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-rw-r--r--ubi-utils/src/ubicrc32/ubicrc32.c143
1 files changed, 143 insertions, 0 deletions
diff --git a/ubi-utils/src/ubicrc32/ubicrc32.c b/ubi-utils/src/ubicrc32/ubicrc32.c
new file mode 100644
index 0000000..fb4ef49
--- /dev/null
+++ b/ubi-utils/src/ubicrc32/ubicrc32.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) International Business Machines Corp., 2006
+ *
+ * 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.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Author: Oliver Lohmann
+ *
+ * Calculate CRC32 with UBI start value for a given binary image.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <argp.h>
+#include <unistd.h>
+#include <errno.h>
+#include <mtd/ubi-header.h>
+
+#include "config.h"
+#include "crc32.h"
+
+#define BUFSIZE 4096
+
+const char *argp_program_version = PACKAGE_VERSION;
+const char *argp_program_bug_address = PACKAGE_BUGREPORT;
+static char doc[] = "\nVersion: " PACKAGE_VERSION "\n\tBuilt on "
+ BUILD_CPU" "BUILD_OS" at "__DATE__" "__TIME__"\n"
+ "\n"
+ "ubicrc32 - calculates the UBI CRC32 value and prints it to stdout.\n";
+
+static const char copyright [] __attribute__((unused)) =
+ "FIXME: insert license type"; /* FIXME */
+
+
+static struct argp_option options[] = {
+ { name: "copyright", key: 'c', arg: NULL, flags: 0,
+ doc: "Print copyright information.",
+ group: 1 },
+
+ { name: NULL, key: 0, arg: NULL, flags: 0, doc: NULL, group: 0 },
+};
+
+typedef struct myargs {
+ FILE* fp_in;
+
+ char *arg1;
+ char **options; /* [STRING...] */
+} myargs;
+
+static error_t
+parse_opt(int key, char *arg, struct argp_state *state)
+{
+ int err = 0;
+
+ myargs *args = state->input;
+
+ switch (key) {
+ case 'c':
+ fprintf(stderr, "%s\n", copyright);
+ exit(0);
+ break;
+ case ARGP_KEY_ARG:
+ args->fp_in = fopen(arg, "rb");
+ if ((args->fp_in) == NULL) {
+ fprintf(stderr,
+ "Cannot open file %s for input\n", arg);
+ exit(1);
+ }
+ args->arg1 = arg;
+ args->options = &state->argv[state->next];
+ state->next = state->argc;
+ break;
+ case ARGP_KEY_END:
+ if (err) {
+ fprintf(stderr, "\n");
+ argp_usage(state);
+ exit(1);
+ }
+ break;
+ default:
+ return(ARGP_ERR_UNKNOWN);
+ }
+
+ return 0;
+}
+
+static struct argp argp = {
+ options: options,
+ parser: parse_opt,
+ args_doc: "[file]",
+ doc: doc,
+ children: NULL,
+ help_filter: NULL,
+ argp_domain: NULL,
+};
+
+int
+main(int argc, char **argv) {
+ int rc = 0;
+ uint32_t crc32_table[256];
+ uint8_t buf[BUFSIZE];
+ size_t read;
+ uint32_t crc32;
+
+ myargs args = {
+ .fp_in = stdin,
+ .arg1 = NULL,
+ .options = NULL,
+ };
+
+ argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, &args);
+
+ init_crc32_table(crc32_table);
+ crc32 = UBI_CRC32_INIT;
+ while (!feof(args.fp_in)) {
+ read = fread(buf, 1, BUFSIZE, args.fp_in);
+ if (ferror(args.fp_in)) {
+ fprintf(stderr, "I/O Error.");
+ exit(EXIT_FAILURE);
+ }
+ crc32 = clc_crc32(crc32_table, crc32, buf, read);
+ }
+
+ if (args.fp_in != stdin) {
+ fclose(args.fp_in);
+ }
+
+ fprintf(stdout, "0x%08x\n", crc32);
+ return rc;
+}