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1da177e4 LT |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (C) 1999, 2000 by Silicon Graphics | |
7 | * Copyright (C) 2003 by Ralf Baechle | |
8 | */ | |
9 | #include <linux/init.h> | |
10 | #include <linux/mm.h> | |
11 | #include <asm/pgtable.h> | |
12 | ||
13 | void pgd_init(unsigned long page) | |
14 | { | |
15 | unsigned long *p, *end; | |
16 | ||
17 | p = (unsigned long *) page; | |
18 | end = p + PTRS_PER_PGD; | |
19 | ||
20 | while (p < end) { | |
21 | p[0] = (unsigned long) invalid_pmd_table; | |
22 | p[1] = (unsigned long) invalid_pmd_table; | |
23 | p[2] = (unsigned long) invalid_pmd_table; | |
24 | p[3] = (unsigned long) invalid_pmd_table; | |
25 | p[4] = (unsigned long) invalid_pmd_table; | |
26 | p[5] = (unsigned long) invalid_pmd_table; | |
27 | p[6] = (unsigned long) invalid_pmd_table; | |
28 | p[7] = (unsigned long) invalid_pmd_table; | |
29 | p += 8; | |
30 | } | |
31 | } | |
32 | ||
33 | void pmd_init(unsigned long addr, unsigned long pagetable) | |
34 | { | |
35 | unsigned long *p, *end; | |
36 | ||
37 | p = (unsigned long *) addr; | |
38 | end = p + PTRS_PER_PMD; | |
39 | ||
40 | while (p < end) { | |
41 | p[0] = (unsigned long)pagetable; | |
42 | p[1] = (unsigned long)pagetable; | |
43 | p[2] = (unsigned long)pagetable; | |
44 | p[3] = (unsigned long)pagetable; | |
45 | p[4] = (unsigned long)pagetable; | |
46 | p[5] = (unsigned long)pagetable; | |
47 | p[6] = (unsigned long)pagetable; | |
48 | p[7] = (unsigned long)pagetable; | |
49 | p += 8; | |
50 | } | |
51 | } | |
52 | ||
53 | void __init pagetable_init(void) | |
54 | { | |
55 | /* Initialize the entire pgd. */ | |
56 | pgd_init((unsigned long)swapper_pg_dir); | |
57 | pmd_init((unsigned long)invalid_pmd_table, (unsigned long)invalid_pte_table); | |
58 | } |