stos: Handle pre BPAL kernel knots

Signed-off-by: Chloe M. <chloe@mensia.org>

paw/stos/ke/knot.c

@@ -7,6 +7,7 @@
  */
 
 #include <drivers/bootvid/fbio.h>
+#include <ke/bpal.h>
 #include <ex/trace.h>
 #include <ke/knot.h>
 
@@ -18,7 +19,8 @@
 /* Reason lookup table */
 static const CHAR *ReasonTable[] = {
     [KNOT_MISC] = "unspecified reason",
-    [KNOT_UNBOUND_RSRC] = "unbounded resource"
+    [KNOT_UNBOUND_RSRC] = "unbounded resource",
+    [KNOT_BAD_BOOT_PROTO] = "bad boot protocol"
 };
 
 /* Globals */
@@ -40,7 +42,10 @@ KiKnot(KNOT_REASON Reason, const CHAR *Fmt, ...)
 {
     va_start(Ap, Fmt);
     FmtPrintf(KnotBuf, sizeof(KnotBuf), Fmt, Ap);
-    BootVidInitCons(&KnotAttr);
+
+    if (KeBpalIsInit()) {
+        BootVidInitCons(&KnotAttr);
+    }
 
     TRACE("\033[H\033[2J");
     TRACE(KnotMessage);