pgtable.c revision d8aa899bb27ad7879ab9e621365e04ada2745a65 
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
31void 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
48void __init pagetable_init(void)
49{
50	/* Initialize the entire pgd. */
51	pgd_init((unsigned long)swapper_pg_dir);
52}
53