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authorPatrick Rudolph <siro@das-labor.org>2017-03-01 19:43:14 +0100
committerPatrick Georgi <pgeorgi@google.com>2018-05-15 11:20:30 +0000
commit9d22172558b802d7ed45bfc37496acf73dcc281d (patch)
tree6d33317940d4f445d4e857f80e79c5ec964c2a63 /payloads/libpayload/drivers/i8042
parente6a3821b97bdbe817646f3b151ace7d4471c2fab (diff)
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>
Diffstat (limited to 'payloads/libpayload/drivers/i8042')
-rw-r--r--payloads/libpayload/drivers/i8042/keyboard.c334
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();
+}