2 files changed, 13 insertions, 11 deletions
diff --git a/drivers/acpi/Acpi.cpp b/drivers/acpi/Acpi.cpp
index 207c9bb..6551c6a 100644
--- a/drivers/acpi/Acpi.cpp
+++ b/drivers/acpi/Acpi.cpp
@@ -3,10 +3,10 @@
 
 const char *Rsdp::signatureString = "RSD PTR ";
 const uint8 Rsdp::validFieldRevision = 2;
-const memAddr Rsdp::romAreaStart = 0xe0000;
-const memAddr Rsdp::romAreaEnd = 0xfffff;
-const memAddr Rsdp::ebdaAreaStart = 0x80000;
-const memAddr Rsdp::ebdaAreaEnd = 0x803ff;
+const uintptr Rsdp::romAreaStart = 0xe0000;
+const uintptr Rsdp::romAreaEnd = 0xfffff;
+const uintptr Rsdp::ebdaAreaStart = 0x80000;
+const uintptr Rsdp::ebdaAreaEnd = 0x803ff;
 const uint8 Rsdp::checksunFieldSize = 20;
 const uint8 Entry::size = 4;
 const uint8 sizeWithoutIcs = 44;
@@ -45,7 +45,7 @@ uint8 Rsdp::checksumCheck() const
     uint8 check = 0;
     for(uint32 offset = 0; offset < checksunFieldSize; offset++)
     {
-        check += *(uint8 *)((memAddr)this + offset);
+        check += *(uint8 *)((uintptr)this + offset);
     }
     return check;
 };
@@ -55,13 +55,15 @@ uint8 DescHeader::checksumCheck() const
     uint8 check = 0;
     for(uint32 offset = 0; offset < length; offset++)
     {
-        check += *(uint8 *)((memAddr)this + offset);
+        check += *(uint8 *)((uintptr)this + offset);
     }
     return check;
 };
 
 const Ics *Madt::getIcs(uint8 index) const
 {
+    if(header.checksumCheck()) return nullptr;
+
     uint32 icsBytesRemain = header.getLength() - ::sizeWithoutIcs;
     uint16 indexAmass = 0;
     const Ics *icsPtr = (Ics *)(&icsBegin);
@@ -73,7 +75,7 @@ const Ics *Madt::getIcs(uint8 index) const
         {
             icsBytesRemain -= icsPtr->getLength();
             indexAmass++;
-            icsPtr = (Ics *)((memAddr)icsPtr + icsPtr->getLength());
+            icsPtr = (Ics *)((uintptr)icsPtr + icsPtr->getLength());
         }
     }
 
diff --git a/drivers/acpi/Acpi.h b/drivers/acpi/Acpi.h
index 6a5c806..506ab99 100644
--- a/drivers/acpi/Acpi.h
+++ b/drivers/acpi/Acpi.h
@@ -154,10 +154,10 @@ class Rsdp
         const static uint8 validFieldRevision;
         // RSDP memory address areas in IA-PC systems
         const static char *signatureString;
-        const static memAddr romAreaStart;
-        const static memAddr romAreaEnd;
-        const static memAddr ebdaAreaStart;
-        const static memAddr ebdaAreaEnd;
+        const static uintptr romAreaStart;
+        const static uintptr romAreaEnd;
+        const static uintptr ebdaAreaStart;
+        const static uintptr ebdaAreaEnd;
    private:
         const static uint8 checksunFieldSize;
         const char signature[8];