projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 002547b4 RK |
1 | /* |
| 2 | * linux/include/asm-arm/pgtable-nommu.h | |
| 3 | * | |
| 4 | * Copyright (C) 1995-2002 Russell King | |
| 5 | * Copyright (C) 2004 Hyok S. Choi | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License version 2 as | |
| 9 | * published by the Free Software Foundation. | |
| 10 | */ | |
| 11 | #ifndef _ASMARM_PGTABLE_NOMMU_H | |
| 12 | #define _ASMARM_PGTABLE_NOMMU_H | |
| 13 | ||
| 14 | #ifndef __ASSEMBLY__ | |
| 15 | ||
| 002547b4 RK |
16 | #include <linux/slab.h> |
| 17 | #include <asm/processor.h> | |
| 18 | #include <asm/page.h> | |
| 19 | #include <asm/io.h> | |
| 20 | ||
| 21 | /* | |
| 22 | * Trivial page table functions. | |
| 23 | */ | |
| 24 | #define pgd_present(pgd) (1) | |
| 25 | #define pgd_none(pgd) (0) | |
| 26 | #define pgd_bad(pgd) (0) | |
| 27 | #define pgd_clear(pgdp) | |
| 28 | #define kern_addr_valid(addr) (1) | |
| 29 | #define pmd_offset(a, b) ((void *)0) | |
| 30 | /* FIXME */ | |
| 31 | /* | |
| 32 | * PMD_SHIFT determines the size of the area a second-level page table can map | |
| 33 | * PGDIR_SHIFT determines what a third-level page table entry can map | |
| 34 | */ | |
| 35 | #define PGDIR_SHIFT 21 | |
| 36 | ||
| 37 | #define PGDIR_SIZE (1UL << PGDIR_SHIFT) | |
| 38 | #define PGDIR_MASK (~(PGDIR_SIZE-1)) | |
| 39 | /* FIXME */ | |
| 40 | ||
| 41 | #define PAGE_NONE __pgprot(0) | |
| 42 | #define PAGE_SHARED __pgprot(0) | |
| 43 | #define PAGE_COPY __pgprot(0) | |
| 44 | #define PAGE_READONLY __pgprot(0) | |
| 45 | #define PAGE_KERNEL __pgprot(0) | |
| 46 | ||
| 002547b4 RK |
47 | #define swapper_pg_dir ((pgd_t *) 0) |
| 48 | ||
| 49 | #define __swp_type(x) (0) | |
| 50 | #define __swp_offset(x) (0) | |
| 51 | #define __swp_entry(typ,off) ((swp_entry_t) { ((typ) | ((off) << 7)) }) | |
| 52 | #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) | |
| 53 | #define __swp_entry_to_pte(x) ((pte_t) { (x).val }) | |
| 54 | ||
| 55 | ||
| 56 | typedef pte_t *pte_addr_t; | |
| 57 | ||
| 58 | static inline int pte_file(pte_t pte) { return 0; } | |
| 59 | ||
| 60 | /* | |
| 61 | * ZERO_PAGE is a global shared page that is always zero: used | |
| 62 | * for zero-mapped memory areas etc.. | |
| 63 | */ | |
| 64 | #define ZERO_PAGE(vaddr) (virt_to_page(0)) | |
| 65 | ||
| 66 | /* | |
| 67 | * Mark the prot value as uncacheable and unbufferable. | |
| 68 | */ | |
| 69 | #define pgprot_noncached(prot) __pgprot(0) | |
| 70 | #define pgprot_writecombine(prot) __pgprot(0) | |
| 71 | ||
| 72 | ||
| 73 | /* | |
| 74 | * These would be in other places but having them here reduces the diffs. | |
| 75 | */ | |
| 76 | extern unsigned int kobjsize(const void *objp); | |
| 77 | extern int is_in_rom(unsigned long); | |
| 78 | ||
| 79 | /* | |
| 80 | * No page table caches to initialise. | |
| 81 | */ | |
| 82 | #define pgtable_cache_init() do { } while (0) | |
| 83 | #define io_remap_page_range remap_page_range | |
| 84 | #define io_remap_pfn_range remap_pfn_range | |
| 85 | ||
| 86 | #define MK_IOSPACE_PFN(space, pfn) (pfn) | |
| 87 | #define GET_IOSPACE(pfn) 0 | |
| 88 | #define GET_PFN(pfn) (pfn) | |
| 89 | ||
| 90 | ||
| 91 | /* | |
| 92 | * All 32bit addresses are effectively valid for vmalloc... | |
| 93 | * Sort of meaningless for non-VM targets. | |
| 94 | */ | |
| 95 | #define VMALLOC_START 0 | |
| 96 | #define VMALLOC_END 0xffffffff | |
| 97 | ||
| 98 | #define FIRST_USER_ADDRESS (0) | |
| 99 | ||
| 100 | #else | |
| 101 | ||
| 102 | /* | |
| 103 | * dummy tlb and user structures. | |
| 104 | */ | |
| 105 | #define v3_tlb_fns (0) | |
| 106 | #define v4_tlb_fns (0) | |
| 107 | #define v4wb_tlb_fns (0) | |
| 108 | #define v4wbi_tlb_fns (0) | |
| 109 | #define v6_tlb_fns (0) | |
| 110 | ||
| 111 | #define v3_user_fns (0) | |
| 112 | #define v4_user_fns (0) | |
| 113 | #define v4_mc_user_fns (0) | |
| 114 | #define v4wb_user_fns (0) | |
| 115 | #define v4wt_user_fns (0) | |
| 116 | #define v6_user_fns (0) | |
| 117 | #define xscale_mc_user_fns (0) | |
| 118 | ||
| 119 | #endif /*__ASSEMBLY__*/ | |
| 120 | ||
| 121 | #endif /* _ASMARM_PGTABLE_H */ |