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
pgd_init(unsigned long page)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
pagetable_init(void)48 void __init pagetable_init(void)
49 {
50 /* Initialize the entire pgd. */
51 pgd_init((unsigned long)swapper_pg_dir);
52 }
53