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grub2/0023-at_keyboard-Split-protocol-from-controller-code.patch
Peter Jones 5725bcd5ca Rebased to newer upstream for fedora-28 
Signed-off-by: Peter Jones <pjones@redhat.com>
2018-07-09 13:34:03 -04:00

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From 216950a4eea1a1ead1c28eaca94e34ea2ef2ad19 Mon Sep 17 00:00:00 2001
From: Vladimir Serbinenko <phcoder@gmail.com>
Date: Mon, 8 May 2017 21:41:22 +0200
Subject: [PATCH 023/251] at_keyboard: Split protocol from controller code.
On vexpress controller is different but protocol is the same, so reuse the
code.
---
grub-core/Makefile.core.def | 3 +
grub-core/term/at_keyboard.c | 428 +++----------------------------------------
grub-core/term/ps2.c | 387 ++++++++++++++++++++++++++++++++++++++
include/grub/at_keyboard.h | 4 -
include/grub/ps2.h | 43 +++++
5 files changed, 463 insertions(+), 402 deletions(-)
create mode 100644 grub-core/term/ps2.c
create mode 100644 include/grub/ps2.h
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index 77d0b019eb2..6ade6e95057 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -251,6 +251,7 @@ kernel = {
mips_qemu_mips = term/ns8250.c;
mips_qemu_mips = term/serial.c;
mips_qemu_mips = term/at_keyboard.c;
+ mips_qemu_mips = term/ps2.c;
mips_qemu_mips = commands/boot.c;
mips_qemu_mips = commands/keylayouts.c;
mips_qemu_mips = term/i386/pc/vga_text.c;
@@ -266,6 +267,7 @@ kernel = {
mips_loongson = bus/pci.c;
mips_loongson = kern/mips/loongson/init.c;
mips_loongson = term/at_keyboard.c;
+ mips_loongson = term/ps2.c;
mips_loongson = commands/boot.c;
mips_loongson = term/serial.c;
mips_loongson = video/sm712.c;
@@ -1887,6 +1889,7 @@ module = {
module = {
name = at_keyboard;
common = term/at_keyboard.c;
+ common = term/ps2.c;
enable = x86;
};
diff --git a/grub-core/term/at_keyboard.c b/grub-core/term/at_keyboard.c
index b4ea9ff7e63..3ab4e205f40 100644
--- a/grub-core/term/at_keyboard.c
+++ b/grub-core/term/at_keyboard.c
@@ -22,212 +22,21 @@
#include <grub/cpu/io.h>
#include <grub/misc.h>
#include <grub/term.h>
-#include <grub/keyboard_layouts.h>
#include <grub/time.h>
#include <grub/loader.h>
+#include <grub/ps2.h>
GRUB_MOD_LICENSE ("GPLv3+");
-static short at_keyboard_status = 0;
-static int e0_received = 0;
-static int f0_received = 0;
-
-static grub_uint8_t led_status;
-
-#define KEYBOARD_LED_SCROLL (1 << 0)
-#define KEYBOARD_LED_NUM (1 << 1)
-#define KEYBOARD_LED_CAPS (1 << 2)
-
static grub_uint8_t grub_keyboard_controller_orig;
static grub_uint8_t grub_keyboard_orig_set;
-static grub_uint8_t current_set;
-
-static void
-grub_keyboard_controller_init (void);
-
-static const grub_uint8_t set1_mapping[128] =
- {
- /* 0x00 */ 0 /* Unused */, GRUB_KEYBOARD_KEY_ESCAPE,
- /* 0x02 */ GRUB_KEYBOARD_KEY_1, GRUB_KEYBOARD_KEY_2,
- /* 0x04 */ GRUB_KEYBOARD_KEY_3, GRUB_KEYBOARD_KEY_4,
- /* 0x06 */ GRUB_KEYBOARD_KEY_5, GRUB_KEYBOARD_KEY_6,
- /* 0x08 */ GRUB_KEYBOARD_KEY_7, GRUB_KEYBOARD_KEY_8,
- /* 0x0a */ GRUB_KEYBOARD_KEY_9, GRUB_KEYBOARD_KEY_0,
- /* 0x0c */ GRUB_KEYBOARD_KEY_DASH, GRUB_KEYBOARD_KEY_EQUAL,
- /* 0x0e */ GRUB_KEYBOARD_KEY_BACKSPACE, GRUB_KEYBOARD_KEY_TAB,
- /* 0x10 */ GRUB_KEYBOARD_KEY_Q, GRUB_KEYBOARD_KEY_W,
- /* 0x12 */ GRUB_KEYBOARD_KEY_E, GRUB_KEYBOARD_KEY_R,
- /* 0x14 */ GRUB_KEYBOARD_KEY_T, GRUB_KEYBOARD_KEY_Y,
- /* 0x16 */ GRUB_KEYBOARD_KEY_U, GRUB_KEYBOARD_KEY_I,
- /* 0x18 */ GRUB_KEYBOARD_KEY_O, GRUB_KEYBOARD_KEY_P,
- /* 0x1a */ GRUB_KEYBOARD_KEY_LBRACKET, GRUB_KEYBOARD_KEY_RBRACKET,
- /* 0x1c */ GRUB_KEYBOARD_KEY_ENTER, GRUB_KEYBOARD_KEY_LEFT_CTRL,
- /* 0x1e */ GRUB_KEYBOARD_KEY_A, GRUB_KEYBOARD_KEY_S,
- /* 0x20 */ GRUB_KEYBOARD_KEY_D, GRUB_KEYBOARD_KEY_F,
- /* 0x22 */ GRUB_KEYBOARD_KEY_G, GRUB_KEYBOARD_KEY_H,
- /* 0x24 */ GRUB_KEYBOARD_KEY_J, GRUB_KEYBOARD_KEY_K,
- /* 0x26 */ GRUB_KEYBOARD_KEY_L, GRUB_KEYBOARD_KEY_SEMICOLON,
- /* 0x28 */ GRUB_KEYBOARD_KEY_DQUOTE, GRUB_KEYBOARD_KEY_RQUOTE,
- /* 0x2a */ GRUB_KEYBOARD_KEY_LEFT_SHIFT, GRUB_KEYBOARD_KEY_BACKSLASH,
- /* 0x2c */ GRUB_KEYBOARD_KEY_Z, GRUB_KEYBOARD_KEY_X,
- /* 0x2e */ GRUB_KEYBOARD_KEY_C, GRUB_KEYBOARD_KEY_V,
- /* 0x30 */ GRUB_KEYBOARD_KEY_B, GRUB_KEYBOARD_KEY_N,
- /* 0x32 */ GRUB_KEYBOARD_KEY_M, GRUB_KEYBOARD_KEY_COMMA,
- /* 0x34 */ GRUB_KEYBOARD_KEY_DOT, GRUB_KEYBOARD_KEY_SLASH,
- /* 0x36 */ GRUB_KEYBOARD_KEY_RIGHT_SHIFT, GRUB_KEYBOARD_KEY_NUMMUL,
- /* 0x38 */ GRUB_KEYBOARD_KEY_LEFT_ALT, GRUB_KEYBOARD_KEY_SPACE,
- /* 0x3a */ GRUB_KEYBOARD_KEY_CAPS_LOCK, GRUB_KEYBOARD_KEY_F1,
- /* 0x3c */ GRUB_KEYBOARD_KEY_F2, GRUB_KEYBOARD_KEY_F3,
- /* 0x3e */ GRUB_KEYBOARD_KEY_F4, GRUB_KEYBOARD_KEY_F5,
- /* 0x40 */ GRUB_KEYBOARD_KEY_F6, GRUB_KEYBOARD_KEY_F7,
- /* 0x42 */ GRUB_KEYBOARD_KEY_F8, GRUB_KEYBOARD_KEY_F9,
- /* 0x44 */ GRUB_KEYBOARD_KEY_F10, GRUB_KEYBOARD_KEY_NUM_LOCK,
- /* 0x46 */ GRUB_KEYBOARD_KEY_SCROLL_LOCK, GRUB_KEYBOARD_KEY_NUM7,
- /* 0x48 */ GRUB_KEYBOARD_KEY_NUM8, GRUB_KEYBOARD_KEY_NUM9,
- /* 0x4a */ GRUB_KEYBOARD_KEY_NUMMINUS, GRUB_KEYBOARD_KEY_NUM4,
- /* 0x4c */ GRUB_KEYBOARD_KEY_NUM5, GRUB_KEYBOARD_KEY_NUM6,
- /* 0x4e */ GRUB_KEYBOARD_KEY_NUMPLUS, GRUB_KEYBOARD_KEY_NUM1,
- /* 0x50 */ GRUB_KEYBOARD_KEY_NUM2, GRUB_KEYBOARD_KEY_NUM3,
- /* 0x52 */ GRUB_KEYBOARD_KEY_NUM0, GRUB_KEYBOARD_KEY_NUMDOT,
- /* 0x54 */ 0, 0,
- /* 0x56 */ GRUB_KEYBOARD_KEY_102ND, GRUB_KEYBOARD_KEY_F11,
- /* 0x58 */ GRUB_KEYBOARD_KEY_F12, 0,
- /* 0x5a */ 0, 0,
- /* 0x5c */ 0, 0,
- /* 0x5e */ 0, 0,
- /* 0x60 */ 0, 0,
- /* 0x62 */ 0, 0,
- /* OLPC keys. Just mapped to normal keys. */
- /* 0x64 */ 0, GRUB_KEYBOARD_KEY_UP,
- /* 0x66 */ GRUB_KEYBOARD_KEY_DOWN, GRUB_KEYBOARD_KEY_LEFT,
- /* 0x68 */ GRUB_KEYBOARD_KEY_RIGHT, 0,
- /* 0x6a */ 0, 0,
- /* 0x6c */ 0, 0,
- /* 0x6e */ 0, 0,
- /* 0x70 */ 0, 0,
- /* 0x72 */ 0, GRUB_KEYBOARD_KEY_JP_RO,
- /* 0x74 */ 0, 0,
- /* 0x76 */ 0, 0,
- /* 0x78 */ 0, 0,
- /* 0x7a */ 0, 0,
- /* 0x7c */ 0, GRUB_KEYBOARD_KEY_JP_YEN,
- /* 0x7e */ GRUB_KEYBOARD_KEY_KPCOMMA
- };
-
-static const struct
-{
- grub_uint8_t from, to;
-} set1_e0_mapping[] =
- {
- {0x1c, GRUB_KEYBOARD_KEY_NUMENTER},
- {0x1d, GRUB_KEYBOARD_KEY_RIGHT_CTRL},
- {0x35, GRUB_KEYBOARD_KEY_NUMSLASH },
- {0x38, GRUB_KEYBOARD_KEY_RIGHT_ALT},
- {0x47, GRUB_KEYBOARD_KEY_HOME},
- {0x48, GRUB_KEYBOARD_KEY_UP},
- {0x49, GRUB_KEYBOARD_KEY_PPAGE},
- {0x4b, GRUB_KEYBOARD_KEY_LEFT},
- {0x4d, GRUB_KEYBOARD_KEY_RIGHT},
- {0x4f, GRUB_KEYBOARD_KEY_END},
- {0x50, GRUB_KEYBOARD_KEY_DOWN},
- {0x51, GRUB_KEYBOARD_KEY_NPAGE},
- {0x52, GRUB_KEYBOARD_KEY_INSERT},
- {0x53, GRUB_KEYBOARD_KEY_DELETE},
- };
-
-static const grub_uint8_t set2_mapping[256] =
- {
- /* 0x00 */ 0, GRUB_KEYBOARD_KEY_F9,
- /* 0x02 */ 0, GRUB_KEYBOARD_KEY_F5,
- /* 0x04 */ GRUB_KEYBOARD_KEY_F3, GRUB_KEYBOARD_KEY_F1,
- /* 0x06 */ GRUB_KEYBOARD_KEY_F2, GRUB_KEYBOARD_KEY_F12,
- /* 0x08 */ 0, GRUB_KEYBOARD_KEY_F10,
- /* 0x0a */ GRUB_KEYBOARD_KEY_F8, GRUB_KEYBOARD_KEY_F6,
- /* 0x0c */ GRUB_KEYBOARD_KEY_F4, GRUB_KEYBOARD_KEY_TAB,
- /* 0x0e */ GRUB_KEYBOARD_KEY_RQUOTE, 0,
- /* 0x10 */ 0, GRUB_KEYBOARD_KEY_LEFT_ALT,
- /* 0x12 */ GRUB_KEYBOARD_KEY_LEFT_SHIFT, 0,
- /* 0x14 */ GRUB_KEYBOARD_KEY_LEFT_CTRL, GRUB_KEYBOARD_KEY_Q,
- /* 0x16 */ GRUB_KEYBOARD_KEY_1, 0,
- /* 0x18 */ 0, 0,
- /* 0x1a */ GRUB_KEYBOARD_KEY_Z, GRUB_KEYBOARD_KEY_S,
- /* 0x1c */ GRUB_KEYBOARD_KEY_A, GRUB_KEYBOARD_KEY_W,
- /* 0x1e */ GRUB_KEYBOARD_KEY_2, 0,
- /* 0x20 */ 0, GRUB_KEYBOARD_KEY_C,
- /* 0x22 */ GRUB_KEYBOARD_KEY_X, GRUB_KEYBOARD_KEY_D,
- /* 0x24 */ GRUB_KEYBOARD_KEY_E, GRUB_KEYBOARD_KEY_4,
- /* 0x26 */ GRUB_KEYBOARD_KEY_3, 0,
- /* 0x28 */ 0, GRUB_KEYBOARD_KEY_SPACE,
- /* 0x2a */ GRUB_KEYBOARD_KEY_V, GRUB_KEYBOARD_KEY_F,
- /* 0x2c */ GRUB_KEYBOARD_KEY_T, GRUB_KEYBOARD_KEY_R,
- /* 0x2e */ GRUB_KEYBOARD_KEY_5, 0,
- /* 0x30 */ 0, GRUB_KEYBOARD_KEY_N,
- /* 0x32 */ GRUB_KEYBOARD_KEY_B, GRUB_KEYBOARD_KEY_H,
- /* 0x34 */ GRUB_KEYBOARD_KEY_G, GRUB_KEYBOARD_KEY_Y,
- /* 0x36 */ GRUB_KEYBOARD_KEY_6, 0,
- /* 0x38 */ 0, 0,
- /* 0x3a */ GRUB_KEYBOARD_KEY_M, GRUB_KEYBOARD_KEY_J,
- /* 0x3c */ GRUB_KEYBOARD_KEY_U, GRUB_KEYBOARD_KEY_7,
- /* 0x3e */ GRUB_KEYBOARD_KEY_8, 0,
- /* 0x40 */ 0, GRUB_KEYBOARD_KEY_COMMA,
- /* 0x42 */ GRUB_KEYBOARD_KEY_K, GRUB_KEYBOARD_KEY_I,
- /* 0x44 */ GRUB_KEYBOARD_KEY_O, GRUB_KEYBOARD_KEY_0,
- /* 0x46 */ GRUB_KEYBOARD_KEY_9, 0,
- /* 0x48 */ 0, GRUB_KEYBOARD_KEY_DOT,
- /* 0x4a */ GRUB_KEYBOARD_KEY_SLASH, GRUB_KEYBOARD_KEY_L,
- /* 0x4c */ GRUB_KEYBOARD_KEY_SEMICOLON, GRUB_KEYBOARD_KEY_P,
- /* 0x4e */ GRUB_KEYBOARD_KEY_DASH, 0,
- /* 0x50 */ 0, GRUB_KEYBOARD_KEY_JP_RO,
- /* 0x52 */ GRUB_KEYBOARD_KEY_DQUOTE, 0,
- /* 0x54 */ GRUB_KEYBOARD_KEY_LBRACKET, GRUB_KEYBOARD_KEY_EQUAL,
- /* 0x56 */ 0, 0,
- /* 0x58 */ GRUB_KEYBOARD_KEY_CAPS_LOCK, GRUB_KEYBOARD_KEY_RIGHT_SHIFT,
- /* 0x5a */ GRUB_KEYBOARD_KEY_ENTER, GRUB_KEYBOARD_KEY_RBRACKET,
- /* 0x5c */ 0, GRUB_KEYBOARD_KEY_BACKSLASH,
- /* 0x5e */ 0, 0,
- /* 0x60 */ 0, GRUB_KEYBOARD_KEY_102ND,
- /* 0x62 */ 0, 0,
- /* 0x64 */ 0, 0,
- /* 0x66 */ GRUB_KEYBOARD_KEY_BACKSPACE, 0,
- /* 0x68 */ 0, GRUB_KEYBOARD_KEY_NUM1,
- /* 0x6a */ GRUB_KEYBOARD_KEY_JP_YEN, GRUB_KEYBOARD_KEY_NUM4,
- /* 0x6c */ GRUB_KEYBOARD_KEY_NUM7, GRUB_KEYBOARD_KEY_KPCOMMA,
- /* 0x6e */ 0, 0,
- /* 0x70 */ GRUB_KEYBOARD_KEY_NUM0, GRUB_KEYBOARD_KEY_NUMDOT,
- /* 0x72 */ GRUB_KEYBOARD_KEY_NUM2, GRUB_KEYBOARD_KEY_NUM5,
- /* 0x74 */ GRUB_KEYBOARD_KEY_NUM6, GRUB_KEYBOARD_KEY_NUM8,
- /* 0x76 */ GRUB_KEYBOARD_KEY_ESCAPE, GRUB_KEYBOARD_KEY_NUM_LOCK,
- /* 0x78 */ GRUB_KEYBOARD_KEY_F11, GRUB_KEYBOARD_KEY_NUMPLUS,
- /* 0x7a */ GRUB_KEYBOARD_KEY_NUM3, GRUB_KEYBOARD_KEY_NUMMINUS,
- /* 0x7c */ GRUB_KEYBOARD_KEY_NUMMUL, GRUB_KEYBOARD_KEY_NUM9,
- /* 0x7e */ GRUB_KEYBOARD_KEY_SCROLL_LOCK, 0,
- /* 0x80 */ 0, 0,
- /* 0x82 */ 0, GRUB_KEYBOARD_KEY_F7,
- };
-
-static const struct
-{
- grub_uint8_t from, to;
-} set2_e0_mapping[] =
- {
- {0x11, GRUB_KEYBOARD_KEY_RIGHT_ALT},
- {0x14, GRUB_KEYBOARD_KEY_RIGHT_CTRL},
- {0x4a, GRUB_KEYBOARD_KEY_NUMSLASH},
- {0x5a, GRUB_KEYBOARD_KEY_NUMENTER},
- {0x69, GRUB_KEYBOARD_KEY_END},
- {0x6b, GRUB_KEYBOARD_KEY_LEFT},
- {0x6c, GRUB_KEYBOARD_KEY_HOME},
- {0x70, GRUB_KEYBOARD_KEY_INSERT},
- {0x71, GRUB_KEYBOARD_KEY_DELETE},
- {0x72, GRUB_KEYBOARD_KEY_DOWN},
- {0x74, GRUB_KEYBOARD_KEY_RIGHT},
- {0x75, GRUB_KEYBOARD_KEY_UP},
- {0x7a, GRUB_KEYBOARD_KEY_NPAGE},
- {0x7d, GRUB_KEYBOARD_KEY_PPAGE},
- };
+struct grub_ps2_state ps2_state;
static int ping_sent;
+static void
+grub_keyboard_controller_init (void);
+
static void
keyboard_controller_wait_until_ready (void)
{
@@ -350,12 +159,12 @@ set_scancodes (void)
if (!grub_keyboard_orig_set)
{
grub_dprintf ("atkeyb", "No sets support assumed\n");
- current_set = 1;
+ ps2_state.current_set = 1;
return;
}
#if !USE_SCANCODE_SET
- current_set = 1;
+ ps2_state.current_set = 1;
return;
#else
@@ -363,15 +172,15 @@ set_scancodes (void)
& ~KEYBOARD_AT_TRANSLATE);
write_mode (2);
- current_set = query_mode ();
- grub_dprintf ("atkeyb", "returned set %d\n", current_set);
- if (current_set == 2)
+ ps2_state.current_set = query_mode ();
+ grub_dprintf ("atkeyb", "returned set %d\n", ps2_state.current_set);
+ if (ps2_state.current_set == 2)
return;
write_mode (1);
- current_set = query_mode ();
- grub_dprintf ("atkeyb", "returned set %d\n", current_set);
- if (current_set == 1)
+ ps2_state.current_set = query_mode ();
+ grub_dprintf ("atkeyb", "returned set %d\n", ps2_state.current_set);
+ if (ps2_state.current_set == 1)
return;
grub_dprintf ("atkeyb", "no supported scancode set found\n");
#endif
@@ -386,164 +195,10 @@ keyboard_controller_led (grub_uint8_t leds)
grub_outb (leds & 0x7, KEYBOARD_REG_DATA);
}
-static int
-fetch_key (int *is_break)
-{
- int was_ext = 0;
- grub_uint8_t at_key;
- int ret = 0;
-
- if (! KEYBOARD_ISREADY (grub_inb (KEYBOARD_REG_STATUS)))
- return -1;
- at_key = grub_inb (KEYBOARD_REG_DATA);
- /* May happen if no keyboard is connected. Just ignore this. */
- if (at_key == 0xff)
- return -1;
- if (at_key == 0xe0)
- {
- e0_received = 1;
- return -1;
- }
-
- if ((current_set == 2 || current_set == 3) && at_key == 0xf0)
- {
- f0_received = 1;
- return -1;
- }
-
- /* Setting LEDs may generate ACKs. */
- if (at_key == GRUB_AT_ACK)
- return -1;
-
- was_ext = e0_received;
- e0_received = 0;
-
- switch (current_set)
- {
- case 1:
- *is_break = !!(at_key & 0x80);
- if (!was_ext)
- ret = set1_mapping[at_key & 0x7f];
- else
- {
- unsigned i;
- for (i = 0; i < ARRAY_SIZE (set1_e0_mapping); i++)
- if (set1_e0_mapping[i].from == (at_key & 0x7f))
- {
- ret = set1_e0_mapping[i].to;
- break;
- }
- }
- break;
- case 2:
- *is_break = f0_received;
- f0_received = 0;
- if (!was_ext)
- ret = set2_mapping[at_key];
- else
- {
- unsigned i;
- for (i = 0; i < ARRAY_SIZE (set2_e0_mapping); i++)
- if (set2_e0_mapping[i].from == at_key)
- {
- ret = set2_e0_mapping[i].to;
- break;
- }
- }
- break;
- default:
- return -1;
- }
- if (!ret)
- {
- if (was_ext)
- grub_dprintf ("atkeyb", "Unknown key 0xe0+0x%02x from set %d\n",
- at_key, current_set);
- else
- grub_dprintf ("atkeyb", "Unknown key 0x%02x from set %d\n",
- at_key, current_set);
- return -1;
- }
- return ret;
-}
-
-/* FIXME: This should become an interrupt service routine. For now
- it's just used to catch events from control keys. */
-static int
-grub_keyboard_isr (grub_keyboard_key_t key, int is_break)
-{
- if (!is_break)
- switch (key)
- {
- case GRUB_KEYBOARD_KEY_LEFT_SHIFT:
- at_keyboard_status |= GRUB_TERM_STATUS_LSHIFT;
- return 1;
- case GRUB_KEYBOARD_KEY_RIGHT_SHIFT:
- at_keyboard_status |= GRUB_TERM_STATUS_RSHIFT;
- return 1;
- case GRUB_KEYBOARD_KEY_LEFT_CTRL:
- at_keyboard_status |= GRUB_TERM_STATUS_LCTRL;
- return 1;
- case GRUB_KEYBOARD_KEY_RIGHT_CTRL:
- at_keyboard_status |= GRUB_TERM_STATUS_RCTRL;
- return 1;
- case GRUB_KEYBOARD_KEY_RIGHT_ALT:
- at_keyboard_status |= GRUB_TERM_STATUS_RALT;
- return 1;
- case GRUB_KEYBOARD_KEY_LEFT_ALT:
- at_keyboard_status |= GRUB_TERM_STATUS_LALT;
- return 1;
- default:
- return 0;
- }
- else
- switch (key)
- {
- case GRUB_KEYBOARD_KEY_LEFT_SHIFT:
- at_keyboard_status &= ~GRUB_TERM_STATUS_LSHIFT;
- return 1;
- case GRUB_KEYBOARD_KEY_RIGHT_SHIFT:
- at_keyboard_status &= ~GRUB_TERM_STATUS_RSHIFT;
- return 1;
- case GRUB_KEYBOARD_KEY_LEFT_CTRL:
- at_keyboard_status &= ~GRUB_TERM_STATUS_LCTRL;
- return 1;
- case GRUB_KEYBOARD_KEY_RIGHT_CTRL:
- at_keyboard_status &= ~GRUB_TERM_STATUS_RCTRL;
- return 1;
- case GRUB_KEYBOARD_KEY_RIGHT_ALT:
- at_keyboard_status &= ~GRUB_TERM_STATUS_RALT;
- return 1;
- case GRUB_KEYBOARD_KEY_LEFT_ALT:
- at_keyboard_status &= ~GRUB_TERM_STATUS_LALT;
- return 1;
- default:
- return 0;
- }
-}
-
-/* If there is a raw key pending, return it; otherwise return -1. */
-static int
-grub_keyboard_getkey (void)
-{
- int key;
- int is_break = 0;
-
- key = fetch_key (&is_break);
- if (key == -1)
- return -1;
-
- if (grub_keyboard_isr (key, is_break))
- return -1;
- if (is_break)
- return -1;
- return key;
-}
-
int
grub_at_keyboard_is_alive (void)
{
- if (current_set != 0)
+ if (ps2_state.current_set != 0)
return 1;
if (ping_sent
&& KEYBOARD_COMMAND_ISREADY (grub_inb (KEYBOARD_REG_STATUS))
@@ -566,51 +221,28 @@ grub_at_keyboard_is_alive (void)
static int
grub_at_keyboard_getkey (struct grub_term_input *term __attribute__ ((unused)))
{
- int code;
+ grub_uint8_t at_key;
+ int ret;
+ grub_uint8_t old_led;
if (!grub_at_keyboard_is_alive ())
return GRUB_TERM_NO_KEY;
- code = grub_keyboard_getkey ();
- if (code == -1)
- return GRUB_TERM_NO_KEY;
-#ifdef DEBUG_AT_KEYBOARD
- grub_dprintf ("atkeyb", "Detected key 0x%x\n", code);
-#endif
- switch (code)
- {
- case GRUB_KEYBOARD_KEY_CAPS_LOCK:
- at_keyboard_status ^= GRUB_TERM_STATUS_CAPS;
- led_status ^= KEYBOARD_LED_CAPS;
- keyboard_controller_led (led_status);
+ if (! KEYBOARD_ISREADY (grub_inb (KEYBOARD_REG_STATUS)))
+ return -1;
+ at_key = grub_inb (KEYBOARD_REG_DATA);
+ old_led = ps2_state.led_status;
-#ifdef DEBUG_AT_KEYBOARD
- grub_dprintf ("atkeyb", "caps_lock = %d\n", !!(at_keyboard_status & GRUB_KEYBOARD_STATUS_CAPS_LOCK));
-#endif
- return GRUB_TERM_NO_KEY;
- case GRUB_KEYBOARD_KEY_NUM_LOCK:
- at_keyboard_status ^= GRUB_TERM_STATUS_NUM;
- led_status ^= KEYBOARD_LED_NUM;
- keyboard_controller_led (led_status);
-
-#ifdef DEBUG_AT_KEYBOARD
- grub_dprintf ("atkeyb", "num_lock = %d\n", !!(at_keyboard_status & GRUB_KEYBOARD_STATUS_NUM_LOCK));
-#endif
- return GRUB_TERM_NO_KEY;
- case GRUB_KEYBOARD_KEY_SCROLL_LOCK:
- at_keyboard_status ^= GRUB_TERM_STATUS_SCROLL;
- led_status ^= KEYBOARD_LED_SCROLL;
- keyboard_controller_led (led_status);
- return GRUB_TERM_NO_KEY;
- default:
- return grub_term_map_key (code, at_keyboard_status);
- }
+ ret = grub_ps2_process_incoming_byte (&ps2_state, at_key);
+ if (old_led != ps2_state.led_status)
+ keyboard_controller_led (ps2_state.led_status);
+ return ret;
}
static void
grub_keyboard_controller_init (void)
{
- at_keyboard_status = 0;
+ ps2_state.at_keyboard_status = 0;
/* Drain input buffer. */
while (1)
{
@@ -632,13 +264,13 @@ grub_keyboard_controller_init (void)
grub_keyboard_orig_set = query_mode ();
#endif
set_scancodes ();
- keyboard_controller_led (led_status);
+ keyboard_controller_led (ps2_state.led_status);
}
static grub_err_t
grub_keyboard_controller_fini (struct grub_term_input *term __attribute__ ((unused)))
{
- if (current_set == 0)
+ if (ps2_state.current_set == 0)
return GRUB_ERR_NONE;
if (grub_keyboard_orig_set)
write_mode (grub_keyboard_orig_set);
@@ -655,7 +287,7 @@ grub_at_fini_hw (int noreturn __attribute__ ((unused)))
static grub_err_t
grub_at_restore_hw (void)
{
- if (current_set == 0)
+ if (ps2_state.current_set == 0)
return GRUB_ERR_NONE;
/* Drain input buffer. */
@@ -668,7 +300,7 @@ grub_at_restore_hw (void)
grub_inb (KEYBOARD_REG_DATA);
}
set_scancodes ();
- keyboard_controller_led (led_status);
+ keyboard_controller_led (ps2_state.led_status);
return GRUB_ERR_NONE;
}
diff --git a/grub-core/term/ps2.c b/grub-core/term/ps2.c
new file mode 100644
index 00000000000..7ae4e9f2f8c
--- /dev/null
+++ b/grub-core/term/ps2.c
@@ -0,0 +1,387 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2007,2008,2009 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/dl.h>
+#include <grub/misc.h>
+#include <grub/term.h>
+#include <grub/keyboard_layouts.h>
+#include <grub/ps2.h>
+
+#define KEYBOARD_LED_SCROLL (1 << 0)
+#define KEYBOARD_LED_NUM (1 << 1)
+#define KEYBOARD_LED_CAPS (1 << 2)
+
+static const grub_uint8_t set1_mapping[128] =
+ {
+ /* 0x00 */ 0 /* Unused */, GRUB_KEYBOARD_KEY_ESCAPE,
+ /* 0x02 */ GRUB_KEYBOARD_KEY_1, GRUB_KEYBOARD_KEY_2,
+ /* 0x04 */ GRUB_KEYBOARD_KEY_3, GRUB_KEYBOARD_KEY_4,
+ /* 0x06 */ GRUB_KEYBOARD_KEY_5, GRUB_KEYBOARD_KEY_6,
+ /* 0x08 */ GRUB_KEYBOARD_KEY_7, GRUB_KEYBOARD_KEY_8,
+ /* 0x0a */ GRUB_KEYBOARD_KEY_9, GRUB_KEYBOARD_KEY_0,
+ /* 0x0c */ GRUB_KEYBOARD_KEY_DASH, GRUB_KEYBOARD_KEY_EQUAL,
+ /* 0x0e */ GRUB_KEYBOARD_KEY_BACKSPACE, GRUB_KEYBOARD_KEY_TAB,
+ /* 0x10 */ GRUB_KEYBOARD_KEY_Q, GRUB_KEYBOARD_KEY_W,
+ /* 0x12 */ GRUB_KEYBOARD_KEY_E, GRUB_KEYBOARD_KEY_R,
+ /* 0x14 */ GRUB_KEYBOARD_KEY_T, GRUB_KEYBOARD_KEY_Y,
+ /* 0x16 */ GRUB_KEYBOARD_KEY_U, GRUB_KEYBOARD_KEY_I,
+ /* 0x18 */ GRUB_KEYBOARD_KEY_O, GRUB_KEYBOARD_KEY_P,
+ /* 0x1a */ GRUB_KEYBOARD_KEY_LBRACKET, GRUB_KEYBOARD_KEY_RBRACKET,
+ /* 0x1c */ GRUB_KEYBOARD_KEY_ENTER, GRUB_KEYBOARD_KEY_LEFT_CTRL,
+ /* 0x1e */ GRUB_KEYBOARD_KEY_A, GRUB_KEYBOARD_KEY_S,
+ /* 0x20 */ GRUB_KEYBOARD_KEY_D, GRUB_KEYBOARD_KEY_F,
+ /* 0x22 */ GRUB_KEYBOARD_KEY_G, GRUB_KEYBOARD_KEY_H,
+ /* 0x24 */ GRUB_KEYBOARD_KEY_J, GRUB_KEYBOARD_KEY_K,
+ /* 0x26 */ GRUB_KEYBOARD_KEY_L, GRUB_KEYBOARD_KEY_SEMICOLON,
+ /* 0x28 */ GRUB_KEYBOARD_KEY_DQUOTE, GRUB_KEYBOARD_KEY_RQUOTE,
+ /* 0x2a */ GRUB_KEYBOARD_KEY_LEFT_SHIFT, GRUB_KEYBOARD_KEY_BACKSLASH,
+ /* 0x2c */ GRUB_KEYBOARD_KEY_Z, GRUB_KEYBOARD_KEY_X,
+ /* 0x2e */ GRUB_KEYBOARD_KEY_C, GRUB_KEYBOARD_KEY_V,
+ /* 0x30 */ GRUB_KEYBOARD_KEY_B, GRUB_KEYBOARD_KEY_N,
+ /* 0x32 */ GRUB_KEYBOARD_KEY_M, GRUB_KEYBOARD_KEY_COMMA,
+ /* 0x34 */ GRUB_KEYBOARD_KEY_DOT, GRUB_KEYBOARD_KEY_SLASH,
+ /* 0x36 */ GRUB_KEYBOARD_KEY_RIGHT_SHIFT, GRUB_KEYBOARD_KEY_NUMMUL,
+ /* 0x38 */ GRUB_KEYBOARD_KEY_LEFT_ALT, GRUB_KEYBOARD_KEY_SPACE,
+ /* 0x3a */ GRUB_KEYBOARD_KEY_CAPS_LOCK, GRUB_KEYBOARD_KEY_F1,
+ /* 0x3c */ GRUB_KEYBOARD_KEY_F2, GRUB_KEYBOARD_KEY_F3,
+ /* 0x3e */ GRUB_KEYBOARD_KEY_F4, GRUB_KEYBOARD_KEY_F5,
+ /* 0x40 */ GRUB_KEYBOARD_KEY_F6, GRUB_KEYBOARD_KEY_F7,
+ /* 0x42 */ GRUB_KEYBOARD_KEY_F8, GRUB_KEYBOARD_KEY_F9,
+ /* 0x44 */ GRUB_KEYBOARD_KEY_F10, GRUB_KEYBOARD_KEY_NUM_LOCK,
+ /* 0x46 */ GRUB_KEYBOARD_KEY_SCROLL_LOCK, GRUB_KEYBOARD_KEY_NUM7,
+ /* 0x48 */ GRUB_KEYBOARD_KEY_NUM8, GRUB_KEYBOARD_KEY_NUM9,
+ /* 0x4a */ GRUB_KEYBOARD_KEY_NUMMINUS, GRUB_KEYBOARD_KEY_NUM4,
+ /* 0x4c */ GRUB_KEYBOARD_KEY_NUM5, GRUB_KEYBOARD_KEY_NUM6,
+ /* 0x4e */ GRUB_KEYBOARD_KEY_NUMPLUS, GRUB_KEYBOARD_KEY_NUM1,
+ /* 0x50 */ GRUB_KEYBOARD_KEY_NUM2, GRUB_KEYBOARD_KEY_NUM3,
+ /* 0x52 */ GRUB_KEYBOARD_KEY_NUM0, GRUB_KEYBOARD_KEY_NUMDOT,
+ /* 0x54 */ 0, 0,
+ /* 0x56 */ GRUB_KEYBOARD_KEY_102ND, GRUB_KEYBOARD_KEY_F11,
+ /* 0x58 */ GRUB_KEYBOARD_KEY_F12, 0,
+ /* 0x5a */ 0, 0,
+ /* 0x5c */ 0, 0,
+ /* 0x5e */ 0, 0,
+ /* 0x60 */ 0, 0,
+ /* 0x62 */ 0, 0,
+ /* OLPC keys. Just mapped to normal keys. */
+ /* 0x64 */ 0, GRUB_KEYBOARD_KEY_UP,
+ /* 0x66 */ GRUB_KEYBOARD_KEY_DOWN, GRUB_KEYBOARD_KEY_LEFT,
+ /* 0x68 */ GRUB_KEYBOARD_KEY_RIGHT, 0,
+ /* 0x6a */ 0, 0,
+ /* 0x6c */ 0, 0,
+ /* 0x6e */ 0, 0,
+ /* 0x70 */ 0, 0,
+ /* 0x72 */ 0, GRUB_KEYBOARD_KEY_JP_RO,
+ /* 0x74 */ 0, 0,
+ /* 0x76 */ 0, 0,
+ /* 0x78 */ 0, 0,
+ /* 0x7a */ 0, 0,
+ /* 0x7c */ 0, GRUB_KEYBOARD_KEY_JP_YEN,
+ /* 0x7e */ GRUB_KEYBOARD_KEY_KPCOMMA
+ };
+
+static const struct
+{
+ grub_uint8_t from, to;
+} set1_e0_mapping[] =
+ {
+ {0x1c, GRUB_KEYBOARD_KEY_NUMENTER},
+ {0x1d, GRUB_KEYBOARD_KEY_RIGHT_CTRL},
+ {0x35, GRUB_KEYBOARD_KEY_NUMSLASH },
+ {0x38, GRUB_KEYBOARD_KEY_RIGHT_ALT},
+ {0x47, GRUB_KEYBOARD_KEY_HOME},
+ {0x48, GRUB_KEYBOARD_KEY_UP},
+ {0x49, GRUB_KEYBOARD_KEY_PPAGE},
+ {0x4b, GRUB_KEYBOARD_KEY_LEFT},
+ {0x4d, GRUB_KEYBOARD_KEY_RIGHT},
+ {0x4f, GRUB_KEYBOARD_KEY_END},
+ {0x50, GRUB_KEYBOARD_KEY_DOWN},
+ {0x51, GRUB_KEYBOARD_KEY_NPAGE},
+ {0x52, GRUB_KEYBOARD_KEY_INSERT},
+ {0x53, GRUB_KEYBOARD_KEY_DELETE},
+ };
+
+static const grub_uint8_t set2_mapping[256] =
+ {
+ /* 0x00 */ 0, GRUB_KEYBOARD_KEY_F9,
+ /* 0x02 */ 0, GRUB_KEYBOARD_KEY_F5,
+ /* 0x04 */ GRUB_KEYBOARD_KEY_F3, GRUB_KEYBOARD_KEY_F1,
+ /* 0x06 */ GRUB_KEYBOARD_KEY_F2, GRUB_KEYBOARD_KEY_F12,
+ /* 0x08 */ 0, GRUB_KEYBOARD_KEY_F10,
+ /* 0x0a */ GRUB_KEYBOARD_KEY_F8, GRUB_KEYBOARD_KEY_F6,
+ /* 0x0c */ GRUB_KEYBOARD_KEY_F4, GRUB_KEYBOARD_KEY_TAB,
+ /* 0x0e */ GRUB_KEYBOARD_KEY_RQUOTE, 0,
+ /* 0x10 */ 0, GRUB_KEYBOARD_KEY_LEFT_ALT,
+ /* 0x12 */ GRUB_KEYBOARD_KEY_LEFT_SHIFT, 0,
+ /* 0x14 */ GRUB_KEYBOARD_KEY_LEFT_CTRL, GRUB_KEYBOARD_KEY_Q,
+ /* 0x16 */ GRUB_KEYBOARD_KEY_1, 0,
+ /* 0x18 */ 0, 0,
+ /* 0x1a */ GRUB_KEYBOARD_KEY_Z, GRUB_KEYBOARD_KEY_S,
+ /* 0x1c */ GRUB_KEYBOARD_KEY_A, GRUB_KEYBOARD_KEY_W,
+ /* 0x1e */ GRUB_KEYBOARD_KEY_2, 0,
+ /* 0x20 */ 0, GRUB_KEYBOARD_KEY_C,
+ /* 0x22 */ GRUB_KEYBOARD_KEY_X, GRUB_KEYBOARD_KEY_D,
+ /* 0x24 */ GRUB_KEYBOARD_KEY_E, GRUB_KEYBOARD_KEY_4,
+ /* 0x26 */ GRUB_KEYBOARD_KEY_3, 0,
+ /* 0x28 */ 0, GRUB_KEYBOARD_KEY_SPACE,
+ /* 0x2a */ GRUB_KEYBOARD_KEY_V, GRUB_KEYBOARD_KEY_F,
+ /* 0x2c */ GRUB_KEYBOARD_KEY_T, GRUB_KEYBOARD_KEY_R,
+ /* 0x2e */ GRUB_KEYBOARD_KEY_5, 0,
+ /* 0x30 */ 0, GRUB_KEYBOARD_KEY_N,
+ /* 0x32 */ GRUB_KEYBOARD_KEY_B, GRUB_KEYBOARD_KEY_H,
+ /* 0x34 */ GRUB_KEYBOARD_KEY_G, GRUB_KEYBOARD_KEY_Y,
+ /* 0x36 */ GRUB_KEYBOARD_KEY_6, 0,
+ /* 0x38 */ 0, 0,
+ /* 0x3a */ GRUB_KEYBOARD_KEY_M, GRUB_KEYBOARD_KEY_J,
+ /* 0x3c */ GRUB_KEYBOARD_KEY_U, GRUB_KEYBOARD_KEY_7,
+ /* 0x3e */ GRUB_KEYBOARD_KEY_8, 0,
+ /* 0x40 */ 0, GRUB_KEYBOARD_KEY_COMMA,
+ /* 0x42 */ GRUB_KEYBOARD_KEY_K, GRUB_KEYBOARD_KEY_I,
+ /* 0x44 */ GRUB_KEYBOARD_KEY_O, GRUB_KEYBOARD_KEY_0,
+ /* 0x46 */ GRUB_KEYBOARD_KEY_9, 0,
+ /* 0x48 */ 0, GRUB_KEYBOARD_KEY_DOT,
+ /* 0x4a */ GRUB_KEYBOARD_KEY_SLASH, GRUB_KEYBOARD_KEY_L,
+ /* 0x4c */ GRUB_KEYBOARD_KEY_SEMICOLON, GRUB_KEYBOARD_KEY_P,
+ /* 0x4e */ GRUB_KEYBOARD_KEY_DASH, 0,
+ /* 0x50 */ 0, GRUB_KEYBOARD_KEY_JP_RO,
+ /* 0x52 */ GRUB_KEYBOARD_KEY_DQUOTE, 0,
+ /* 0x54 */ GRUB_KEYBOARD_KEY_LBRACKET, GRUB_KEYBOARD_KEY_EQUAL,
+ /* 0x56 */ 0, 0,
+ /* 0x58 */ GRUB_KEYBOARD_KEY_CAPS_LOCK, GRUB_KEYBOARD_KEY_RIGHT_SHIFT,
+ /* 0x5a */ GRUB_KEYBOARD_KEY_ENTER, GRUB_KEYBOARD_KEY_RBRACKET,
+ /* 0x5c */ 0, GRUB_KEYBOARD_KEY_BACKSLASH,
+ /* 0x5e */ 0, 0,
+ /* 0x60 */ 0, GRUB_KEYBOARD_KEY_102ND,
+ /* 0x62 */ 0, 0,
+ /* 0x64 */ 0, 0,
+ /* 0x66 */ GRUB_KEYBOARD_KEY_BACKSPACE, 0,
+ /* 0x68 */ 0, GRUB_KEYBOARD_KEY_NUM1,
+ /* 0x6a */ GRUB_KEYBOARD_KEY_JP_YEN, GRUB_KEYBOARD_KEY_NUM4,
+ /* 0x6c */ GRUB_KEYBOARD_KEY_NUM7, GRUB_KEYBOARD_KEY_KPCOMMA,
+ /* 0x6e */ 0, 0,
+ /* 0x70 */ GRUB_KEYBOARD_KEY_NUM0, GRUB_KEYBOARD_KEY_NUMDOT,
+ /* 0x72 */ GRUB_KEYBOARD_KEY_NUM2, GRUB_KEYBOARD_KEY_NUM5,
+ /* 0x74 */ GRUB_KEYBOARD_KEY_NUM6, GRUB_KEYBOARD_KEY_NUM8,
+ /* 0x76 */ GRUB_KEYBOARD_KEY_ESCAPE, GRUB_KEYBOARD_KEY_NUM_LOCK,
+ /* 0x78 */ GRUB_KEYBOARD_KEY_F11, GRUB_KEYBOARD_KEY_NUMPLUS,
+ /* 0x7a */ GRUB_KEYBOARD_KEY_NUM3, GRUB_KEYBOARD_KEY_NUMMINUS,
+ /* 0x7c */ GRUB_KEYBOARD_KEY_NUMMUL, GRUB_KEYBOARD_KEY_NUM9,
+ /* 0x7e */ GRUB_KEYBOARD_KEY_SCROLL_LOCK, 0,
+ /* 0x80 */ 0, 0,
+ /* 0x82 */ 0, GRUB_KEYBOARD_KEY_F7,
+ };
+
+static const struct
+{
+ grub_uint8_t from, to;
+} set2_e0_mapping[] =
+ {
+ {0x11, GRUB_KEYBOARD_KEY_RIGHT_ALT},
+ {0x14, GRUB_KEYBOARD_KEY_RIGHT_CTRL},
+ {0x4a, GRUB_KEYBOARD_KEY_NUMSLASH},
+ {0x5a, GRUB_KEYBOARD_KEY_NUMENTER},
+ {0x69, GRUB_KEYBOARD_KEY_END},
+ {0x6b, GRUB_KEYBOARD_KEY_LEFT},
+ {0x6c, GRUB_KEYBOARD_KEY_HOME},
+ {0x70, GRUB_KEYBOARD_KEY_INSERT},
+ {0x71, GRUB_KEYBOARD_KEY_DELETE},
+ {0x72, GRUB_KEYBOARD_KEY_DOWN},
+ {0x74, GRUB_KEYBOARD_KEY_RIGHT},
+ {0x75, GRUB_KEYBOARD_KEY_UP},
+ {0x7a, GRUB_KEYBOARD_KEY_NPAGE},
+ {0x7d, GRUB_KEYBOARD_KEY_PPAGE},
+ };
+
+static int
+fetch_key (struct grub_ps2_state *ps2_state, grub_uint8_t at_key, int *is_break)
+{
+ int was_ext = 0;
+ int ret = 0;
+
+ /* May happen if no keyboard is connected. Just ignore this. */
+ if (at_key == 0xff)
+ return -1;
+ if (at_key == 0xe0)
+ {
+ ps2_state->e0_received = 1;
+ return -1;
+ }
+
+ if ((ps2_state->current_set == 2 || ps2_state->current_set == 3) && at_key == 0xf0)
+ {
+ ps2_state->f0_received = 1;
+ return -1;
+ }
+
+ /* Setting LEDs may generate ACKs. */
+ if (at_key == GRUB_AT_ACK)
+ return -1;
+
+ was_ext = ps2_state->e0_received;
+ ps2_state->e0_received = 0;
+
+ switch (ps2_state->current_set)
+ {
+ case 1:
+ *is_break = !!(at_key & 0x80);
+ if (!was_ext)
+ ret = set1_mapping[at_key & 0x7f];
+ else
+ {
+ unsigned i;
+ for (i = 0; i < ARRAY_SIZE (set1_e0_mapping); i++)
+ if (set1_e0_mapping[i].from == (at_key & 0x7f))
+ {
+ ret = set1_e0_mapping[i].to;
+ break;
+ }
+ }
+ break;
+ case 2:
+ *is_break = ps2_state->f0_received;
+ ps2_state->f0_received = 0;
+ if (!was_ext)
+ ret = set2_mapping[at_key];
+ else
+ {
+ unsigned i;
+ for (i = 0; i < ARRAY_SIZE (set2_e0_mapping); i++)
+ if (set2_e0_mapping[i].from == at_key)
+ {
+ ret = set2_e0_mapping[i].to;
+ break;
+ }
+ }
+ break;
+ default:
+ return -1;
+ }
+ if (!ret)
+ {
+ if (was_ext)
+ grub_dprintf ("atkeyb", "Unknown key 0xe0+0x%02x from set %d\n",
+ at_key, ps2_state->current_set);
+ else
+ grub_dprintf ("atkeyb", "Unknown key 0x%02x from set %d\n",
+ at_key, ps2_state->current_set);
+ return -1;
+ }
+ return ret;
+}
+
+/* FIXME: This should become an interrupt service routine. For now
+ it's just used to catch events from control keys. */
+static int
+grub_keyboard_isr (struct grub_ps2_state *ps2_state,
+ grub_keyboard_key_t key, int is_break)
+{
+ if (!is_break)
+ switch (key)
+ {
+ case GRUB_KEYBOARD_KEY_LEFT_SHIFT:
+ ps2_state->at_keyboard_status |= GRUB_TERM_STATUS_LSHIFT;
+ return 1;
+ case GRUB_KEYBOARD_KEY_RIGHT_SHIFT:
+ ps2_state->at_keyboard_status |= GRUB_TERM_STATUS_RSHIFT;
+ return 1;
+ case GRUB_KEYBOARD_KEY_LEFT_CTRL:
+ ps2_state->at_keyboard_status |= GRUB_TERM_STATUS_LCTRL;
+ return 1;
+ case GRUB_KEYBOARD_KEY_RIGHT_CTRL:
+ ps2_state->at_keyboard_status |= GRUB_TERM_STATUS_RCTRL;
+ return 1;
+ case GRUB_KEYBOARD_KEY_RIGHT_ALT:
+ ps2_state->at_keyboard_status |= GRUB_TERM_STATUS_RALT;
+ return 1;
+ case GRUB_KEYBOARD_KEY_LEFT_ALT:
+ ps2_state->at_keyboard_status |= GRUB_TERM_STATUS_LALT;
+ return 1;
+ default:
+ return 0;
+ }
+ else
+ switch (key)
+ {
+ case GRUB_KEYBOARD_KEY_LEFT_SHIFT:
+ ps2_state->at_keyboard_status &= ~GRUB_TERM_STATUS_LSHIFT;
+ return 1;
+ case GRUB_KEYBOARD_KEY_RIGHT_SHIFT:
+ ps2_state->at_keyboard_status &= ~GRUB_TERM_STATUS_RSHIFT;
+ return 1;
+ case GRUB_KEYBOARD_KEY_LEFT_CTRL:
+ ps2_state->at_keyboard_status &= ~GRUB_TERM_STATUS_LCTRL;
+ return 1;
+ case GRUB_KEYBOARD_KEY_RIGHT_CTRL:
+ ps2_state->at_keyboard_status &= ~GRUB_TERM_STATUS_RCTRL;
+ return 1;
+ case GRUB_KEYBOARD_KEY_RIGHT_ALT:
+ ps2_state->at_keyboard_status &= ~GRUB_TERM_STATUS_RALT;
+ return 1;
+ case GRUB_KEYBOARD_KEY_LEFT_ALT:
+ ps2_state->at_keyboard_status &= ~GRUB_TERM_STATUS_LALT;
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+/* If there is a key pending, return it; otherwise return GRUB_TERM_NO_KEY. */
+int
+grub_ps2_process_incoming_byte (struct grub_ps2_state *ps2_state,
+ grub_uint8_t at_key)
+{
+ int code;
+ int is_break = 0;
+
+ code = fetch_key (ps2_state, at_key, &is_break);
+ if (code == -1)
+ return GRUB_TERM_NO_KEY;
+
+ if (grub_keyboard_isr (ps2_state, code, is_break))
+ return GRUB_TERM_NO_KEY;
+ if (is_break)
+ return GRUB_TERM_NO_KEY;
+#ifdef DEBUG_AT_KEYBOARD
+ grub_dprintf ("atkeyb", "Detected key 0x%x\n", code);
+#endif
+ switch (code)
+ {
+ case GRUB_KEYBOARD_KEY_CAPS_LOCK:
+ ps2_state->at_keyboard_status ^= GRUB_TERM_STATUS_CAPS;
+ ps2_state->led_status ^= KEYBOARD_LED_CAPS;
+
+#ifdef DEBUG_AT_KEYBOARD
+ grub_dprintf ("atkeyb", "caps_lock = %d\n", !!(ps2_state->at_keyboard_status & GRUB_KEYBOARD_STATUS_CAPS_LOCK));
+#endif
+ return GRUB_TERM_NO_KEY;
+ case GRUB_KEYBOARD_KEY_NUM_LOCK:
+ ps2_state->at_keyboard_status ^= GRUB_TERM_STATUS_NUM;
+ ps2_state->led_status ^= KEYBOARD_LED_NUM;
+
+#ifdef DEBUG_AT_KEYBOARD
+ grub_dprintf ("atkeyb", "num_lock = %d\n", !!(ps2_state->at_keyboard_status & GRUB_KEYBOARD_STATUS_NUM_LOCK));
+#endif
+ return GRUB_TERM_NO_KEY;
+ case GRUB_KEYBOARD_KEY_SCROLL_LOCK:
+ ps2_state->at_keyboard_status ^= GRUB_TERM_STATUS_SCROLL;
+ ps2_state->led_status ^= KEYBOARD_LED_SCROLL;
+ return GRUB_TERM_NO_KEY;
+ default:
+ return grub_term_map_key (code, ps2_state->at_keyboard_status);
+ }
+}
diff --git a/include/grub/at_keyboard.h b/include/grub/at_keyboard.h
index b4f8ff0a061..b031523eb7d 100644
--- a/include/grub/at_keyboard.h
+++ b/include/grub/at_keyboard.h
@@ -27,10 +27,6 @@
#define KEYBOARD_AT_TRANSLATE 0x40
-#define GRUB_AT_ACK 0xfa
-#define GRUB_AT_NACK 0xfe
-#define GRUB_AT_TRIES 5
-
#define KEYBOARD_ISMAKE(x) !((x) & 0x80)
#define KEYBOARD_ISREADY(x) ((x) & 0x01)
#define KEYBOARD_SCANCODE(x) ((x) & 0x7f)
diff --git a/include/grub/ps2.h b/include/grub/ps2.h
new file mode 100644
index 00000000000..4f2e527e497
--- /dev/null
+++ b/include/grub/ps2.h
@@ -0,0 +1,43 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2007,2008,2009 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_PS2_HEADER
+#define GRUB_PS2_HEADER 1
+
+#include <grub/types.h>
+
+#define GRUB_AT_ACK 0xfa
+#define GRUB_AT_NACK 0xfe
+#define GRUB_AT_TRIES 5
+
+/* Make sure it's zeroed-out and set current_set at init. */
+struct grub_ps2_state
+{
+ int e0_received;
+ int f0_received;
+ grub_uint8_t led_status;
+ short at_keyboard_status;
+ grub_uint8_t current_set;
+};
+
+/* If there is a key pending, return it; otherwise return GRUB_TERM_NO_KEY. */
+int
+grub_ps2_process_incoming_byte (struct grub_ps2_state *ps2_state,
+ grub_uint8_t data);
+
+#endif
--
2.17.1
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