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1 /*      $NetBSD: cpuconf.h,v 1.8 2003/09/06 08:55:42 rearnsha Exp $     */
2
3 /*
4  * Copyright (c) 2002 Wasabi Systems, Inc.
5  * All rights reserved.
6  *
7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. All advertising materials mentioning features or use of this software
18  *    must display the following acknowledgement:
19  *      This product includes software developed for the NetBSD Project by
20  *      Wasabi Systems, Inc.
21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22  *    or promote products derived from this software without specific prior
23  *    written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35  * POSSIBILITY OF SUCH DAMAGE.
36  *
37  * $FreeBSD$
38  *
39  */
40
41 #ifndef _MACHINE_CPUCONF_H_
42 #define _MACHINE_CPUCONF_H_
43
44 /*
45  * IF YOU CHANGE THIS FILE, MAKE SURE TO UPDATE THE DEFINITION OF
46  * "PMAP_NEEDS_PTE_SYNC" IN <arm/arm32/pmap.h> FOR THE CPU TYPE
47  * YOU ARE ADDING SUPPORT FOR.
48  */
49
50 /*
51  * Step 1: Count the number of CPU types configured into the kernel.
52  */
53 #if defined(_KERNEL_OPT)
54 #define CPU_NTYPES      (defined(CPU_ARM2) + defined(CPU_ARM250) +      \
55                          defined(CPU_ARM3) +                            \
56                          defined(CPU_ARM6) + defined(CPU_ARM7) +        \
57                          defined(CPU_ARM7TDMI) +                        \
58                          defined(CPU_ARM8) + defined(CPU_ARM9) +        \
59                          defined(CPU_ARM10) +                           \
60                          defined(CPU_SA110) + defined(CPU_SA1100) +     \
61                          defined(CPU_SA1110) +                          \
62                          defined(CPU_IXP12X0) +                         \
63                          defined(CPU_XSCALE_80200) +                    \
64                          defined(CPU_XSCALE_80321) +                    \
65                          defined(CPU_XSCALE_PXA2X0) +                   \
66                          defined(CPU_XSCALE_IXP425))
67 #else
68 #define CPU_NTYPES      2
69 #endif /* _KERNEL_OPT */
70
71 /*
72  * Step 2: Determine which ARM architecture versions are configured.
73  */
74 #if !defined(_KERNEL_OPT) ||                                            \
75     (defined(CPU_ARM2) || defined(CPU_ARM250) || defined(CPU_ARM3))
76 #define ARM_ARCH_2      1
77 #else
78 #define ARM_ARCH_2      0
79 #endif
80
81 #if !defined(_KERNEL_OPT) ||                                            \
82     (defined(CPU_ARM6) || defined(CPU_ARM7))
83 #define ARM_ARCH_3      1
84 #else
85 #define ARM_ARCH_3      0
86 #endif
87
88 #if !defined(_KERNEL_OPT) ||                                            \
89     (defined(CPU_ARM7TDMI) || defined(CPU_ARM8) || defined(CPU_ARM9) || \
90      defined(CPU_ARM10) || defined(CPU_SA110) || defined(CPU_SA1100) || \
91      defined(CPU_SA1110) || defined(CPU_IXP12X0) || defined(CPU_XSCALE_IXP425))
92 #define ARM_ARCH_4      1
93 #else
94 #define ARM_ARCH_4      0
95 #endif
96
97 #if !defined(_KERNEL_OPT) ||                                            \
98     (defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) ||          \
99      defined(CPU_XSCALE_PXA2X0))
100 #define ARM_ARCH_5      1
101 #else
102 #define ARM_ARCH_5      0
103 #endif
104
105 #define ARM_NARCH       (ARM_ARCH_2 + ARM_ARCH_3 + ARM_ARCH_4 + ARM_ARCH_5)
106 #if ARM_NARCH == 0
107 #error ARM_NARCH is 0
108 #endif
109
110 /*
111  * Step 3: Define which MMU classes are configured:
112  *
113  *      ARM_MMU_MEMC            Prehistoric, external memory controller
114  *                              and MMU for ARMv2 CPUs.
115  *
116  *      ARM_MMU_GENERIC         Generic ARM MMU, compatible with ARM6.
117  *
118  *      ARM_MMU_SA1             StrongARM SA-1 MMU.  Compatible with generic
119  *                              ARM MMU, but has no write-through cache mode.
120  *
121  *      ARM_MMU_XSCALE          XScale MMU.  Compatible with generic ARM
122  *                              MMU, but also has several extensions which
123  *                              require different PTE layout to use.
124  */
125 #if (defined(CPU_ARM2) || defined(CPU_ARM250) || defined(CPU_ARM3))
126 #define ARM_MMU_MEMC            1
127 #else
128 #define ARM_MMU_MEMC            0
129 #endif
130
131 #if (defined(CPU_ARM6) || defined(CPU_ARM7) || defined(CPU_ARM7TDMI) || \
132      defined(CPU_ARM8) || defined(CPU_ARM9) || defined(CPU_ARM10))
133 #define ARM_MMU_GENERIC         1
134 #else
135 #define ARM_MMU_GENERIC         0
136 #endif
137
138 #if (defined(CPU_SA110) || defined(CPU_SA1100) || defined(CPU_SA1110) ||\
139      defined(CPU_IXP12X0))
140 #define ARM_MMU_SA1             1
141 #else
142 #define ARM_MMU_SA1             0
143 #endif
144
145 #if(defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) ||           \
146      defined(CPU_XSCALE_PXA2X0) || defined(CPU_XSCALE_IXP425))
147 #define ARM_MMU_XSCALE          1
148 #else
149 #define ARM_MMU_XSCALE          0
150 #endif
151
152 #define ARM_NMMUS               (ARM_MMU_MEMC + ARM_MMU_GENERIC +       \
153                                  ARM_MMU_SA1 + ARM_MMU_XSCALE)
154 #if ARM_NMMUS == 0
155 #error ARM_NMMUS is 0
156 #endif
157
158 /*
159  * Step 4: Define features that may be present on a subset of CPUs
160  *
161  *      ARM_XSCALE_PMU          Performance Monitoring Unit on 80200 and 80321
162  */
163
164 #if !defined(_KERNEL_OPT) ||                                            \
165     (defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321))
166 #define ARM_XSCALE_PMU  1
167 #else
168 #define ARM_XSCALE_PMU  0
169 #endif
170
171 #endif /* _MACHINE_CPUCONF_H_ */