physm.h

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#ifndef __PHYSM_H__
#define __PHYSM_H__
 
#include "xnldr.h"
#include "xnout.h"
#include <Uefi.h>
 
typedef EFI_PHYSICAL_ADDRESS paddr_t;
#define PAGESIZE 4096
#define PADDR_T_MAX UINT64_MAX
 
/*
 * XEInitialisePmmngr - Initialise Physical Memory Manager
 * @param memmap -- Pointer to memory map
 * @param buffer -- Pointer to memory area where
 * physical addresses will get stored
 * @param bufsize -- size of the buffer
 */
extern void XEInitialisePmmngr(const struct EfiMemoryMap memmap, void* buffer, size_t bufsize);
 
/*
 * XEPmmngrAllocate -- Allocates a physical block
 */
extern paddr_t XEPmmngrAllocate();
 
/*
 * XEPmmngrFree -- free up
 * previously allocated physical block
 * @param addr -- Pointer to physical address
 */
extern void XEPmmngrFree(paddr_t addr);
 
/*
 * XEPmmngrList -- list all available physical block
 */
extern void XEPmmngrList();
 
/*
 *XEGetAlstack -- return the allocated stack ptr
 */
extern paddr_t* XEGetAlstack();
 
/*
 * XEGetAlstackptr -- return the previously allocated
 * pointer
 */
extern paddr_t* XEGetAlstackptr();
 
/*
 * XEReserveMemCount -- returns reserved memory area,
 * i.e all allocated memory for the kernel and files
 */
extern uint64_t XEReserveMemCount();
 
/*
 * XEGetPgStack -- return the entire page stack
 */
extern paddr_t* XEGetPgStack();
 
extern paddr_t* XEGetStackPtr();
 
/*
 * XEGetPhysicalStart -- return the starting address
 * from where all usable ram starts
 */
extern uint64_t XEGetPhysicalStart();
 
/*
 * XEGetPhysicalSize -- return the size of entire
 * usable area
 */
extern uint64_t XEGetPhysicalSize();
 
/*
 * XEGetRamSize -- get the total physical memory
 * size
 */
extern uint64_t XEGetRamSize();
#endif