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gerrit-public.fairphone.software / kernel / msm / 76aa698f331475147825ae135eae98bfd457825b / . / include / asm-m68knommu / mcfcache.h
blob: 45d1ac57ea829f7ec4cc66d28cfcc755c0616462 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/****************************************************************************/
2
3/*
4 * mcfcache.h -- ColdFire CPU cache support code
5 *
6 * (C) Copyright 2004, Greg Ungerer <gerg@snapgear.com>
7 */
8
9/****************************************************************************/
10#ifndef __M68KNOMMU_MCFCACHE_H
11#define __M68KNOMMU_MCFCACHE_H
12/****************************************************************************/
13
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]14
15/*
16 * The different ColdFire families have different cache arrangments.
17 * Everything from a small instruction only cache, to configurable
18 * data and/or instruction cache, to unified instruction/data, to
19 * harvard style separate instruction and data caches.
20 */
21
22#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || defined(CONFIG_M5272)
23/*
24 * Simple version 2 core cache. These have instruction cache only,
25 * we just need to invalidate it and enable it.
26 */
27.macro CACHE_ENABLE
28 movel #0x01000000,%d0 /* invalidate cache cmd */
29 movec %d0,%CACR /* do invalidate cache */
30 movel #0x80000100,%d0 /* setup cache mask */
31 movec %d0,%CACR /* enable cache */
32.endm
33#endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */
34
Greg Ungerer8a6e43e2005-09-12 11:18:10 +1000[diff] [blame]35#if defined(CONFIG_M523x) || defined(CONFIG_M527x)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]36/*
37 * New version 2 cores have a configurable split cache arrangement.
38 * For now I am just enabling instruction cache - but ultimately I
39 * think a split instruction/data cache would be better.
40 */
41.macro CACHE_ENABLE
42 movel #0x01400000,%d0
43 movec %d0,%CACR /* invalidate cache */
44 nop
45 movel #0x0000c000,%d0 /* set SDRAM cached only */
46 movec %d0,%ACR0
47 movel #0x00000000,%d0 /* no other regions cached */
48 movec %d0,%ACR1
49 movel #0x80400100,%d0 /* configure cache */
50 movec %d0,%CACR /* enable cache */
51 nop
52.endm
Greg Ungerer8a6e43e2005-09-12 11:18:10 +1000[diff] [blame]53#endif /* CONFIG_M523x || CONFIG_M527x */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]54
55#if defined(CONFIG_M528x)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]56.macro CACHE_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]57 nop
Greg Ungerer8a6e43e2005-09-12 11:18:10 +1000[diff] [blame]58 movel #0x01000000, %d0
59 movec %d0, %CACR /* Invalidate cache */
60 nop
61 movel #0x0000c020, %d0 /* Set SDRAM cached only */
62 movec %d0, %ACR0
63 movel #0xff00c000, %d0 /* Cache Flash also */
64 movec %d0, %ACR1
65 movel #0x80000200, %d0 /* Setup cache mask */
66 movec %d0, %CACR /* Enable cache */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]67 nop
68.endm
69#endif /* CONFIG_M528x */
70
71#if defined(CONFIG_M5249) || defined(CONFIG_M5307)
72/*
73 * The version 3 core cache. Oddly enough the version 2 core 5249
74 * has the same SDRAM and cache setup as the version 3 cores.
75 * This is a single unified instruction/data cache.
76 */
77.macro CACHE_ENABLE
78 movel #0x01000000,%d0 /* invalidate whole cache */
79 movec %d0,%CACR
80 nop
81#if defined(DEBUGGER_COMPATIBLE_CACHE) || defined(CONFIG_SECUREEDGEMP3)
82 movel #0x0000c000,%d0 /* set SDRAM cached (write-thru) */
83#else
84 movel #0x0000c020,%d0 /* set SDRAM cached (copyback) */
85#endif
86 movec %d0,%ACR0
87 movel #0x00000000,%d0 /* no other regions cached */
88 movec %d0,%ACR1
89 movel #0xa0000200,%d0 /* enable cache */
90 movec %d0,%CACR
91 nop
92.endm
93#endif /* CONFIG_M5249 || CONFIG_M5307 */
94
95#if defined(CONFIG_M5407)
96/*
97 * Version 4 cores have a true harvard style separate instruction
98 * and data cache. Invalidate and enable cache, also enable write
99 * buffers and branch accelerator.
100 */
101.macro CACHE_ENABLE
102 movel #0x01040100,%d0 /* invalidate whole cache */
103 movec %d0,%CACR
104 nop
105 movel #0x000fc000,%d0 /* set SDRAM cached only */
106 movec %d0, %ACR0
107 movel #0x00000000,%d0 /* no other regions cached */
108 movec %d0, %ACR1
109 movel #0x000fc000,%d0 /* set SDRAM cached only */
110 movec %d0, %ACR2
111 movel #0x00000000,%d0 /* no other regions cached */
112 movec %d0, %ACR3
113 movel #0xb6088400,%d0 /* enable caches */
114 movec %d0,%CACR
115 nop
116.endm
117#endif /* CONFIG_M5407 */
118
Greg Ungerer4f4ef292005-11-02 15:03:09 +1000[diff] [blame]119#if defined(CONFIG_M520x)
120.macro CACHE_ENABLE
121 move.l #0x01000000,%d0 /* invalidate whole cache */
122 movec %d0,%CACR
123 nop
124 move.l #0x0000c000,%d0 /* set SDRAM cached (write-thru) */
125 movec %d0,%ACR0
126 move.l #0x00000000,%d0 /* no other regions cached */
127 movec %d0,%ACR1
128 move.l #0x80400000,%d0 /* enable 8K instruction cache */
129 movec %d0,%CACR
130 nop
131.endm
132#endif /* CONFIG_M520x */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]133
134/****************************************************************************/
135#endif /* __M68KNOMMU_MCFCACHE_H */