diff options
| author | li-elvin <li-elvin@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-10-11 07:01:22 +0000 |
|---|---|---|
| committer | li-elvin <li-elvin@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-10-11 07:01:22 +0000 |
| commit | 4ccfd30544d1da8f3b5a02293f1feca702dde90a (patch) | |
| tree | 7aaaec115373661fd287ed317287428b1348c737 /IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c | |
| parent | e8c758dc9252adaefa0d13c5702e32e0402d18e8 (diff) | |
| download | edk2-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/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c')
| -rw-r--r-- | IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c | 20 |
1 files changed, 11 insertions, 9 deletions
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;
+ }
}
//
|