diff options
| author | gikidy <gikidy@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-06-05 03:25:09 +0000 |
|---|---|---|
| committer | gikidy <gikidy@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-06-05 03:25:09 +0000 |
| commit | 007c18f5b7a3a105d212443ec6b4245c46006c80 (patch) | |
| tree | 74f5738296950325f0b963d33ad38c4f012556e4 /IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe | |
| parent | 502bfcef5c0535f473e15a3fed04419182509b5f (diff) | |
| download | edk2-platforms-007c18f5b7a3a105d212443ec6b4245c46006c80.tar.xz | |
Enhance Ps2Mouse and Ps2Keyboard driver and fix for random hangs in System waiting for the Key if no KBC is present.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8473 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe')
| -rw-r--r-- | IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c | 17 | ||||
| -rw-r--r-- | IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h | 6 |
2 files changed, 22 insertions, 1 deletions
diff --git a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c index 59c416628c..7c7c0bf27a 100644 --- a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c +++ b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c @@ -216,6 +216,21 @@ KbdControllerDriverStart ( ConsoleIn->ConInEx.UnregisterKeyNotify = KeyboardUnregisterKeyNotify;
InitializeListHead (&ConsoleIn->NotifyList);
+
+ //
+ // Fix for random hangs in System waiting for the Key if no KBC is present in BIOS.
+ //
+ KeyboardRead (ConsoleIn, &Data);
+ if ((KeyReadStatusRegister (ConsoleIn) & (KBC_PARE | KBC_TIM)) == (KBC_PARE | KBC_TIM)) {
+ //
+ // If nobody decodes KBC I/O port, it will read back as 0xFF.
+ // Check the Time-Out and Parity bit to see if it has an active KBC in system
+ //
+ Status = EFI_DEVICE_ERROR;
+ StatusCode = EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_NOT_DETECTED;
+ goto ErrorExit;
+ }
+
//
// Setup the WaitForKey event
//
@@ -355,7 +370,7 @@ ErrorExit: //
if (ConsoleIn != NULL) {
Status1 = EFI_SUCCESS;
- while (!EFI_ERROR (Status1)) {
+ while (!EFI_ERROR (Status1) && (Status != EFI_DEVICE_ERROR)) {
Status1 = KeyboardRead (ConsoleIn, &Data);;
}
}
diff --git a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h index cbfbbda768..fd97f28d2e 100644 --- a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h +++ b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h @@ -181,6 +181,12 @@ InstallPs2KeyboardDriver ( #define SCANCODE_MAX_MAKE 0x60
//
+// Keyboard Controller Status
+//
+#define KBC_PARE 0x80 // Parity Error
+#define KBC_TIM 0x40 // General Time Out
+
+//
// Other functions that are used among .c files
//
/**
|