summaryrefslogtreecommitdiff
path: root/arch/arm/mm/cache-nop.S
blob: cd191aa9031359abe49e97a294a0533cbe174413 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
/* SPDX-License-Identifier: GPL-2.0-only */
#include <linux/linkage.h>
#include <linux/init.h>
#include <linux/cfi_types.h>
#include <asm/assembler.h>

#include "proc-macros.S"

/*
 * These are all open-coded instead of aliased, to make clear
 * what is going on here: all functions are stubbed out.
 */
SYM_TYPED_FUNC_START(nop_flush_icache_all)
	ret	lr
SYM_FUNC_END(nop_flush_icache_all)

SYM_TYPED_FUNC_START(nop_flush_kern_cache_all)
	ret	lr
SYM_FUNC_END(nop_flush_kern_cache_all)

	.globl nop_flush_kern_cache_louis
	.equ nop_flush_kern_cache_louis, nop_flush_icache_all

SYM_TYPED_FUNC_START(nop_flush_user_cache_all)
	ret	lr
SYM_FUNC_END(nop_flush_user_cache_all)

SYM_TYPED_FUNC_START(nop_flush_user_cache_range)
	ret	lr
SYM_FUNC_END(nop_flush_user_cache_range)

SYM_TYPED_FUNC_START(nop_coherent_kern_range)
	ret	lr
SYM_FUNC_END(nop_coherent_kern_range)

SYM_TYPED_FUNC_START(nop_coherent_user_range)
	mov	r0, 0
	ret	lr
SYM_FUNC_END(nop_coherent_user_range)

SYM_TYPED_FUNC_START(nop_flush_kern_dcache_area)
	ret	lr
SYM_FUNC_END(nop_flush_kern_dcache_area)

SYM_TYPED_FUNC_START(nop_dma_flush_range)
	ret	lr
SYM_FUNC_END(nop_dma_flush_range)

SYM_TYPED_FUNC_START(nop_dma_map_area)
	ret	lr
SYM_FUNC_END(nop_dma_map_area)

	__INITDATA

	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
	define_cache_functions nop

SYM_TYPED_FUNC_START(nop_dma_unmap_area)
	ret	lr
SYM_FUNC_END(nop_dma_unmap_area)