Handout

kernel/boot/startup.h

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+/*! \file
+ * \brief Startup of the first core, also known as bootstrap processor (BSP)
+ * \defgroup Startup "Bootloader and system startup"
+ *
+ */
+#pragma once
+#include "../types.h"
+
+/*! \brief Entry point of your kernel
+ *
+ * \ingroup Startup
+ *
+ * Executed by boot loader.
+ * Stores Pointer to \ref Multiboot information structure,
+ * initializes stack pointer,
+ * switches to long mode
+ * and finally calls the C++ \ref kernel_init function
+ */
+extern "C" void startup_bsp();
+
+/*! \brief Initializes the C++ environment and detects system components
+ *
+ * \ingroup Startup
+ *
+ * The startup code TEMPLATE(m){(both for \ref startup_bsp "bootstrap" and \ref
+ * startup_ap "application processor")} jumps to this high level function. After
+ * initialization it will call \ref main()
+ */
+extern "C" [[noreturn]] void kernel_init();
+
+/*! \brief Kernels main function
+ *
+ * Called after initialization of the system by \ref kernel_init()
+ */
+extern "C" int main();