X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=IntelFrameworkModulePkg%2FCsm%2FBiosThunk%2FKeyboardDxe%2FBiosKeyboard.c;h=ec525891dc7a5659af89d1151a008ee1cc84fd4f;hp=7308523ad8bd079ff45ad9560926d97001bd0816;hb=621d1f45adf4b9ba73adfefc41e4b17b89623aad;hpb=cc9a430c519a5c9eba5b1ed3799055af6668194c

diff --git a/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c b/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
index 7308523ad8..ec525891dc 100644
--- a/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
+++ b/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
@@ -1842,8 +1842,10 @@ BiosKeyboardTimerHandler (
   //
   // Clear the CTRL and ALT BDA flag
   //
-  KbFlag1 = *((UINT8 *) (UINTN) 0x417);  // read the STATUS FLAGS 1
-  KbFlag2 = *((UINT8 *) (UINTN) 0x418); // read STATUS FLAGS 2
+  ACCESS_PAGE0_CODE (
+    KbFlag1 = *((UINT8 *) (UINTN) 0x417); // read the STATUS FLAGS 1
+    KbFlag2 = *((UINT8 *) (UINTN) 0x418); // read STATUS FLAGS 2
+  );
 
   DEBUG_CODE (
     {
@@ -1911,11 +1913,12 @@ BiosKeyboardTimerHandler (
   //
   // Clear left alt and left ctrl BDA flag
   //
-  KbFlag2 &= ~(KB_LEFT_ALT_PRESSED | KB_LEFT_CTRL_PRESSED);
-  *((UINT8 *) (UINTN) 0x418) = KbFlag2;
-  KbFlag1 &= ~0x0C;                      
-  *((UINT8 *) (UINTN) 0x417) = KbFlag1; 
-
+  ACCESS_PAGE0_CODE (
+    KbFlag2 &= ~(KB_LEFT_ALT_PRESSED | KB_LEFT_CTRL_PRESSED);
+    *((UINT8 *) (UINTN) 0x418) = KbFlag2;
+    KbFlag1 &= ~0x0C;
+    *((UINT8 *) (UINTN) 0x417) = KbFlag1;
+  );
   
   //
   // Output EFI input key and shift/toggle state