--- /dev/null
+/*********************************************************************
+ *
+ * ISP (In-System Programming) companion tool for NXP LPC Microcontrollers
+ *
+ * This tool allows user-code computation and CRP protection check for NXP LPC
+ * microcontrollers.
+ *
+ *
+ * Copyright (C) 2012 Nathael Pajani <nathael.pajani@nathael.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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *********************************************************************/
+
+
+#include <stdlib.h> /* malloc, free */
+#include <stdio.h>
+#include <stdint.h>
+
+#include <unistd.h> /* open, getopt, close, usleep */
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <getopt.h>
+
+#include <termios.h> /* for serial config */
+#include <ctype.h>
+
+#include <string.h> /* strncmp, strlen, strdup */
+
+#include "isp_utils.h"
+
+#define PROG_NAME "LPC binary check"
+#define VERSION "1.07"
+
+
+void help(char *prog_name)
+{
+ fprintf(stderr, "---------------- "PROG_NAME" --------------------------------\n");
+ fprintf(stderr, "Usage: %s [options] [prog file name]\n" \
+ " Available options:\n" \
+ " \t -n | --no-user-code : do not compute a valid user code for exception vector 7\n" \
+ " \t -s | --skip-crp-verification : do not perform CRP code verification\n" \
+ " \t -h | --help : display this help\n" \
+ " \t -v | --version : display version information\n", prog_name);
+ fprintf(stderr, "-----------------------------------------------------------------------\n");
+}
+
+int trace_on = 0;
+
+static int calc_user_code = 1; /* User code is computed by default */
+static int check_crp = 1; /* CRP is checked by default */
+
+int main(int argc, char** argv)
+{
+ char* filename = NULL;
+ char* data = NULL;
+ struct stat stat_buffer;
+ int size = 0;
+ uint32_t* v = NULL; /* Used for checksum computing */
+ uint32_t cksum = 0;
+ uint32_t crp = 0;
+ int ret = 0;
+
+ /* parameter parsing */
+ while(1) {
+ int option_index = 0;
+ int c = 0;
+
+ struct option long_options[] = {
+ {"no-user-code", no_argument, 0, 'n'},
+ {"skip-crp-verification", no_argument, 0, 's'},
+ {"help", no_argument, 0, 'h'},
+ {"version", no_argument, 0, 'v'},
+ {0, 0, 0, 0}
+ };
+
+ c = getopt_long(argc, argv, "nshv", long_options, &option_index);
+
+ /* no more options to parse */
+ if (c == -1) break;
+
+ switch (c) {
+ /* n, user-code */
+ case 'n':
+ calc_user_code = 0;
+ break;
+
+ /* s, skip CRP verification */
+ case 's':
+ check_crp = 0;
+ break;
+
+ /* v, version */
+ case 'v':
+ printf("%s Version %s\n", PROG_NAME, VERSION);
+ return 0;
+ break;
+
+ /* h, help */
+ case 'h':
+ default:
+ help(argv[0]);
+ return -1;
+ }
+ }
+
+ /* Parse remaining command line arguments (not options). It should be the binary file name */
+ if ((optind >= argc) || ((argc - optind) != 1)) {
+ printf("Need one (and only one) file name to check.\n");
+ return -1;
+ }
+ filename = argv[optind];
+
+ /* Get information on the file */
+ if (stat(filename, &stat_buffer) == -1) {
+ perror("stat failed");
+ printf("Unable to get informations on file \"%s\"\n", filename);
+ return -2;
+ }
+ /* Allocate a buffer big enougth to get the CRP in it */
+ data = malloc(stat_buffer.st_size);
+ if (data == NULL) {
+ printf("Unable to get a buffer to load the image!\n");
+ return -2;
+ }
+ size = isp_file_to_buff(data, stat_buffer.st_size, filename);
+ if (size <= 0){
+ free(data);
+ return -2;
+ }
+
+ /* And check checksum of first 7 vectors if asked, according to section 21.3.3 of
+ * LPC11xx user's manual (UM10398) */
+ v = (uint32_t *)data;
+ cksum = 0 - v[0] - v[1] - v[2] - v[3] - v[4] - v[5] - v[6];
+ if (calc_user_code == 1) {
+ v[7] = cksum;
+ isp_buff_to_file(data, size, filename);
+ printf("Checksum check done. File updated.\n");
+ } else if (cksum != v[7]) {
+ printf("Checksum is 0x%08x, should be 0x%08x\n", v[7], cksum);
+ ret = -3;
+ }
+
+ if (check_crp == 1) {
+ crp = v[(CRP_OFFSET / 4)];
+ printf("CRP : 0x%08x\n", crp);
+ if ((crp == CRP_NO_ISP) || (crp == CRP_CRP1) || (crp == CRP_CRP2) || (crp == CRP_CRP3)) {
+ printf("CRP : 0x%08x\n", crp);
+ printf("The binary has CRP protection ativated, which violates GPLv3.\n");
+ printf("Check the licence for the software you are about to flash.\n");
+ ret = -4;
+ }
+ }
+
+ free(data);
+ return ret;
+}
+
