Initial revision
diff --git a/tools/envcrc.c b/tools/envcrc.c
new file mode 100644
index 0000000..c59f7d5
--- /dev/null
+++ b/tools/envcrc.c
@@ -0,0 +1,80 @@
+/*
+ * (C) Copyright 2001
+ * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define __ASSEMBLY__ /* Dirty trick to get only #defines */
+#include <config.h>
+#undef __ASSEMBLY__
+
+#if defined(CFG_ENV_IS_IN_FLASH)
+# ifndef CFG_ENV_ADDR
+# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
+# endif
+# ifndef CFG_ENV_OFFSET
+# define CFG_ENV_OFFSET (CFG_ENV_ADDR - CFG_FLASH_BASE)
+# endif
+# ifndef CFG_ENV_SIZE
+# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
+# endif
+# if ((CFG_ENV_ADDR >= CFG_MONITOR_BASE) && \
+ ((CFG_ENV_ADDR+CFG_ENV_SIZE) <= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)))
+# define ENV_IS_EMBEDDED
+# endif
+#endif /* CFG_ENV_IS_IN_FLASH */
+
+extern unsigned long crc32 (unsigned long, const unsigned char *, unsigned int);
+
+#ifdef ENV_IS_EMBEDDED
+extern unsigned int env_size;
+extern unsigned char environment;
+#endif /* ENV_IS_EMBEDDED */
+
+int main (int argc, char **argv)
+{
+#ifdef ENV_IS_EMBEDDED
+ int crc ;
+ unsigned char *envptr = &environment,
+ *dataptr = envptr + sizeof(unsigned int) + 1;
+ unsigned int datasize = env_size - (dataptr - envptr) ;
+
+
+ crc = crc32(0, dataptr, datasize) ;
+
+ /* Check if verbose mode is activated passing a parameter to the program */
+ if (argc > 1) {
+ printf("CRC32 from offset %08X to %08X of environment = %08X\n",
+ (unsigned int)(dataptr - envptr),
+ (unsigned int)(dataptr - envptr) + datasize,
+ crc);
+ } else {
+ printf("0x%08X\n", crc);
+ }
+#else
+ printf("0\n");
+#endif
+ return EXIT_SUCCESS;
+}
+
