[coreboot] keyboard maps support and reset handler
Jordan Crouse
jordan.crouse at amd.com
Fri Sep 26 18:40:26 CEST 2008
On 26/09/08 01:19 +0200, Stefan Reinauer wrote:
> See patch
>
> --
> coresystems GmbH • Brahmsstr. 16 • D-79104 Freiburg i. Br.
> Tel.: +49 761 7668825 • Fax: +49 761 7664613
> Email: info at coresystems.de • http://www.coresystems.de/
> Registergericht: Amtsgericht Freiburg • HRB 7656
> Geschäftsführer: Stefan Reinauer • Ust-IdNr.: DE245674866
>
> * add keyboard layout support to libpayload
> * add a reset handler mechanism (CTRL-ALT-DEL)
>
> Signed-off-by: Stefan Reinauer <stepan at coresystems.de>
Acked-by: Jordan Crouse <jordan.crouse at amd.com>
Hehe - the CTRL-ALT-DEL handler makes me laugh. But libpayload
doesn't actually have any reset code - that sounds like something
we should add.
Jordan
> Index: include/libpayload.h
> ===================================================================
> --- include/libpayload.h (revision 3600)
> +++ include/libpayload.h (working copy)
> @@ -123,6 +132,8 @@
> 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));
> /** @} */
>
> /**
> Index: Config.in
> ===================================================================
> --- Config.in (revision 3600)
> +++ Config.in (working copy)
> @@ -100,6 +100,16 @@
> 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"
> Index: drivers/keyboard.c
> ===================================================================
> --- drivers/keyboard.c (revision 3600)
> +++ drivers/keyboard.c (working copy)
> @@ -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 @@
> 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 @@
> #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 @@
> 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 @@
> if (modifier & MOD_ALT)
> shift += 2;
>
> - ret = map[shift][ch];
> + ret = map->map[shift][ch];
>
> - if (modifier & MOD_CTRL)
> - ret = (ret >= 'a' && ret <= 'z') ? ret & 0x1f : 0;
> -
> - return ret;
> + 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 @@
> 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();
> --
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> http://www.coreboot.org/mailman/listinfo/coreboot
--
Jordan Crouse
Systems Software Development Engineer
Advanced Micro Devices, Inc.
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