From 36248bb63a396dfea762d5b2cf028bf4b7a2b62e Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Tue, 28 Jul 2026 13:09:08 +0200
Subject: x86_64: split lapic according to UDM

---
 arch/x86_64/kapi/devices.cpp | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

(limited to 'arch/x86_64/kapi/devices.cpp')

diff --git a/arch/x86_64/kapi/devices.cpp b/arch/x86_64/kapi/devices.cpp
index 748e0a6a..04b6fa2d 100644
--- a/arch/x86_64/kapi/devices.cpp
+++ b/arch/x86_64/kapi/devices.cpp
@@ -1,11 +1,21 @@
 #include <kapi/devices.hpp>
 
+#include <arch/bus/cpu.hpp>
 #include <arch/devices/init.hpp>
 #include <arch/drivers/init.hpp>
 
+#include <kapi/system.hpp>
+
+#include <kstd/memory.hpp>
+
 namespace kapi::devices
 {
 
+  namespace
+  {
+    auto static constinit cpu_bus = kstd::shared_ptr<arch::bus::cpu>{};
+  }
+
   auto init_platform_drivers() -> void
   {
     arch::drivers::init_legacy_drivers();
@@ -17,4 +27,25 @@ namespace kapi::devices
     arch::devices::init_legacy_devices();
   }
 
+  auto get_cpu_bus() -> kstd::shared_ptr<bus>
+  {
+    if (!cpu_bus)
+    {
+      system::panic("[x86_64:DEV] The CPU topology has not yet been initialized!");
+    }
+
+    return cpu_bus;
+  }
+
+  auto discover_cpu_topology() -> void
+  {
+    if (cpu_bus)
+    {
+      system::panic("[x86_64:DEV] The CPU topology has already been initialized!");
+    }
+
+    cpu_bus = kstd::make_shared<arch::bus::cpu>();
+    cpu_bus->facet<kapi::devices::bus_protocol>()->enumerate(*cpu_bus);
+  }
+
 }  // namespace kapi::devices
\ No newline at end of file
-- 
cgit v1.2.3