From 2f82430b488878d321276e6efb10c61042ca2930 Mon Sep 17 00:00:00 2001
From: aqua <aqua@iserlohn-fortress.net>
Date: Tue, 1 Nov 2022 21:18:17 +0200
Subject: Enable interrupts after enabling the PIC

---
 devices/pic.h          |  1 +
 devices/pic_8259.c     | 11 +++++++++++
 devices/ps2_keyboard.c |  9 +++++++++
 devices/vga.c          |  4 ++--
 4 files changed, 23 insertions(+), 2 deletions(-)

(limited to 'devices')

diff --git a/devices/pic.h b/devices/pic.h
index 685a85b..c545c60 100644
--- a/devices/pic.h
+++ b/devices/pic.h
@@ -1,4 +1,5 @@
 #pragma once
 
 void pic_init();
+void pic_enable();
 void pic_clear(unsigned char irq);
diff --git a/devices/pic_8259.c b/devices/pic_8259.c
index 74c576a..62164d3 100644
--- a/devices/pic_8259.c
+++ b/devices/pic_8259.c
@@ -1,4 +1,5 @@
 #include "pic.h"
+#include <sys/control.h>
 #include <sys/io.h>
 
 #define PIC1 0x20
@@ -27,9 +28,19 @@ pic_init()
   outb(ICW4_8086, PIC1 + DATA);
   outb(ICW4_8086, PIC2 + DATA);
 
+  // PIC masks
+  outb(0xff, PIC1 + DATA);
+  outb(0xff, PIC2 + DATA);
+}
+
+void
+pic_enable()
+{
   // PIC masks
   outb(0xfc, PIC1 + DATA);
   outb(0xff, PIC2 + DATA);
+
+  enable_interrupts();
 }
 
 void
diff --git a/devices/ps2_keyboard.c b/devices/ps2_keyboard.c
index e5af423..4ebcc65 100644
--- a/devices/ps2_keyboard.c
+++ b/devices/ps2_keyboard.c
@@ -1,4 +1,5 @@
 #include "ps2_keyboard.h"
+#include "vga.h"
 #include <stdint.h>
 #include <stdio.h>
 #include <sys/io.h>
@@ -50,6 +51,14 @@ ps2_keyboard_irq_handler()
   case 0xb6: // right shift up
     shift_case = 0;
     return;
+
+  case 0x5b: // left meta
+  case 0x5c: // right meta
+    return;
+
+  case 0x58: // F12
+    vga_clear(VGA_COLOR_LIGHT_BLUE, VGA_COLOR_LIGHT_GREY);
+    return;
   }
 
   if (key >= 0x80) return;
diff --git a/devices/vga.c b/devices/vga.c
index 908bd5e..93231ea 100644
--- a/devices/vga.c
+++ b/devices/vga.c
@@ -20,7 +20,7 @@ void
 vga_init()
 {
   buffer = (struct VGAEntry *)0xc03ff000;
-  // vga_enable_cursor(0, 15);
+  vga_enable_cursor(0, 15);
   vga_clear(VGA_COLOR_LIGHT_BLUE, VGA_COLOR_LIGHT_GREY);
 }
 
@@ -35,7 +35,7 @@ vga_clear(enum vga_color foreground, enum vga_color background)
       buffer[index].background = background;
     }
   col = row = 0;
-  // vga_update_cursor();
+  vga_update_cursor();
 }
 
 void
-- 
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