diff options
| -rw-r--r-- | src/arch/x86/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/arch/x86/acpigen_ps2_keybd.c | 297 | ||||
| -rw-r--r-- | src/arch/x86/include/arch/acpigen_ps2_keybd.h | 41 |
3 files changed, 339 insertions, 0 deletions
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc index b28ef78adc..2d007094c7 100644 --- a/src/arch/x86/Makefile.inc +++ b/src/arch/x86/Makefile.inc @@ -235,6 +235,7 @@ ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpigen.c ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpigen_dsm.c ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi_device.c ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi_pld.c +ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpigen_ps2_keybd.c ramstage-$(CONFIG_HAVE_ACPI_RESUME) += acpi_s3.c ramstage-$(CONFIG_ACPI_BERT) += acpi_bert_storage.c ramstage-y += c_start.S diff --git a/src/arch/x86/acpigen_ps2_keybd.c b/src/arch/x86/acpigen_ps2_keybd.c new file mode 100644 index 0000000000..1573de8924 --- /dev/null +++ b/src/arch/x86/acpigen_ps2_keybd.c @@ -0,0 +1,297 @@ +/* + * This file is part of the coreboot project. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include <arch/acpi.h> +#include <arch/acpigen.h> +#include <arch/acpigen_ps2_keybd.h> +#include <console/console.h> +#include <input-event-codes.h> + +#define KEYMAP(scancode, keycode) (((uint32_t)(scancode) << 16) | (keycode & 0xFFFF)) +#define SCANCODE(keymap) ((keymap >> 16) & 0xFFFF) + +/* Possible keymaps for function keys in the top row */ +static const uint32_t function_keymaps[] = { + KEYMAP(0x3b, KEY_F1), + KEYMAP(0x3c, KEY_F2), + KEYMAP(0x3d, KEY_F3), + KEYMAP(0x3e, KEY_F4), + KEYMAP(0x3f, KEY_F5), + KEYMAP(0x40, KEY_F6), + KEYMAP(0x41, KEY_F7), + KEYMAP(0x42, KEY_F8), + KEYMAP(0x43, KEY_F9), + KEYMAP(0x44, KEY_F10), + KEYMAP(0x57, KEY_F11), + KEYMAP(0x58, KEY_F12), + KEYMAP(0x59, KEY_F13), + KEYMAP(0x5a, KEY_F14), + KEYMAP(0x5b, KEY_F15), +}; + +/* + * Possible keymaps for action keys in the top row. This is a superset of + * possible keys. Individual keyboards will have a subset of these keys. + * The scancodes are true / condensed 1 byte scancodes from set-1 + */ +static const uint32_t action_keymaps[] = { + [PS2_KEY_BACK] = KEYMAP(0xea, KEY_BACK), /* e06a */ + [PS2_KEY_FORWARD] = KEYMAP(0xe9, KEY_FORWARD), /* e069 */ + [PS2_KEY_REFRESH] = KEYMAP(0xe7, KEY_REFRESH), /* e067 */ + [PS2_KEY_FULLSCREEN] = KEYMAP(0x91, KEY_FULL_SCREEN), /* e011 */ + [PS2_KEY_OVERVIEW] = KEYMAP(0x92, KEY_SCALE), /* e012 */ + [PS2_KEY_VOL_MUTE] = KEYMAP(0xa0, KEY_MUTE), /* e020 */ + [PS2_KEY_VOL_DOWN] = KEYMAP(0xae, KEY_VOLUMEDOWN), /* e02e */ + [PS2_KEY_VOL_UP] = KEYMAP(0xb0, KEY_VOLUMEUP), /* e030 */ + [PS2_KEY_PLAY_PAUSE] = KEYMAP(0x9a, KEY_PLAYPAUSE), /* e01a */ + [PS2_KEY_NEXT_TRACK] = KEYMAP(0x99, KEY_NEXTSONG), /* e019 */ + [PS2_KEY_PREV_TRACK] = KEYMAP(0x90, KEY_PREVIOUSSONG), /* e010 */ + [PS2_KEY_SNAPSHOT] = KEYMAP(0x93, KEY_SYSRQ), /* e013 */ + [PS2_KEY_BRIGHTNESS_DOWN] = KEYMAP(0x94, KEY_BRIGHTNESSDOWN),/* e014 */ + [PS2_KEY_BRIGHTNESS_UP] = KEYMAP(0x95, KEY_BRIGHTNESSUP), /* e015 */ + [PS2_KEY_KBD_BKLIGHT_DOWN] = KEYMAP(0x97, KEY_KBDILLUMDOWN), /* e017 */ + [PS2_KEY_KBD_BKLIGHT_UP] = KEYMAP(0x98, KEY_KBDILLUMUP), /* e018 */ + [PS2_KEY_PRIVACY_SCRN_TOGGLE] = KEYMAP(0x96, /* e016 */ + KEY_PRIVACY_SCREEN_TOGGLE), +}; + +/* Keymap for numeric keypad keys */ +static uint32_t numeric_keypad_keymaps[] = { + /* Row-0 */ + KEYMAP(0xc9, KEY_PAGEUP), + KEYMAP(0xd1, KEY_PAGEDOWN), + KEYMAP(0xc7, KEY_HOME), + KEYMAP(0xcf, KEY_END), + /* Row-1 */ + KEYMAP(0xd3, KEY_DELETE), + KEYMAP(0xb5, KEY_KPSLASH), + KEYMAP(0x37, KEY_KPASTERISK), + KEYMAP(0x4a, KEY_KPMINUS), + /* Row-2 */ + KEYMAP(0x47, KEY_KP7), + KEYMAP(0x48, KEY_KP8), + KEYMAP(0x49, KEY_KP9), + KEYMAP(0x4e, KEY_KPPLUS), + /* Row-3 */ + KEYMAP(0x4b, KEY_KP4), + KEYMAP(0x4c, KEY_KP5), + KEYMAP(0x4d, KEY_KP6), + /* Row-4 */ + KEYMAP(0x4f, KEY_KP1), + KEYMAP(0x50, KEY_KP2), + KEYMAP(0x51, KEY_KP3), + KEYMAP(0x9c, KEY_KPENTER), + /* Row-5 */ + KEYMAP(0x52, KEY_KP0), + KEYMAP(0x53, KEY_KPDOT), +}; + +/* + * Keymap for rest of non-top-row keys. This is a superset of all the possible + * keys that any chromeos keyboards can have. + */ +static uint32_t rest_of_keymaps[] = { + /* Row-0 */ + KEYMAP(0x01, KEY_ESC), + /* Row-1 */ + KEYMAP(0x29, KEY_GRAVE), + KEYMAP(0x02, KEY_1), + KEYMAP(0x03, KEY_2), + KEYMAP(0x04, KEY_3), + KEYMAP(0x05, KEY_4), + KEYMAP(0x06, KEY_5), + KEYMAP(0x07, KEY_6), + KEYMAP(0x08, KEY_7), + KEYMAP(0x09, KEY_8), + KEYMAP(0x0a, KEY_9), + KEYMAP(0x0b, KEY_0), + KEYMAP(0x0c, KEY_MINUS), + KEYMAP(0x0d, KEY_EQUAL), + KEYMAP(0x0e, KEY_BACKSPACE), + /* Row-2 */ + KEYMAP(0x0f, KEY_TAB), + KEYMAP(0x10, KEY_Q), + KEYMAP(0x11, KEY_W), + KEYMAP(0x12, KEY_E), + KEYMAP(0x13, KEY_R), + KEYMAP(0x14, KEY_T), + KEYMAP(0x15, KEY_Y), + KEYMAP(0x16, KEY_U), + KEYMAP(0x17, KEY_I), + KEYMAP(0x18, KEY_O), + KEYMAP(0x19, KEY_P), + KEYMAP(0x1a, KEY_LEFTBRACE), + KEYMAP(0x1b, KEY_RIGHTBRACE), + KEYMAP(0x2b, KEY_BACKSLASH), + /* Row-3 */ + KEYMAP(0xdb, KEY_LEFTMETA), + KEYMAP(0x1e, KEY_A), + KEYMAP(0x1f, KEY_S), + KEYMAP(0x20, KEY_D), + KEYMAP(0x21, KEY_F), + KEYMAP(0x22, KEY_G), + KEYMAP(0x23, KEY_H), + KEYMAP(0x24, KEY_J), + KEYMAP(0x25, KEY_K), + KEYMAP(0x26, KEY_L), + KEYMAP(0x27, KEY_SEMICOLON), + KEYMAP(0x28, KEY_APOSTROPHE), + KEYMAP(0x1c, KEY_ENTER), + /* Row-4 */ + KEYMAP(0x2a, KEY_LEFTSHIFT), + KEYMAP(0x2c, KEY_Z), + KEYMAP(0x2d, KEY_X), + KEYMAP(0x2e, KEY_C), + KEYMAP(0x2f, KEY_V), + KEYMAP(0x30, KEY_B), + KEYMAP(0x31, KEY_N), + KEYMAP(0x32, KEY_M), + KEYMAP(0x33, KEY_COMMA), + KEYMAP(0x34, KEY_DOT), + KEYMAP(0x35, KEY_SLASH), + KEYMAP(0x36, KEY_RIGHTSHIFT), + /* Row-5 */ + KEYMAP(0x1d, KEY_LEFTCTRL), + KEYMAP(0x38, KEY_LEFTALT), + KEYMAP(0x39, KEY_SPACE), + KEYMAP(0xb8, KEY_RIGHTALT), + KEYMAP(0x9d, KEY_RIGHTCTRL), + /* Arrow keys */ + KEYMAP(0xcb, KEY_LEFT), + KEYMAP(0xd0, KEY_DOWN), + KEYMAP(0xcd, KEY_RIGHT), + KEYMAP(0xc8, KEY_UP), +}; + +static void ssdt_generate_physmap(struct acpi_dp *dp, uint8_t num_top_row_keys, + enum ps2_action_key action_keys[]) +{ + struct acpi_dp *dp_array; + enum ps2_action_key key; + uint32_t keymap, i; + + dp_array = acpi_dp_new_table("function-row-physmap"); + if (!dp_array) { + printk(BIOS_ERR, "PS2K: couldn't write function-row-physmap\n"); + return; + } + + printk(BIOS_INFO, "PS2K: Physmap: ["); + for (i = 0; i < num_top_row_keys; i++) { + key = action_keys[i]; + if (key && key < ARRAY_SIZE(action_keymaps)) { + keymap = action_keymaps[key]; + } else { + keymap = 0; + printk(BIOS_ERR, + "PS2K: invalid top-action-key-%u: %u(skipped)\n", + i, key); + } + acpi_dp_add_integer(dp_array, NULL, SCANCODE(keymap)); + printk(BIOS_INFO, " %X", SCANCODE(keymap)); + } + + printk(BIOS_INFO, " ]\n"); + acpi_dp_add_array(dp, dp_array); +} + +static void ssdt_generate_keymap(struct acpi_dp *dp, uint8_t num_top_row_keys, + enum ps2_action_key action_keys[], + bool can_send_function_keys, + bool has_numeric_keypad, + bool has_scrnlock_key) +{ + struct acpi_dp *dp_array; + enum ps2_action_key key; + uint32_t keymap; + unsigned int i, total = 0; + + dp_array = acpi_dp_new_table("linux,keymap"); + if (!dp_array) { + printk(BIOS_ERR, "PS2K: couldn't write linux,keymap\n"); + return; + } + + /* Write out keymap for top row action keys */ + for (i = 0; i < num_top_row_keys; i++) { + key = action_keys[i]; + if (!key || key >= ARRAY_SIZE(action_keymaps)) { + printk(BIOS_ERR, + "PS2K: invalid top-action-key-%u: %u\n", i, key); + continue; + } + keymap = action_keymaps[key]; + acpi_dp_add_integer(dp_array, NULL, keymap); + total++; + } + + /* Write out keymap for function keys, if keyboard can send them */ + if (can_send_function_keys) { + for (i = 0; i < num_top_row_keys; i++) { + keymap = function_keymaps[i]; + acpi_dp_add_integer(dp_array, NULL, keymap); + } + + total += num_top_row_keys; + } + + /* Write out keymap for numeric keypad, if the keyboard has it */ + if (has_numeric_keypad) { + for (i = 0; i < ARRAY_SIZE(numeric_keypad_keymaps); i++) { + keymap = numeric_keypad_keymaps[i]; + acpi_dp_add_integer(dp_array, NULL, keymap); + } + + total += ARRAY_SIZE(numeric_keypad_keymaps); + } + + /* Provide keymap for screenlock only if it is present */ + if (has_scrnlock_key) { + acpi_dp_add_integer(dp_array, NULL, KEYMAP(0x5d, KEY_SLEEP)); + total++; + } + + /* Write out keymap for rest of keys */ + for (i = 0; i < ARRAY_SIZE(rest_of_keymaps); i++) { + keymap = rest_of_keymaps[i]; + acpi_dp_add_integer(dp_array, NULL, keymap); + } + + total += ARRAY_SIZE(rest_of_keymaps); + printk(BIOS_INFO, "PS2K: Passing %u keymaps to kernel\n", total); + + acpi_dp_add_array(dp, dp_array); +} + +void acpigen_ps2_keyboard_dsd(const char *scope, uint8_t num_top_row_keys, + enum ps2_action_key action_keys[], + bool can_send_function_keys, + bool has_numeric_keypad, + bool has_scrnlock_key) +{ + struct acpi_dp *dsd; + + if (!scope || + num_top_row_keys < PS2_MIN_TOP_ROW_KEYS || + num_top_row_keys > PS2_MAX_TOP_ROW_KEYS) { + printk(BIOS_ERR, "PS2K: %s: invalid args\n", __func__); + return; + } + + dsd = acpi_dp_new_table("_DSD"); + if (!dsd) { + printk(BIOS_ERR, "PS2K: couldn't write _DSD\n"); + return; + } + + acpigen_write_scope(scope); + ssdt_generate_physmap(dsd, num_top_row_keys, action_keys); + ssdt_generate_keymap(dsd, num_top_row_keys, action_keys, + can_send_function_keys, has_numeric_keypad, + has_scrnlock_key); + acpi_dp_write(dsd); + acpigen_pop_len(); /* Scope */ +} diff --git a/src/arch/x86/include/arch/acpigen_ps2_keybd.h b/src/arch/x86/include/arch/acpigen_ps2_keybd.h new file mode 100644 index 0000000000..c0228bca16 --- /dev/null +++ b/src/arch/x86/include/arch/acpigen_ps2_keybd.h @@ -0,0 +1,41 @@ +/* + * This file is part of the coreboot project. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef __ACPIGEN_PS2_KEYBD_H__ +#define __ACPIGEN_PS2_KEYBD_H__ + +#include <types.h> + +enum ps2_action_key { + PS2_KEY_ABSENT = 0, + PS2_KEY_BACK, + PS2_KEY_FORWARD, + PS2_KEY_REFRESH, + PS2_KEY_FULLSCREEN, + PS2_KEY_OVERVIEW, + PS2_KEY_BRIGHTNESS_DOWN, + PS2_KEY_BRIGHTNESS_UP, + PS2_KEY_VOL_MUTE, + PS2_KEY_VOL_DOWN, + PS2_KEY_VOL_UP, + PS2_KEY_SNAPSHOT, + PS2_KEY_PRIVACY_SCRN_TOGGLE, + PS2_KEY_KBD_BKLIGHT_DOWN, + PS2_KEY_KBD_BKLIGHT_UP, + PS2_KEY_PLAY_PAUSE, + PS2_KEY_NEXT_TRACK, + PS2_KEY_PREV_TRACK, +}; + +#define PS2_MIN_TOP_ROW_KEYS 10 +#define PS2_MAX_TOP_ROW_KEYS 15 + +void acpigen_ps2_keyboard_dsd(const char *scope, uint8_t num_top_row_keys, + enum ps2_action_key action_keys[], + bool can_send_function_keys, + bool has_numeric_keypad, bool has_scrnlock_key); + +#endif /* __ACPIGEN_PS2_KEYBD_H__ */ |