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Annotation of qemu/roms/SLOF/slof/fs/packages/obp-tftp.fs, revision 1.1.1.1

1.1       root        1: \ *****************************************************************************
                      2: \ * Copyright (c) 2004, 2008 IBM Corporation
                      3: \ * All rights reserved.
                      4: \ * This program and the accompanying materials
                      5: \ * are made available under the terms of the BSD License
                      6: \ * which accompanies this distribution, and is available at
                      7: \ * http://www.opensource.org/licenses/bsd-license.php
                      8: \ *
                      9: \ * Contributors:
                     10: \ *     IBM Corporation - initial implementation
                     11: \ ****************************************************************************/
                     12: 
                     13: s" obp-tftp" device-name
                     14: 
                     15: INSTANCE VARIABLE ciregs-buffer
                     16: 
                     17: : open ( -- okay? ) 
                     18:     ciregs-size alloc-mem ciregs-buffer ! 
                     19:     true
                     20: ;
                     21: 
                     22: : load ( addr -- size )
                     23: 
                     24:     \ Save old client interface register 
                     25:     ciregs ciregs-buffer @ ciregs-size move
                     26: 
                     27:     s" bootargs" get-chosen 0= IF 0 0 THEN >r >r
                     28:     s" bootpath" get-chosen 0= IF 0 0 THEN >r >r
                     29: 
                     30:     \ Set bootpath to current device
                     31:     my-parent ihandle>phandle node>path encode-string
                     32:     s" bootpath" set-chosen
                     33: 
                     34:     \ Generate arg string for snk like
                     35:     \ "netboot load-addr length filename"
                     36:     (u.) s" netboot " 2swap $cat s"  60000000 " $cat
                     37: 
                     38:     \ Allocate 1720 bytes to store the BOOTP-REPLY packet
                     39:     6B8 alloc-mem dup >r (u.) $cat s"  " $cat
                     40:     huge-tftp-load @ IF s"  1 " ELSE s"  0 " THEN $cat
                     41:     \ Add desired TFTP-Blocksize as additional argument
                     42:     s" 1432 " $cat
                     43:     \ Add OBP-TFTP Bootstring argument, e.g. "10.128.0.1,bootrom.bin,10.128.40.1"
                     44:     my-args $cat
                     45: 
                     46:     \ Call SNK netboot loadr
                     47:     (client-exec) dup 0< IF drop 0 THEN
                     48: 
                     49:     \ Restore to old client interface register 
                     50:     ciregs-buffer @ ciregs ciregs-size move
                     51: 
                     52:     \ Recover buffer address of BOOTP-REPLY packet
                     53:     r>
                     54: 
                     55:     r> r> over IF s" bootpath" set-chosen ELSE 2drop THEN
                     56:     r> r> over IF s" bootargs" set-chosen ELSE 2drop THEN
                     57: 
                     58:     \ Store BOOTP-REPLY packet as property
                     59:     s" /chosen" select-dev
                     60:     dup 6B8 encode-bytes s" bootp-response" property
                     61:     device-end
                     62: 
                     63:     \ free buffer
                     64:     6B8 free-mem
                     65: ;
                     66: 
                     67: : close ( -- )
                     68:    ciregs-buffer @ ciregs-size free-mem 
                     69: ;
                     70: 
                     71: : ping  ( -- )
                     72:    s" ping " my-args $cat (client-exec)
                     73: ;

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