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-rw-r--r--payloads/libpayload/Config.in10
-rw-r--r--payloads/libpayload/drivers/keyboard.c143
-rw-r--r--payloads/libpayload/include/libpayload.h2
3 files changed, 146 insertions, 9 deletions
diff --git a/payloads/libpayload/Config.in b/payloads/libpayload/Config.in
index 61567003f0..fd585b9b46 100644
--- a/payloads/libpayload/Config.in
+++ b/payloads/libpayload/Config.in
@@ -100,6 +100,16 @@ config PC_KEYBOARD
bool "Allow input from a PC keyboard"
default y
+config PC_KEYBOARD_LAYOUT_US
+ bool "English (US) keyboard layout"
+ depends on PC_KEYBOARD
+ default y
+
+config PC_KEYBOARD_LAYOUT_DE
+ bool "German keyboard layout"
+ depends on PC_KEYBOARD
+ default n
+
endmenu
menu "Drivers"
diff --git a/payloads/libpayload/drivers/keyboard.c b/payloads/libpayload/drivers/keyboard.c
index b33289801f..944b9a66a2 100644
--- a/payloads/libpayload/drivers/keyboard.c
+++ b/payloads/libpayload/drivers/keyboard.c
@@ -28,6 +28,7 @@
*/
#include <libpayload.h>
+#include <config.h>
#include <curses.h>
#define I8042_CMD_READ_MODE 0x20
@@ -35,7 +36,18 @@
#define I8042_MODE_XLATE 0x40
-unsigned short map[4][0x57] = {
+static void (*reset_handler)(void) = NULL;
+
+struct layout_maps {
+ char *country;
+ unsigned short map[4][0x57];
+};
+
+struct layout_maps *map;
+
+struct layout_maps keyboard_layouts[] = {
+#ifdef CONFIG_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,
@@ -88,6 +100,65 @@ unsigned short map[4][0x57] = {
KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00
}
+}},
+#endif
+#ifdef CONFIG_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)
@@ -95,6 +166,16 @@ unsigned short map[4][0x57] = {
#define MOD_CAPSLOCK (1 << 2)
#define MOD_ALT (1 << 3)
+static void keyboard_cmd(unsigned char cmd, unsigned char val)
+{
+ outb(cmd, 0x60);
+ /* wait until keyboard controller accepts cmds: */
+ while (inb(0x64) & 2);
+ outb(val, 0x60);
+ while (inb(0x64) & 2);
+}
+
+
int keyboard_havechar(void)
{
unsigned char c = inb(0x64);
@@ -144,10 +225,13 @@ int keyboard_getchar(void)
modifier &= ~MOD_CTRL;
break;
case 0x3a:
- if (modifier & MOD_CAPSLOCK)
+ if (modifier & MOD_CAPSLOCK) {
modifier &= ~MOD_CAPSLOCK;
- else
+ keyboard_cmd(0xed, (0 << 2));
+ } else {
modifier |= MOD_CAPSLOCK;
+ keyboard_cmd(0xed, (1 << 2));
+ }
break;
}
@@ -158,12 +242,21 @@ int keyboard_getchar(void)
if (modifier & MOD_ALT)
shift += 2;
- ret = map[shift][ch];
-
- if (modifier & MOD_CTRL)
- ret = (ret >= 'a' && ret <= 'z') ? ret & 0x1f : 0;
-
- return ret;
+ 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;
+ }
+ }
}
return ret;
@@ -203,9 +296,41 @@ static void keyboard_set_mode(unsigned char mode)
outb(mode, 0x60);
}
+/**
+ * Set keyboard layout
+ * @param country string describing the keyboard layout language.
+ * Valid values are "en", "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;
+}
+
+int keyboard_add_reset_handler(void (*new_handler)(void))
+{
+ reset_handler = new_handler;
+
+ return 0;
+}
+
void keyboard_init(void)
{
u8 mode;
+ map = &keyboard_layouts[0];
/* Empty keyboard buffer */
while (keyboard_havechar()) keyboard_getchar();
diff --git a/payloads/libpayload/include/libpayload.h b/payloads/libpayload/include/libpayload.h
index 6a4db0e051..b9ced58064 100644
--- a/payloads/libpayload/include/libpayload.h
+++ b/payloads/libpayload/include/libpayload.h
@@ -123,6 +123,8 @@ void keyboard_init(void);
int keyboard_havechar(void);
unsigned char keyboard_get_scancode(void);
int keyboard_getchar(void);
+int keyboard_set_layout(char *country);
+int keyboard_add_reset_handler(void (*new_handler)(void));
/** @} */
/**
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 08:48:07 +0000