From c3f7b747f02a79b34ed914c54ce74be973b17af1 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Fri, 10 Apr 2026 17:39:14 +0200
Subject: kapi: extract ACPI functionality to libs

---
 arch/x86_64/kapi/acpi.cpp | 10 ++++++----
 arch/x86_64/kapi/cpu.cpp  | 15 +++++++++------
 2 files changed, 15 insertions(+), 10 deletions(-)

(limited to 'arch')

diff --git a/arch/x86_64/kapi/acpi.cpp b/arch/x86_64/kapi/acpi.cpp
index ec38aee..40b7160 100644
--- a/arch/x86_64/kapi/acpi.cpp
+++ b/arch/x86_64/kapi/acpi.cpp
@@ -4,24 +4,26 @@
 
 #include <kstd/memory>
 
+#include <acpi/acpi.hpp>
+
 namespace kapi::acpi
 {
 
-  auto get_root_pointer() -> kstd::observer_ptr<root_system_description_pointer const>
+  auto get_root_pointer() -> kstd::observer_ptr<::acpi::rsdp const>
   {
     auto const & mbi = kapi::boot::bootstrap_information.mbi;
-    auto system_description_pointer = static_cast<kapi::acpi::root_system_description_pointer const *>(nullptr);
+    auto system_description_pointer = static_cast<::acpi::rsdp const *>(nullptr);
 
     if (auto const & xsdp = mbi->maybe_acpi_xsdp())
     {
       auto data = xsdp->pointer().data();
 
-      system_description_pointer = reinterpret_cast<kapi::acpi::root_system_description_pointer const *>(data);
+      system_description_pointer = reinterpret_cast<::acpi::xsdp const *>(data);
     }
     else if (auto const & rsdp = mbi->maybe_acpi_rsdp())
     {
       auto data = rsdp->pointer().data();
-      system_description_pointer = reinterpret_cast<kapi::acpi::root_system_description_pointer const *>(data);
+      system_description_pointer = reinterpret_cast<::acpi::rsdp const *>(data);
     }
 
     return kstd::make_observer(system_description_pointer);
diff --git a/arch/x86_64/kapi/cpu.cpp b/arch/x86_64/kapi/cpu.cpp
index 726ec6a..a836b20 100644
--- a/arch/x86_64/kapi/cpu.cpp
+++ b/arch/x86_64/kapi/cpu.cpp
@@ -3,6 +3,7 @@
 #include "kapi/acpi.hpp"
 #include "kapi/devices.hpp"
 #include "kapi/devices/cpu.hpp"
+#include "kapi/memory.hpp"
 #include "kapi/system.hpp"
 
 #include "arch/cpu/initialization.hpp"
@@ -11,6 +12,8 @@
 #include <kstd/memory>
 #include <kstd/print>
 
+#include <acpi/acpi.hpp>
+
 #include <atomic>
 #include <ranges>
 #include <utility>
@@ -20,8 +23,8 @@ namespace kapi::cpu
 
   namespace
   {
-    constexpr auto candidate_flags = acpi::processor_local_apic::flags::processor_enabled  //
-                                     | acpi::processor_local_apic::flags::online_capable;
+    constexpr auto candidate_flags = ::acpi::processor_local_apic::flags::processor_enabled  //
+                                     | ::acpi::processor_local_apic::flags::online_capable;
   }
 
   auto init() -> void
@@ -49,7 +52,7 @@ namespace kapi::cpu
     auto static const core_major = kapi::devices::allocate_major_number();
     auto static const interrupt_controller_major = kapi::devices::allocate_major_number();
 
-    auto madt = kapi::acpi::get_table<acpi::madt_table_signature>();
+    auto madt = kapi::acpi::get_table<::acpi::madt_table_signature>();
     if (!madt)
     {
       kstd::println("[x86_64:PLT] Failed to find ACPI APIC table");
@@ -57,16 +60,16 @@ namespace kapi::cpu
     }
 
     auto lapic_entries = *madt | std::views::filter([](auto const & entry) {
-      return entry.type() == acpi::multiple_apic_description_table_entry::types::processor_local_apic;
+      return entry.type() == ::acpi::madt_entry::types::processor_local_apic;
     }) | std::views::transform([](auto const & entry) {
-      return static_cast<acpi::processor_local_apic const &>(entry);
+      return static_cast<::acpi::processor_local_apic const &>(entry);
     }) | std::views::filter([](auto const & entry) {
       return static_cast<bool>(entry.active_flags() & candidate_flags);
     });
 
     auto bsp_found = false;
     auto core_count = 0uz;
-    auto local_apic_address = madt->local_interrupt_controller_address();
+    auto local_apic_address = memory::physical_address{madt->local_interrupt_controller_address()};
     auto cpu_bus = kstd::make_unique<devices::cpu>(cpu_major, 0);
 
     for (auto const & apic : lapic_entries)
-- 
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