IMPL: A lot of new changes, see details.

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

4 files changed, 125 insertions, 0 deletions

diff --git a/dev/Boot/src/HEL/ARM64/.gitkeep b/dev/Boot/src/HEL/ARM64/.gitkeep
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/dev/Boot/src/HEL/ARM64/.gitkeep
diff --git a/dev/Boot/src/HEL/ARM64/BootAPI.S b/dev/Boot/src/HEL/ARM64/BootAPI.S
new file mode 100644
index 00000000..a60ad218
--- /dev/null
+++ b/dev/Boot/src/HEL/ARM64/BootAPI.S
@@ -0,0 +1,12 @@
+.global rt_jump_to_address
+
+.text
+
+/**
+ @brief this function setups a stack and then jumps to
+ a function */
+rt_jump_to_address:
+    mov x19, x0
+    mov sp, x2
+    blr x19
+
diff --git a/dev/Boot/src/HEL/ARM64/BootMain.cc b/dev/Boot/src/HEL/ARM64/BootMain.cc
new file mode 100644
index 00000000..fe35ea1b
--- /dev/null
+++ b/dev/Boot/src/HEL/ARM64/BootMain.cc
@@ -0,0 +1,76 @@
+/* -------------------------------------------
+
+	Copyright (C) 2024, Theater Quality Inc, all rights reserved.
+
+------------------------------------------- */
+
+#include <FirmwareKit/EFI/API.h>
+#include <FirmwareKit/EFI.h>
+#include <BootKit/Thread.h>
+#include <BootKit/BootKit.h>
+
+#ifndef kExpectedWidth
+#define kExpectedWidth 844
+#endif
+
+#ifndef kExpectedHeight
+#define kExpectedHeight 390
+#endif
+
+EXTERN EfiBootServices* BS;
+
+STATIC EfiGraphicsOutputProtocol* kGop		 = nullptr;
+STATIC UInt16					  kGopStride = 0U;
+STATIC EfiGUID					  kGopGuid;
+
+/// @brief Main EFI entrypoint.
+/// @param ImageHandle Handle of this image.
+/// @param SystemTable The system table of it.
+/// @return nothing, never returns.
+EFI_EXTERN_C EFI_API Int32 Main(EfiHandlePtr	ImageHandle,
+								EfiSystemTable* SystemTable)
+{
+	InitEFI(SystemTable);
+
+	kGopGuid = EfiGUID(EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID);
+	kGop	 = nullptr;
+
+	BS->LocateProtocol(&kGopGuid, nullptr, (VoidPtr*)&kGop);
+
+	kGopStride = 4;
+
+	Boot::BTextWriter writer;
+
+	for (SizeT i = 0; i < kGop->Mode->MaxMode; ++i)
+	{
+		EfiGraphicsOutputProtocolModeInformation* infoPtr = nullptr;
+		UInt32									  sz	  = 0U;
+
+		kGop->QueryMode(kGop, i, &sz, &infoPtr);
+
+		writer.Write(infoPtr->HorizontalResolution);
+		writer.Write(infoPtr->VerticalResolution);
+		writer.Write("\r");
+
+		if (infoPtr->HorizontalResolution == kExpectedWidth &&
+			infoPtr->VerticalResolution == kExpectedHeight)
+		{
+			kGop->SetMode(kGop, i);
+			break;
+		}
+	}
+
+	Boot::BFileReader reader_kernel(L"minoskrnl.exe", ImageHandle);
+
+	reader_kernel.ReadAll(0);
+
+	if (reader_kernel.Blob())
+	{
+		auto kernel_thread = Boot::BThread(reader_kernel.Blob());
+
+		if (kernel_thread.IsValid())
+			kernel_thread.Start(nullptr, YES);
+	}
+
+	CANT_REACH();
+}
diff --git a/dev/Boot/src/HEL/ARM64/BootPlatform.cc b/dev/Boot/src/HEL/ARM64/BootPlatform.cc
new file mode 100644
index 00000000..df16bd40
--- /dev/null
+++ b/dev/Boot/src/HEL/ARM64/BootPlatform.cc
@@ -0,0 +1,37 @@
+/* -------------------------------------------
+
+	Copyright (C) 2024, Theater Quality Inc, all rights reserved.
+
+------------------------------------------- */
+
+#include <BootKit/Platform.h>
+#include <BootKit/Protocol.h>
+#include <BootKit/BootKit.h>
+
+#ifdef __BOOTLDR_STANDALONE__
+
+using namespace Boot;
+
+EXTERN_C void rt_hlt()
+{
+	while (Yes)
+		;
+}
+
+EXTERN_C void rt_cli()
+{
+}
+
+EXTERN_C void rt_sti()
+{
+}
+
+EXTERN_C void rt_cld()
+{
+}
+
+EXTERN_C void rt_std()
+{
+}
+
+#endif // __BOOTLDR_STANDALONE__