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authorRussell King <rmk+kernel@arm.linux.org.uk>2009-09-24 16:22:33 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-09-24 16:22:33 -0400
commitbaea7b946f00a291b166ccae7fcfed6c01530cc6 (patch)
tree4aa275fbdbec9c7b9b4629e8bee2bbecd3c6a6af /arch/sh/mm/nommu.c
parentae19ffbadc1b2100285a5b5b3d0a4e0a11390904 (diff)
parent94e0fb086fc5663c38bbc0fe86d698be8314f82f (diff)
Merge branch 'origin' into for-linus
Conflicts: MAINTAINERS
Diffstat (limited to 'arch/sh/mm/nommu.c')
-rw-r--r--arch/sh/mm/nommu.c96
1 files changed, 96 insertions, 0 deletions
diff --git a/arch/sh/mm/nommu.c b/arch/sh/mm/nommu.c
new file mode 100644
index 000000000000..ac16c05917ef
--- /dev/null
+++ b/arch/sh/mm/nommu.c
@@ -0,0 +1,96 @@
1/*
2 * arch/sh/mm/nommu.c
3 *
4 * Various helper routines and stubs for MMUless SH.
5 *
6 * Copyright (C) 2002 - 2009 Paul Mundt
7 *
8 * Released under the terms of the GNU GPL v2.0.
9 */
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/string.h>
13#include <linux/mm.h>
14#include <asm/pgtable.h>
15#include <asm/tlbflush.h>
16#include <asm/page.h>
17#include <asm/uaccess.h>
18
19/*
20 * Nothing too terribly exciting here ..
21 */
22void copy_page(void *to, void *from)
23{
24 memcpy(to, from, PAGE_SIZE);
25}
26
27__kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n)
28{
29 memcpy(to, from, n);
30 return 0;
31}
32
33__kernel_size_t __clear_user(void *to, __kernel_size_t n)
34{
35 memset(to, 0, n);
36 return 0;
37}
38
39void local_flush_tlb_all(void)
40{
41 BUG();
42}
43
44void local_flush_tlb_mm(struct mm_struct *mm)
45{
46 BUG();
47}
48
49void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
50 unsigned long end)
51{
52 BUG();
53}
54
55void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
56{
57 BUG();
58}
59
60void local_flush_tlb_one(unsigned long asid, unsigned long page)
61{
62 BUG();
63}
64
65void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
66{
67 BUG();
68}
69
70void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
71{
72}
73
74void __init kmap_coherent_init(void)
75{
76}
77
78void *kmap_coherent(struct page *page, unsigned long addr)
79{
80 BUG();
81 return NULL;
82}
83
84void kunmap_coherent(void *kvaddr)
85{
86 BUG();
87}
88
89void __init page_table_range_init(unsigned long start, unsigned long end,
90 pgd_t *pgd_base)
91{
92}
93
94void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t prot)
95{
96}