+CLEANFILES = *~ *.bb *.bbg

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+bin_PROGRAMS = flexloader

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+ byteblaster.c \

+ flexloader.h \

+ flexloader.c \

+ main.h \

+ main.c

+

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+# This Makefile.in is free software; the Free Software Foundation

+# gives unlimited permission to copy and/or distribute it,

+# with or without modifications, as long as this notice is preserved.

+

+# This program is distributed in the hope that it will be useful,

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+

+bin_PROGRAMS = flexloader

+flexloader_SOURCES = byteblaster.h \

+ byteblaster.c \

+ flexloader.h \

+ flexloader.c \

+ main.h \

+ main.c

+

+subdir = src

+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4

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+

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+ echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install

+mostlyclean-generic:

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+ -test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)

+

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+ -rm -f $(CONFIG_CLEAN_FILES)

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+

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+ distclean-generic distclean-tags distdir dvi dvi-am info \

+ info-am install install-am install-binPROGRAMS install-data \

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+

+# Tell versions [3.59,3.63) of GNU make to not export all variables.

+# Otherwise a system limit (for SysV at least) may be exceeded.

+.NOEXPORT:

+/***************************************************************************

+ byteblaster.c - Low-level functions to access the byteblaster

+ -------------------------------------------------------------

+

+ begin : Sun Jan 09 2005

+ copyright : (C) 2005 by Aurelien Jarno

+ email : aurelien@aurel32.net

+ ***************************************************************************/

+

+/***************************************************************************

+ * *

+ * This program is free software; you can redistribute it and/or modify *

+ * it under the terms of the GNU General Public License as published by *

+ * the Free Software Foundation; either version 2 of the License, or *

+ * (at your option) any later version. *

+ * *

+ ***************************************************************************/

+

+/* Application specific includes */

+#include "byteblaster.h"

+#include "main.h"

+

+/* Standard includes */

+#include <stdio.h>

+#include <fcntl.h>

+#include <unistd.h>

+#include <linux/ppdev.h>

+#include <linux/parport.h>

+#include <sys/ioctl.h>

+

+/***************************************************************************

+ * *

+ * Private functions *

+ * *

+ ***************************************************************************/

+

+static void out_data(int device, unsigned char mask, unsigned char val)

+{

+ static unsigned char data = 0;

+

+ data = (data & ~mask) | val;

+ ioctl(device, PPWDATA, &data);

+}

+

+static void set_AUTOFEED(int device, int value)

+{

+ struct ppdev_frob_struct frob;

+

+ frob.mask = PARPORT_CONTROL_AUTOFD;

+ frob.val = (value != 0) ? PARPORT_CONTROL_AUTOFD : 0;

+ ioctl(device, PPFCONTROL, &frob);

+ usleep(100000);

+}

+

+static void set_D5(int device, int value)

+{

+ /* D5 */

+ out_data(device, 0x20, (value != 0)? 0x20 : 0x00);

+}

+

+static int get_ACK(int device)

+{

+ unsigned char status;

+

+ ioctl(device, PPRSTATUS, &status);

+ return (status & PARPORT_STATUS_ACK) == PARPORT_STATUS_ACK;

+}

+

+static int open_parport(char *device_name)

+{

+ int dev;

+

+ if (debug)

+ printf("Opening %s\n", device_name);

+

+ dev = open(device_name, O_RDWR);

+ if (dev < 0)

+ {

+ if (!quiet)

+ perror("open");

+ return -1;

+ }

+ if (ioctl(dev, PPCLAIM) < 0)

+ {

+ if (!quiet)

+ perror("open");

+ perror("ioctl");

+ close(dev);

+ return -1;

+ }

+ return dev;

+}

+

+static void close_parport(int device)

+{

+ if (device)

+ {

+ ioctl(device, PPRELEASE);

+ close(device);

+ }

+}

+

+static int detect_byteblaster(int device)

+{

+ if (debug)

+ printf("Detecting byteblaster\n");

+

+ /* ACK and D5 are connected together */

+ if (debug)

+ printf("Driving D5 low\n");

+ set_D5(device, 0);

+ usleep(10000);

+ if (get_ACK(device) == 1)

+ {

+ if (debug)

+ fprintf(stderr, "ACK stuck high\n");

+ return -1;

+ }

+

+ if (debug)

+ printf("Driving D5 high\n");

+ set_D5(device, 1);

+ usleep(10000);

+ if (get_ACK(device) == 0)

+ {

+ if (debug)

+ fprintf(stderr, "ACK stuck low\n");

+ return -1;

+ }

+

+ if (debug)

+ printf("Driving D5 low\n");

+ set_D5(device, 0);

+ usleep(10000);

+ if (get_ACK(device) == 1)

+ {

+ if (debug)

+ fprintf(stderr, "ACK stuck high\n");

+ return -1;

+ }

+

+ return 0;

+}

+

+

+/***************************************************************************

+ * *

+ * Public functions *

+ * *

+ ***************************************************************************/

+

+int get_nSTATUS(int device)

+{

+ unsigned char status;

+

+ ioctl(device, PPRSTATUS, &status);

+ return (status & PARPORT_STATUS_SELECT) == PARPORT_STATUS_SELECT;

+}

+

+int get_CONF_DONE(int device)

+{

+ unsigned char status;

+

+ ioctl(device, PPRSTATUS, &status);

+ return (status & PARPORT_STATUS_BUSY) != PARPORT_STATUS_BUSY;

+}

+

+void set_DCLK(int device, int value)

+{

+ /* D0 */

+ out_data(device, 0x01, (value != 0)? 0x01 : 0x00);

+}

+

+void set_nCONFIG(int device, int value)

+{

+ /* D1 */

+ out_data(device, 0x02, (value != 0)? 0x02 : 0x00);

+}

+

+void set_DATA0(int device, int value)

+{

+ /* D6 */

+ out_data(device, 0x40, (value != 0)? 0x40 : 0x00);

+}

+

+int open_byteblaster(char *devicename)

+{

+ int dev;

+

+ dev = open_parport(devicename);

+ if (dev < 0 )

+ {

+ if (!quiet)

+ fprintf(stderr, "Can't open %s!\n", devicename);

+ return -1;

+ }

+

+ if (detect_byteblaster(dev) < 0)

+ {

+ if (!quiet)

+ fprintf(stderr, "Byteblaster not found on %s!\n", devicename);

+ close_byteblaster(dev);

+ return -1;

+ }

+

+ return dev;

+}

+

+void close_byteblaster(int device)

+{

+ enable_byteblaster(device, 0);

+ close_parport(device);

+}

+

+void enable_byteblaster(int device, int value)

+{

+ set_AUTOFEED(device, value);

+}

+

+/***************************************************************************

+ byteblaster.c - Low-level functions to access the byteblaster

+ -------------------------------------------------------------

+

+ begin : Sun Jan 09 2005

+ copyright : (C) 2005 by Aurelien Jarno

+ email : aurelien@aurel32.net

+ ***************************************************************************/

+

+/***************************************************************************

+ * *

+ * This program is free software; you can redistribute it and/or modify *

+ * it under the terms of the GNU General Public License as published by *

+ * the Free Software Foundation; either version 2 of the License, or *

+ * (at your option) any later version. *

+ * *

+ ***************************************************************************/

+

+#ifndef BYTEBLASTER_H

+#define BYTEBLASTER_H

+

+#ifdef HAVE_CONFIG_H

+ #include <config.h>

+#endif

+

+/* Subroutines */

+int open_byteblaster(char *devicename);

+void close_byteblaster(int device);

+void enable_byteblaster(int device, int value);

+

+void set_DCLK(int device, int value);

+void set_nCONFIG(int device, int value);

+void set_DATA0(int device, int value);

+

+int get_nSTATUS(int device);

+int get_CONF_DONE(int device);

+

+#endif

+/***************************************************************************

+ flexloader.c - Routines to download code to an Altera FLEX FPGA

+ ---------------------------------------------------------------

+

+ begin : Sun Jan 09 2004

+ copyright : (C) 2005 by Aurelien Jarno

+ email : aurelien@aurel32.net

+ ***************************************************************************/

+

+/***************************************************************************

+ * *

+ * This program is free software; you can redistribute it and/or modify *

+ * it under the terms of the GNU General Public License as published by *

+ * the Free Software Foundation; either version 2 of the License, or *

+ * (at your option) any later version. *

+ * *

+ ***************************************************************************/

+

+/* Application specific includes */

+#include "flexloader.h"

+#include "byteblaster.h"

+#include "main.h"

+

+/* Standard includes */

+#include <stdio.h>

+#include <sys/ioctl.h>

+#include <sys/types.h>

+#include <sys/stat.h>

+#include <fcntl.h>

+#include <unistd.h>

+

+

+/***************************************************************************

+ * *

+ * Declarations *

+ * *

+ ***************************************************************************/

+

+#define TIMEOUT 500 /* ms */

+

+

+/***************************************************************************

+ * *

+ * Private functions *

+ * *

+ ***************************************************************************/

+

+static int flex_config(int device)

+{

+ int t;

+

+ set_DCLK(device, 0);

+ set_DATA0(device, 1);

+ set_nCONFIG(device, 1);

+ enable_byteblaster(device, 1);

+ usleep(100000);

+

+ if (debug)

+ printf("Configuring FLEX\n");

+

+ for (t = TIMEOUT / 10 ; t > 0 ; t--)

+ {

+ if (get_nSTATUS(device) == 1)

+ break;

+ usleep(10000);

+ }

+ if (t == 0)

+ {

+ if (!quiet)

+ fprintf(stderr, "nSTATUS != 1\n");

+ return -1;

+ }

+

+ set_nCONFIG(device, 0);

+

+ for (t = TIMEOUT / 10 ; t > 0 ; t--)

+ {

+ if (get_nSTATUS(device) == 0)

+ break;

+ usleep(10000);

+ }

+ if (t == 0)

+ {

+ if (!quiet)

+ fprintf(stderr, "nSTATUS != 0\n");

+ return -1;

+ }

+

+ for (t = TIMEOUT / 10 ; t > 0 ; t--)

+ {

+ if (get_CONF_DONE(device) == 0)

+ break;

+ usleep(10000);

+ }

+ if (t == 0)

+ {

+ if (!quiet)

+ fprintf(stderr, "CONF_DONE != 0\n");

+ return -1;

+ }

+

+ set_nCONFIG(device, 1);

+

+ for (t = TIMEOUT / 10 ; t > 0 ; t--)

+ {

+ if (get_nSTATUS(device) == 1)

+ break;

+ usleep(10000);

+ }

+ if (t == 0)

+ {

+ if (!quiet)

+ fprintf(stderr, "nSTATUS != 1\n");

+ return -1;

+ }

+

+ usleep(40000);

+ return 0;

+}

+

+static int flex_download(int device, int file)

+{

+ int byte, bit;

+ unsigned char data;

+

+ if (debug)

+ printf("Downloading code\n");

+

+ for(byte = 0 ; ; byte++)

+ {

+ if (debug)

+ printf("Downloading byte %i\n", byte);

+

+ if (read(file, &data, 1) != 1)

+ {

+ if (!quiet)

+ fprintf(stderr, "Unexpected end of file\n");

+ return -1;

+ }

+

+ for (bit = 0 ; bit < 8 ; bit++)

+ {

+ set_DATA0(device, data & 0x01);

+ set_DCLK(device, 1);

+ set_DCLK(device, 0);

+ data >>= 1;

+

+ if (get_nSTATUS(device) == 0)

+ {

+ if (!quiet)

+ fprintf(stderr, "Checksum error\n");

+ return -1;

+ }

+

+ if (get_CONF_DONE(device) == 1)

+ {

+ if (!quiet)

+ printf("%i bytes downloaded\n", byte);

+ return 0;

+ }

+ }

+ }

+}

+

+static void flex_init(int device)

+{

+ int i;

+

+ if (debug)

+ printf("Initializing FLEX\n");

+

+ /* more clocks required to initialize the device */

+ for (i = 0 ; i < 10 ; i++)

+ {

+ set_DCLK(device, 1);

+ set_DCLK(device, 0);

+ }

+}

+

+

+/***************************************************************************

+ * *

+ * Public functions *

+ * *

+ ***************************************************************************/

+

+int flex_download_program(char *device, char *rbf_file)

+{

+ int fd;

+ int byteblaster;

+

+ if (debug)

+ printf("Opening %s\n", rbf_file);

+

+ fd = open(rbf_file, O_RDONLY);

+

+ if (fd < 0)

+ {

+ if (!quiet)

+ {

+ perror("open");

+ fprintf(stderr, "Can't open %s!\n", rbf_file);

+ }

+ return -1;

+ }

+

+ byteblaster = open_byteblaster(device);

+

+ if (byteblaster < 0)

+ return -1;

+

+ if (flex_config(byteblaster) < 0)

+ {

+ if (!quiet)

+ fprintf(stderr, "Altera FLEX not found!\n");

+ return -1;

+ }

+

+ if (flex_download(byteblaster, fd) < 0)

+ {

+ if (!quiet)

+ fprintf(stderr, "Download failed\n");

+ return -1;

+ }

+

+ flex_init(byteblaster);

+

+ close_byteblaster(byteblaster);

+

+ close(fd);

+ return 0;

+}

+

+/***************************************************************************

+ flexloader.h - Routines to download code to an Altera FLEX FPGA

+ ---------------------------------------------------------------

+

+ begin : Sun Jan 09 2005

+ copyright : (C) 2005 by Aurelien Jarno

+ email : aurelien@aurel32.net

+ ***************************************************************************/

+

+/***************************************************************************

+ * *

+ * This program is free software; you can redistribute it and/or modify *

+ * it under the terms of the GNU General Public License as published by *

+ * the Free Software Foundation; either version 2 of the License, or *

+ * (at your option) any later version. *

+ * *

+ ***************************************************************************/

+

+#ifndef FLEXLOADER_H

+#define FLEXLOADER_H

+

+#ifdef HAVE_CONFIG_H

+ #include <config.h>

+#endif

+

+/* Subroutines */

+int flex_download_program(char *device, char *rbf_file);

+

+#endif

+/***************************************************************************

+ main.c - Main program

+ ---------------------

+

+ begin : Sun Jan 09 2005

+ copyright : (C) 2005 by Aurelien Jarno

+ email : aurelien@aurel32.net

+ ***************************************************************************/

+

+/***************************************************************************

+ * *

+ * This program is free software; you can redistribute it and/or modify *

+ * it under the terms of the GNU General Public License as published by *

+ * the Free Software Foundation; either version 2 of the License, or *

+ * (at your option) any later version. *

+ * *

+ ***************************************************************************/

+

+/* Application specific includes */

+#include "main.h"

+#include "flexloader.h"

+

+/* Standard includes */

+#include <stdio.h>

+#include <stdlib.h>

+#include <string.h>

+#include <unistd.h>

+#include <getopt.h>

+#include <sys/shm.h>

+#include <signal.h>

+#include <sys/types.h>

+#include <sys/wait.h>

+

+/***************************************************************************

+ * *

+ * Declarations *

+ * *

+ ***************************************************************************/

+

+/* Variables */

+int debug = 0;

+int quiet = 0;

+

+

+/***************************************************************************

+ * *

+ * Functions *

+ * *

+ ***************************************************************************/

+

+static void print_usage(void)

+{

+ printf("Usage: "PACKAGE" parport_device rbf_file\n"

+ "\n"

+ "Valid options are:\n"

+ " -d, --debug Print debug messages.\n"

+ " -h, --help Print this message.\n"

+ " -q, --quiet Don't print any message.\n"

+ " -v, --version Display "PACKAGE" version number.\n"

+ "\n");

+}

+

+static void print_banner(void)

+{

+ if (!quiet)

+ {

+ printf(PACKAGE" version "VERSION"\n");

+ printf("(C) 2005 Aurelien Jarno\n\n");

+ }

+}

+

+int main(int argc, char* argv[])

+{

+ int c;

+ int lindex = 0;

+

+ static struct option long_options[] =

+ {

+ {"debug", no_argument, NULL, 'd'},

+ {"help", no_argument, NULL, 'h'},

+ {"quiet", no_argument, NULL, 'q'},

+ {"version", no_argument, NULL, 'v'},

+ {0, 0, 0, 0}

+ };

+

+ while ((c = getopt_long (argc, argv, "dhqv", long_options, &lindex)) != -1)

+ {

+ printf("%c\n",c);

+ switch (c)

+ {

+ case 'd':

+ debug = 1;

+ break;

+

+ case 'h':

+ print_banner();

+ print_usage();

+ exit(EXIT_SUCCESS);

+ break;

+

+ case 'q':

+ quiet = 1;

+ break;

+

+ case 'v':

+ print_banner();

+ exit(EXIT_SUCCESS);

+ break;

+

+ default:

+ print_banner();

+ print_usage();

+ exit(EXIT_FAILURE);

+ break;

+ }

+ }

+

+ print_banner();

+ if (argc - optind != 2)

+ {

+ print_usage();

+ exit(EXIT_FAILURE);

+ }

+

+

+ if (flex_download_program(argv[optind], argv[optind + 1]) != 0)

+ {

+ if (!quiet)

+ printf("Code NOT downloaded to the FPGA\n\n");

+ }

+ else

+ {

+ if (!quiet)

+ printf("Code successfully downloaded to the FPGA\n\n");

+ }

+

+ return EXIT_SUCCESS;

+}

+

+

+

+/***************************************************************************

+ main.h - Main program

+ ---------------------

+

+ begin : Mon Nov 24 2003

+ copyright : (C) 2003 by Aurelien Jarno

+ emails : aurelien@aurel32.net

+ ***************************************************************************/

+

+/***************************************************************************

+ * *

+ * This program is free software; you can redistribute it and/or modify *

+ * it under the terms of the GNU General Public License as published by *

+ * the Free Software Foundation; either version 2 of the License, or *

+ * (at your option) any later version. *

+ * *

+ ***************************************************************************/

+

+#ifndef MAIN_H

+#define MAIN_H

+

+#ifdef HAVE_CONFIG_H

+ #include <config.h>

+#endif

+

+/* Variables */

+extern int debug;

+extern int quiet;

+

+#endif