From f50815110789a0f8f6e5ca66ffd49b26578791a9 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Mon, 6 Apr 2026 18:43:28 +0200
Subject: kernel: generalize CPU discovery

---
 kernel/kapi/devices.cpp  | 11 +++--------
 kernel/kapi/platform.cpp | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 8 deletions(-)
 create mode 100644 kernel/kapi/platform.cpp

(limited to 'kernel/kapi')

diff --git a/kernel/kapi/devices.cpp b/kernel/kapi/devices.cpp
index b2911b0..dad1fe4 100644
--- a/kernel/kapi/devices.cpp
+++ b/kernel/kapi/devices.cpp
@@ -1,6 +1,5 @@
 #include "kapi/devices.hpp"
 
-#include "kapi/acpi.hpp"
 #include "kapi/system.hpp"
 
 #include "kernel/devices/cpu.hpp"
@@ -38,13 +37,9 @@ namespace kapi::devices
     register_device(bus);
     bus.init();
 
-    auto madt = kapi::acpi::get_table("APIC");
-    if (madt)
-    {
-      auto cpu_major = allocate_major_number();
-      auto cpu = kstd::make_unique<kernel::devices::cpu>(cpu_major);
-      bus.add_child(std::move(cpu));
-    }
+    auto cpu_major = allocate_major_number();
+    auto cpu = kstd::make_unique<kernel::devices::cpu>(cpu_major);
+    bus.add_child(std::move(cpu));
   }
 
   auto get_root_bus() -> bus &
diff --git a/kernel/kapi/platform.cpp b/kernel/kapi/platform.cpp
new file mode 100644
index 0000000..deb72de
--- /dev/null
+++ b/kernel/kapi/platform.cpp
@@ -0,0 +1,32 @@
+#include "kapi/platform.hpp"
+
+#include "kapi/devices.hpp"
+
+#include "kernel/devices/cpu.hpp"
+
+#include <kstd/memory>
+
+#include <cstdint>
+#include <utility>
+
+namespace kapi::platform
+{
+
+  auto cpu_detected(kapi::devices::bus & bus, std::uint64_t hardware_id, bool is_bsp) -> bool
+  {
+    auto static const core_major = kapi::devices::allocate_major_number();
+    auto static const interrupt_controller_major = kapi::devices::allocate_major_number();
+    auto static core_index = 0uz;
+
+    auto core = kstd::make_unique<kernel::devices::cpu::core>(core_major, core_index, hardware_id, is_bsp);
+    auto lapic = kapi::platform::create_core_interrupt_controller(interrupt_controller_major, core_index, hardware_id);
+
+    core->add_child(std::move(lapic));
+    bus.add_child(std::move(core));
+
+    ++core_index;
+
+    return true;
+  }
+
+}  // namespace kapi::platform
\ No newline at end of file
-- 
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