From b84c4c9d8c90f3d3fd5a60de282278912fad2f04 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Thu, 2 Apr 2026 13:59:27 +0200
Subject: x86_64/devices: implement ISA bus stub

---
 kernel/include/kernel/devices/root_bus.hpp | 4 +++-
 kernel/src/devices/root_bus.cpp            | 4 ++--
 kernel/src/main.cpp                        | 3 +++
 3 files changed, 8 insertions(+), 3 deletions(-)

(limited to 'kernel')

diff --git a/kernel/include/kernel/devices/root_bus.hpp b/kernel/include/kernel/devices/root_bus.hpp
index f7bfbfb..d92914d 100644
--- a/kernel/include/kernel/devices/root_bus.hpp
+++ b/kernel/include/kernel/devices/root_bus.hpp
@@ -8,6 +8,8 @@
 #include <kstd/print>
 #include <kstd/vector>
 
+#include <atomic>
+
 namespace kernel::devices
 {
 
@@ -24,7 +26,7 @@ namespace kernel::devices
   private:
     kstd::vector<kstd::unique_ptr<device>> m_children{};
     kstd::vector<kstd::observer_ptr<device>> m_observers{};
-    bool m_initialized{};
+    std::atomic_flag m_initialized{};
   };
 
 }  // namespace kernel::devices
diff --git a/kernel/src/devices/root_bus.cpp b/kernel/src/devices/root_bus.cpp
index a7f3c1a..75b5b80 100644
--- a/kernel/src/devices/root_bus.cpp
+++ b/kernel/src/devices/root_bus.cpp
@@ -24,7 +24,7 @@ namespace kernel::devices
     auto observer = m_observers.emplace_back(child.get());
     m_children.push_back(std::move(child));
 
-    if (m_initialized)
+    if (m_initialized.test())
     {
       kstd::println("Initializing child device '{}'", observer->name());
       if (!observer->init())
@@ -41,7 +41,7 @@ namespace kernel::devices
 
   auto root_bus::init() -> bool
   {
-    if (m_initialized)
+    if (m_initialized.test_and_set())
     {
       kapi::system::panic("[kernel:devices] Root bus already initialized!");
     }
diff --git a/kernel/src/main.cpp b/kernel/src/main.cpp
index 9d6028d..eaaf87f 100644
--- a/kernel/src/main.cpp
+++ b/kernel/src/main.cpp
@@ -183,6 +183,9 @@ auto main() -> int
   kapi::devices::init();
   kstd::println("[OS] System root bus initialized.");
 
+  kapi::devices::init_platform_devices();
+  kstd::println("[OS] Platform devices initialized.");
+
   kapi::boot_modules::init();
   kstd::println("[OS] Boot module registry initialized.");
 
-- 
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