diff options
author | Patrick Rudolph <siro@das-labor.org> | 2017-03-01 19:43:14 +0100 |
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committer | Patrick Georgi <pgeorgi@google.com> | 2018-05-15 11:20:30 +0000 |
commit | 9d22172558b802d7ed45bfc37496acf73dcc281d (patch) | |
tree | 6d33317940d4f445d4e857f80e79c5ec964c2a63 /payloads/libpayload/drivers/i8042/keyboard.c | |
parent | e6a3821b97bdbe817646f3b151ace7d4471c2fab (diff) | |
download | coreboot-9d22172558b802d7ed45bfc37496acf73dcc281d.tar.xz |
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/keyboard.c')
-rw-r--r-- | payloads/libpayload/drivers/i8042/keyboard.c | 334 |
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(); +} |