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#include "kapi/acpi.hpp"
#include "arch/boot/boot.hpp"
#include <kstd/memory>
namespace kapi::acpi
{
auto get_root_pointer() -> kstd::observer_ptr<root_system_description_pointer const>
{
auto const & mbi = kapi::boot::bootstrap_information.mbi;
auto system_description_pointer = static_cast<kapi::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);
}
return kstd::make_observer(system_description_pointer);
}
} // namespace kapi::acpi
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