--- /dev/null
+#include <stdio.h>
+#include <ctype.h>
+
+//Rev 0.1 Original
+// 8 Jan 2001 MJH Added code to write data to Binary file
+// note: outputfile is name.bin, where name is first part
+// of input file. ie tmp.rec -> tmp.bin
+//
+// srec2bin <input SREC file> <Output Binary File> <If Present, Big Endian>
+//
+// TAG
+// bit32u TAG_BIG = 0xDEADBE42;
+// bit32u TAG_LITTLE = 0xFEEDFA42;
+//
+// File Structure
+//
+// TAG : 32 Bits
+// [DATA RECORDS]
+//
+// Data Records Structure
+//
+// LENGTH : 32 Bits <- Length of DATA, excludes ADDRESS and CHECKSUM
+// ADDRESS : 32 Bits
+// DATA : 8 Bits * LENGTH
+// CHECKSUM: 32 Bits <- 0 - (Sum of Length --> End of Data)
+//
+// Note : If Length == 0, Address will be Program Start
+//
+//
+//
+//
+//
+
+#define MajRevNum 0
+#define MinRevNum 2
+
+
+#define EndianSwitch(x) ((x >> 24) | (x << 24) | ((x << 8) & (0x00FF0000)) | ((x >> 8) & (0x0000FF00)) )
+
+typedef unsigned char bit8u;
+typedef unsigned int bit32u;
+typedef int bit32;
+
+#define FALSE 0
+#define TRUE (!FALSE)
+
+
+bit32u CheckSum;
+int RecStart;
+int debug;
+int verbose;
+
+FILE *OpenOutputFile( char *Name );
+FILE *fOut;
+bit32u RecLength=0;
+
+bit32u AddressCurrent;
+
+bit32u gh(char *cp,int nibs);
+
+int BigEndian;
+
+int inputline;
+
+// char buf[16*1024];
+
+char buffer[2048];
+char *cur_ptr;
+int cur_line=0;
+int cur_len=0;
+
+int s1s2s3_total=0;
+
+bit32u PBVal;
+int PBValid;
+bit32u PBAdr;
+
+
+void dumpfTell(char *s, bit32u Value)
+{
+ int Length;
+ Length = (int) RecLength;
+ if (debug)
+ printf("[%s ] ftell()[0x%08lX] Length[0x%4X] Length[%4d] Value[0x%08x]\n",
+ s, ftell(fOut), Length, Length, Value);
+}
+
+void DispHex(bit32u Hex)
+{
+// printf("%X", Hex);
+}
+
+void WaitDisplay(void)
+{
+ static int Count=0;
+ static int Index=0;
+ char iline[]={"-\\|/"};
+
+ Count++;
+ if ((Count % 32)==0)
+ {
+ if (verbose)
+ printf("%c%c",iline[Index++],8);
+ Index &= 3;
+ }
+}
+
+
+void binOut32 ( bit32u Data )
+{
+// On UNIX machine all 32bit writes need ENDIAN switched
+// Data = EndianSwitch(Data);
+// fwrite( &Data, sizeof(bit32u), 1, fOut);
+
+ char sdat[4];
+ int i;
+
+ for(i=0;i<4;i++)
+ sdat[i]=(char)(Data>>(i*8));
+ fwrite( sdat, 1, 4, fOut);
+ dumpfTell("Out32" , Data);
+}
+
+// Only update RecLength on Byte Writes
+// All 32 bit writes will be for Length etc
+
+void binOut8 ( bit8u Data )
+{
+ int n;
+ dumpfTell("B4Data" , (bit32u) (Data & 0xFF) );
+ n = fwrite( &Data, sizeof(bit8u), 1, fOut);
+ if (n != 1)
+ printf("Error in writing %X for Address 0x%8X\n", Data, AddressCurrent);
+ RecLength += 1;
+}
+
+// Currently ONLY used for outputting Program Start
+
+void binRecStart(bit32u Address)
+{
+ RecLength = 0;
+ CheckSum = Address;
+ RecStart = TRUE;
+
+ if (debug)
+ printf("[RecStart] CheckSum[0x%08X] Length[%4d] Address[0x%08X]\n",
+ CheckSum, RecLength, Address);
+
+
+ dumpfTell("RecLength", RecLength);
+ binOut32( RecLength );
+ dumpfTell("Address", Address);
+ binOut32( Address );
+}
+
+void binRecEnd(void)
+{
+ long RecEnd;
+
+ if (!RecStart) // if no record started, do not end it
+ {
+ return;
+ }
+
+ RecStart = FALSE;
+
+
+ RecEnd = ftell(fOut); // Save Current position
+
+ if (debug)
+ printf("[RecEnd ] CheckSum[0x%08X] Length[%4d] Length[0x%X] RecEnd[0x%08lX]\n",
+ CheckSum, RecLength, RecLength, RecEnd);
+
+ fseek( fOut, -((long) RecLength), SEEK_CUR); // move back Start Of Data
+
+ dumpfTell("Data ", -1);
+
+ fseek( fOut, -4, SEEK_CUR); // move back Start Of Address
+
+ dumpfTell("Address ", -1);
+
+ fseek( fOut, -4, SEEK_CUR); // move back Start Of Length
+
+ dumpfTell("Length ", -1);
+
+ binOut32( RecLength );
+
+ fseek( fOut, RecEnd, SEEK_SET); // move to end of Record
+
+ CheckSum += RecLength;
+
+ CheckSum = ~CheckSum + 1; // Two's complement
+
+ binOut32( CheckSum );
+
+ if (verbose)
+ printf("[Created Record of %d Bytes with CheckSum [0x%8X]\n", RecLength, CheckSum);
+}
+
+void binRecOutProgramStart(bit32u Address)
+{
+ if (Address != (AddressCurrent+1))
+ {
+ binRecEnd();
+ binRecStart(Address);
+ }
+ AddressCurrent = Address;
+}
+void binRecOutByte(bit32u Address, bit8u Data)
+{
+ // If Address is one after Current Address, output Byte
+ // If not, close out last record, update Length, write checksum
+ // Then Start New Record, updating Current Address
+
+ if (Address != (AddressCurrent+1))
+ {
+ binRecEnd();
+ binRecStart(Address);
+ }
+ AddressCurrent = Address;
+ CheckSum += Data;
+ binOut8( Data );
+}
+
+//=============================================================================
+// SUPPORT FUNCTIONS
+//=============================================================================
+int readline(FILE *fil,char *buf,int len)
+{
+ int rlen;
+
+ rlen=0;
+ if (len==0) return(0);
+ while(1)
+ {
+ if (cur_len==0)
+ {
+ cur_len=fread(buffer, 1, sizeof(buffer), fil);
+ if (cur_len==0)
+ {
+ if (rlen)
+ {
+ *buf=0;
+ return(rlen);
+ }
+ return(-1);
+ }
+ cur_ptr=buffer;
+ }
+ if (cur_len)
+ {
+ if (*cur_ptr=='\n')
+ {
+ *buf=0;
+ cur_ptr++;
+ cur_len--;
+ return(rlen);
+ }
+ else
+ {
+ if ((len>1)&&(*cur_ptr!='\r'))
+ {
+ *buf++=*cur_ptr++;
+ len--;
+ }
+ else
+ cur_ptr++;
+
+ rlen++;
+ cur_len--;
+ }
+ }
+ else
+ {
+ *buf=0;
+ cur_ptr++;
+ cur_len--;
+ return(rlen);
+ }
+ }
+}
+
+
+int SRLerrorout(char *c1,char *c2)
+{
+ printf("\nERROR: %s - '%s'.",c1,c2);
+ return(FALSE);
+}
+
+
+int checksum(char *cp,int count)
+{
+ char *scp;
+ int cksum;
+ int dum;
+
+ scp=cp;
+ while(*scp)
+ {
+ if (!isxdigit(*scp++))
+ return(SRLerrorout("Invalid hex digits",cp));
+ }
+ scp=cp;
+
+ cksum=count;
+
+ while(count)
+ {
+ cksum += gh(scp,2);
+ if (count == 2)
+ dum = ~cksum;
+ scp += 2;
+ count--;
+ }
+ cksum&=0x0ff;
+ // printf("\nCk:%02x",cksum);
+ return(cksum==0x0ff);
+}
+
+bit32u gh(char *cp,int nibs)
+{
+ int i;
+ bit32u j;
+
+ j=0;
+
+ for(i=0;i<nibs;i++)
+ {
+ j<<=4;
+ if ((*cp>='a')&&(*cp<='z')) *cp &= 0x5f;
+ if ((*cp>='0')&&(*cp<='9'))
+ j += (*cp-0x30);
+ else
+ if ((*cp>='A')&&(*cp<='F'))
+ j += (*cp-0x37);
+ else
+ SRLerrorout("Bad Hex char", cp);
+ cp++;
+ }
+ return(j);
+}
+
+
+//=============================================================================
+// PROCESS SREC LINE
+//=============================================================================
+
+int srecLine(char *pSrecLine)
+{
+ char *scp,ch;
+ int itmp,count,dat;
+ bit32u adr;
+ static bit32u RecordCounter=0;
+
+ cur_line++;
+ scp=pSrecLine;
+
+ if (*pSrecLine!='S')
+ return(SRLerrorout("Not an Srecord file",scp));
+ pSrecLine++;
+ if (strlen(pSrecLine)<4)
+ return(SRLerrorout("Srecord too short",scp));
+
+ ch=*pSrecLine++;
+
+ count=gh(pSrecLine,2);
+
+ pSrecLine += 2;
+
+ // if(debug)
+ // printf("count %d, strlen(pSrecLine) = %d, pSrecLine =[%s]\n", count, strlen(pSrecLine), pSrecLine);
+ RecordCounter++;
+ DispHex(RecordCounter);
+
+ if ((count*2) != strlen(pSrecLine)) return(SRLerrorout("Count field larger than record",scp));
+
+ if (!checksum(pSrecLine, count)) return(SRLerrorout("Bad Checksum",scp));
+
+ switch(ch)
+ {
+ case '0': if (count<3) return(SRLerrorout("Invalid Srecord count field",scp));
+ itmp=gh(pSrecLine,4); pSrecLine+=4; count-=2;
+ if (itmp) return(SRLerrorout("Srecord 1 address not zero",scp));
+ break;
+ case '1': if (count<3) return(SRLerrorout("Invalid Srecord count field",scp));
+ return(SRLerrorout("Srecord Not valid for MIPS",scp));
+ break;
+ case '2': if (count<4) return(SRLerrorout("Invalid Srecord count field",scp));
+ return(SRLerrorout("Srecord Not valid for MIPS",scp));
+ break;
+ case '3': if (count<5) return(SRLerrorout("Invalid Srecord count field",scp));
+ adr=gh(pSrecLine,8); pSrecLine+=8; count-=4;
+ count--;
+ while(count)
+ {
+ dat=gh(pSrecLine,2); pSrecLine+=2; count--;
+ binRecOutByte(adr, (char) (dat & 0xFF));
+ adr++;
+ }
+ s1s2s3_total++;
+ break;
+ case '4': return(SRLerrorout("Invalid Srecord type",scp));
+ break;
+ case '5': if (count<3) return(SRLerrorout("Invalid Srecord count field",scp));
+ itmp=gh(pSrecLine,4); pSrecLine+=4; count-=2;
+ if (itmp|=s1s2s3_total) return(SRLerrorout("Incorrect number of S3 Record processed",scp));
+ break;
+ case '6': return(SRLerrorout("Invalid Srecord type",scp));
+ break;
+ case '7': // PROGRAM START
+ if (count<5) return(SRLerrorout("Invalid Srecord count field",scp));
+ adr=gh(pSrecLine,8); pSrecLine+=8; count-=4;
+ if (count!=1) return(SRLerrorout("Invalid Srecord count field",scp));
+ binRecOutProgramStart(adr);
+ break;
+ case '8': if (count<4) return(SRLerrorout("Invalid Srecord count field",scp));
+ return(SRLerrorout("Srecord Not valid for MIPS",scp));
+ break;
+ case '9': if (count<3) return(SRLerrorout("Invalid Srecord count field",scp));
+ return(SRLerrorout("Srecord Not valid for MIPS",scp));
+ break;
+ default:
+ break;
+ }
+ return(TRUE);
+}
+
+
+//=============================================================================
+// MAIN LOGIC, READS IN LINE AND OUTPUTS BINARY
+//=============================================================================
+
+int srec2bin(int argc,char *argv[],int verbose)
+{
+ int i,rlen,sts;
+ FILE *fp;
+ char ac;
+ char buff[256];
+ bit32u TAG_BIG = 0xDEADBE42;
+ bit32u TAG_LITTLE = 0xFEEDFA42;
+
+ bit32u Tag;
+
+
+ if(argc < 3)
+ {
+ printf("\nError: <srec2bin <srec input file> <bin output file>\n\n");
+ return(0);
+ }
+
+ if (argc > 3) BigEndian=TRUE; else BigEndian=FALSE;
+
+ if (BigEndian)
+ Tag = TAG_BIG;
+ else
+ Tag = TAG_LITTLE;
+
+ if (verbose)
+ printf("\nEndian: %s, Tag is 0x%8X\n",(BigEndian)?"BIG":"LITTLE", Tag);
+
+ fp = fopen(argv[1],"rt");
+
+ if (fp==NULL)
+ {
+ printf("\nError: Opening input file, %s.", argv[1]);
+ return(0);
+ }
+
+ fOut = fopen( argv[2], "wb");
+
+ if (fOut==NULL)
+ {
+ printf("\nError: Opening Output file, %s.", argv[2]);
+ if(fp) fclose(fp);
+ return(0);
+ }
+
+ RecStart = FALSE;
+
+ AddressCurrent = 0xFFFFFFFFL;
+
+ // Setup Tag
+
+ dumpfTell("Tag", Tag);
+
+ binOut32(Tag);
+
+
+ inputline=0;
+ sts=TRUE;
+
+ rlen = readline(fp,buff,sizeof buff);
+
+ while( (sts) && (rlen != -1))
+ {
+ if (strlen(buff))
+ {
+ sts &= srecLine(buff);
+ WaitDisplay();
+ }
+ rlen = readline(fp,buff,sizeof buff);
+ }
+
+
+ // printf("PC: 0x%08X, Length 0x%08X, Tag 0x%08X\n", ProgramStart, RecLength, TAG_LITTLE);
+
+ binRecEnd();
+
+ if(fp) fclose(fp);
+ if(fOut) fclose(fOut);
+
+ return(1);
+}
+
+main(int argc, char *argv[])
+{
+ debug = TRUE;
+ debug = FALSE;
+ verbose = FALSE;
+ srec2bin(argc,argv,verbose);
+ return 0;
+}
+
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