/***************************************************************************

    jedutil.c

    JEDEC file utilities.

****************************************************************************

    Copyright Aaron Giles
    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are
    met:

        * Redistributions of source code must retain the above copyright
          notice, this list of conditions and the following disclaimer.
        * Redistributions in binary form must reproduce the above copyright
          notice, this list of conditions and the following disclaimer in
          the documentation and/or other materials provided with the
          distribution.
        * Neither the name 'MAME' nor the names of its contributors may be
          used to endorse or promote products derived from this software
          without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.

****************************************************************************

    Binary file format:

    Offset
        0 = Total number of fuses (32 bits)
        4 = Raw fuse data, packed 8 bits at a time, LSB to MSB

****************************************************************************

    Known types:

    20-pin devices:
        PAL10H8     = QP20 QF0320
        PAL12H6     = QP20 QF0320
        PAL14H4     = QP20
        PAL16H2     = QP20
        PAL16C1     = QP20
        PAL10L8     = QP20 QF0320
        PAL12L6     = QP20
        PAL14L4     = QP20
        PAL16L2     = QP20

        15S8        = QP20 QF0448

        PLS153      = QP20 QF1842

        PAL16L8     = QP20 QF2048

        PAL16RA8    = QP20 QF2056

        PAL16V8R    = QP20 QF2194
        PALCE16V8   = QP20 QF2194
        GAL16V8A    = QP20 QF2194

        18CV8       = QP20 QF2696

    24-pin devices:
        GAL20V8A    = QP24 QF2706
        GAL22V10    = QP24 QF5892

    28-pin devices:
        PLS100      = QP28 QF1928

***************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "jedparse.h"



/***************************************************************************
    GLOBAL VARIABLES
***************************************************************************/

static UINT8 *srcbuf;
static size_t srcbuflen;

static UINT8 *dstbuf;
static size_t dstbuflen;



/***************************************************************************
    CORE IMPLEMENTATION
***************************************************************************/

/*-------------------------------------------------
    read_source_file - read a raw source file
    into an allocated memory buffer
-------------------------------------------------*/

static int read_source_file(const char *srcfile)
{
	size_t bytes;
	FILE *file;

	/* open the source file */
	file = fopen(srcfile, "rb");
	if (!file)
	{
		fprintf(stderr, "Unable to open source file '%s'!\n", srcfile);
		return 1;
	}

	/* allocate memory for the data */
	fseek(file, 0, SEEK_END);
	srcbuflen = ftell(file);
	fseek(file, 0, SEEK_SET);
	srcbuf = (UINT8 *)malloc(srcbuflen);
	if (!srcbuf)
	{
		fprintf(stderr, "Unable to allocate %d bytes for the source!\n", (int)srcbuflen);
		fclose(file);
		return 1;
	}

	/* read the data */
	bytes = fread(srcbuf, 1, srcbuflen, file);
	if (bytes != srcbuflen)
	{
		fprintf(stderr, "Error reading %d bytes from the source!\n", (int)srcbuflen);
		free(srcbuf);
		fclose(file);
		return 1;
	}

	/* close up shop */
	fclose(file);
	return 0;
}



/*-------------------------------------------------
    write_dest_file - write a memory buffer raw
    into a desintation file
-------------------------------------------------*/

static int write_dest_file(const char *dstfile)
{
	size_t bytes;
	FILE *file;

	/* open the source file */
	file = fopen(dstfile, "wb");
	if (!file)
	{
		fprintf(stderr, "Unable to open target file '%s'!\n", dstfile);
		return 1;
	}

	/* write the data */
	bytes = fwrite(dstbuf, 1, dstbuflen, file);
	if (bytes != dstbuflen)
	{
		fprintf(stderr, "Error writing %d bytes to the target!\n", (int)dstbuflen);
		fclose(file);
		return 1;
	}

	/* close up shop */
	fclose(file);
	return 0;
}



/*-------------------------------------------------
    main - primary entry point
-------------------------------------------------*/

int main(int argc, char *argv[])
{
	const char *srcfile, *dstfile;
	int src_is_jed, dst_is_jed;
	int numfuses = 0;
	jed_data jed;
	int len;
	int err;

	/* needs at least two arguments */
	if (argc < 3)
	{
		fprintf(stderr,
			"Usage:\n"
			"  jedutil <source.jed> <target.bin> [fuses] -- convert JED to binary form\n"
			"  jedutil <source.bin> <target.jed> -- convert binary to JED form\n"
		);
		return 0;
	}

	/* extract arguments */
	srcfile = argv[1];
	dstfile = argv[2];
	if (argc >= 4)
		numfuses = atoi(argv[3]);

	/* does the source end in '.jed'? */
	len = strlen(srcfile);
	src_is_jed = (srcfile[len - 4] == '.' &&
	             tolower((UINT8)srcfile[len - 3]) == 'j' &&
	             tolower((UINT8)srcfile[len - 2]) == 'e' &&
	             tolower((UINT8)srcfile[len - 1]) == 'd');

	/* does the destination end in '.jed'? */
	len = strlen(dstfile);
	dst_is_jed = (dstfile[len - 4] == '.' &&
	             tolower((UINT8)dstfile[len - 3]) == 'j' &&
	             tolower((UINT8)dstfile[len - 2]) == 'e' &&
	             tolower((UINT8)dstfile[len - 1]) == 'd');

	/* error if neither or both are .jed */
	if (!src_is_jed && !dst_is_jed)
	{
		fprintf(stderr, "At least one of the filenames must end in .jed!\n");
		return 1;
	}
	if (src_is_jed && dst_is_jed)
	{
		fprintf(stderr, "Both filenames cannot end in .jed!\n");
		return 1;
	}

	/* read the source file */
	err = read_source_file(srcfile);
	if (err != 0)
		return 1;

	/* if the source is JED, convert to binary */
	if (src_is_jed)
	{
		printf("Converting '%s' to binary form '%s'\n", srcfile, dstfile);

		/* read the JEDEC data */
		err = jed_parse(srcbuf, srcbuflen, &jed);
		switch (err)
		{
			case JEDERR_INVALID_DATA:	fprintf(stderr, "Fatal error: Invalid .JED file\n"); return 1;
			case JEDERR_BAD_XMIT_SUM:	fprintf(stderr, "Fatal error: Bad transmission checksum\n"); return 1;
			case JEDERR_BAD_FUSE_SUM:	fprintf(stderr, "Fatal error: Bad fusemap checksum\n"); return 1;
		}

		/* override the number of fuses */
		if (numfuses != 0)
			jed.numfuses = numfuses;

		/* print out data */
		printf("Source file read successfully\n");
		printf("  Total fuses = %d\n", jed.numfuses);

		/* generate the output */
		dstbuflen = jedbin_output(&jed, NULL, 0);
		dstbuf = (UINT8 *)malloc(dstbuflen);
		if (!dstbuf)
		{
			fprintf(stderr, "Unable to allocate %d bytes for the target buffer!\n", (int)dstbuflen);
			return 1;
		}
		dstbuflen = jedbin_output(&jed, dstbuf, dstbuflen);
	}

	/* if the source is binary, convert to JED */
	else
	{
		printf("Converting '%s' to JED form '%s'\n", srcfile, dstfile);

		/* read the binary data */
		err = jedbin_parse(srcbuf, srcbuflen, &jed);
		switch (err)
		{
			case JEDERR_INVALID_DATA:	fprintf(stderr, "Fatal error: Invalid binary JEDEC file\n"); return 1;
		}

		/* print out data */
		printf("Source file read successfully\n");
		printf("  Total fuses = %d\n", jed.numfuses);

		/* generate the output */
		dstbuflen = jed_output(&jed, NULL, 0);
		dstbuf = (UINT8 *)malloc(dstbuflen);
		if (!dstbuf)
		{
			fprintf(stderr, "Unable to allocate %d bytes for the target buffer!\n", (int)dstbuflen);
			return 1;
		}
		dstbuflen = jed_output(&jed, dstbuf, dstbuflen);
	}

	/* write the destination file */
	err = write_dest_file(dstfile);
	if (err != 0)
		return 1;

	printf("Target file written successfully\n");
	return 0;
}
