From bd585306e31889ee4fce60abb79bc3b3a58e2b84 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Mon, 6 Apr 2026 13:11:15 +0200
Subject: kapi: add basic ACPI support

---
 kernel/include/kernel/memory/block_list_allocator.hpp | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

(limited to 'kernel/include')

diff --git a/kernel/include/kernel/memory/block_list_allocator.hpp b/kernel/include/kernel/memory/block_list_allocator.hpp
index f319097..de89f3b 100644
--- a/kernel/include/kernel/memory/block_list_allocator.hpp
+++ b/kernel/include/kernel/memory/block_list_allocator.hpp
@@ -43,10 +43,10 @@ namespace kernel::memory
   private:
     struct block_header final
     {
-      kstd::units::bytes usable_size;
-      bool free;
-      block_header * next;
-      block_header * prev;
+      kstd::units::bytes usable_size{};
+      bool free{};
+      block_header * next{};
+      block_header * prev{};
     };
 
     //! The size of the metadata required for each allocated block.
@@ -87,4 +87,4 @@ namespace kernel::memory
 
 }  // namespace kernel::memory
 
-#endif
\ No newline at end of file
+#endif
-- 
cgit v1.2.3


From 3dcd14a0570fef3bcc68d7df42fe3ff4cd496f93 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Mon, 6 Apr 2026 14:47:37 +0200
Subject: kapi: hook ACPI initialization up to boot process

---
 kernel/include/kernel/acpi/manager.hpp | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 kernel/include/kernel/acpi/manager.hpp

(limited to 'kernel/include')

diff --git a/kernel/include/kernel/acpi/manager.hpp b/kernel/include/kernel/acpi/manager.hpp
new file mode 100644
index 0000000..fc76685
--- /dev/null
+++ b/kernel/include/kernel/acpi/manager.hpp
@@ -0,0 +1,26 @@
+#ifndef TEACHOS_KERNEL_ACPI_MANAGER_HPP
+#define TEACHOS_KERNEL_ACPI_MANAGER_HPP
+
+#include "kapi/acpi.hpp"
+
+#include <kstd/vector>
+
+namespace kernel::acpi
+{
+
+  struct manager
+  {
+    explicit manager(kapi::acpi::root_system_description_pointer const & sdp);
+
+    auto load_tables() -> bool;
+
+  private:
+    kapi::acpi::root_system_description_pointer const * m_sdp{};
+    kapi::acpi::system_description_table_header const * m_rsdt{};
+    kstd::vector<kapi::acpi::system_description_table_header> m_tables{};
+    bool m_extended{};
+  };
+
+}  // namespace kernel::acpi
+
+#endif
-- 
cgit v1.2.3


From 4d938cd31a35cd4322fe914edd568faa5391c9c2 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Mon, 6 Apr 2026 15:10:04 +0200
Subject: kernel/acpi: implement basic table discovery

---
 kernel/include/kernel/acpi/manager.hpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'kernel/include')

diff --git a/kernel/include/kernel/acpi/manager.hpp b/kernel/include/kernel/acpi/manager.hpp
index fc76685..437d4c8 100644
--- a/kernel/include/kernel/acpi/manager.hpp
+++ b/kernel/include/kernel/acpi/manager.hpp
@@ -3,8 +3,11 @@
 
 #include "kapi/acpi.hpp"
 
+#include <kstd/flat_map>
 #include <kstd/vector>
 
+#include <string_view>
+
 namespace kernel::acpi
 {
 
@@ -17,7 +20,7 @@ namespace kernel::acpi
   private:
     kapi::acpi::root_system_description_pointer const * m_sdp{};
     kapi::acpi::system_description_table_header const * m_rsdt{};
-    kstd::vector<kapi::acpi::system_description_table_header> m_tables{};
+    kstd::flat_map<std::string_view, kapi::acpi::system_description_table_header const *> m_tables{};
     bool m_extended{};
   };
 
-- 
cgit v1.2.3


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
-- 
cgit v1.2.3