From 5deb3317cb51ac52de922bb55f8492624018906d Mon Sep 17 00:00:00 2001 From: Roman Yeryomin Date: Thu, 13 Sep 2012 00:40:35 +0300 Subject: Add realtek target files Signed-off-by: Roman Yeryomin --- .../linux/realtek/files/arch/rlx/mm/pgtable-32.c | 70 ++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 target/linux/realtek/files/arch/rlx/mm/pgtable-32.c (limited to 'target/linux/realtek/files/arch/rlx/mm/pgtable-32.c') diff --git a/target/linux/realtek/files/arch/rlx/mm/pgtable-32.c b/target/linux/realtek/files/arch/rlx/mm/pgtable-32.c new file mode 100644 index 000000000..575e40192 --- /dev/null +++ b/target/linux/realtek/files/arch/rlx/mm/pgtable-32.c @@ -0,0 +1,70 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2003 by Ralf Baechle + */ +#include +#include +#include +#include +#include +#include +#include + +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; +#ifdef CONFIG_HIGHMEM + pgd_t *pgd; + pud_t *pud; + pmd_t *pmd; + pte_t *pte; +#endif + + /* 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; + + /* + * Fixed mappings: + */ + vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK; + fixrange_init(vaddr, 0, pgd_base); + +#ifdef CONFIG_HIGHMEM + /* + * Permanent kmaps: + */ + vaddr = PKMAP_BASE; + fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, pgd_base); + + pgd = swapper_pg_dir + __pgd_offset(vaddr); + pud = pud_offset(pgd, vaddr); + pmd = pmd_offset(pud, vaddr); + pte = pte_offset_kernel(pmd, vaddr); + pkmap_page_table = pte; +#endif +} -- cgit v1.2.3