From fe57bb19b0d253e4ea91d1947c3db0dd504a64aa Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Wed, 18 Sep 2002 13:23:15 +0000
Subject: Initial revision

---
 tools/envcrc.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 tools/envcrc.c

(limited to 'tools')

diff --git a/tools/envcrc.c b/tools/envcrc.c
new file mode 100644
index 0000000000..c59f7d51d9
--- /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;
+}
+
-- 
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