_type(u8 code)
+{
+ static char *chassis_type[]={
+ "",
+ "Other",
+ "Unknown",
+ "Desktop",
+ "Low Profile Desktop",
+ "Pizza Box",
+ "Mini Tower",
+ "Tower",
+ "Portable",
+ "Laptop",
+ "Notebook",
+ "Hand Held",
+ "Docking Station",
+ "All in One",
+ "Sub Notebook",
+ "Space-saving",
+ "Lunch Box",
+ "Main Server Chassis",
+ "Expansion Chassis",
+ "SubChassis",
+ "Bus Expansion Chassis",
+ "Peripheral Chassis",
+ "RAID Chassis",
+ "Rack Mount Chassis",
+ "Sealed-case PC",
+ };
+ code &= ~0x80;
+
+ if(code>0x18)
+ return "";
+ return chassis_type[code];
+
+}
+
+static char *dmi_port_connector_type(u8 code)
+{
+ static char *connector_type[]={
+ "None",
+ "Centronics",
+ "Mini Centronics",
+ "Proprietary",
+ "DB-25 pin male",
+ "DB-25 pin female",
+ "DB-15 pin male",
+ "DB-15 pin female",
+ "DB-9 pin male",
+ "DB-9 pin female",
+ "RJ-11",
+ "RJ-45",
+ "50 Pin MiniSCSI",
+ "Mini-DIN",
+ "Micro-DIN",
+ "PS/2",
+ "Infrared",
+ "HP-HIL",
+ "Access Bus (USB)",
+ "SSA SCSI",
+ "Circular DIN-8 male",
+ "Circular DIN-8 female",
+ "On Board IDE",
+ "On Board Floppy",
+ "9 Pin Dual Inline (pin 10 cut)",
+ "25 Pin Dual Inline (pin 26 cut)",
+ "50 Pin Dual Inline",
+ "68 Pin Dual Inline",
+ "On Board Sound Input from CD-ROM",
+ "Mini-Centronics Type-14",
+ "Mini-Centronics Type-26",
+ "Mini-jack (headphones)",
+ "BNC",
+ "1394",
+ "PC-98",
+ "PC-98Hireso",
+ "PC-H98",
+ "PC-98Note",
+ "PC98Full",
+ };
+
+ if(code == 0xFF)
+ return "Other";
+
+ if (code > 0xA4)
+ return "";
+ return connector_type[code];
+
+}
+
+static char *dmi_port_type(u8 code)
+{
+ static char *port_type[]={
+ "None",
+ "Parallel Port XT/AT Compatible",
+ "Parallel Port PS/2",
+ "Parallel Port ECP",
+ "Parallel Port EPP",
+ "Parallel Port ECP/EPP",
+ "Serial Port XT/AT Compatible",
+ "Serial Port 16450 Compatible",
+ "Serial Port 16650 Compatible",
+ "Serial Port 16650A Compatible",
+ "SCSI Port",
+ "MIDI Port",
+ "Joy Stick Port",
+ "Keyboard Port",
+ "Mouse Port",
+ "SSA SCSI",
+ "USB",
+ "FireWire (IEEE P1394)",
+ "PCMCIA Type I",
+ "PCMCIA Type II",
+ "PCMCIA Type III",
+ "Cardbus",
+ "Access Bus Port",
+ "SCSI II",
+ "SCSI Wide",
+ "PC-98",
+ "PC-98-Hireso",
+ "PC-H98",
+ "Video Port",
+ "Audio Port",
+ "Modem Port",
+ "Network Port",
+ "8251 Compatible",
+ "8251 FIFO Compatible",
+ };
+
+ if(code == 0xFF)
+ return "Other";
+
+ if (code > 0xA1)
+ return "";
+ return port_type[code];
+
+}
+
+static char *dmi_processor_type(u8 code)
+{
+ static char *processor_type[]={
+ "",
+ "Other",
+ "Unknown",
+ "Central Processor",
+ "Math Processor",
+ "DSP Processor",
+ "Video Processor"
+ };
+
+ if(code == 0xFF)
+ return "Other";
+
+ if (code > 0xA1)
+ return "";
+ return processor_type[code];
+}
+
+static char *dmi_processor_family(u8 code)
+{
+ static char *processor_family[]={
+ "",
+ "Other",
+ "Unknown",
+ "8086",
+ "80286",
+ "Intel386 processor",
+ "Intel486 processor",
+ "8087",
+ "80287",
+ "80387",
+ "80487",
+ "Pentium processor Family",
+ "Pentium Pro processor",
+ "Pentium II processor",
+ "Pentium processor with MMX technology",
+ "Celeron processor",
+ "Pentium II Xeon processor",
+ "Pentium III processor",
+ "M1 Family",
+ "M1","M1","M1","M1","M1","M1", /* 13h - 18h */
+ "K5 Family",
+ "K5","K5","K5","K5","K5","K5", /* 1Ah - 1Fh */
+ "Power PC Family",
+ "Power PC 601",
+ "Power PC 603",
+ "Power PC 603+",
+ "Power PC 604",
+ };
+
+ if(code == 0xFF)
+ return "Other";
+
+ if (code > 0x24)
+ return "";
+ return processor_family[code];
+}
+
+static char *dmi_onboard_type(u8 code)
+{
+ static char *onboard_type[]={
+ "",
+ "Other",
+ "Unknown",
+ "Video",
+ "SCSI Controller",
+ "Ethernet",
+ "Token Ring",
+ "Sound",
+ };
+ code &= 0x80;
+ if (code > 7)
+ return "";
+ return onboard_type[code];
+}
+
+
+static void dmi_table(int fd, u32 base, int len, int num)
+{
+ char *buf=malloc(len);
+ struct dmi_header *dm;
+ u8 *data;
+ int i=0;
+
+ if(lseek(fd, (long)base, 0)==-1)
+ {
+ perror("dmi: lseek");
+ return;
+ }
+ if(read(fd, buf, len)!=len)
+ {
+ perror("dmi: read");
+ return;
+ }
+ data = buf;
+ while(i<num)
+ {
+ u32 u;
+ u32 u2;
+ dm=(struct dmi_header *)data;
+ printf("Handle 0x%04X\n\tDMI type %d, %d bytes.\n",
+ dm->handle,
+ dm->type, dm->length);
+
+ switch(dm->type)
+ {
+ case 0:
+ printf("\tBIOS Information Block\n");
+ printf("\t\tVendor: %s\n",
+ dmi_string(dm, data[4]));
+ printf("\t\tVersion: %s\n",
+ dmi_string(dm, data[5]));
+ printf("\t\tRelease: %s\n",
+ dmi_string(dm, data[8]));
+ printf("\t\tBIOS base: 0x%04X0\n",
+ data[7]<<8|data[6]);
+ printf("\t\tROM size: %dK\n",
+ 64*data[9]);
+ printf("\t\tCapabilities:\n");
+ u=data[13]<<24|data[12]<<16|data[11]<<8|data[10];
+ u2=data[17]<<24|data[16]<<16|data[15]<<8|data[14];
+ printf("\t\t\tFlags: 0x%08X%08X\n",
+ u2,u);
+ break;
+
+ case 1:
+ printf("\tSystem Information Block\n");
+ printf("\t\tVendor: %s\n",
+ dmi_string(dm, data[4]));
+ printf("\t\tProduct: %s\n",
+ dmi_string(dm, data[5]));
+ printf("\t\tVersion: %s\n",
+ dmi_string(dm, data[6]));
+ printf("\t\tSerial Number: %s\n",
+ dmi_string(dm, data[7]));
+ break;
+
+ case 2:
+ printf("\tBoard Information Block\n");
+ printf("\t\tVendor: %s\n",
+ dmi_string(dm, data[4]));
+ printf("\t\tProduct: %s\n",
+ dmi_string(dm, data[5]));
+ printf("\t\tVersion: %s\n",
+ dmi_string(dm, data[6]));
+ printf("\t\tSerial Number: %s\n",
+ dmi_string(dm, data[7]));
+ break;
+
+ case 3:
+ printf("\tChassis Information Block\n");
+ printf("\t\tVendor: %s\n",
+ dmi_string(dm, data[4]));
+ printf("\t\tChassis Type: %s\n",
+ dmi_chassis_type(data[5]));
+ if (data[5] & 0x80)
+ printf("\t\t\tLock present\n");
+ printf("\t\tVersion: %s\n",
+ dmi_string(dm, data[6]));
+ printf("\t\tSerial Number: %s\n",
+ dmi_string(dm, data[7]));
+ printf("\t\tAsset Tag: %s\n",
+ dmi_string(dm, data[8]));
+ break;
+
+ case 4:
+ printf("\tProcessor\n");
+ printf("\t\tSocket Designation: %s\n",
+ dmi_string(dm, data[4]));
+ printf("\t\tProcessor Type: %s\n",
+ dmi_processor_type(data[5]));
+ printf("\t\tProcessor Family: %s\n",
+ dmi_processor_family(data[6]));
+ printf("\t\tProcessor Manufacturer: %s\n",
+ dmi_string(dm, data[7]));
+ printf("\t\tProcessor Version: %s\n",
+ dmi_string(dm, data[0x10]));
+ if (dm->length <= 0x20) break;
+ printf("\t\tSerial Number: %s\n",
+ dmi_string(dm, data[0x20]));
+ printf("\t\tAsset Tag: %s\n",
+ dmi_string(dm, data[0x21]));
+ printf("\t\tVendor Part Number: %s\n",
+ dmi_string(dm, data[0x22]));
+ break;
+
+ case 5:
+ printf("\tMemory Controller\n");
+ break;
+
+ case 6:
+ printf("\tMemory Bank\n");
+ printf("\t\tSocket: %s\n", dmi_string(dm, data[4]));
+ if(data[5]!=0xFF)
+ {
+ printf("\t\tBanks: ");
+ if((data[5]&0xF0)!=0xF0)
+ printf("%d ",
+ data[5]>>4);
+ if((data[5]&0x0F)!=0x0F)
+ printf("%d",
+ data[5]&0x0F);
+ printf("\n");
+ }
+ if(data[6])
+ printf("\t\tSpeed: %dnS\n", data[6]);
+ printf("\t\tType: ");
+ dmi_decode_ram(data[8]<<8|data[7]);
+ printf("\n");
+ printf("\t\tInstalled Size: ");
+ switch(data[9]&0x7F)
+ {
+ case 0x7D:
+ printf("Unknown");break;
+ case 0x7E:
+ printf("Disabled");break;
+ case 0x7F:
+ printf("Not Installed");break;
+ default:
+ printf("%dMbyte",
+ (1<<(data[9]&0x7F)));
+ }
+ if(data[9]&0x80)
+ printf(" (Double sided)");
+ printf("\n");
+ printf("\t\tEnabled Size: ");
+ switch(data[10]&0x7F)
+ {
+ case 0x7D:
+ printf("Unknown");break;
+ case 0x7E:
+ printf("Disabled");break;
+ case 0x7F:
+ printf("Not Installed");break;
+ default:
+ printf("%dMbyte",
+ (1<<(data[10]&0x7F)));
+ }
+ if(data[10]&0x80)
+ printf(" (Double sided)");
+ printf("\n");
+ if((data[11]&4)==0)
+ {
+ if(data[11]&(1<<0))
+ printf("\t\t*** BANK HAS UNCORRECTABLE ERRORS (BIOS DISABLED)\n");
+ if(data[11]&(1<<1))
+ printf("\t\t*** BANK LOGGED CORRECTABLE ERRORS AT BOOT\n");
+ }
+ break;
+ case 7:
+ {
+ static char *types[4]={
+ "Internal ", "External ",
+ "", ""};
+ static char *modes[4]={
+ "write-through",
+ "write-back",
+ "",""};
+
+ printf("\tCache\n");
+ printf("\t\tSocket: %s\n",
+ dmi_string(dm, data[4]));
+ u=data[6]<<8|data[5];
+ printf("\t\tL%d %s%sCache: ",
+ 1+(u&7), (u&(1<<3))?"socketed ":"",
+ types[(u>>5)&3]);
+ if(u&(1<<7))
+ printf("%s\n",
+ modes[(u>>8)&3]);
+ else
+ printf("disabled\n");
+ printf("\t\tL%d Cache Size: ", 1+(u&7));
+ dmi_cache_size(data[7]|data[8]<<8);
+ printf("\t\tL%d Cache Maximum: ", 1+(u&7));
+ dmi_cache_size(data[9]|data[10]<<8);
+ printf("\t\tL%d Cache Type: ", 1+(u&7));
+ dmi_decode_cache(data[13]);
+ printf("\n");
+ }
+ break;
+
+ case 8:
+ printf("\tPort Connector\n");
+ printf("\t\tInternal Designator: %s\n",
+ dmi_string(dm, data[4]));
+ printf("\t\tInternal Connector Type: %s\n",
+ dmi_port_connector_type(data[5]));
+ printf("\t\tExternal Designator: %s\n",
+ dmi_string(dm, data[6]));
+ printf("\t\tExternal Connector Type: %s\n",
+ dmi_port_connector_type(data[7]));
+ printf("\t\tPort Type: %s\n",
+ dmi_port_type(data[8]));
+ break;
+
+
+
+ case 9:
+ printf("\tCard Slot\n");
+ printf("\t\tSlot: %s\n",
+ dmi_string(dm, data[4]));
+ printf("\t\tType: %s%s%s\n",
+ dmi_bus_width(data[6]),
+ dmi_card_size(data[8]),
+ dmi_bus_name(data[5]));
+ if(data[7]==3)
+ printf("\t\tStatus: Available.\n");
+ if(data[7]==4)
+ printf("\t\tStatus: In use.\n");
+ if(data[11]&0xFE)
+ dmi_card_props(data[11]);
+ break;
+
+ case 10:
+ printf("\tOn Board Devices Information\n");
+ for (u=0; u<((dm->length - 4)/2); u++) {
+ printf("\t\tDescription: %s : %s\n",
+ dmi_string(dm, data[5+(2*u)]),
+ (data[4+(2*u)]) & 0x80 ?
+ "Enabled" : "Disabled");
+ printf("\t\tType: %s\n",
+ dmi_onboard_type(data[4+(2*u)]));
+
+ }
+
+ break;
+
+
+ case 11:
+ printf("\tOEM Data\n");
+ for(u=1;u<=data[4];u++)
+ printf("\t\t%s\n", dmi_string(dm,u));
+ break;
+ case 12:
+ printf("\tConfiguration Information\n");
+ for(u=1;u<=data[4];u++)
+ printf("\t\t%s\n", dmi_string(dm,u));
+ break;
+
+ case 13:
+ printf("\tBIOS Language Information\n");
+ break;
+
+ case 14:
+ printf("\tGroup Associations\n");
+ for (u=0; u<(dm->length - 5)/3 ; u++) {
+ printf("\t\tGroup Name: %s\n",
+ dmi_string(dm,data[4]));
+ printf("\t\t\tType: 0x%02x\n", *(data+5+(u*3)));
+ printf("\t\t\tHandle: 0x%04x\n",
+ *(u16*)(data+6+(u*3)));
+ }
+ break;
+
+
+ case 15:
+ printf("\tEvent Log\n");
+ printf("\t\tLog Area: %d bytes.\n",
+ data[5]<<8|data[4]);
+ printf("\t\tLog Header At: %d.\n",
+ data[7]<<8|data[6]);
+ printf("\t\tLog Data At: %d.\n",
+ data[9]<<8|data[8]);
+ printf("\t\tLog Type: %d.\n",
+ data[10]);
+ if(data[11]&(1<<0))
+ printf("\t\tLog Valid: Yes.\n");
+ if(data[11]&(1<<1))
+ printf("\t\t**Log Is Full**.\n");
+ break;
+
+ case 16:
+ printf("\tPhysical Memory Array\n");
+ break;
+ case 17:
+ printf("\tMemory Device\n");
+ break;
+ case 18:
+ printf("\t32-bit Memory Error Information\n");
+ break;
+ case 19:
+ printf("\tMemory Array Mapped Address\n");
+ break;
+ case 20:
+ printf("\tMemory Device Mapped Address\n");
+ break;
+ case 24:
+ printf("\tHardware Security\n");
+ break;
+ case 25:
+ printf("\tSystem Power Controls\n");
+ break;
+ case 32:
+ printf("\tSystem Boot Information\n");
+ break;
+ case 126:
+ printf("\tInactive\n");
+ break;
+
+ case 127:
+ printf("\tEnd-of-Table\n");
+ break;
+
+ default:
+ if (dm->length > 4)
+ dump_raw_data(data+4, dm->length-4);
+ break;
+
+
+
+ }
+ data+=dm->length;
+ while(*data || data[1])
+ data++;
+ data+=2;
+ i++;
+ }
+ free(buf);
+}
+
+
+char key[8]={'R','S','D',' ','P','T','R',' '};
+
+char zot[16];
+
+int main(int argc, char *argv[])
+{
+ unsigned char buf[20];
+ int fd=open("/dev/mem", O_RDONLY);
+ long fp=0xE0000L;
+ if(fd==-1)
+ {
+ perror("/dev/mem");
+ exit(1);
+ }
+ if(lseek(fd,fp,0)==-1)
+ {
+ perror("seek");
+ exit(1);
+ }
+
+
+ fp -= 16;
+
+ while( fp < 0xFFFFF)
+ {
+ fp+=16;
+ if(read(fd, buf, 16)!=16)
+ perror("read");
+// if(memcmp(buf, zot, 16)==0)
+// printf("*");
+ if(memcmp(buf, "_SM_", 4)==0) {
+ printf("SMBIOS %d.%d present.\n", buf[6], buf[7]);
+ }
+
+ if(memcmp(buf, "_SYSID_", 7)==0)
+ printf("SYSID present.\n");
+ if(memcmp(buf, "_DMI_", 5)==0)
+ {
+ u16 num=buf[13]<<8|buf[12];
+ u16 len=buf[7]<<8|buf[6];
+ u32 base=buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8];
+
+ printf("DMI %d.%d present.\n",
+ buf[14]>>4, buf[14]&0x0F);
+ printf("%d structures occupying %d bytes.\n",
+ buf[13]<<8|buf[12],
+ buf[7]<<8|buf[6]);
+ printf("DMI table at 0x%08X.\n",
+ buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8]);
+ dmi_table(fd, base,len, num);
+ }
+ if(memcmp(buf, "$PnP", 4)==0)
+ printf("PNP BIOS present.\n");
+ if(memcmp(buf, key, 8)==0)
+ {
+ int a;
+ unsigned char sum=0;
+ unsigned int i=0, checksum=0;
+ printf("RSD PTR found at 0x%lX\n", fp);
+ for (i=0; i<20; i++) checksum += buf[i];
+ if (checksum != 0) {
+ printf("checksum failed.\n");
+ }
+
+ if(buf[15]!=0)
+ {
+ printf("Reserved check failed.\n");
+ }
+ printf("OEM ");
+ fwrite(buf+9, 6, 1, stdout);
+ printf("\n");
+ read(fd,buf+16,4);
+ lseek(fd, -4, 1);
+ for(a=0;a<20;a++)
+ sum+=buf[a];
+ if(sum!=0)
+ printf("Bad checksum.\n");
+ }
+ }
+ close(fd);
+ return 0;
+}