96 lines
2.7 KiB
C++
96 lines
2.7 KiB
C++
#include "Log.h"
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#include "arch/CPU.h"
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#include "arch/PCI.h"
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#include "arch/Timer.h"
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#include "boot/Init.h"
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#include "config.h"
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#include "fs/InitRD.h"
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#include "fs/devices/DeviceRegistry.h"
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#include "fs/tmpfs/FileSystem.h"
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#include "memory/MemoryManager.h"
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#include "thread/Scheduler.h"
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#include <luna/Units.h>
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extern void set_host_name(StringView);
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void reap_thread()
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{
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while (true)
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{
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CPU::disable_interrupts();
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auto dying_threads = Scheduler::check_for_dying_threads();
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CPU::enable_interrupts();
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dying_threads.consume([](Thread* thread) { Scheduler::reap_thread(thread); });
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kernel_wait_for_event();
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}
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}
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Result<void> init()
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{
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kinfoln("Starting Moon %s, built on %s at %s", MOON_VERSION, __DATE__, __TIME__);
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// Default hostname if nobody from userspace changes it
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set_host_name("moon"_sv);
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kinfoln("Current platform: %s", CPU::platform_string().chars());
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kinfoln("Current processor: %s", CPU::identify().value_or("(unknown)"_sv).chars());
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kinfoln("Total memory: %s", to_dynamic_unit(MemoryManager::total()).release_value().chars());
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kinfoln("Free memory: %s", to_dynamic_unit(MemoryManager::free()).release_value().chars());
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kinfoln("Used memory: %s", to_dynamic_unit(MemoryManager::used()).release_value().chars());
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kinfoln("Reserved memory: %s", to_dynamic_unit(MemoryManager::reserved()).release_value().chars());
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auto root = TRY(TmpFS::FileSystem::create());
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TRY(VFS::mount_root(root));
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TRY(InitRD::populate_vfs());
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TRY(DeviceRegistry::init());
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auto init = TRY(VFS::resolve_path("/bin/init", Credentials {}));
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auto init_thread = TRY(Scheduler::new_userspace_thread(init, "/bin/init"));
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auto reap = Scheduler::new_kernel_thread(reap_thread, "[reap]").release_value();
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Scheduler::set_reap_thread(reap);
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PCI::scan(
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[](const PCI::Device& device) {
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kinfoln("Found PCI mass storage device %.4x:%.4x, at address %u:%u:%u", device.id.vendor, device.id.device,
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device.address.bus, device.address.slot, device.address.function);
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},
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{ .klass = 1 });
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// Disable console logging before transferring control to userspace.
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setup_log(log_debug_enabled(), log_serial_enabled(), false);
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init_thread->wake_up();
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kernel_exit();
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}
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[[noreturn]] void init_wrapper()
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{
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auto rc = init();
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if (rc.has_error()) kerrorln("Runtime error: %s", rc.error_string());
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kernel_exit();
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}
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extern "C" [[noreturn]] void _start()
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{
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Init::check_magic();
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Init::early_init();
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Timer::init();
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Thread::init();
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Scheduler::init();
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Scheduler::new_kernel_thread(init_wrapper, "[kinit]");
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CPU::platform_finish_init();
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CPU::enable_interrupts();
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CPU::idle_loop();
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}
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