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-rw-r--r--src/arch/x86/Makefile.inc1
-rw-r--r--src/arch/x86/acpigen_ps2_keybd.c297
-rw-r--r--src/arch/x86/include/arch/acpigen_ps2_keybd.h41
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__ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 11:58:13 +0000