Add ps2 keyboard initialization.

Which also requires that we properly initialize the i8259 (ISA)
interrupt controller.

1 files changed, 71 insertions, 0 deletions

diff --git a/ps2port.h b/ps2port.h
new file mode 100644
index 0000000..b5f5419
--- /dev/null
+++ b/ps2port.h
@@ -0,0 +1,71 @@
+/* Basic ps2 port (keyboard/mouse) command handling.
+
+   This file is copied (mostly) intact from SeaBIOS.
+   It is covered by the GNU Lesser General Public License, v3.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program; see the file COPYING.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef PS2PORT_H
+#define PS2PORT_H
+
+typedef uint8_t u8;
+
+// Standard commands.
+#define I8042_CMD_CTL_RCTR      0x0120
+#define I8042_CMD_CTL_WCTR      0x1060
+#define I8042_CMD_CTL_TEST      0x01aa
+
+#define I8042_CMD_KBD_TEST      0x01ab
+#define I8042_CMD_KBD_DISABLE   0x00ad
+#define I8042_CMD_KBD_ENABLE    0x00ae
+
+#define I8042_CMD_AUX_DISABLE   0x00a7
+#define I8042_CMD_AUX_ENABLE    0x00a8
+#define I8042_CMD_AUX_SEND      0x10d4
+
+// Keyboard commands
+#define ATKBD_CMD_SETLEDS       0x10ed
+#define ATKBD_CMD_SSCANSET      0x10f0
+#define ATKBD_CMD_GETID         0x02f2
+#define ATKBD_CMD_ENABLE        0x00f4
+#define ATKBD_CMD_RESET_DIS     0x00f5
+#define ATKBD_CMD_RESET_BAT     0x02ff
+
+// Mouse commands
+#define PSMOUSE_CMD_SETSCALE11  0x00e6
+#define PSMOUSE_CMD_SETSCALE21  0x00e7
+#define PSMOUSE_CMD_SETRES      0x10e8
+#define PSMOUSE_CMD_GETINFO     0x03e9
+#define PSMOUSE_CMD_GETID       0x02f2
+#define PSMOUSE_CMD_SETRATE     0x10f3
+#define PSMOUSE_CMD_ENABLE      0x00f4
+#define PSMOUSE_CMD_DISABLE     0x00f5
+#define PSMOUSE_CMD_RESET_BAT   0x02ff
+
+// Status register bits.
+#define I8042_STR_PARITY        0x80
+#define I8042_STR_TIMEOUT       0x40
+#define I8042_STR_AUXDATA       0x20
+#define I8042_STR_KEYLOCK       0x10
+#define I8042_STR_CMDDAT        0x08
+#define I8042_STR_MUXERR        0x04
+#define I8042_STR_IBF           0x02
+#define I8042_STR_OBF           0x01
+
+// Control register bits.
+#define I8042_CTR_KBDINT        0x01
+#define I8042_CTR_AUXINT        0x02
+#define I8042_CTR_IGNKEYLOCK    0x08
+#define I8042_CTR_KBDDIS        0x10
+#define I8042_CTR_AUXDIS        0x20
+#define I8042_CTR_XLATE         0x40
+
+// functions
+void i8042_reboot(void);
+int ps2_kbd_command(int command, u8 *param);
+int ps2_mouse_command(int command, u8 *param);
+void ps2port_setup(void);
+
+#endif // ps2port.h