libpayload-x86: Move keyboard.c

Move keyboard.c into i8042 folder.

Change-Id: Idd30a9082e48a451d9fe5ead3f3dda4e6396b50c
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/18595
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 334 insertions, 0 deletions

diff --git a/payloads/libpayload/drivers/i8042/keyboard.c b/payloads/libpayload/drivers/i8042/keyboard.c
new file mode 100644
index 0000000000..056aa24957
--- /dev/null
+++ b/payloads/libpayload/drivers/i8042/keyboard.c
@@ -0,0 +1,334 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ *
+ * 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.
+ */
+
+#include <keycodes.h>
+#include <libpayload-config.h>
+#include <libpayload.h>
+
+#define I8042_CMD_DIS_KB     0xad
+#define POWER_BUTTON         0x90
+
+struct layout_maps {
+	const char *country;
+	const unsigned short map[4][0x57];
+};
+
+static struct layout_maps *map;
+
+static struct layout_maps keyboard_layouts[] = {
+#if IS_ENABLED(CONFIG_LP_PC_KEYBOARD_LAYOUT_US)
+{ .country = "us", .map = {
+	{ /* No modifier */
+	 0x00, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
+	 0x37, 0x38, 0x39, 0x30, 0x2D, 0x3D, 0x08, 0x09,
+	 0x71, 0x77, 0x65, 0x72, 0x74, 0x79, 0x75, 0x69,
+	 0x6F, 0x70, 0x5B, 0x5D, 0x0A, 0x00, 0x61, 0x73,
+	 0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x3B,
+	 0x27, 0x60, 0x00, 0x5C, 0x7A, 0x78, 0x63, 0x76,
+	 0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2F, 0x00, 0x2A,
+	 0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
+	 KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
+	 KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
+	 KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00
+	 },
+	{ /* Shift */
+	 0x00, 0x1B, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5E,
+	 0x26, 0x2A, 0x28, 0x29, 0x5F, 0x2B, 0x08, 0x00,
+	 0x51, 0x57, 0x45, 0x52, 0x54, 0x59, 0x55, 0x49,
+	 0x4F, 0x50, 0x7B, 0x7D, 0x0A, 0x00, 0x41, 0x53,
+	 0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x3A,
+	 0x22, 0x7E, 0x00, 0x7C, 0x5A, 0x58, 0x43, 0x56,
+	 0x42, 0x4E, 0x4D, 0x3C, 0x3E, 0x3F, 0x00, 0x2A,
+	 0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
+	 KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
+	 KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
+	 KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00
+	 },
+	{ /* ALT */
+	 0x00, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
+	 0x37, 0x38, 0x39, 0x30, 0x2D, 0x3D, 0x08, 0x09,
+	 0x71, 0x77, 0x65, 0x72, 0x74, 0x79, 0x75, 0x69,
+	 0x6F, 0x70, 0x5B, 0x5D, 0x0A, 0x00, 0x61, 0x73,
+	 0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x3B,
+	 0x27, 0x60, 0x00, 0x5C, 0x7A, 0x78, 0x63, 0x76,
+	 0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2F, 0x00, 0x2A,
+	 0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
+	 KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
+	 KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
+	 KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00
+	 },
+	{ /* Shift-ALT */
+	 0x00, 0x1B, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5E,
+	 0x26, 0x2A, 0x28, 0x29, 0x5F, 0x2B, 0x08, 0x00,
+	 0x51, 0x57, 0x45, 0x52, 0x54, 0x59, 0x55, 0x49,
+	 0x4F, 0x50, 0x7B, 0x7D, 0x0A, 0x00, 0x41, 0x53,
+	 0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x3A,
+	 0x22, 0x7E, 0x00, 0x7C, 0x5A, 0x58, 0x43, 0x56,
+	 0x42, 0x4E, 0x4D, 0x3C, 0x3E, 0x3F, 0x00, 0x2A,
+	 0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
+	 KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
+	 KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
+	 KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00
+	 }
+}},
+#endif
+#if IS_ENABLED(CONFIG_LP_PC_KEYBOARD_LAYOUT_DE)
+{ .country = "de", .map = {
+	{ /* No modifier */
+	 0x00, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
+	 0x37, 0x38, 0x39, 0x30, 0x00, 0x27, 0x08, 0x09,
+	 0x71, 0x77, 0x65, 0x72, 0x74, 0x7A, 0x75, 0x69,
+	 0x6F, 0x70, 0x00, 0x2B, 0x0A, 0x00, 0x61, 0x73,
+	 0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x00,
+	 0x00, 0x5E, 0x00, 0x23, 0x79, 0x78, 0x63, 0x76,
+	 0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2D, 0x00, 0x2A,
+	 0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
+	 KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
+	 KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
+	 KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x3C
+	 },
+	{ /* Shift */
+	 0x00, 0x1B, 0x21, 0x22, 0xA7, 0x24, 0x25, 0x26,
+	 0x2F, 0x28, 0x29, 0x3D, 0x3F, 0x60, 0x08, 0x00,
+	 0x51, 0x57, 0x45, 0x52, 0x54, 0x5A, 0x55, 0x49,
+	 0x4F, 0x50, 0x00, 0x2A, 0x0A, 0x00, 0x41, 0x53,
+	 0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x00,
+	 0x00, 0x7E, 0x00, 0x27, 0x59, 0x58, 0x43, 0x56,
+	 0x42, 0x4E, 0x4D, 0x3B, 0x3A, 0x5F, 0x00, 0x2A,
+	 0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
+	 KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
+	 KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
+	 KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x3E
+	 },
+	{ /* ALT */
+	 0x00, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
+	 0x7B, 0x5B, 0x5D, 0x7D, 0x5C, 0x3D, 0x08, 0x09,
+	 0x40, 0x77, 0x65, 0x72, 0x74, 0x79, 0x75, 0x69,
+	 0x6F, 0x70, 0x5B, 0x7E, 0x0A, 0x00, 0x61, 0x73,
+	 0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x3B,
+	 0x27, 0x60, 0x00, 0x5C, 0x7A, 0x78, 0x63, 0x76,
+	 0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2F, 0x00, 0x2A,
+	 0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
+	 KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
+	 KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
+	 KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x7C
+	 },
+	{ /* Shift-ALT */
+	 /* copied from US */
+	 0x00, 0x1B, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5E,
+	 0x26, 0x2A, 0x28, 0x29, 0x5F, 0x2B, 0x08, 0x00,
+	 0x51, 0x57, 0x45, 0x52, 0x54, 0x59, 0x55, 0x49,
+	 0x4F, 0x50, 0x7B, 0x7D, 0x0A, 0x00, 0x41, 0x53,
+	 0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x3A,
+	 0x22, 0x7E, 0x00, 0x7C, 0x5A, 0x58, 0x43, 0x56,
+	 0x42, 0x4E, 0x4D, 0x3C, 0x3E, 0x3F, 0x00, 0x2A,
+	 0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
+	 KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
+	 KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
+	 KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00
+	 }
+}},
+#endif
+};
+
+#define MOD_SHIFT    (1 << 0)
+#define MOD_CTRL     (1 << 1)
+#define MOD_CAPSLOCK (1 << 2)
+#define MOD_ALT      (1 << 3)
+
+static void keyboard_cmd(unsigned char cmd, unsigned char val)
+{
+	while (inb(0x64) & 2);
+	outb(cmd, 0x60);
+	mdelay(20);
+
+	while (inb(0x64) & 2);
+	outb(val, 0x60);
+	mdelay(20);
+}
+
+int keyboard_havechar(void)
+{
+	unsigned char c = inb(0x64);
+	return (c == 0xFF) ? 0 : c & 1;
+}
+
+unsigned char keyboard_get_scancode(void)
+{
+	unsigned char ch = 0;
+
+	if (keyboard_havechar())
+		ch = inb(0x60);
+
+	return ch;
+}
+
+int keyboard_getchar(void)
+{
+	static int modifier = 0;
+	unsigned char ch;
+	int shift;
+	int ret = 0;
+
+	while (!keyboard_havechar()) ;
+
+	ch = keyboard_get_scancode();
+
+	switch (ch) {
+	case 0x36:
+	case 0x2a:
+		modifier |= MOD_SHIFT;
+		break;
+	case 0x80 | 0x36:
+	case 0x80 | 0x2a:
+		modifier &= ~MOD_SHIFT;
+		break;
+	case 0x38:
+		modifier |= MOD_ALT;
+		break;
+	case 0x80 | 0x38:
+		modifier &= ~MOD_ALT;
+		break;
+	case 0x1d:
+		modifier |= MOD_CTRL;
+		break;
+	case 0x80 | 0x1d:
+		modifier &= ~MOD_CTRL;
+		break;
+	case 0x3a:
+		if (modifier & MOD_CAPSLOCK) {
+			modifier &= ~MOD_CAPSLOCK;
+			keyboard_cmd(0xed, (0 << 2));
+		} else {
+			modifier |= MOD_CAPSLOCK;
+			keyboard_cmd(0xed, (1 << 2));
+		}
+		break;
+	}
+
+	if (!(ch & 0x80) && ch < 0x57) {
+		shift =
+		    (modifier & MOD_SHIFT) ^ (modifier & MOD_CAPSLOCK) ? 1 : 0;
+
+		if (modifier & MOD_ALT)
+			shift += 2;
+
+		ret = map->map[shift][ch];
+
+		if (modifier & MOD_CTRL) {
+			switch (ret) {
+			case 'a' ... 'z':
+				ret &= 0x1f;
+				break;
+			case KEY_DC:
+				/* vulcan nerve pinch */
+				if ((modifier & MOD_ALT) && reset_handler)
+					reset_handler();
+			default:
+				ret = 0;
+			}
+		}
+	}
+
+	if (ch == 0x5e)
+		ret = POWER_BUTTON;
+
+	return ret;
+}
+
+static int keyboard_wait_write(void)
+{
+	int retries = 10000;
+
+	while(retries-- && (inb(0x64) & 0x02))
+		udelay(50);
+
+	return (retries <= 0) ? -1 : 0;
+}
+
+/**
+ * Set keyboard layout
+ * @param country string describing the keyboard layout language.
+ * Valid values are "us", "de".
+ */
+
+int keyboard_set_layout(char *country)
+{
+	int i;
+
+	for (i=0; i<ARRAY_SIZE(keyboard_layouts); i++) {
+		if (strncmp(keyboard_layouts[i].country, country,
+					strlen(keyboard_layouts[i].country)))
+			continue;
+
+		/* Found, changing keyboard layout */
+		map = &keyboard_layouts[i];
+		return 0;
+	}
+
+	/* Nothing found, not changed */
+	return -1;
+}
+
+static struct console_input_driver cons = {
+	.havekey = keyboard_havechar,
+	.getchar = keyboard_getchar
+};
+
+void keyboard_init(void)
+{
+	map = &keyboard_layouts[0];
+
+	/* If 0x64 returns 0xff, then we have no keyboard
+	 * controller */
+	if (inb(0x64) == 0xFF)
+		return;
+
+	console_add_input_driver(&cons);
+}
+
+void keyboard_disconnect(void)
+{
+	/* If 0x64 returns 0xff, then we have no keyboard
+	 * controller */
+	if (inb(0x64) == 0xFF)
+		return;
+
+	/* Empty keyboard buffer */
+	while (keyboard_havechar())
+		keyboard_getchar();
+
+	/* Send keyboard disconnect command */
+	outb(I8042_CMD_DIS_KB, 0x64);
+	keyboard_wait_write();
+
+	/* Hand off with empty buffer */
+	while (keyboard_havechar())
+		keyboard_getchar();
+}