| \ ***************************************************************************** |
| \ * Copyright (c) 2004, 2008 IBM Corporation |
| \ * All rights reserved. |
| \ * This program and the accompanying materials |
| \ * are made available under the terms of the BSD License |
| \ * which accompanies this distribution, and is available at |
| \ * http://www.opensource.org/licenses/bsd-license.php |
| \ * |
| \ * Contributors: |
| \ * IBM Corporation - initial implementation |
| \ ****************************************************************************/ |
| |
| VARIABLE chosen-memory-ih 0 chosen-memory-ih ! |
| |
| \ + |
| \ Maintain "available" property. |
| \ Sun has a single memory node with "available" property |
| \ and separate memory controller nodes. |
| \ We corespond memory nodes with their respective memory controllers |
| \ and use /chosen/memory as default memory node to hold the "available" map |
| \ NOTE -> /chosen/memory is expected 2B initialized before using claim/release |
| \ + |
| |
| : (chosen-memory-ph) ( -- phandle ) |
| chosen-memory-ih @ ?dup 0= IF |
| s" memory" get-chosen IF |
| decode-int nip nip dup chosen-memory-ih ! |
| ihandle>phandle |
| ELSE 0 THEN |
| ELSE ihandle>phandle THEN |
| ; |
| |
| : (set-available-prop) ( prop plen -- ) |
| s" available" |
| (chosen-memory-ph) ?dup 0<> IF set-property ELSE |
| cr ." Can't find chosen memory node - " |
| ." no available property created" cr |
| 2dup 2dup |
| THEN |
| ; |
| |
| : update-available-property ( available-ptr -- ) |
| dup >r available>size@ |
| 0= r@ available AVAILABLE-SIZE /available * + >= or IF |
| available r> available - encode-bytes (set-available-prop) |
| ELSE |
| r> /available + RECURSE |
| THEN |
| ; |
| |
| : update-available-property available update-available-property ; |
| |
| \ \\\\\\\\\\\\\\ Exported Interface: |
| \ + |
| \ IEEE 1275 implementation: |
| \ claim |
| \ Claim the region with given start address and size (if align parameter is 0); |
| \ alternatively claim any region of given alignment |
| \ + |
| \ Throw an exception if failed |
| \ + |
| : claim ( [ addr ] len align -- base ) claim update-available-property ; |
| |
| \ + |
| \ IEEE 1275 implementation: |
| \ release |
| \ Free the region with given start address and size |
| \ + |
| : release ( addr len -- ) release update-available-property ; |
| |
| update-available-property |
| |