kapi: hook ACPI initialization up to boot process

1 files changed, 31 insertions, 1 deletions

diff --git a/arch/x86_64/kapi/devices.cpp b/arch/x86_64/kapi/devices.cpp
index b15503d..e1773e7 100644
--- a/arch/x86_64/kapi/devices.cpp
+++ b/arch/x86_64/kapi/devices.cpp
@@ -1,5 +1,9 @@
 #include "kapi/devices.hpp"
 
+#include "kapi/acpi.hpp"
+#include "kapi/boot.hpp"
+
+#include "arch/boot/boot.hpp"
 #include "arch/bus/isa.hpp"
 #include "arch/devices/legacy_pit.hpp"
 
@@ -19,7 +23,33 @@ namespace kapi::devices
 
   auto init_platform_devices() -> void
   {
-    kstd::println("[x86_64:devices] Initializing ISA bus...");
+    auto const & mbi = boot::bootstrap_information.mbi;
+    auto system_description_pointer = static_cast<acpi::root_system_description_pointer 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);
+    }
+    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);
+    }
+
+    if (system_description_pointer)
+    {
+      if (!kapi::acpi::init(*system_description_pointer))
+      {
+        kstd::println(kstd::print_sink::stderr, "[x86_64:DEV] ACPI initialization failed. No tables loaded.");
+      }
+    }
+    else
+    {
+      kstd::println(kstd::print_sink::stderr, "[x86_64:DEV] No ACPI RSDP found. Most devices will not be available.");
+    }
+
+    kstd::println("[x86_64:DEV] Initializing ISA bus...");
 
     auto isa_major_number = kapi::devices::allocate_major_number();
     auto isa_bus = kstd::make_unique<arch::bus::isa>(isa_major_number);