Initial commit for the firmware. Used the 20090306_ela version as baseline.

It is identical to the popular 20081211, with the doob addition (20090301), a
linux client, and two additional commands for LF analysis. Let me know if
you find issues here!

armsrc/util.c

@@ -0,0 +1,53 @@
+//-----------------------------------------------------------------------------
+// Utility functions used in many places, not specific to any piece of code.
+// Jonathan Westhues, Sept 2005
+//-----------------------------------------------------------------------------
+#include <proxmark3.h>
+#include "apps.h"
+
+void *memcpy(void *dest, const void *src, int len)
+{
+	BYTE *d = dest;
+	const BYTE *s = src;
+	while((len--) > 0) {
+		*d = *s;
+		d++;
+		s++;
+	}
+	return dest;
+}
+
+void *memset(void *dest, int c, int len)
+{
+	BYTE *d = dest;
+	while((len--) > 0) {
+		*d = c;
+		d++;
+	}
+	return dest;
+}
+
+int memcmp(const void *av, const void *bv, int len)
+{
+	const BYTE *a = av;
+	const BYTE *b = bv;
+
+	while((len--) > 0) {
+		if(*a != *b) {
+			return *a - *b;
+		}
+		a++;
+		b++;
+	}
+	return 0;
+}
+
+int strlen(char *str)
+{
+	int l = 0;
+	while(*str) {
+		l++;
+		str++;
+	}
+	return l;
+}