25 lines
568 B
C
25 lines
568 B
C
#ifndef __PHYSMEM_H__
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#define __PHYSMEM_H__
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#include "types.h"
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#define PHYSMEM_PAGE_SIZE 4096
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// Page frame allocation
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void physmem_init(void);
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// This retrns a frame number, not an address!
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u64 physmem_allocate_page(void);
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// But this returns an address:
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u64 physmem_allocate_physical(void);
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u64 physmem_page_to_physical(u64 Page);
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u64 physmem_physical_to_page(u64 Physical);
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// Read physical data
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void physmem_read(u64 Base, u64 Size, void *Destination);
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// Return how much memory is free (including not reserved by system)
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u64 physmem_get_free(void);
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#endif
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