/* * arch/score/mm/pgtable-32.c * * Score Processor version. * * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. * Lennox Wu <lennox.wu@sunplusct.com> * Chen Liqin <liqin.chen@sunplusct.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see the file COPYING, or write * to the Free Software Foundation, Inc., * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include <linux/bootmem.h> #include <linux/init.h> #include <linux/pfn.h> #include <linux/mm.h> void pgd_init(unsigned long page) { unsigned long *p = (unsigned long *) page; int i; for (i = 0; i < USER_PTRS_PER_PGD; i += 8) { p[i + 0] = (unsigned long) invalid_pte_table; p[i + 1] = (unsigned long) invalid_pte_table; p[i + 2] = (unsigned long) invalid_pte_table; p[i + 3] = (unsigned long) invalid_pte_table; p[i + 4] = (unsigned long) invalid_pte_table; p[i + 5] = (unsigned long) invalid_pte_table; p[i + 6] = (unsigned long) invalid_pte_table; p[i + 7] = (unsigned long) invalid_pte_table; } } void __init pagetable_init(void) { /* Initialize the entire pgd. */ pgd_init((unsigned long)swapper_pg_dir); }