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Added posix code

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This commit is contained in:
Bahadir Balban
2009-09-29 21:55:59 +03:00
parent 54272ccb63
commit f0bb0a4657
478 changed files with 63161 additions and 0 deletions
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45
conts/posix/mm0/include/physmem.h Normal file
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/*
* Physical memory descriptors
*
* Copyright (C) 2007 - 2009 Bahadir Balban
*/
#ifndef __PAGER_PHYSMEM_H__
#define __PAGER_PHYSMEM_H__
/* A compact memory descriptor to determine used/unused pages in the system */
struct page_bitmap {
unsigned long pfn_start;
unsigned long pfn_end;
unsigned int map[];
};
/* Describes a portion of physical memory. */
struct memdesc {
unsigned int start;
unsigned int end;
unsigned int free_cur;
unsigned int free_end;
unsigned int numpages;
};
struct membank {
unsigned long start;
unsigned long end;
unsigned long free;
struct page *page_array;
};
extern struct membank membank[];
/* Describes bitmap of used/unused state for all physical pages */
extern struct page_bitmap page_map;
extern struct memdesc physmem;
/* Sets the global page map as used/unused. Aligns input when needed. */
int set_page_map(struct page_bitmap *pmap, unsigned long start,
int numpages, int val);
struct initdata;
void init_physmem_primary(struct initdata *initdata);
void init_physmem_secondary(struct initdata *initdata, struct membank *membank);
#endif /* __PAGER_PHYSMEM_H__ */