From dd8dfa3e674d05927e9ed4b7efcb634a634bfdcc Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Fri, 10 Apr 2026 10:30:32 +0200
Subject: kapi: move CPU to kapi

---
 kernel/kapi/cpu.cpp         | 19 -------------------
 kernel/kapi/devices.cpp     |  7 ++-----
 kernel/kapi/devices/cpu.cpp | 31 +++++++++++++++++++++++++++++++
 3 files changed, 33 insertions(+), 24 deletions(-)
 create mode 100644 kernel/kapi/devices/cpu.cpp

(limited to 'kernel/kapi')

diff --git a/kernel/kapi/cpu.cpp b/kernel/kapi/cpu.cpp
index d632628..13de584 100644
--- a/kernel/kapi/cpu.cpp
+++ b/kernel/kapi/cpu.cpp
@@ -1,17 +1,9 @@
 #include "kapi/cpu.hpp"
 
-#include "kapi/devices.hpp"
 #include "kapi/system.hpp"
 
-#include "kernel/devices/cpu.hpp"
-
-#include <kstd/memory>
 #include <kstd/print>
 
-#include <cstddef>
-#include <cstdint>
-#include <utility>
-
 namespace kapi::cpu
 {
 
@@ -40,15 +32,4 @@ namespace kapi::cpu
     }
   }
 
-  auto core_detected(kapi::devices::bus & bus, std::size_t major, std::size_t minor, std::uint64_t hardware_id,
-                     bool is_bsp, kstd::unique_ptr<devices::device> core_interrupt_controller) -> bool
-  {
-    auto core = kstd::make_unique<kernel::devices::cpu::core>(major, minor, hardware_id, is_bsp);
-
-    core->add_child(std::move(core_interrupt_controller));
-    bus.add_child(std::move(core));
-
-    return true;
-  }
-
 }  // namespace kapi::cpu
\ No newline at end of file
diff --git a/kernel/kapi/devices.cpp b/kernel/kapi/devices.cpp
index dad1fe4..b8aa44b 100644
--- a/kernel/kapi/devices.cpp
+++ b/kernel/kapi/devices.cpp
@@ -1,8 +1,8 @@
 #include "kapi/devices.hpp"
 
+#include "kapi/cpu.hpp"
 #include "kapi/system.hpp"
 
-#include "kernel/devices/cpu.hpp"
 #include "kernel/devices/root_bus.hpp"
 
 #include <kstd/flat_map>
@@ -17,7 +17,6 @@
 
 namespace kapi::devices
 {
-
   namespace
   {
     auto constinit next_major_number = std::atomic_size_t{1};
@@ -37,9 +36,7 @@ namespace kapi::devices
     register_device(bus);
     bus.init();
 
-    auto cpu_major = allocate_major_number();
-    auto cpu = kstd::make_unique<kernel::devices::cpu>(cpu_major);
-    bus.add_child(std::move(cpu));
+    kapi::cpu::discover_topology();
   }
 
   auto get_root_bus() -> bus &
diff --git a/kernel/kapi/devices/cpu.cpp b/kernel/kapi/devices/cpu.cpp
new file mode 100644
index 0000000..9de5f94
--- /dev/null
+++ b/kernel/kapi/devices/cpu.cpp
@@ -0,0 +1,31 @@
+#include "kapi/devices/cpu.hpp"
+
+#include "kapi/devices.hpp"
+
+#include <cstddef>
+#include <cstdint>
+
+namespace kapi::devices
+{
+
+  cpu::core::core(std::size_t major_number, std::size_t minor_number, std::uint64_t hardware_id, bool is_bsp)
+      : kapi::devices::bus{major_number, minor_number, "cpu_core"}
+      , m_hardware_id{hardware_id}
+      , m_is_bsp{is_bsp}
+  {}
+
+  auto cpu::core::hardware_id() const -> std::uint64_t
+  {
+    return m_hardware_id;
+  }
+
+  auto cpu::core::is_bsp() const -> bool
+  {
+    return m_is_bsp;
+  }
+
+  cpu::cpu(std::size_t major, std::size_t minor)
+      : kapi::devices::bus{major, minor, "cpu"}
+  {}
+
+}  // namespace kapi::devices
\ No newline at end of file
-- 
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