startup.h File Reference

Startup of the first core, also known as bootstrap processor (BSP) More...

#include "compiler/fix.h"

Include dependency graph for startup.h:

Functions
void	startup_bsp () ERROR_ON_CALL("The kernel entry point shall never be called from your code!")
	Entry point of your kernel.
void	kernel_init () ERROR_ON_CALL("The kernel init function shall never be called from your code!")
	Initializes the C++ environment and detects system components.
int	main ()
	Kernels main function.
int	main_ap ()
	Entry point for application processors.

Detailed Description

Startup of the first core, also known as bootstrap processor (BSP)

Function Documentation

kernel_init()

void kernel_init

(

)

Initializes the C++ environment and detects system components.

The startup code(both for bootstrap and application processor) jumps to this high level function. After initialization it will call main() or main_ap() respectively

main()

int main

(

)

Kernels main function.

Called after initialization of the system by kernel_init()

Note

This code will only be executed on the booting CPU (i.e., the one with ID 0).

main_ap()

int main_ap

(

)

Entry point for application processors.

Called after initialization of the system by kernel_init()

Note

Code in this function will be executed on all APs (i.e., all CPUs except ID 0)

startup_bsp()

void startup_bsp

(

)

Entry point of your kernel.

Executed by boot loader. Stores Pointer to Multiboot information structure, initializes stack pointer, and finally calls the C++ kernel_init function