lm32: add function declarations for ps2_*

diff --git a/umon_ports/milkymist/cpuio.c b/umon_ports/milkymist/cpuio.c
index 71cd47f..b0f5c11 100644 (file)
--- a/umon_ports/milkymist/cpuio.c
+++ b/umon_ports/milkymist/cpuio.c
@@ -13,6 +13,10 @@
 #include "lm32.h"
 #include "ps2_kbd.h"
 
+extern int ps2_kbd_init();
+extern uchar ps2_getchar();
+extern ulong ps2_gotachar();
+
 /* devInit():
  * As a bare minimum, initialize the console UART here using the
  * incoming 'baud' value as the baud rate.