From b3be36e23de7e5d87a7fe1a0c457c934cc5cb6a9 Mon Sep 17 00:00:00 2001
From: Rafal Kupiec <belliash@codingworkshop.eu.org>
Date: Sun, 24 Mar 2024 15:53:36 +0100
Subject: [PATCH] Map BIOS ROM and VRAM

---
 xtldr/memory.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/xtldr/memory.c b/xtldr/memory.c
index 5daf8d1..72bf476 100644
--- a/xtldr/memory.c
+++ b/xtldr/memory.c
@@ -355,6 +355,14 @@ BlMapEfiMemory(IN OUT PXTBL_PAGE_MAPPING PageMap,
         }
     }
 
+    /* Map BIOS ROM and VRAM */
+    Status = BlMapVirtualMemory(PageMap, NULL, (PVOID)0xA0000, 0x60, LoaderFirmwarePermanent);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Mapping failed */
+        return Status;
+    }
+
     /* Store next valid virtual address and return success */
     *MemoryMapAddress = VirtualAddress;
     return STATUS_EFI_SUCCESS;