iPXE
basemem.h
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1 #ifndef _BASEMEM_H
2 #define _BASEMEM_H
3 
4 /** @file
5  *
6  * Base memory allocation
7  *
8  */
9 
10 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
11 
12 #include <stdint.h>
13 #include <realmode.h>
14 #include <bios.h>
15 
16 /**
17  * Read the BIOS free base memory counter
18  *
19  * @ret fbms Free base memory counter (in kB)
20  */
21 static inline unsigned int get_fbms ( void ) {
22  uint16_t fbms;
23 
24  get_real ( fbms, BDA_SEG, BDA_FBMS );
25  return fbms;
26 }
27 
28 extern void set_fbms ( unsigned int new_fbms );
29 
30 /* Actually in hidemem.c, but putting it here avoids polluting the
31  * architecture-independent include/hidemem.h.
32  */
33 extern void hide_basemem ( void );
34 
35 #endif /* _BASEMEM_H */
unsigned short uint16_t
Definition: stdint.h:11
FILE_LICENCE(GPL2_OR_LATER_OR_UBDL)
static unsigned int get_fbms(void)
Read the BIOS free base memory counter.
Definition: basemem.h:21
#define BDA_FBMS
Definition: bios.h:9
#define get_real
Definition: libkir.h:151
void hide_basemem(void)
Hide used base memory.
Definition: hidemem.c:107
void set_fbms(unsigned int new_fbms)
Set the BIOS free base memory counter.
Definition: basemem.c:43
#define BDA_SEG
Definition: bios.h:6