2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 1999, 2000 by Silicon Graphics
7 * Copyright (C) 2003 by Ralf Baechle
9 #include <linux/export.h>
10 #include <linux/init.h>
12 #include <asm/fixmap.h>
13 #include <asm/pgtable.h>
14 #include <asm/pgalloc.h>
15 #include <asm/tlbflush.h>
17 void pgd_init(unsigned long page)
19 unsigned long *p, *end;
22 #ifdef __PAGETABLE_PMD_FOLDED
23 entry = (unsigned long)invalid_pte_table;
25 entry = (unsigned long)invalid_pmd_table;
28 p = (unsigned long *) page;
29 end = p + PTRS_PER_PGD;
44 #ifndef __PAGETABLE_PMD_FOLDED
45 void pmd_init(unsigned long addr, unsigned long pagetable)
47 unsigned long *p, *end;
49 p = (unsigned long *) addr;
50 end = p + PTRS_PER_PMD;
64 EXPORT_SYMBOL_GPL(pmd_init);
67 pmd_t mk_pmd(struct page *page, pgprot_t prot)
71 pmd_val(pmd) = (page_to_pfn(page) << _PFN_SHIFT) | pgprot_val(prot);
76 void set_pmd_at(struct mm_struct *mm, unsigned long addr,
77 pmd_t *pmdp, pmd_t pmd)
83 void __init pagetable_init(void)
88 /* Initialize the entire pgd. */
89 pgd_init((unsigned long)swapper_pg_dir);
90 #ifndef __PAGETABLE_PMD_FOLDED
91 pmd_init((unsigned long)invalid_pmd_table, (unsigned long)invalid_pte_table);
93 pgd_base = swapper_pg_dir;
97 vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
98 fixrange_init(vaddr, vaddr + FIXADDR_SIZE, pgd_base);