Store all configuration in a linked list, read config from INI file and EFI shell

xtldr2/globals.c

@@ -9,12 +9,18 @@
 #include <xtldr.h>
 
 
-/* XT Boot Loader configuration data */
-XTBL_CONFIGURATION BlpConfiguration = {0};
+/* XT Boot Loader configuration list */
+PLIST_ENTRY BlpConfig = NULL;
+
+/* XT Boot Loader debug port configuration */
+ULONG BlpDebugPort = 0;
 
 /* XT Boot Loader hex table */
 STATIC PUINT16 BlpHexTable = L"0123456789ABCDEF";
 
+/* XT Boot Loader menu list */
+PLIST_ENTRY BlpMenuList = NULL;
+
 /* Serial port configuration */
 CPPORT BlpSerialPort;