Handout

kernel/boot/startup.cc

@@ -0,0 +1,49 @@
+#include "startup.h"
+
+#include "../arch/acpi.h"
+#include "../arch/apic.h"
+#include "../arch/core.h"
+#include "../arch/idt.h"
+#include "../arch/pic.h"
+#include "../compiler/libc.h"
+#include "../debug/output.h"
+#include "../interrupt/handlers.h"
+
+extern "C" [[noreturn]] void kernel_init() {
+	// Setup and load Interrupt Description Table (IDT)
+	initInterruptHandlers();
+
+	// Initialize PICs
+	PIC::initialize();
+
+	// Call global constructors
+	CSU::initializer();
+
+	// Initialize ACPI
+	if (!ACPI::init()) {
+		DBG_VERBOSE << "No ACPI!";
+		Core::die();
+	}
+	// Initialize APIC (using ACPI)
+	if (!APIC::init()) {
+		DBG_VERBOSE << "APIC Initialization failed";
+		Core::die();
+	}
+
+	// Initialize the Bootstrap Processor
+	Core::init();
+
+	// Go to main function
+	main();
+
+	// Exit CPU
+	DBG_VERBOSE << "CPU core " << Core::getID() << " (BSP) shutdown." << endl;
+	Core::exit();
+	// Call global destructors
+	CSU::finalizer();
+
+	// wait forever
+	while (true) {
+		Core::die();
+	}
+}