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authorStefan Reinauer <stefan.reinauer@coreboot.org>2012-04-27 02:31:28 +0200
committerStefan Reinauer <stefan.reinauer@coreboot.org>2012-04-27 19:23:16 +0200
commitae5e11d7cd7484343d277fb454fb19fdff34730d (patch)
tree231aede3dcf80242a4e68e2b4268835f4bf1c5c6 /src/pc80/keyboard.c
parentaee1869fcf6c5eb1616f8c5c5a446c2b2de693e8 (diff)
Move top level pc80 directory to drivers/
There is no reason for this to be a top level directory. Some stuff from lib/ should also be moved to drivers/ Change-Id: I3c2d2e127f7215eadead029cfc7442c22b26814a Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/939 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/pc80/keyboard.c')
-rw-r--r--src/pc80/keyboard.c306
1 files changed, 0 insertions, 306 deletions
diff --git a/src/pc80/keyboard.c b/src/pc80/keyboard.c
deleted file mode 100644
index e0a6643334..0000000000
--- a/src/pc80/keyboard.c
+++ /dev/null
@@ -1,306 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2009 coresystems GmbH
- * Copyright (C) 2008 Advanced Micro Devices, Inc.
- * Copyright (C) 2003 Ollie Lo <ollielo@hotmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-
-#include <console/console.h>
-#include <pc80/keyboard.h>
-#include <device/device.h>
-#include <arch/io.h>
-#include <delay.h>
-
-#define KBD_DATA 0x60
-#define KBD_COMMAND 0x64
-#define KBD_STATUS 0x64
-#define KBD_IBF (1 << 1) // 1: input buffer full (data ready for ec)
-#define KBD_OBF (1 << 0) // 1: output buffer full (data ready for host)
-
-// Keyboard Controller Commands
-#define KBC_CMD_READ_COMMAND 0x20 // Read command byte
-#define KBC_CMD_WRITE_COMMAND 0x60 // Write command byte
-#define KBC_CMD_SELF_TEST 0xAA // Controller self-test
-#define KBC_CMD_KBD_TEST 0xAB // Keyboard Interface test
-
-/* The Keyboard controller command byte
- * BIT | Description
- * ----+-------------------------------------------------------
- * 7 | reserved, must be zero
- * 6 | XT Translation, (1 = on, 0 = off)
- * 5 | Disable Mouse Port (1 = disable, 0 = enable)
- * 4 | Disable Keyboard Port (1 = disable, 0 = enable)
- * 3 | reserved, must be zero
- * 2 | System Flag (1 = self-test passed. DO NOT SET TO ZERO)
- * 1 | Mouse Port Interrupts (1 = enable, 0 = disable)
- * 0 | Keyboard Port Interrupts (1 = enable, 0 = disable)
- */
-
-// Keyboard Controller Replies
-#define KBC_REPLY_SELFTEST_OK 0x55 // controller self-test succeeded
-
-//
-// Keyboard Replies
-//
-#define KBD_REPLY_POR 0xAA // Power on reset
-#define KBD_REPLY_ACK 0xFA // Command ACK
-#define KBD_REPLY_RESEND 0xFE // Command NACK, send command again
-
-/* Wait 400ms for keyboard controller answers */
-#define KBC_TIMEOUT_IN_MS 400
-
-static int kbc_input_buffer_empty(void)
-{
- u32 timeout;
- for(timeout = KBC_TIMEOUT_IN_MS; timeout && (inb(KBD_STATUS) & KBD_IBF); timeout--) {
- mdelay(1);
- }
-
- if (!timeout) {
- printk(BIOS_WARNING, "Unexpected Keyboard controller input buffer full\n");
- }
- return !!timeout;
-}
-
-
-static int kbc_output_buffer_full(void)
-{
- u32 timeout;
- for(timeout = KBC_TIMEOUT_IN_MS; timeout && ((inb(KBD_STATUS) & KBD_OBF) == 0); timeout--) {
- mdelay(1);
- }
-
- if (!timeout) {
- printk(BIOS_INFO, "Keyboard controller output buffer result timeout\n");
- }
- return !!timeout;
-}
-
-
-static int kbc_cleanup_buffers(void)
-{
- u32 timeout;
- for(timeout = KBC_TIMEOUT_IN_MS; timeout && (inb(KBD_STATUS) & (KBD_OBF | KBD_IBF)); timeout--) {
- mdelay(1);
- inb(KBD_DATA);
- }
-
- if (!timeout) {
- printk(BIOS_ERR, "Couldn't cleanup the keyboard controller buffers\n");
- printk(BIOS_ERR, "Status (0x%x): 0x%x, Buffer (0x%x): 0x%x\n",
- KBD_STATUS, inb(KBD_STATUS), KBD_DATA, inb(KBD_DATA));
- }
-
- return !!timeout;
-}
-
-static int kbc_self_test(void)
-{
- u8 self_test;
-
- /* Clean up any junk that might have been in the KBC.
- * Both input and output buffers must be empty.
- */
- if (!kbc_cleanup_buffers())
- return 0;
-
- /* reset/self test 8042 - send cmd 0xAA */
- outb(KBC_CMD_SELF_TEST, KBD_COMMAND);
-
- if (!kbc_output_buffer_full()) {
- /* There probably is no keyboard controller. */
- printk(BIOS_ERR, "Could not reset keyboard controller.\n");
- return 0;
- }
-
- /* read self-test result, 0x55 is returned in the output buffer */
- self_test = inb(KBD_DATA);
-
- if (self_test != 0x55) {
- printk(BIOS_ERR, "Keyboard Controller self-test failed: 0x%x\n",
- self_test);
- return 0;
- }
-
- /* ensure the buffers are empty */
- kbc_cleanup_buffers();
-
- /* keyboard interface test */
- outb(KBC_CMD_KBD_TEST, KBD_COMMAND);
-
- if (!kbc_output_buffer_full()) {
- printk(BIOS_ERR, "Keyboard Interface test timed out.\n");
- return 0;
- }
-
- /* read test result, 0x00 should be returned in case of no failures */
- self_test = inb(KBD_DATA);
-
- if (self_test != 0x00) {
- printk(BIOS_ERR, "Keyboard Interface test failed: 0x%x\n",
- self_test);
- return 0;
- }
-
- return 1;
-}
-
-static u8 send_keyboard(u8 command)
-{
- u8 regval = 0;
- u8 resend = 10;
-
- do {
- if (!kbc_input_buffer_empty()) return 0;
- outb(command, KBD_DATA);
- /* the reset command takes much longer then normal commands and
- * even worse, some keyboards do send the ACK _after_ doing the
- * reset */
- if (command == 0xFF) {
- u8 retries;
- for (retries = 9; retries && !kbc_output_buffer_full(); retries--)
- ;
- }
- if (!kbc_output_buffer_full()) {
- printk(BIOS_ERR, "Could not send keyboard command %02x\n",
- command);
- return 0;
- }
- regval = inb(KBD_DATA);
- --resend;
- } while (regval == KBD_REPLY_RESEND && resend > 0);
-
- return regval;
-}
-
-void pc_keyboard_init(struct pc_keyboard *keyboard)
-{
- u8 retries;
- u8 regval;
- if (!CONFIG_DRIVERS_PS2_KEYBOARD)
- return;
- printk(BIOS_DEBUG, "Keyboard init...\n");
-
- /* Run a keyboard controller self-test */
- if (!kbc_self_test())
- return;
-
- /* Enable keyboard interface - No IRQ */
- if (!kbc_input_buffer_empty()) return;
- outb(0x60, KBD_COMMAND);
- if (!kbc_input_buffer_empty()) return;
- outb(0x20, KBD_DATA); /* send cmd: enable keyboard */
- if (!kbc_input_buffer_empty()) {
- printk(BIOS_INFO, "Timeout while enabling keyboard\n");
- return;
- }
-
- /* clean up any junk that might have been in the keyboard */
- if (!kbc_cleanup_buffers()) return;
-
- /* reset keyboard and self test (keyboard side) */
- regval = send_keyboard(0xFF);
- if (regval == KBD_REPLY_RESEND) {
- /* keeps sending RESENDs, probably no keyboard. */
- printk(BIOS_INFO, "No PS/2 keyboard detected.\n");
- return;
- }
-
- if (regval != KBD_REPLY_ACK) {
- printk(BIOS_ERR, "Keyboard reset failed ACK: 0x%x\n", regval);
- return;
- }
-
- /* the reset command takes some time, so wait a little longer */
- for (retries = 9; retries && !kbc_output_buffer_full(); retries--)
- ;
-
- if (!kbc_output_buffer_full()) {
- printk(BIOS_ERR, "Timeout waiting for keyboard after reset.\n");
- return;
- }
-
- regval = inb(KBD_DATA);
- if (regval != 0xAA) {
- printk(BIOS_ERR, "Keyboard reset selftest failed: 0x%x\n", regval);
- return;
- }
-
- /*
- * The following set scancode stuff is what normal BIOS do. It could be
- * argued that coreboot shouldn't set the scan code.....
- */
-
- /* disable the keyboard */
- regval = send_keyboard(0xF5);
- if (regval != KBD_REPLY_ACK) {
- printk(BIOS_ERR, "Keyboard disable failed ACK: 0x%x\n", regval);
- return;
- }
-
- /* Set scancode command */
- regval = send_keyboard(0xF0);
- if (regval != KBD_REPLY_ACK) {
- printk(BIOS_ERR, "Keyboard set scancode cmd failed ACK: 0x%x\n", regval);
- return;
- }
- /* Set scancode mode 2 */
- regval = send_keyboard(0x02);
- if (regval != KBD_REPLY_ACK) {
- printk(BIOS_ERR, "Keyboard set scancode mode failed ACK: 0x%x\n", regval);
- return;
- }
-
- /* All is well - enable keyboard interface */
- if (!kbc_input_buffer_empty()) return;
- outb(0x60, KBD_COMMAND);
- if (!kbc_input_buffer_empty()) return;
- outb(0x65, KBD_DATA); /* send cmd: enable keyboard and IRQ 1 */
- if (!kbc_input_buffer_empty()) {
- printk(BIOS_ERR, "Timeout during keyboard enable\n");
- return;
- }
-
- /* enable the keyboard */
- regval = send_keyboard(0xF4);
- if (regval != KBD_REPLY_ACK) {
- printk(BIOS_ERR, "Keyboard enable failed ACK: 0x%x\n", regval);
- return;
- }
-}
-
-/*
- * Support PS/2 mode - oddball SIOs(KBC) need this setup
- * Not well documented. Google - 0xcb keyboard controller
- * This is called before pc_keyboard_init().
- */
-void set_kbc_ps2_mode(void)
-{
- /* Run a keyboard controller self-test */
- if (!kbc_self_test())
- return;
-
- /* Support PS/2 mode */
- if (!kbc_input_buffer_empty()) return;
- outb(0xcb, KBD_COMMAND);
-
- if (!kbc_input_buffer_empty()) return;
- outb(0x01, KBD_DATA);
-
- kbc_cleanup_buffers();
-}