parisc: USB keyboard not yet functional in boot menu

The USB keyboard will be detected, but USB driver in firmware isn't yet
fully fixed to work correctly on parisc's big-endian hardware....

Signed-off-by: Helge Deller <deller@gmx.de>
diff --git a/src/parisc/parisc.c b/src/parisc/parisc.c
index a7bd22f..0d9168e 100644
--- a/src/parisc/parisc.c
+++ b/src/parisc/parisc.c
@@ -2677,12 +2677,14 @@
     char input[24];
     char *c, reply;
 
-    // snprintf(input, sizeof(input), "BOOT FWSCSI.%d.0", boot_drive->target);
 again:
     print_menu();
 
 again2:
     input[0] = '\0';
+    if (is_64bit_PDC() && HPA_is_LASI_graphics(PAGE0->mem_cons.hpa)) {
+        printf("WARNING: USB Keyboard not yet functional in boot menu with 64-bit firmware!\n");
+    }
     printf("Main Menu: Enter command > ");
     /* ask user for boot menu command */
     enter_text(input, sizeof(input)-1);