src/arch/i386/include/basemem.h

   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 );
  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 */