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authorli-elvin <li-elvin@6f19259b-4bc3-4df7-8a09-765794883524>2012-10-11 07:01:22 +0000
committerli-elvin <li-elvin@6f19259b-4bc3-4df7-8a09-765794883524>2012-10-11 07:01:22 +0000
commit4ccfd30544d1da8f3b5a02293f1feca702dde90a (patch)
tree7aaaec115373661fd287ed317287428b1348c737 /IntelFrameworkModulePkg
parente8c758dc9252adaefa0d13c5702e32e0402d18e8 (diff)
downloadedk2-platforms-4ccfd30544d1da8f3b5a02293f1feca702dde90a.tar.xz
Add PcdFastPS2Detection to improve PS2 keyboard driver start performance.
Signed-off-by: Li Elvin <elvin.li@intel.com> Reviewed-by: Yao Jiewen<jiewen.yao@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13820 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'IntelFrameworkModulePkg')
-rw-r--r--IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c192
-rw-r--r--IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c20
-rw-r--r--IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2keyboardDxe.inf3
-rw-r--r--IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c250
-rw-r--r--IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/KeyboardDxe.inf5
-rw-r--r--IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec5
6 files changed, 251 insertions, 224 deletions
diff --git a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
index 4ad80c17c1..05b62f6a8c 100644
--- a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
+++ b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
@@ -1519,16 +1519,18 @@ InitKeyboard (
// Perform a read to cleanup the Status Register's
// output buffer full bits within MAX TRY times
//
- while (!EFI_ERROR (Status) && TryTime < KEYBOARD_MAX_TRY) {
- Status = KeyboardRead (ConsoleIn, &CommandByte);
- TryTime ++;
- }
- //
- // Exceed the max try times. The device may be error.
- //
- if (TryTime == KEYBOARD_MAX_TRY) {
- Status = EFI_DEVICE_ERROR;
- goto Done;
+ if ((KeyReadStatusRegister (ConsoleIn) & KEYBOARD_STATUS_REGISTER_HAS_OUTPUT_DATA)) {
+ while (!EFI_ERROR (Status) && TryTime < KEYBOARD_MAX_TRY) {
+ Status = KeyboardRead (ConsoleIn, &CommandByte);
+ TryTime ++;
+ }
+ //
+ // Exceed the max try times. The device may be error.
+ //
+ if (TryTime == KEYBOARD_MAX_TRY) {
+ Status = EFI_DEVICE_ERROR;
+ goto Done;
+ }
}
//
// We should disable mouse interface during the initialization process
@@ -1543,34 +1545,37 @@ InitKeyboard (
// time initialization
//
if ((KeyReadStatusRegister (ConsoleIn) & KEYBOARD_STATUS_REGISTER_SYSTEM_FLAG) != 0) {
- //
- // 8042 controller is already setup (by myself or by mouse driver):
- // See whether mouse interface is already enabled
- // which determines whether we should enable it later
- //
- //
- // Read the command byte of 8042 controller
- //
- Status = KeyboardCommand (ConsoleIn, KEYBOARD_8042_COMMAND_READ);
- if (EFI_ERROR (Status)) {
- KeyboardError (ConsoleIn, L"\n\r");
- goto Done;
- }
-
- Status = KeyboardRead (ConsoleIn, &CommandByte);
- if (EFI_ERROR (Status)) {
- KeyboardError (ConsoleIn, L"\n\r");
- goto Done;
- }
- //
- // Test the mouse enabling bit
- //
- if ((CommandByte & 0x20) != 0) {
- mEnableMouseInterface = FALSE;
+ if (!PcdGetBool (PcdFastPS2Detection)) {
+ //
+ // 8042 controller is already setup (by myself or by mouse driver):
+ // See whether mouse interface is already enabled
+ // which determines whether we should enable it later
+ //
+ //
+ // Read the command byte of 8042 controller
+ //
+ Status = KeyboardCommand (ConsoleIn, KEYBOARD_8042_COMMAND_READ);
+ if (EFI_ERROR (Status)) {
+ KeyboardError (ConsoleIn, L"\n\r");
+ goto Done;
+ }
+
+ Status = KeyboardRead (ConsoleIn, &CommandByte);
+ if (EFI_ERROR (Status)) {
+ KeyboardError (ConsoleIn, L"\n\r");
+ goto Done;
+ }
+ //
+ // Test the mouse enabling bit
+ //
+ if ((CommandByte & 0x20) != 0) {
+ mEnableMouseInterface = FALSE;
+ } else {
+ mEnableMouseInterface = TRUE;
+ }
} else {
- mEnableMouseInterface = TRUE;
- }
-
+ mEnableMouseInterface = FALSE;
+ }
} else {
//
// 8042 controller is not setup yet:
@@ -1580,36 +1585,38 @@ InitKeyboard (
//
// Disable keyboard and mouse interfaces
//
- Status = KeyboardCommand (ConsoleIn, KEYBOARD_8042_COMMAND_DISABLE_KEYBOARD_INTERFACE);
- if (EFI_ERROR (Status)) {
- KeyboardError (ConsoleIn, L"\n\r");
- goto Done;
- }
-
- Status = KeyboardCommand (ConsoleIn, KEYBOARD_8042_COMMAND_DISABLE_MOUSE_INTERFACE);
- if (EFI_ERROR (Status)) {
- KeyboardError (ConsoleIn, L"\n\r");
- goto Done;
- }
-
- REPORT_STATUS_CODE_WITH_DEVICE_PATH (
- EFI_PROGRESS_CODE,
- EFI_PERIPHERAL_KEYBOARD | EFI_P_KEYBOARD_PC_SELF_TEST,
- ConsoleIn->DevicePath
- );
- //
- // 8042 Controller Self Test
- //
- Status = KeyboardCommand (ConsoleIn, KEYBOARD_8042_COMMAND_CONTROLLER_SELF_TEST);
- if (EFI_ERROR (Status)) {
- KeyboardError (ConsoleIn, L"8042 controller command write error!\n\r");
- goto Done;
- }
-
- Status = KeyboardWaitForValue (ConsoleIn, 0x55);
- if (EFI_ERROR (Status)) {
- KeyboardError (ConsoleIn, L"8042 controller self test failed!\n\r");
- goto Done;
+ if (!PcdGetBool (PcdFastPS2Detection)) {
+ Status = KeyboardCommand (ConsoleIn, KEYBOARD_8042_COMMAND_DISABLE_KEYBOARD_INTERFACE);
+ if (EFI_ERROR (Status)) {
+ KeyboardError (ConsoleIn, L"\n\r");
+ goto Done;
+ }
+
+ Status = KeyboardCommand (ConsoleIn, KEYBOARD_8042_COMMAND_DISABLE_MOUSE_INTERFACE);
+ if (EFI_ERROR (Status)) {
+ KeyboardError (ConsoleIn, L"\n\r");
+ goto Done;
+ }
+
+ REPORT_STATUS_CODE_WITH_DEVICE_PATH (
+ EFI_PROGRESS_CODE,
+ EFI_PERIPHERAL_KEYBOARD | EFI_P_KEYBOARD_PC_SELF_TEST,
+ ConsoleIn->DevicePath
+ );
+ //
+ // 8042 Controller Self Test
+ //
+ Status = KeyboardCommand (ConsoleIn, KEYBOARD_8042_COMMAND_CONTROLLER_SELF_TEST);
+ if (EFI_ERROR (Status)) {
+ KeyboardError (ConsoleIn, L"8042 controller command write error!\n\r");
+ goto Done;
+ }
+
+ Status = KeyboardWaitForValue (ConsoleIn, 0x55);
+ if (EFI_ERROR (Status)) {
+ KeyboardError (ConsoleIn, L"8042 controller self test failed!\n\r");
+ goto Done;
+ }
}
//
// Don't enable mouse interface later
@@ -1865,34 +1872,37 @@ CheckKeyboardConnect (
EFI_STATUS Status;
UINTN WaitForValueTimeOutBcakup;
- Status = EFI_SUCCESS;
//
// enable keyboard itself and wait for its ack
// If can't receive ack, Keyboard should not be connected.
//
- Status = KeyboardWrite (
- ConsoleIn,
- KEYBOARD_KBEN
- );
-
- if (EFI_ERROR (Status)) {
- return FALSE;
- }
- //
- // wait for 1s
- //
- WaitForValueTimeOutBcakup = mWaitForValueTimeOut;
- mWaitForValueTimeOut = KEYBOARD_WAITFORVALUE_TIMEOUT;
- Status = KeyboardWaitForValue (
- ConsoleIn,
- KEYBOARD_CMDECHO_ACK
- );
- mWaitForValueTimeOut = WaitForValueTimeOutBcakup;
-
- if (EFI_ERROR (Status)) {
- return FALSE;
+ if (!PcdGetBool (PcdFastPS2Detection)) {
+ Status = KeyboardWrite (
+ ConsoleIn,
+ KEYBOARD_KBEN
+ );
+
+ if (EFI_ERROR (Status)) {
+ return FALSE;
+ }
+ //
+ // wait for 1s
+ //
+ WaitForValueTimeOutBcakup = mWaitForValueTimeOut;
+ mWaitForValueTimeOut = KEYBOARD_WAITFORVALUE_TIMEOUT;
+ Status = KeyboardWaitForValue (
+ ConsoleIn,
+ KEYBOARD_CMDECHO_ACK
+ );
+ mWaitForValueTimeOut = WaitForValueTimeOutBcakup;
+
+ if (EFI_ERROR (Status)) {
+ return FALSE;
+ }
+
+ return TRUE;
+ } else {
+ return TRUE;
}
-
- return TRUE;
}
diff --git a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c
index c73cf93613..4f87990876 100644
--- a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c
+++ b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c
@@ -263,15 +263,17 @@ KbdControllerDriverStart (
//
// Return code is ignored on purpose.
//
- 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;
+ if (!PcdGetBool (PcdFastPS2Detection)) {
+ 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;
+ }
}
//
diff --git a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2keyboardDxe.inf b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2keyboardDxe.inf
index 61fd036c3c..f2cc8b0061 100644
--- a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2keyboardDxe.inf
+++ b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2keyboardDxe.inf
@@ -68,6 +68,9 @@
[FeaturePcd]
gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPs2KbdExtendedVerification
+[Pcd]
+ gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdFastPS2Detection
+
# [Event]
# ##
# # Event will be signaled for WaitForKey event.
diff --git a/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c b/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
index 3f0f9b699b..4ee20df1f7 100644
--- a/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
+++ b/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
@@ -1037,95 +1037,96 @@ BiosKeyboardReset (
// if not skip step 4&5 and jump to step 6 to selftest KBC and report this
// else go step 4
//
- if ((KeyReadStatusRegister (BiosKeyboardPrivate) & KBC_STSREG_VIA64_SYSF) != 0) {
- //
- // 4
- // CheckMouseStatus to decide enable it later or not
- //
- //
- // Read the command byte of KBC
- //
- Status = KeyboardCommand (
- BiosKeyboardPrivate,
- KBC_CMDREG_VIA64_CMDBYTE_R
- );
-
- if (EFI_ERROR (Status)) {
- Status = EFI_DEVICE_ERROR;
- goto Exit;
- }
-
- Status = KeyboardRead (
- BiosKeyboardPrivate,
- &CommandByte
- );
-
- if (EFI_ERROR (Status)) {
- Status = EFI_DEVICE_ERROR;
- goto Exit;
- }
- //
- // Check mouse enabled or not before
- //
- if ((CommandByte & KB_CMMBYTE_DISABLE_AUX) != 0) {
- MouseEnable = FALSE;
+ if (!PcdGetBool (PcdFastPS2Detection)) {
+ if ((KeyReadStatusRegister (BiosKeyboardPrivate) & KBC_STSREG_VIA64_SYSF) != 0) {
+ //
+ // 4
+ // CheckMouseStatus to decide enable it later or not
+ //
+ //
+ // Read the command byte of KBC
+ //
+ Status = KeyboardCommand (
+ BiosKeyboardPrivate,
+ KBC_CMDREG_VIA64_CMDBYTE_R
+ );
+
+ if (EFI_ERROR (Status)) {
+ Status = EFI_DEVICE_ERROR;
+ goto Exit;
+ }
+
+ Status = KeyboardRead (
+ BiosKeyboardPrivate,
+ &CommandByte
+ );
+
+ if (EFI_ERROR (Status)) {
+ Status = EFI_DEVICE_ERROR;
+ goto Exit;
+ }
+ //
+ // Check mouse enabled or not before
+ //
+ if ((CommandByte & KB_CMMBYTE_DISABLE_AUX) != 0) {
+ MouseEnable = FALSE;
+ } else {
+ MouseEnable = TRUE;
+ }
+ //
+ // 5
+ // disable mouse (via KBC) and Keyborad device
+ //
+ Status = KeyboardCommand (
+ BiosKeyboardPrivate,
+ KBC_CMDREG_VIA64_AUX_DISABLE
+ );
+
+ if (EFI_ERROR (Status)) {
+ Status = EFI_DEVICE_ERROR;
+ goto Exit;
+ }
+
+ Status = KeyboardCommand (
+ BiosKeyboardPrivate,
+ KBC_CMDREG_VIA64_KB_DISABLE
+ );
+
+ if (EFI_ERROR (Status)) {
+ Status = EFI_DEVICE_ERROR;
+ goto Exit;
+ }
} else {
- MouseEnable = TRUE;
- }
- //
- // 5
- // disable mouse (via KBC) and Keyborad device
- //
- Status = KeyboardCommand (
- BiosKeyboardPrivate,
- KBC_CMDREG_VIA64_AUX_DISABLE
- );
-
- if (EFI_ERROR (Status)) {
- Status = EFI_DEVICE_ERROR;
- goto Exit;
- }
-
- Status = KeyboardCommand (
- BiosKeyboardPrivate,
- KBC_CMDREG_VIA64_KB_DISABLE
- );
-
- if (EFI_ERROR (Status)) {
- Status = EFI_DEVICE_ERROR;
- goto Exit;
- }
-
- } else {
- //
- // 6
- // KBC Self Test
- //
- //
- // Report a Progress Code for performing a self test on the keyboard controller
- //
- REPORT_STATUS_CODE (
- EFI_PROGRESS_CODE,
- EFI_PERIPHERAL_KEYBOARD | EFI_P_KEYBOARD_PC_SELF_TEST
- );
-
- Status = KeyboardCommand (
- BiosKeyboardPrivate,
- KBC_CMDREG_VIA64_KBC_SLFTEST
- );
- if (EFI_ERROR (Status)) {
- Status = EFI_DEVICE_ERROR;
- goto Exit;
- }
-
- Status = KeyboardWaitForValue (
- BiosKeyboardPrivate,
- KBC_CMDECHO_KBCSLFTEST_OK,
- KEYBOARD_WAITFORVALUE_TIMEOUT
- );
- if (EFI_ERROR (Status)) {
- Status = EFI_DEVICE_ERROR;
- goto Exit;
+ //
+ // 6
+ // KBC Self Test
+ //
+ //
+ // Report a Progress Code for performing a self test on the keyboard controller
+ //
+ REPORT_STATUS_CODE (
+ EFI_PROGRESS_CODE,
+ EFI_PERIPHERAL_KEYBOARD | EFI_P_KEYBOARD_PC_SELF_TEST
+ );
+
+ Status = KeyboardCommand (
+ BiosKeyboardPrivate,
+ KBC_CMDREG_VIA64_KBC_SLFTEST
+ );
+ if (EFI_ERROR (Status)) {
+ Status = EFI_DEVICE_ERROR;
+ goto Exit;
+ }
+
+ Status = KeyboardWaitForValue (
+ BiosKeyboardPrivate,
+ KBC_CMDECHO_KBCSLFTEST_OK,
+ KEYBOARD_WAITFORVALUE_TIMEOUT
+ );
+ if (EFI_ERROR (Status)) {
+ Status = EFI_DEVICE_ERROR;
+ goto Exit;
+ }
}
}
//
@@ -1321,14 +1322,16 @@ BiosKeyboardReset (
// Done for validating keyboard. Enable keyboard (via KBC)
// and recover the command byte to proper value
//
- Status = KeyboardCommand (
- BiosKeyboardPrivate,
- KBC_CMDREG_VIA64_KB_ENABLE
- );
-
- if (EFI_ERROR (Status)) {
- Status = EFI_DEVICE_ERROR;
- goto Exit;
+ if (!PcdGetBool (PcdFastPS2Detection)) {
+ Status = KeyboardCommand (
+ BiosKeyboardPrivate,
+ KBC_CMDREG_VIA64_KB_ENABLE
+ );
+
+ if (EFI_ERROR (Status)) {
+ Status = EFI_DEVICE_ERROR;
+ goto Exit;
+ }
}
//
@@ -1674,35 +1677,38 @@ CheckKeyboardConnect (
// enable keyboard itself and wait for its ack
// If can't receive ack, Keyboard should not be connected.
//
- Status = KeyboardWrite (
- BiosKeyboardPrivate,
- KBC_INPBUF_VIA60_KBEN
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "[KBD]CheckKeyboardConnect - Keyboard enable failed!\n"));
- REPORT_STATUS_CODE (
- EFI_ERROR_CODE | EFI_ERROR_MINOR,
- EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_CONTROLLER_ERROR
- );
- return FALSE;
- }
+ if (!PcdGetBool (PcdFastPS2Detection)) {
+ Status = KeyboardWrite (
+ BiosKeyboardPrivate,
+ KBC_INPBUF_VIA60_KBEN
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "[KBD]CheckKeyboardConnect - Keyboard enable failed!\n"));
+ REPORT_STATUS_CODE (
+ EFI_ERROR_CODE | EFI_ERROR_MINOR,
+ EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_CONTROLLER_ERROR
+ );
+ return FALSE;
+ }
- Status = KeyboardWaitForValue (
- BiosKeyboardPrivate,
- KBC_CMDECHO_ACK,
- KEYBOARD_WAITFORVALUE_TIMEOUT
- );
+ Status = KeyboardWaitForValue (
+ BiosKeyboardPrivate,
+ KBC_CMDECHO_ACK,
+ KEYBOARD_WAITFORVALUE_TIMEOUT
+ );
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "[KBD]CheckKeyboardConnect - Timeout!\n"));
- REPORT_STATUS_CODE (
- EFI_ERROR_CODE | EFI_ERROR_MINOR,
- EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_CONTROLLER_ERROR
- );
- return FALSE;
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "[KBD]CheckKeyboardConnect - Timeout!\n"));
+ REPORT_STATUS_CODE (
+ EFI_ERROR_CODE | EFI_ERROR_MINOR,
+ EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_CONTROLLER_ERROR
+ );
+ return FALSE;
+ }
+ return TRUE;
+ } else {
+ return TRUE;
}
-
- return TRUE;
}
/**
diff --git a/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/KeyboardDxe.inf b/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/KeyboardDxe.inf
index 28ef29bf1c..ee79f6b607 100644
--- a/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/KeyboardDxe.inf
+++ b/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/KeyboardDxe.inf
@@ -68,4 +68,7 @@
gEfiDevicePathProtocolGuid # PROTOCOL ALWAYS_CONSUMED
[FeaturePcd]
- gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPs2KbdExtendedVerification|FALSE \ No newline at end of file
+ gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPs2KbdExtendedVerification|FALSE
+
+[Pcd]
+ gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdFastPS2Detection \ No newline at end of file
diff --git a/IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec b/IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec
index 6a6228837d..3054bb732a 100644
--- a/IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec
+++ b/IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec
@@ -219,4 +219,7 @@
## The PCD is used to specify the high PMM (Post Memory Manager) size with bytes above 1MB.
# The value should be a multiple of 4KB.
gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdHighPmmMemorySize|0x400000|UINT32|0x3000000a
- \ No newline at end of file
+
+ ## This PCD specifies whether to use the optimized timing for best PS2 detection performance.
+ # Note this PCD could be set to TRUE for best boot performance and set to FALSE for best device compatibility.
+ gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdFastPS2Detection|FALSE|BOOLEAN|0x3000000b \ No newline at end of file