Changeset 6ccb238 in mainline

Timestamp:

2006-01-02T17:39:04Z (19 years ago)

Author:

Jakub Vana <jakub.vana@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

95d191c

Parents:

65fb232

Message:

i8042 command word init… It should work on ia32 but I have done it for Indy and I'm not sure it will work because on Silicon should not be the same software in universal microprocesor i8042. So if It will not work I'll remove it and will write i8042 AT function emulation.

File:

• arch/ia32/src/drivers/i8042.c (modified) (2 diffs)

arch/ia32/src/drivers/i8042.c

@@ -49 +49 @@
 #define i8042_STATUS            0x64
 
+
 /** Keyboard commands. */
 #define KBD_ENABLE      0xf4
 #define KBD_DISABLE     0xf5
 #define KBD_ACK         0xfa
+
+/*
+ 60   Write 8042 Command Byte: next data byte written to port 60h is
+      placed in 8042 command register.Format:
+
+     |7|6|5|4|3|2|1|0|8042 Command Byte
+      | | | | | | | `---- 1=enable output register full interrupt
+      | | | | | | `----- should be 0
+      | | | | | `------ 1=set status register system, 0=clear
+      | | | | `------- 1=override keyboard inhibit, 0=allow inhibit
+      | | | `-------- disable keyboard I/O by driving clock line low
+      | | `--------- disable auxiliary device, drives clock line low
+      | `---------- IBM scancode translation 0=AT, 1=PC/XT
+      `----------- reserved, should be 0
+*/
+
+#define i8042_SET_COMMAND 0x60
+#define i8042_COMMAND 0x09
+#define i8042_WAIT_MASK 0x02
+
 
 #define SPECIAL         '?'
@@ -243 +264 @@
 {
         exc_register(VECTOR_KBD, "i8042_interrupt", i8042_interrupt);
+        while (inb(i8042_STATUS)&i8042_WAIT_MASK);     /*Wait*/
+        outb(i8042_STATUS,i8042_SET_COMMAND);
+        while (inb(i8042_STATUS)&i8042_WAIT_MASK);     /*Wait*/
+        outb(i8042_DATA,i8042_COMMAND);
+
         trap_virtual_enable_irqs(1<<IRQ_KBD);
         chardev_initialize("i8042_kbd", &kbrd, &ops);