+/*
+ * © 2017 Aaron Taylor <ataylor at subgeniuskitty dot com>
+ * See LICENSE.txt file for copyright and license details.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <unistd.h>
+
+#define VER_MAJOR 1
+#define VER_MINOR 0
+
+void print_usage( char ** argv ) {
+ printf( "PDP-11 Serial Loader %d.%d (www.subgeniuskitty.com)\n"
+ "Usage: %s [option] ...\n"
+ "Options:\n"
+ " -h Help (prints this message)\n"
+ " -i <string> Path to input file (raw binary image)\n"
+ " -o <string> Path to serial port (/dev/cuau0 for first port on FreeBSD)\n"
+ , VER_MAJOR, VER_MINOR, argv[0]
+ );
+}
+
+int main( int argc, char ** argv ) {
+ /*
+ * Variable declarations
+ */
+ int serial_fd;
+ FILE * binary_fd;
+ uint16_t bytes = 0;
+ struct termios options;
+ char * device, * binary_file;
+
+ /*
+ * Process command line arguments
+ */
+ int c;
+ while((c = getopt(argc,argv,"hi:o:")) != -1) {
+ switch(c) {
+ case 'h':
+ print_usage(argv);
+ exit(EXIT_SUCCESS);
+ break;
+ case 'i':
+ binary_file = optarg;
+ break;
+ case 'o':
+ device = optarg;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /*
+ * Process the binary image file
+ */
+ if((binary_fd = fopen(binary_file,"r")) < 0) {
+ fprintf(stderr, "Failed to open %s\n", binary_file);
+ exit(EXIT_FAILURE);
+ }
+
+ fseek(binary_fd, 0L, SEEK_END);
+ bytes = (uint16_t) ftell(binary_fd);
+ rewind(binary_fd);
+
+ uint16_t * buffer = malloc(bytes);
+ fread(buffer, 1, bytes, binary_fd);
+ fclose(binary_fd);
+
+ /*
+ * Open and configure the serial port
+ */
+ if((serial_fd = open(device, O_RDWR | O_NOCTTY)) < 0) {
+ fprintf(stderr, "Failed to open %s\n", device);
+ exit(EXIT_FAILURE);
+ }
+
+ tcgetattr(serial_fd, &options);
+
+ options.c_cflag &= ~CSIZE; /* Mask the character size bits */
+ options.c_cflag |= CS8; /* Select 8 data bits */
+ options.c_cflag &= ~PARENB; /* Select no parity */
+ options.c_cflag &= ~CSTOPB; /* Select 1 stop bit */
+ options.c_oflag &= ~OPOST; /* Select raw output */
+ options.c_cflag |= CLOCAL; /* CLOCAL -> Succeed on open() even w/o connection */
+ options.c_cflag |= CREAD; /* CREAD -> Enable receiver */
+
+ tcsetattr(serial_fd, TCSANOW, &options); /* TCSANOW -> The change occurs immediately */
+
+ cfsetspeed(&options, B9600);
+
+ /*
+ * Sanity check with user
+ */
+ uint16_t checksum = 0;
+ uint16_t words = bytes / 2;
+ for(int i = 0; i < words; i++) checksum += buffer[i];
+ printf("Checksum: %o\n", checksum);
+ printf("Bytes (for R1): %o\n", bytes);
+ printf("Press ENTER to begin transmission.");
+ int k;
+ if((k = getchar()) != 012) { /* Only continue on ENTER (LF -> 012) */
+ close(serial_fd);
+ exit(EXIT_FAILURE);
+ }
+
+ /*
+ * Begin transfer
+ */
+ write(serial_fd, buffer, bytes);
+
+ /*
+ * Clean up and GTFO
+ */
+ free(buffer);
+ close(serial_fd);
+
+ exit(EXIT_SUCCESS);
+}
projects / pdp11-bin2pdp / commitdiff