git: port from mercurial repo.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>

1 files changed, 87 insertions, 0 deletions

diff --git a/HALKit/AMD64/ACPIManagerAMD64.cpp b/HALKit/AMD64/ACPIManagerAMD64.cpp
new file mode 100644
index 00000000..735726ec
--- /dev/null
+++ b/HALKit/AMD64/ACPIManagerAMD64.cpp
@@ -0,0 +1,87 @@
+/*
+ *	========================================================
+ *
+ *	hCore
+ * 	Copyright Mahrouss Logic, all rights reserved.
+ *
+ * 	========================================================
+ */
+
+#include <HALKit/AMD64/ACPI/ACPIManager.hpp>
+#include <NewKit/String.hpp>
+
+#include <HALKit/AMD64/Processor.hpp>
+
+namespace hCore
+{
+    ACPIManager::ACPIManager(voidPtr rsdPtr)
+        : m_Rsdp(rsdPtr), m_Entries(0)
+    {
+        RSDP* _rsdPtr = reinterpret_cast<RSDP*>(this->m_Rsdp);
+
+        MUST_PASS(_rsdPtr);
+        MUST_PASS(_rsdPtr->Revision >= 2);
+    }
+
+    void ACPIManager::Shutdown() {}
+    void ACPIManager::Reset() {}
+
+    ErrorOr <voidPtr> ACPIManager::Find(const char *signature)
+    {
+        MUST_PASS(m_Rsdp);
+
+        if (!signature)
+            return ErrorOr<voidPtr>{-2};
+
+        if (*signature == 0)
+            return ErrorOr<voidPtr>{-3};
+
+        RSDP *rsdPtr = reinterpret_cast<RSDP*>(this->m_Rsdp);
+
+        auto xsdt = rsdPtr->XsdtAddress;
+        SizeT num = (rsdPtr->Length + sizeof(SDT)) / 8;
+
+        for (Size index = 0; index < num; ++index)
+        {
+            SDT *sdt = reinterpret_cast<SDT*>(xsdt + sizeof(SDT) + index * 8);
+
+            if (!Checksum(sdt->Signature, 4))
+                panic(RUNTIME_CHECK_ACPI);
+
+            if (StringBuilder::Equals(const_cast<const char*>(sdt->Signature), signature))
+                return ErrorOr<voidPtr>(reinterpret_cast<voidPtr>(sdt));
+        }
+
+        return ErrorOr<voidPtr>{-1};
+    }
+
+    bool ACPIManager::Checksum(const char *checksum, SSizeT len)
+    {
+        if (len == 0)
+            return -1;
+
+        char chr = 0;
+
+        for (int index = 0; index < len; ++index)
+        {
+            chr += checksum[index];
+        }
+
+        return chr == 0;
+    }
+
+    void rt_shutdown_acpi_qemu_20(void)
+    {
+        HAL::out16(0xb004, 0x2000);
+    }
+
+    void rt_shutdown_acpi_qemu_30_plus(void)
+    {
+        HAL::out16(0x604, 0x2000);
+    }
+
+    void rt_shutdown_acpi_virtualbox(void)
+    {
+        HAL::out16(0x4004, 0x3400);
+    }
+} // namespace hCore