hle: kernel: Add initial_process.h header.

src/core/hle/kernel/initial_process.h

@@ -0,0 +1,23 @@
+// Copyright 2022 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+#include "common/literals.h"
+#include "core/hle/kernel/board/nintendo/nx/k_memory_layout.h"
+#include "core/hle/kernel/board/nintendo/nx/k_system_control.h"
+
+namespace Kernel {
+
+using namespace Common::Literals;
+
+constexpr std::size_t InitialProcessBinarySizeMax = 12_MiB;
+
+static inline PAddr GetInitialProcessBinaryPhysicalAddress() {
+    return Kernel::Board::Nintendo::Nx::KSystemControl::Init::GetKernelPhysicalBaseAddress(
+        MainMemoryAddress);
+}
+
+} // namespace Kernel