Implementation acpi tables through structs

1 files changed, 71 insertions, 0 deletions

diff --git a/drivers/acpi/acpi.cpp b/drivers/acpi/acpi.cpp
new file mode 100644
index 0000000..41a7aa7
--- /dev/null
+++ b/drivers/acpi/acpi.cpp
@@ -0,0 +1,71 @@
+#include "acpi.h"
+#include "StringOperations.h"
+
+
+Rsdp::Rsdp() : rsdpStruct(nullptr), rsdtObj(nullptr), xsdtObj(nullptr)
+{
+    rsdpStruct = (struct rsdp *)StringOperations::findInMemory(rsdpSign, rsdpRomMemArea);
+
+    if(rsdpStruct == nullptr)
+    {
+        rsdpStruct = (struct rsdp *)StringOperations::findInMemory(rsdpSign, rsdpEbdaMemArea);
+    }
+
+    if(rsdpStruct != nullptr)
+    {
+        rsdtObj = Rsdt(rsdpStruct->rsdtAddress);
+        if(rsdpStruct->revision >= validFieldRevision)
+        {
+            xsdtObj = Xsdt(rsdpStruct->xsdtAddress);
+        }
+    }
+};
+
+const Rsdt *Rsdp::getRsdt() const
+{
+    if(rsdpStruct != nullptr) return &rsdtObj;
+    else return nullptr;
+};
+
+Rsdt::Rsdt(const nulltype null) : entry(null)
+{
+    rsdtStruct = null;
+};
+
+Rsdt::Rsdt(const uint32 addrRsdt) : entry(nullptr)
+{
+    rsdtStruct = (const struct rsdt *)(addrRsdt);
+    if(rsdtStruct != nullptr)
+    {
+        entry = Entry(rsdtStruct->header.length,
+                        (&rsdtStruct->firstEntryAddr));
+    }
+};
+
+const Xsdt *Rsdp::getXsdt() const
+{
+    if(rsdpStruct != nullptr) return &xsdtObj;
+    else return nullptr;
+};
+
+Xsdt::Xsdt(const nulltype null)
+{
+    xsdtStruct = nullptr;
+};
+
+Xsdt::Xsdt(const uint32 xsdt)
+{
+    xsdtStruct = (const struct xsdt *)(xsdt);
+};
+
+Entry::Entry(const uint32 rsdtLength, const uint32 *entryAddress)
+{
+    sizeHeadersInBytes = rsdtLength - sizeof(descHeader);
+    headers = (const struct descHeader **)(entryAddress);
+};
+
+Entry::Entry(const nulltype null)
+{
+    sizeHeadersInBytes = 0;
+    headers = null;
+};