From 159bdd2cac3f967c31c2f416fbc542e0277ec860 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Fri, 16 Jan 2026 13:55:51 +0100
Subject: kapi/system: introduce memory_initialized hook

---
 arch/x86_64/CMakeLists.txt   |  1 +
 arch/x86_64/kapi/system.cpp  | 14 ++++++++++++++
 kapi/include/kapi/system.hpp |  4 ++++
 kernel/src/main.cpp          |  1 +
 4 files changed, 20 insertions(+)
 create mode 100644 arch/x86_64/kapi/system.cpp

diff --git a/arch/x86_64/CMakeLists.txt b/arch/x86_64/CMakeLists.txt
index 413b5aa..9ea10e9 100644
--- a/arch/x86_64/CMakeLists.txt
+++ b/arch/x86_64/CMakeLists.txt
@@ -15,6 +15,7 @@ target_sources("x86_64" PRIVATE
     "kapi/cio.cpp"
     "kapi/cpu.cpp"
     "kapi/memory.cpp"
+    "kapi/system.cpp"
 
     # Low-level bootstrap
     "src/boot/boot32.S"
diff --git a/arch/x86_64/kapi/system.cpp b/arch/x86_64/kapi/system.cpp
new file mode 100644
index 0000000..5bcae4d
--- /dev/null
+++ b/arch/x86_64/kapi/system.cpp
@@ -0,0 +1,14 @@
+#include "kapi/system.hpp"
+
+#include <kstd/print>
+
+namespace kapi::system
+{
+
+  auto memory_initialized() -> void
+  {
+    kstd::println("[x86_64:SYS] TODO: initialize Interrupt Descriptor Table.");
+    kstd::println("[x86_64:SYS] TODO: reload Global Descriptor Table.");
+  }
+
+}  // namespace kapi::system
\ No newline at end of file
diff --git a/kapi/include/kapi/system.hpp b/kapi/include/kapi/system.hpp
index 6c5683a..e5c43c5 100644
--- a/kapi/include/kapi/system.hpp
+++ b/kapi/include/kapi/system.hpp
@@ -15,6 +15,10 @@ namespace kapi::system
   //! @param message The message associated with the panic
   [[noreturn]] auto panic(std::string_view message, std::source_location = std::source_location::current()) -> void;
 
+  //! @qualifier platform-defined
+  //! A hook that runs once the memory subsystem has been initialized.
+  auto memory_initialized() -> void;
+
 }  // namespace kapi::system
 
 #endif
diff --git a/kernel/src/main.cpp b/kernel/src/main.cpp
index 8732fa2..d69903d 100644
--- a/kernel/src/main.cpp
+++ b/kernel/src/main.cpp
@@ -11,6 +11,7 @@ auto main() -> int
 
   kapi::memory::init();
   kstd::println("[OS] Memory subsystem initialized.");
+  kapi::system::memory_initialized();
 
   kapi::system::panic("Returning from kernel main!");
 }
-- 
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