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
2008-11-21 05:55:40 +00:00
parent d4a20ec9dc
commit 05f89b17b8
4 changed files with 32 additions and 8 deletions
--- a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h
+++ b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h
@@ -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