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6bc9a396 CL |
1 | /* |
2 | * arch/score/mm/pgtable-32.c | |
3 | * | |
4 | * Score Processor version. | |
5 | * | |
6 | * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. | |
7 | * Lennox Wu <lennox.wu@sunplusct.com> | |
8 | * Chen Liqin <liqin.chen@sunplusct.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, see the file COPYING, or write | |
22 | * to the Free Software Foundation, Inc., | |
23 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
24 | */ | |
25 | ||
26 | #include <linux/bootmem.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/pfn.h> | |
29 | #include <linux/mm.h> | |
30 | ||
31 | void pgd_init(unsigned long page) | |
32 | { | |
33 | unsigned long *p = (unsigned long *) page; | |
34 | int i; | |
35 | ||
36 | for (i = 0; i < USER_PTRS_PER_PGD; i += 8) { | |
37 | p[i + 0] = (unsigned long) invalid_pte_table; | |
38 | p[i + 1] = (unsigned long) invalid_pte_table; | |
39 | p[i + 2] = (unsigned long) invalid_pte_table; | |
40 | p[i + 3] = (unsigned long) invalid_pte_table; | |
41 | p[i + 4] = (unsigned long) invalid_pte_table; | |
42 | p[i + 5] = (unsigned long) invalid_pte_table; | |
43 | p[i + 6] = (unsigned long) invalid_pte_table; | |
44 | p[i + 7] = (unsigned long) invalid_pte_table; | |
45 | } | |
46 | } | |
47 | ||
48 | void __init pagetable_init(void) | |
49 | { | |
6bc9a396 | 50 | /* Initialize the entire pgd. */ |
d8aa899b | 51 | pgd_init((unsigned long)swapper_pg_dir); |
6bc9a396 | 52 | } |