90 lines
2.6 KiB
Diff
90 lines
2.6 KiB
Diff
From c4b8bec5fee4e30a165fd14a188cf3ab8eccd095 Mon Sep 17 00:00:00 2001
|
|
From: Vladimir Serbinenko <phcoder@gmail.com>
|
|
Date: Tue, 9 May 2017 14:27:52 +0200
|
|
Subject: [PATCH 036/198] at_keyboard: Fix falco chromebook case.
|
|
|
|
EC is slow, so we need few delays for it to toggle the bits correctly.
|
|
|
|
Command to enable clock and keyboard were not sent.
|
|
---
|
|
grub-core/term/at_keyboard.c | 23 ++++++++++++++---------
|
|
include/grub/at_keyboard.h | 2 ++
|
|
2 files changed, 16 insertions(+), 9 deletions(-)
|
|
|
|
diff --git a/grub-core/term/at_keyboard.c b/grub-core/term/at_keyboard.c
|
|
index 3ab4e205f..f0a986eb1 100644
|
|
--- a/grub-core/term/at_keyboard.c
|
|
+++ b/grub-core/term/at_keyboard.c
|
|
@@ -40,6 +40,8 @@ grub_keyboard_controller_init (void);
|
|
static void
|
|
keyboard_controller_wait_until_ready (void)
|
|
{
|
|
+ /* 50 us would be enough but our current time resolution is 1ms. */
|
|
+ grub_millisleep (1);
|
|
while (! KEYBOARD_COMMAND_ISREADY (grub_inb (KEYBOARD_REG_STATUS)));
|
|
}
|
|
|
|
@@ -50,10 +52,11 @@ wait_ack (void)
|
|
grub_uint8_t ack;
|
|
|
|
endtime = grub_get_time_ms () + 20;
|
|
- do
|
|
+ do {
|
|
+ keyboard_controller_wait_until_ready ();
|
|
ack = grub_inb (KEYBOARD_REG_DATA);
|
|
- while (ack != GRUB_AT_ACK && ack != GRUB_AT_NACK
|
|
- && grub_get_time_ms () < endtime);
|
|
+ } while (ack != GRUB_AT_ACK && ack != GRUB_AT_NACK
|
|
+ && grub_get_time_ms () < endtime);
|
|
return ack;
|
|
}
|
|
|
|
@@ -135,12 +138,10 @@ query_mode (void)
|
|
if (!e)
|
|
return 0;
|
|
|
|
- keyboard_controller_wait_until_ready ();
|
|
-
|
|
- do
|
|
+ do {
|
|
+ keyboard_controller_wait_until_ready ();
|
|
ret = grub_inb (KEYBOARD_REG_DATA);
|
|
- while (ret == GRUB_AT_ACK);
|
|
-
|
|
+ } while (ret == GRUB_AT_ACK);
|
|
/* QEMU translates the set even in no-translate mode. */
|
|
if (ret == 0x43 || ret == 1)
|
|
return 1;
|
|
@@ -169,7 +170,11 @@ set_scancodes (void)
|
|
#else
|
|
|
|
grub_keyboard_controller_write (grub_keyboard_controller_orig
|
|
- & ~KEYBOARD_AT_TRANSLATE);
|
|
+ & ~KEYBOARD_AT_TRANSLATE
|
|
+ & ~KEYBOARD_AT_DISABLE);
|
|
+
|
|
+ keyboard_controller_wait_until_ready ();
|
|
+ grub_outb (KEYBOARD_COMMAND_ENABLE, KEYBOARD_REG_DATA);
|
|
|
|
write_mode (2);
|
|
ps2_state.current_set = query_mode ();
|
|
diff --git a/include/grub/at_keyboard.h b/include/grub/at_keyboard.h
|
|
index b031523eb..bcb4d9ba7 100644
|
|
--- a/include/grub/at_keyboard.h
|
|
+++ b/include/grub/at_keyboard.h
|
|
@@ -23,9 +23,11 @@
|
|
#define KEYBOARD_COMMAND_ISREADY(x) !((x) & 0x02)
|
|
#define KEYBOARD_COMMAND_READ 0x20
|
|
#define KEYBOARD_COMMAND_WRITE 0x60
|
|
+#define KEYBOARD_COMMAND_ENABLE 0xf4
|
|
#define KEYBOARD_COMMAND_REBOOT 0xfe
|
|
|
|
#define KEYBOARD_AT_TRANSLATE 0x40
|
|
+#define KEYBOARD_AT_DISABLE 0x10
|
|
|
|
#define KEYBOARD_ISMAKE(x) !((x) & 0x80)
|
|
#define KEYBOARD_ISREADY(x) ((x) & 0x01)
|
|
--
|
|
2.14.3
|
|
|