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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: ramforth.fth | |
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: @(#)ramforth.fth 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 | headers | |
48 | false value forth-in-ram? | |
49 | : (romforth) ( -- ) ; immediate | |
50 | ||
51 | : mem-base ( -- pa.lo pa.hi ) | |
52 | hi-memory-base @ pageshift lshift ( base+ ) | |
53 | 8meg round-down obmem ( pa.lo pa.hi ) | |
54 | ; | |
55 | \ : mem-top ( -- pa.lo pa.hi ) | |
56 | \ hi-memory-base @ hi-memory-size @ + ( #pages ) | |
57 | \ pageshift lshift ( bytes ) | |
58 | \ 8meg round-up obmem ( pa.lo pa.hi ) | |
59 | \ ; | |
60 | ||
61 | : RAMphys ( -- pa.lo pa.hi ) | |
62 | mem-base >r 2meg + h# 1.0000 - r> | |
63 | ; | |
64 | ||
65 | : ROMphys ( -- pa.lo pa.hi ) mem-base ; | |
66 | ||
67 | \ | |
68 | \ XXX need to flush-tlb after a demap perm?? | |
69 | \ | |
70 | : (flush-tlb-entry) ( va i&d? -- ) | |
71 | swap >r if ['] flush-tlb-page 3 else ['] demap-dtlb 1 then ( acf tlb ) | |
72 | 0 r@ unmap-perm-addr drop ( acf ) | |
73 | r> swap execute ( ) | |
74 | ; | |
75 | ||
76 | \ After this step we have no locked DTLB entries. | |
77 | : flush-temporary-mappings ( -- ) | |
78 | 0 true (flush-tlb-entry) | |
79 | RAMbase true (flush-tlb-entry) | |
80 | mem-base drop true (flush-tlb-entry) | |
81 | ROMbase 4meg round-down false (flush-tlb-entry) | |
82 | ; | |
83 | ||
84 | struct | |
85 | /x field >mmu-miss-pa | |
86 | constant /mmu-miss-info | |
87 | /x (align) here /mmu-miss-info allot origin- constant mmu-info | |
88 | ||
89 | headers | |
90 | : (cacheforth) ( -- ) | |
91 | true to forth-in-ram? | |
92 | ||
93 | \ fixup the root-vpt-pa instructions | |
94 | RAMphys drop pagesize - setup-root-vpt | |
95 | ||
96 | rombase mmu-info + >r | |
97 | max-#cpus /mmu-miss-area * dup mem-claim drop dup r> >mmu-miss-pa x! ( pa ) | |
98 | mid@ /mmu-miss-area * + set-cpu-miss-area ( ) | |
99 | ||
100 | \ Create the VPT entries for RAMbase, RAMsize | |
101 | RAMphys RAMbase RAMsize-start map-pages | |
102 | ||
103 | \ Create the VPT entries for monvirtsize, 4M | |
104 | mem-base monvirtbase 4meg map-pages | |
105 | ||
106 | enable-map-flushing | |
107 | ||
108 | flush-temporary-mappings | |
109 | ; | |
110 | ||
111 | : cacheforth ( -- ) | |
112 | forth-in-ram? if exit then | |
113 | (cacheforth) | |
114 | ; | |
115 | ||
116 | headerless | |
117 | ||
118 | stand-init: Copying ROM to RAM | |
119 | cacheforth | |
120 | ; | |
121 | ||
122 | fload ${BP}/arch/sun/dynamic-user.fth \ S | |
123 | ||
124 | headers |