diff options
Diffstat (limited to 'arch/score/mm/pgtable.c')
| -rw-r--r-- | arch/score/mm/pgtable.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/score/mm/pgtable.c b/arch/score/mm/pgtable.c new file mode 100644 index 00000000000..10b0962f83d --- /dev/null +++ b/arch/score/mm/pgtable.c @@ -0,0 +1,60 @@ +/* + * 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) +{ + unsigned long vaddr; + pgd_t *pgd_base; + + /* Initialize the entire pgd. */ + pgd_init((unsigned long) swapper_pg_dir); + pgd_init((unsigned long) swapper_pg_dir + + sizeof(pgd_t) * USER_PTRS_PER_PGD); + + pgd_base = swapper_pg_dir; + vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK; +} |