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1. Add Max Try Times check to clear Ps2Kbd status register. If exceed the max try times, the device may be error. 

2. To follow PI spec, PciCfg PPI doesn't require ASSERT for the unalign PCI IO access.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6659 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
lgao4 2008-11-21 05:55:40 +00:00
parent d4a20ec9dc
commit 05f89b17b8
4 changed files with 32 additions and 8 deletions
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16
IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
View File

@ -1642,14 +1642,16 @@ InitKeyboard (
EFI_STATUS Status1;
UINT8 CommandByte;
EFI_PS2_POLICY_PROTOCOL *Ps2Policy;
UINT32 TryTime;
Status = EFI_SUCCESS;
mEnableMouseInterface = TRUE;
TryTime = 0;
//
// Get Ps2 policy to set this
//
Status = gBS->LocateProtocol (
gBS->LocateProtocol (
&gEfiPs2PolicyProtocolGuid,
NULL,
(VOID **) &Ps2Policy
@ -1663,10 +1665,18 @@ InitKeyboard (
//
// Perform a read to cleanup the Status Register's
// output buffer full bits
// output buffer full bits within MAX TRY times
//
while (!EFI_ERROR (Status)) {
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

1
IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h
View File

@ -155,6 +155,7 @@ InstallPs2KeyboardDriver (
#define KEYBOARD_KBEN 0xF4
#define KEYBOARD_CMDECHO_ACK 0xFA
#define KEYBOARD_MAX_TRY 256 // 256
#define KEYBOARD_TIMEOUT 65536 // 0.07s
#define KEYBOARD_WAITFORVALUE_TIMEOUT 1000000 // 1s
#define KEYBOARD_BAT_TIMEOUT 4000000 // 4s

7
IntelFrameworkModulePkg/Universal/PcatSingleSegmentPciCfgPei/PcatSingleSegmentPciCfgPei.inf
View File

@ -55,6 +55,13 @@
gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPciCfgDisable
gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPciCfg2Disable
[FixedPcd.common]
##
# Disable ASSERT for unalign PCI IO access according to PI Volume 1 and PeiCis Spec
# Spec has not this requirement.
##
gEfiMdePkgTokenSpaceGuid.PcdDebugPropertyMask|0x0E
[Depex]
TRUE

6
MdeModulePkg/Universal/PcatSingleSegmentPciCfg2Pei/PcatSingleSegmentPciCfg2Pei.inf
View File

@ -51,3 +51,9 @@
[Depex]
TRUE
[FixedPcd.common]
##
# Disable ASSERT for unalign PCI IO access according to PI Spec Volume 1
# Spec has not this requirement.
##
gEfiMdePkgTokenSpaceGuid.PcdDebugPropertyMask|0x0E