From 8583b57c5cb3a7e752a25250b3f7406235802f05 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Wed, 8 Sep 2021 11:01:12 +0200
Subject: OvmfPkg/Microvm: PlatformPei/Platform memory map tweaks

Microvm needs ioapic hobs only.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3599
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Jiewen Yao <Jiewen.yao@intel.com>
---
 OvmfPkg/PlatformPei/Platform.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'OvmfPkg/PlatformPei')

diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
index d3a20122a2..d425a5c429 100644
--- a/OvmfPkg/PlatformPei/Platform.c
+++ b/OvmfPkg/PlatformPei/Platform.c
@@ -159,6 +159,12 @@ MemMapInitialization (
   //
   AddIoMemoryRangeHob (0x0A0000, BASE_1MB);
 
+  if (mHostBridgeDevId == 0xffff /* microvm */) {
+    AddIoMemoryBaseSizeHob (0xFEC00000, SIZE_4KB); /* ioapic #1 */
+    AddIoMemoryBaseSizeHob (0xFEC10000, SIZE_4KB); /* ioapic #2 */
+    return;
+  }
+
   TopOfLowRam = GetSystemMemorySizeBelow4gb ();
   PciExBarBase = 0;
   if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {
-- 
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