From f456f1674d48932846eb7b5ec1df630ad67e7e3d Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Mon, 6 Apr 2026 17:24:36 +0200
Subject: kernel/acpi: discover local interrupt controllers

---
 kernel/include/kernel/acpi/manager.hpp |  3 +++
 kernel/include/kernel/devices/cpu.hpp  | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 kernel/include/kernel/devices/cpu.hpp

(limited to 'kernel/include')

diff --git a/kernel/include/kernel/acpi/manager.hpp b/kernel/include/kernel/acpi/manager.hpp
index 437d4c8..fae59a6 100644
--- a/kernel/include/kernel/acpi/manager.hpp
+++ b/kernel/include/kernel/acpi/manager.hpp
@@ -4,6 +4,7 @@
 #include "kapi/acpi.hpp"
 
 #include <kstd/flat_map>
+#include <kstd/memory>
 #include <kstd/vector>
 
 #include <string_view>
@@ -17,6 +18,8 @@ namespace kernel::acpi
 
     auto load_tables() -> bool;
 
+    auto get_table(std::string_view signature) -> kstd::observer_ptr<kapi::acpi::system_description_table_header const>;
+
   private:
     kapi::acpi::root_system_description_pointer const * m_sdp{};
     kapi::acpi::system_description_table_header const * m_rsdt{};
diff --git a/kernel/include/kernel/devices/cpu.hpp b/kernel/include/kernel/devices/cpu.hpp
new file mode 100644
index 0000000..b056665
--- /dev/null
+++ b/kernel/include/kernel/devices/cpu.hpp
@@ -0,0 +1,33 @@
+#ifndef TEACHOS_KERNEL_DEVICES_CPU_HPP
+#define TEACHOS_KERNEL_DEVICES_CPU_HPP
+
+#include "kapi/devices.hpp"
+
+#include <cstddef>
+#include <cstdint>
+
+namespace kernel::devices
+{
+
+  struct cpu final : kapi::devices::bus
+  {
+    struct core final : kapi::devices::bus
+    {
+      explicit core(std::size_t major_number, std::size_t minor_number, std::uint64_t hardware_id, bool is_bsp);
+
+      [[nodiscard]] auto hardware_id() const -> std::uint64_t;
+      [[nodiscard]] auto is_bsp() const -> bool;
+
+    private:
+      std::uint64_t m_hardware_id;
+      bool m_is_bsp;
+    };
+
+    explicit cpu(std::size_t major_number);
+
+    auto probe() -> bool final;
+  };
+
+}  // namespace kernel::devices
+
+#endif
\ No newline at end of file
-- 
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