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