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

---
 kapi/kapi/cpu.hpp         |  5 -----
 kapi/kapi/devices.hpp     | 12 ++++++++++--
 kapi/kapi/devices/cpu.hpp | 35 -----------------------------------
 3 files changed, 10 insertions(+), 42 deletions(-)
 delete mode 100644 kapi/kapi/devices/cpu.hpp

(limited to 'kapi')

diff --git a/kapi/kapi/cpu.hpp b/kapi/kapi/cpu.hpp
index 9a50f67e..7337a45a 100644
--- a/kapi/kapi/cpu.hpp
+++ b/kapi/kapi/cpu.hpp
@@ -101,11 +101,6 @@ namespace kapi::cpu
   //! interrupts itself.
   auto init() -> void;
 
-  //! Discover the CPU topology of the platform and attach it to the given CPU bus.
-  //!
-  //! @return true iff. the CPU topology was discovered successfully, false otherwise.
-  auto discover_topology() -> bool;
-
   //! Get the current CPU id.
   //!
   //! @return The id of the CPU core currently executing the call to this function.
diff --git a/kapi/kapi/devices.hpp b/kapi/kapi/devices.hpp
index 8c0c238e..b20e3546 100644
--- a/kapi/kapi/devices.hpp
+++ b/kapi/kapi/devices.hpp
@@ -1,10 +1,8 @@
 #ifndef TEACHOS_KAPI_DEVICES_HPP
 #define TEACHOS_KAPI_DEVICES_HPP
 
-#include <kapi/capabilities/facet_id.hpp>    // IWYU pragma: export
 #include <kapi/devices/bus.hpp>              // IWYU pragma: export
 #include <kapi/devices/bus_protocol.hpp>     // IWYU pragma: export
-#include <kapi/devices/cpu.hpp>              // IWYU pragma: export
 #include <kapi/devices/device.hpp>           // IWYU pragma: export
 #include <kapi/devices/device_registry.hpp>  // IWYU pragma: export
 #include <kapi/devices/driver.hpp>           // IWYU pragma: export
@@ -75,6 +73,16 @@ namespace kapi::devices
   //! Initialize the platform's device tree.
   auto init_platform_devices() -> void;
 
+  //! Discover the platform's CPU topology
+  auto discover_cpu_topology() -> void;
+
+  //! Get the virtual system CPU bus.
+  //!
+  //! @warning This function will panic if the CPU topology has not been discovered.
+  //!
+  //! @return a shared pointer to the CPU bus.
+  auto get_cpu_bus() -> kstd::shared_ptr<bus>;
+
   //! @}
 
 }  // namespace kapi::devices
diff --git a/kapi/kapi/devices/cpu.hpp b/kapi/kapi/devices/cpu.hpp
deleted file mode 100644
index 708c803e..00000000
--- a/kapi/kapi/devices/cpu.hpp
+++ /dev/null
@@ -1,35 +0,0 @@
-#ifndef TEACHOS_KAPI_DEVICES_CPU_HPP
-#define TEACHOS_KAPI_DEVICES_CPU_HPP
-
-#include <kapi/devices/bus.hpp>
-
-#include <cstdint>
-
-namespace kapi::devices
-{
-
-  //! A virtual CPU bus to host all CPUs in the system.
-  struct cpu final : kapi::devices::bus
-  {
-    //! A virtual CPU Core to host all core local devices.
-    struct core final : kapi::devices::bus
-    {
-      core(std::uint64_t index, std::uint64_t hardware_id, bool is_bsp);
-
-      [[nodiscard]] auto hardware_id() const -> std::uint64_t;
-      [[nodiscard]] auto is_bsp() const -> bool;
-      [[nodiscard]] auto index() const noexcept -> std::uint64_t;
-
-    private:
-      std::uint64_t m_index;
-      std::uint64_t m_hardware_id;
-      bool m_is_bsp;
-    };
-
-    //! Create a new CPU.
-    cpu();
-  };
-
-}  // namespace kapi::devices
-
-#endif
\ No newline at end of file
-- 
cgit v1.2.3