Add DisableLvtInterrupts() for the Local APIC library class.

[mirror_edk2.git] / UefiCpuPkg / Library / BaseXApicLib / BaseXApicLib.c

diff --git a/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c b/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
index 1ac3853071e3dd25db362a06c10bf98db7812f71..79a0fcd413332c3a17dd97c98beec768c86c47ba 100644 (file)
--- a/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
+++ b/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
@@ -460,6 +460,28 @@ ProgramVirtualWireMode (
   WriteLocalApicReg (XAPIC_LVT_LINT1_OFFSET, Lint.Uint32);\r
 }\r
 \r
+/**\r
+  Disable LINT0 & LINT1 interrupts.\r
+\r
+  This function sets the mask flag in the LVT LINT0 & LINT1 registers.\r
+**/\r
+VOID\r
+EFIAPI\r
+DisableLvtInterrupts (\r
+  VOID\r
+  )\r
+{\r
+  LOCAL_APIC_LVT_LINT LvtLint;\r
+\r
+  LvtLint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT0_OFFSET);\r
+  LvtLint.Bits.Mask = 1;\r
+  WriteLocalApicReg (XAPIC_LVT_LINT0_OFFSET, LvtLint.Uint32);\r
+\r
+  LvtLint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT1_OFFSET);\r
+  LvtLint.Bits.Mask = 1;\r
+  WriteLocalApicReg (XAPIC_LVT_LINT1_OFFSET, LvtLint.Uint32);\r
+}\r
+\r
 /**\r
   Read the initial count value from the init-count register.\r
 \r