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