Furquan Shaikh has uploaded this change for review.
payloads/libpayload/drivers/i8042: Add macros for i8042 commands
This change adds macros for commands (written to 0x64) and keyboard
commands (written to 0x60) for 8042 controller.
BUG=b:110024487
Change-Id: I74b2388d048e35b5bdf5bd862d0975e88f1bd6af
Signed-off-by: Furquan Shaikh <furquan@google.com>
---
M payloads/libpayload/drivers/i8042/i8042.c
A payloads/libpayload/drivers/i8042/i8042.h
M payloads/libpayload/drivers/i8042/keyboard.c
3 files changed, 87 insertions(+), 14 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/89/27289/1
diff --git a/payloads/libpayload/drivers/i8042/i8042.c b/payloads/libpayload/drivers/i8042/i8042.c
index b679448..69740d9 100644
--- a/payloads/libpayload/drivers/i8042/i8042.c
+++ b/payloads/libpayload/drivers/i8042/i8042.c
@@ -31,6 +31,8 @@
#include <libpayload.h>
#include <stddef.h>
+#include "i8042.h"
+
/* Overflowing FIFO implementation */
struct fifo {
@@ -204,13 +206,13 @@
kbc_init = 1;
/* Disable first device */
- if (i8042_cmd(0xad) != 0) {
+ if (i8042_cmd(I8042_CMD_DIS_KB) != 0) {
kbc_init = 0;
return 0;
}
/* Disable second device */
- if (i8042_cmd(0xa7) != 0) {
+ if (i8042_cmd(I8042_CMD_DIS_AUX) != 0) {
kbc_init = 0;
return 0;
}
@@ -220,17 +222,18 @@
read_data();
/* Self test. */
- if (i8042_cmd_with_response(0xaa) != 0x55) {
+ if (i8042_cmd_with_response(I8042_CMD_SELF_TEST)
+ != I8042_SELF_TEST_RSP) {
kbc_init = 0;
return 0;
}
/* Test secondary port */
- if (i8042_cmd_with_response(0xa9) == 0)
+ if (i8042_cmd_with_response(I8042_CMD_AUX_TEST) == 0)
aux_fifo = fifo_init(4 * 32);
/* Test first PS/2 port */
- if (i8042_cmd_with_response(0xab) == 0)
+ if (i8042_cmd_with_response(I8042_CMD_KB_TEST) == 0)
ps2_fifo = fifo_init(2 * 16);
kbc_init = 0;
diff --git a/payloads/libpayload/drivers/i8042/i8042.h b/payloads/libpayload/drivers/i8042/i8042.h
new file mode 100644
index 0000000..788a134
--- /dev/null
+++ b/payloads/libpayload/drivers/i8042/i8042.h
@@ -0,0 +1,69 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright 2018 Google LLC.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef __DRIVERS_I8042_I8042_H__
+#define __DRIVERS_I8042_I8042_H__
+
+/* Port 0x64 commands */
+#define I8042_CMD_RD_CMD_BYTE 0x20
+#define I8042_CMD_WR_CMD_BYTE 0x60
+#define I8042_CMD_DIS_AUX 0xa7
+#define I8042_CMD_EN_AUX 0xa8
+#define I8042_CMD_AUX_TEST 0xa9
+#define I8042_CMD_SELF_TEST 0xaa
+#define I8042_SELF_TEST_RSP 0x55
+#define I8042_CMD_KB_TEST 0xab
+#define I8042_CMD_DIAG_DUMP 0xac
+#define I8042_CMD_DIS_KB 0xad
+#define I8042_CMD_EN_KB 0xae
+#define I8042_CMD_RD_INPUT_PORT 0xc0
+#define I8042_CMD_RD_OUTPUT_PORT 0xd0
+#define I8042_CMD_WR_OUTPUT_PORT 0xd1
+#define I8042_CMD_RD_TEST_INPUTS 0xe0
+
+/* Port 0x60 keyboard commands */
+#define I8042_KBCMD_SET_MODE_IND 0xed
+#define I8042_MODE_CAPS_LOCK_ON (1 << 2)
+#define I8042_MODE_CAPS_LOCK_OFF (0 << 2)
+#define I8042_MODE_NUM_LOCK_ON (1 << 1)
+#define I8042_MODE_NUM_LOCK_OFF (0 << 1)
+#define I8042_MODE_SCROLL_LOCK_ON (1 << 0)
+#define I8042_MODE_SCROLL_LOCK_OFF (0 << 0)
+#define I8042_KBCMD_SET_SCANCODE 0xf0
+#define I8042_SCANCODE_SET_1 (1)
+#define I8042_SCANCODE_SET_2 (2)
+#define I8042_SCANCODE_SET_3 (3)
+#define I8042_KBCMD_SET_TYPEMATIC 0xf3
+#define I8042_KBCMD_EN 0xf4
+#define I8042_KBCMD_DEFAULT_DIS 0xf5
+#define I8042_KBCMD_SET_DEFAULT 0xf6
+#define I8042_KBCMD_RESEND 0xfe
+#define I8042_KBCMD_RESET 0xff
+
+#endif /* __DRIVERS_I8042_I8042_H__ */
diff --git a/payloads/libpayload/drivers/i8042/keyboard.c b/payloads/libpayload/drivers/i8042/keyboard.c
index af44e01..d5606a3 100644
--- a/payloads/libpayload/drivers/i8042/keyboard.c
+++ b/payloads/libpayload/drivers/i8042/keyboard.c
@@ -32,7 +32,8 @@
#include <libpayload-config.h>
#include <libpayload.h>
-#define I8042_CMD_DIS_KB 0xad
+#include "i8042.h"
+
#define POWER_BUTTON 0x90
struct layout_maps {
@@ -203,12 +204,12 @@
case 0x3a:
if (modifier & KB_MOD_CAPSLOCK) {
modifier &= ~KB_MOD_CAPSLOCK;
- if (keyboard_cmd(0xed))
- keyboard_cmd(0 << 2);
+ if (keyboard_cmd(I8042_KBCMD_SET_MODE_IND))
+ keyboard_cmd(I8042_MODE_CAPS_LOCK_OFF);
} else {
modifier |= KB_MOD_CAPSLOCK;
- if (keyboard_cmd(0xed))
- keyboard_cmd(1 << 2);
+ if (keyboard_cmd(I8042_KBCMD_SET_MODE_IND))
+ keyboard_cmd(I8042_MODE_CAPS_LOCK_ON);
}
break;
}
@@ -304,19 +305,19 @@
keyboard_getchar();
/* Enable first PS/2 port */
- i8042_cmd(0xae);
+ i8042_cmd(I8042_CMD_EN_KB);
/* Set scancode set 1 */
- ret = keyboard_cmd(0xf0);
+ ret = keyboard_cmd(I8042_KBCMD_SET_SCANCODE);
if (!ret)
return;
- ret = keyboard_cmd(0x01);
+ ret = keyboard_cmd(I8042_SCANCODE_SET_1);
if (!ret)
return;
/* Enable scanning */
- ret = keyboard_cmd(0xf4);
+ ret = keyboard_cmd(I8042_KBCMD_EN);
if (!ret)
return;
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