Internal structures and definitions

Internal structures and definitions used by the PMM. More...

Collaboration diagram for Internal structures and definitions:

Data Structures
struct	pmm_frame_allocator
	A pageframe allocator. More...

Functions
static bool	pmm_initialize_pages (struct multiboot_info *mbt)
	Initialize the static array of page structs. More...

Variables
struct page	pmm_pageframes [TOTAL_PAGEFRAMES_COUNT]
	The static array of all existing pages. More...
static pmm_frame_allocator	g_pmm_allocator
	Allocator for 'classical' pageframes.

Detailed Description

No module outside of the PMM should access these.

Function Documentation

pmm_initialize_pages()

static bool pmm_initialize_pages ( struct multiboot_info *  mbt )

static

Using the bootloader's information, we mark unusable pageframes as being unavailable. The kernel's code is also marked as unavailable, since this distinction is not made by the bootloader.

Finally, we initialize the allocator structs, locating their first respective available address.

Parameters

mbt	The information passed on by the bootloader

Returns

Whether the initialization process succeeded

Variable Documentation

pmm_pageframes

struct page pmm_pageframes[TOTAL_PAGEFRAMES_COUNT]

The array of all existing pageframes.

Note

The arrays's size is hardcoded to be able to fit each and every pageframes (even though only part of them will be available at runtime).