Nigel
13e9beea79
Folders now are alll lower case Started working on the implementation of the Virtual memory manager. Implemented allocate and free page funtionality for as far as I can atm. Implemented the
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
#pragma once
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#include <stddef.h>
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#include <stdint.h>
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extern "C" const uint32_t kernel_begin;
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extern "C" const uint32_t kernel_end;
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#define IS_AVAILABLE_MEM(MEM_TYPE) MEM_TYPE & 0x1
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#define IS_ACPI_MEM(MEM_TYPE) MEM_TYPE & 0x2
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#define IS_RESERVED_MEM(MEM_TYPE) MEM_TYPE & 0x4
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#define IS_NVS_MEMORY(MEM_TYPE) MEM_TYPE & 0x8
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#define IS_BADRAM_MEMORY(MEM_TYPE) MEM_TYPE & 0x10
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struct MemoryInfoBlock {
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uint32_t Base_addr ;
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uint32_t Memory_Size;
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MemoryInfoBlock* next;
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uint8_t type;
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};
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struct BootInfoBlock {
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bool MapIsInvalid;
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uint32_t bootDeviceID ;
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uint32_t GrubModuleCount;
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bool ValidSymbolTable;
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uint32_t SymbolTableAddr;
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uint32_t SymbolTabSize;
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uint32_t SymbolStrSize;
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bool ValidELFHeader;
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bool EnabledVBE;
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bool PhysicalMemoryMapAvailable;
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MemoryInfoBlock* MemoryMap;
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uint32_t map_size;
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uint32_t MemorySize ;
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};
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// TODO Put the BootInfoBlock 1MB above the kernel.
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const uint32_t BootInfoBlock_pptr = (uint32_t)&kernel_end - 0xC0000000 + 0x1;
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const uint32_t MemoryMapHeap_pptr = BootInfoBlock_pptr + sizeof(BootInfoBlock);
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