x86_multiboot/boot/include/mmu.h File Reference

#include "multiboot.h"
#include "structures.h"
#include <stdint.h>

Go to the source code of this file.

Macros
#define	PAGE_SIZE   4096
	Defines the size of a Page. More...

Functions
void	initFreePageList (uintptr_t base, uintptr_t length)
uint32_t *	allocPage ()
	Unsafe page allocator. Allocated a page. More...
void	freePage (uint32_t *page)
	Frees a page in a really unsafe way. More...
void	dumpMmap (uint32_t *mmap_ptr, uint32_t len)
	Despite its unexplicit name, this function initializes the physical memory, preparing the page allocator as well. More...
void	initMmu ()
	Initializes the MMU, creating the kernel's page directory and switching to it. More...
void	mapPageWrapper (page_directory_t *dir, uint32_t paddr, uint32_t vaddr, uint8_t user)

Variables
uint32_t *	firstFreePage
	First free available page. More...

Macro Definition Documentation

PAGE_SIZE

#define PAGE_SIZE   4096

Defines the size of a Page.

Function Documentation

allocPage()

uint32_t * allocPage

(

)

Unsafe page allocator. Allocated a page.

Returns

Virtual address to a free page.

dumpMmap()

void dumpMmap	(	uint32_t *	mmap_ptr,
		uint32_t	len
	)

Despite its unexplicit name, this function initializes the physical memory, preparing the page allocator as well.

Parameters

mmap_ptr	Pointer to a multiboot-compliant memory map
len	Length of the memory map structure

freePage()

void freePage

(

uint32_t *

page

)

Frees a page in a really unsafe way.

Parameters

page	The page to free.

initFreePageList()

void initFreePageList	(	uintptr_t	base,
		uintptr_t	length
	)

initMmu()

void initMmu

(

)

Initializes the MMU, creating the kernel's page directory and switching to it.

mapPageWrapper()

void mapPageWrapper	(	page_directory_t *	dir,
		uint32_t	paddr,
		uint32_t	vaddr,
		uint8_t	user
	)

Variable Documentation

firstFreePage

uint32_t* firstFreePage

First free available page.