ofw/core/availpm.fth

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\ Hypervisor Software File: availpm.fth
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purpose: "available" property for memory node
copyright: Copyright 1990-1994 Sun Microsystems, Inc.  All Rights Reserved

headers

" /memory" find-device

headerless

: make-phys-memlist  ( adr len node-adr -- adr len' false )
   node-range                    ( adr len  base size )
[ '#adr-cells @ 2 = ] [if]
   \   node-range pages>phys-adr,len encode-reg encode+ false
\   pages>phys-adr,len  nip       ( adr len base size )
   pages>phys-adr,len			( adr len base.lo base.hi size )
   2>r   encode-int encode+   2r>	( adr len base.hi size )
[then]
   >r  encode-int encode+
   r>  encode-int encode+
   false
;

headers

5 actions
action:  drop  
   0 0 encode-bytes                              ( adr 0 )
   physavail  ['] make-phys-memlist  find-node   ( adr len  prev 0 )
   2drop  over here - allot                      ( adr len )
;
action:  drop 2drop  ;
action:  ;
action:  drop  ;
action:  drop  ;

" available" make-property-name  use-actions

: size  ( -- d.#bytes )
   current-device >r
   my-voc push-device
   0 0  2>r                       (  )              ( r: d.size )
   get-unit  0=  if               ( adr len )       ( r: d.size )
      begin  dup  while           ( adr len )       ( r: d.size )
[ '#adr-cells @ 2 = ] [if]
	 decode-int drop          ( adr' len' )     ( r: d.size )
[then]
	 decode-int drop          ( adr' len' )     ( r: d.size )
	 decode-int  u>d          ( adr' len' ud )  ( r: d.size )
	 2r> d+ 2>r               ( adr' len' )     ( r: d.size' )
      repeat                      ( adr 0 )         ( r: d.size' )
      2drop                       (  )              ( r: d.size' )
   then  2r>                      ( d.#bytes )
   r> push-device
;

device-end