32 lines
856 B
C
32 lines
856 B
C
#ifndef PMM_INTERNALS_H_
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#define PMM_INTERNALS_H_
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#define BLOCKS_PER_BYTE 8
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#define BLOCK_SIZE 4096
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#define BLOCK_ALIGN BLOCK_SIZE
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/* Macros for testing and aligning memory. */
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#define IS_ALIGNED(addr, align) !((addr) & ~((align) - 1))
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#define ALIGN(addr, align) (((addr) & ~((align) - 1)) + (align))
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/*
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* Internal variables:
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*
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* mem_size - Size of availabe memory in KB
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* used_blocks - Number of used blocks of size BLOCK_SIZE
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* max_blocks - Maximum number of blocks of size BLOCK_SIZE
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* pmmap - pointer to a data structure containing info about the
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* state of each block (Physical Memory Map)
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* pmmap_size - Number of double words occupied by pmmap
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*
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*/
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static size_t mem_size;
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static uint32_t used_blocks;
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static uint32_t max_blocks;
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static uint32_t *pmmap;
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static size_t pmmap_size;
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#endif
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