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