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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: nvram.tok | |
4 | \ | |
5 | \ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
6 | \ | |
7 | \ - Do no alter or remove copyright notices | |
8 | \ | |
9 | \ - Redistribution and use of this software in source and binary forms, with | |
10 | \ or without modification, are permitted provided that the following | |
11 | \ conditions are met: | |
12 | \ | |
13 | \ - Redistribution of source code must retain the above copyright notice, | |
14 | \ this list of conditions and the following disclaimer. | |
15 | \ | |
16 | \ - Redistribution in binary form must reproduce the above copyright notice, | |
17 | \ this list of conditions and the following disclaimer in the | |
18 | \ documentation and/or other materials provided with the distribution. | |
19 | \ | |
20 | \ Neither the name of Sun Microsystems, Inc. or the names of contributors | |
21 | \ may be used to endorse or promote products derived from this software | |
22 | \ without specific prior written permission. | |
23 | \ | |
24 | \ This software is provided "AS IS," without a warranty of any kind. | |
25 | \ ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, | |
26 | \ INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A | |
27 | \ PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN | |
28 | \ MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR | |
29 | \ ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR | |
30 | \ DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN | |
31 | \ OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR | |
32 | \ FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE | |
33 | \ DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, | |
34 | \ ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF | |
35 | \ SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
36 | \ | |
37 | \ You acknowledge that this software is not designed, licensed or | |
38 | \ intended for use in the design, construction, operation or maintenance of | |
39 | \ any nuclear facility. | |
40 | \ | |
41 | \ ========== Copyright Header End ============================================ | |
42 | id: @(#)nvram.tok 1.2 07/06/22 | |
43 | purpose: | |
44 | copyright: Copyright 2006 Sun Microsystems, Inc. All Rights Reserved | |
45 | copyright: Use is subject to license terms. | |
46 | ||
47 | Fcode-Version3 | |
48 | ||
49 | " nvram" device-name | |
50 | " nvram" device-type | |
51 | ||
52 | my-space encode-int " reg" property | |
53 | ||
54 | headerless | |
55 | ||
56 | 0 constant nvraw-base | |
57 | h# 1fe0 constant /nvraw-region | |
58 | ||
59 | 0 constant nvfixed-base | |
60 | h# 40 constant /nvfixed-region | |
61 | ||
62 | nvfixed-base /nvfixed-region + constant nvhash-base | |
63 | h# 1ee0 constant /nvhash-region | |
64 | ||
65 | nvhash-base /nvhash-region + constant keystore-base | |
66 | h# 100 constant /keystore-region | |
67 | ||
68 | ||
69 | 0 instance value psize \ Partition size | |
70 | 0 instance value basepos \ Absolute offset of this partition | |
71 | 0 instance value filepos \ Current position in partition | |
72 | ||
73 | h# f2 constant nvram-read-fun | |
74 | h# f3 constant nvram-write-fun | |
75 | ||
76 | h# 80 constant fast-trap | |
77 | ||
78 | -1 h# 1fff - constant page#mask | |
79 | ||
80 | : >ra ( va -- ra ) | |
81 | dup >physical drop ( vaddr papage ) | |
82 | swap page#mask invert and or ( ra ) | |
83 | ; | |
84 | ||
85 | : hget ( offset buf,len fun# trap# -- len status ) | |
86 | >r >r swap >ra swap ( offset raddr len ) | |
87 | \ 3 args in, 2 out | |
88 | 3 2 r> r> htrap ( len status )( R: ) | |
89 | ; | |
90 | ||
91 | alias hput hget | |
92 | ||
93 | : nvram-read ( offset addr len -- #bytes errno ) | |
94 | nvram-read-fun fast-trap hget | |
95 | ; | |
96 | ||
97 | : nvram-write ( offset addr len -- #bytes errno ) | |
98 | nvram-write-fun fast-trap hput | |
99 | ; | |
100 | ||
101 | : $= ( adr,len adr2,len -- same? ) | |
102 | rot tuck <> if 3drop false exit then comp 0= | |
103 | ; | |
104 | ||
105 | : clip-range ( len -- len' ) psize filepos - min ; | |
106 | : bump-pos ( n -- ) filepos + psize min to filepos ; | |
107 | ||
108 | external | |
109 | ||
110 | : open ( -- true ) | |
111 | nvhash-base /nvhash-region | |
112 | my-args " fixed" $= if 2drop nvfixed-base /nvfixed-region then | |
113 | my-args " keys" $= if 2drop keystore-base /keystore-region then | |
114 | my-args " raw" $= if 2drop nvraw-base /nvraw-region then | |
115 | to psize to basepos ( ) | |
116 | 0 to filepos ( ) | |
117 | true ( true ) | |
118 | ; | |
119 | ||
120 | : close ( -- ) ; | |
121 | ||
122 | : sync ( -- ) ; | |
123 | ||
124 | : seek ( lo hi -- fail? ) | |
125 | drop dup 0< if psize + then ( offset ) | |
126 | dup 0 psize within if ( offset ) | |
127 | to filepos false ( false ) | |
128 | else ( offset ) | |
129 | drop true ( true ) | |
130 | then ( failed? ) | |
131 | ; | |
132 | ||
133 | : read ( adr len -- len' ) | |
134 | clip-range basepos filepos + -rot nvram-read if | |
135 | drop 0 | |
136 | then | |
137 | dup bump-pos | |
138 | ; | |
139 | ||
140 | : write ( adr len -- len' ) | |
141 | clip-range basepos filepos + -rot nvram-write if | |
142 | drop 0 | |
143 | then | |
144 | dup bump-pos | |
145 | ; | |
146 | ||
147 | \ return the number of bytes available.. | |
148 | : size ( -- n ) psize filepos - ; | |
149 | ||
150 | end0 |