70 lines
2 KiB
Forth
70 lines
2 KiB
Forth
\ *****************************************************************************
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\ * Copyright (c) 2011 IBM Corporation
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\ * All rights reserved.
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\ * This program and the accompanying materials
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\ * are made available under the terms of the BSD License
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\ * which accompanies this distribution, and is available at
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\ * http://www.opensource.org/licenses/bsd-license.php
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\ *
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\ * Contributors:
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\ * IBM Corporation - initial implementation
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\ ****************************************************************************/
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defer set-boot-device
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defer add-boot-device
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: add-boot-aliases ( str -- )
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2dup add-boot-device ( $str )
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MAX-ALIAS 1 DO
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2dup i $cathex 2dup ( $str $strN $strN )
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find-alias 0 > IF ( $str $strN false | $result )
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drop strdup add-boot-device ( $str )
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ELSE 2drop THEN
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LOOP
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2drop
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;
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\ strict boot order is enabled if the last word in qemu,boot-list is "HALT".
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: is-strict-boot? ( bl-str bl-len -- strict? )
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dup 4 > IF
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+ 5 - 5 s" HALT" str=
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ELSE
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s" HALT" str=
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THEN
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;
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: qemu-read-bootlist ( -- )
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\ See if QEMU has set exact boot device list
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" qemu,boot-list" get-chosen IF
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1- \ Ignore the trailing NUL character
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2dup set-boot-device
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is-strict-boot? IF EXIT THEN
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ELSE
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0 0 set-boot-device
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THEN
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" qemu,boot-device" get-chosen not IF
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\ No boot list set from qemu, so check nvram
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" boot-device" evaluate swap drop 0= IF
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\ Not set in nvram too, set default disk/cdrom alias
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" disk" add-boot-aliases
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" cdrom" add-boot-aliases
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" net" add-boot-aliases
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THEN
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EXIT
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THEN
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0 ?DO
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dup i + c@ CASE
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0 OF ENDOF
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[char] a OF ENDOF
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[char] b OF ENDOF
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[char] c OF " disk" add-boot-aliases ENDOF
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[char] d OF " cdrom" add-boot-aliases ENDOF
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[char] n OF " net" add-boot-aliases ENDOF
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ENDCASE cr
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LOOP
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drop
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;
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' qemu-read-bootlist to read-bootlist
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