xref: /netbsd-src/sys/arch/arm/include/cpuconf.h (revision 29299275740e6d437cae3be0478fef97b85b4cd2)
1 /*	$NetBSD: cpuconf.h,v 1.28 2020/09/29 19:58:50 jmcneill 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 
38 #ifndef _ARM_CPUCONF_H_
39 #define	_ARM_CPUCONF_H_
40 
41 #if defined(_KERNEL_OPT)
42 #include "opt_cputypes.h"
43 #include "opt_cpuoptions.h"
44 #endif /* _KERNEL_OPT */
45 
46 #if defined(CPU_XSCALE_PXA250) || defined(CPU_XSCALE_PXA270)
47 #define	__CPU_XSCALE_PXA2XX
48 #endif
49 
50 #ifdef CPU_XSCALE_PXA2X0
51 #warning option CPU_XSCALE_PXA2X0 is obsolete. Use CPU_XSCALE_PXA250 and/or CPU_XSCALE_PXA270.
52 #endif
53 
54 /*
55  * IF YOU CHANGE THIS FILE, MAKE SURE TO UPDATE THE DEFINITION OF
56  * "PMAP_NEEDS_PTE_SYNC" IN <arm/arm32/pmap.h> FOR THE CPU TYPE
57  * YOU ARE ADDING SUPPORT FOR.
58  */
59 
60 #if 0
61 /*
62  * Step 1: Count the number of CPU types configured into the kernel.
63  */
64 #if defined(_KERNEL_OPT)
65 #define	CPU_NTYPES	(defined(CPU_ARM6) + defined(CPU_ARM7) +	\
66 			 defined(CPU_ARM7TDMI) +			\
67 			 defined(CPU_ARM8) + defined(CPU_ARM9) +	\
68 			 defined(CPU_ARM9E) +				\
69 			 defined(CPU_ARM10) +				\
70 			 defined(CPU_ARM11) +				\
71 			 defined(CPU_ARM1136) +				\
72 			 defined(CPU_ARM1176) +				\
73 			 defined(CPU_ARM11MPCORE) +			\
74 			 defined(CPU_CORTEX) +				\
75 			 defined(CPU_SA110) + defined(CPU_SA1100) +	\
76 			 defined(CPU_SA1110) +				\
77 			 defined(CPU_FA526) +				\
78 			 defined(CPU_IXP12X0) +				\
79 			 defined(CPU_XSCALE) +				\
80 			 defined(CPU_SHEEVA))
81 #else
82 #define	CPU_NTYPES	2
83 #endif /* _KERNEL_OPT */
84 #endif
85 
86 /*
87  * Step 2: Determine which ARM architecture versions are configured.
88  */
89 #if !defined(_KERNEL_OPT)
90 #define	ARM_ARCH_2	1
91 #else
92 #define	ARM_ARCH_2	0
93 #endif
94 
95 #if !defined(_KERNEL_OPT) ||						\
96     (defined(CPU_ARM6) || defined(CPU_ARM7))
97 #define	ARM_ARCH_3	1
98 #else
99 #define	ARM_ARCH_3	0
100 #endif
101 
102 #if !defined(_KERNEL_OPT) ||						\
103     (defined(CPU_ARM7TDMI) || defined(CPU_ARM8) || defined(CPU_ARM9) ||	\
104      defined(CPU_SA110) || defined(CPU_SA1100) || defined(CPU_FA526) || \
105      defined(CPU_SA1110) || defined(CPU_IXP12X0))
106 #define	ARM_ARCH_4	1
107 #else
108 #define	ARM_ARCH_4	0
109 #endif
110 
111 #if !defined(_KERNEL_OPT) ||						\
112     (defined(CPU_ARM9E) || defined(CPU_ARM10) ||			\
113      defined(CPU_XSCALE) || defined(CPU_SHEEVA))
114 #define	ARM_ARCH_5	1
115 #else
116 #define	ARM_ARCH_5	0
117 #endif
118 
119 #if defined(CPU_ARM11) || defined(CPU_ARM11MPCORE)
120 #define ARM_ARCH_6	1
121 #else
122 #define ARM_ARCH_6	0
123 #endif
124 
125 #if defined(CPU_CORTEX) || defined(CPU_PJ4B)
126 #define ARM_ARCH_7	1
127 #else
128 #define ARM_ARCH_7	0
129 #endif
130 
131 #define	ARM_NARCH	(ARM_ARCH_2 + ARM_ARCH_3 + ARM_ARCH_4 + \
132 			 ARM_ARCH_5 + ARM_ARCH_6 + ARM_ARCH_7)
133 #if ARM_NARCH == 0
134 #error ARM_NARCH is 0
135 #endif
136 
137 #if ARM_ARCH_5 || ARM_ARCH_6 || ARM_ARCH_7
138 /*
139  * We could support Thumb code on v4T, but the lack of clean interworking
140  * makes that hard.
141  */
142 #define THUMB_CODE
143 #endif
144 
145 /*
146  * Step 3: Define which MMU classes are configured:
147  *
148  *	ARM_MMU_MEMC		Prehistoric, external memory controller
149  *				and MMU for ARMv2 CPUs.
150  *
151  *	ARM_MMU_GENERIC		Generic ARM MMU, compatible with ARM6.
152  *
153  *	ARM_MMU_SA1		StrongARM SA-1 MMU.  Compatible with generic
154  *				ARM MMU, but has no write-through cache mode.
155  *
156  *	ARM_MMU_XSCALE		XScale MMU.  Compatible with generic ARM
157  *				MMU, but also has several extensions which
158  *				require different PTE layout to use.
159  *
160  *	ARM_MMU_V6C		ARM v6 MMU in backward compatible mode.
161  *                              Compatible with generic ARM MMU, but
162  *                              also has several extensions which
163  *				require different PTE layouts to use.
164  *                              XP bit in CP15 control reg is cleared.
165  *
166  *	ARM_MMU_V6N		ARM v6 MMU with XP bit of CP15 control reg
167  *                              set.  New features such as shared-bit
168  *                              and excute-never bit are available.
169  *                              Multiprocessor support needs this mode.
170  *
171  *	ARM_MMU_V7		ARM v7 MMU.
172  */
173 #if !defined(_KERNEL_OPT)
174 #define	ARM_MMU_MEMC		1
175 #else
176 #define	ARM_MMU_MEMC		0
177 #endif
178 
179 #if !defined(_KERNEL_OPT) ||						\
180     (defined(CPU_ARM6) || defined(CPU_ARM7) || defined(CPU_ARM7TDMI) ||	\
181      defined(CPU_ARM8) || defined(CPU_ARM9) || defined(CPU_ARM9E) ||	\
182      defined(CPU_ARM10) || defined(CPU_FA526)) || defined(CPU_SHEEVA)
183 #define	ARM_MMU_GENERIC		1
184 #else
185 #define	ARM_MMU_GENERIC		0
186 #endif
187 
188 #if !defined(_KERNEL_OPT) ||						\
189     (defined(CPU_SA110) || defined(CPU_SA1100) || defined(CPU_SA1110) ||\
190      defined(CPU_IXP12X0))
191 #define	ARM_MMU_SA1		1
192 #else
193 #define	ARM_MMU_SA1		0
194 #endif
195 
196 #if !defined(_KERNEL_OPT) ||						\
197     defined(CPU_XSCALE)
198 #define	ARM_MMU_XSCALE		1
199 #else
200 #define	ARM_MMU_XSCALE		0
201 #endif
202 
203 #if !defined(_KERNEL_OPT) ||						\
204 	(defined(CPU_ARM11) && defined(ARM11_COMPAT_MMU))
205 #define	ARM_MMU_V6C		1
206 #else
207 #define	ARM_MMU_V6C		0
208 #endif
209 
210 #if !defined(_KERNEL_OPT) ||						\
211 	(defined(CPU_ARM11) && !defined(ARM11_COMPAT_MMU))
212 #define	ARM_MMU_V6N		1
213 #else
214 #define	ARM_MMU_V6N		0
215 #endif
216 
217 #define	ARM_MMU_V6	(ARM_MMU_V6C + ARM_MMU_V6N)
218 
219 #if !defined(_KERNEL_OPT) ||						\
220 	 defined(CPU_ARMV7)
221 #define	ARM_MMU_V7		1
222 #else
223 #define	ARM_MMU_V7		0
224 #endif
225 
226 #if !defined(_KERNEL_OPT) ||						\
227 	 defined(CPU_ARMV8)
228 #define	ARM_MMU_V8		1
229 #else
230 #define	ARM_MMU_V8		0
231 #endif
232 
233 /*
234  * Can we use the ASID support in armv6+ MMUs?
235  */
236 #if !defined(_LOCORE)
237 #define	ARM_MMU_EXTENDED						\
238     ((ARM_MMU_MEMC + ARM_MMU_GENERIC + ARM_MMU_SA1 + ARM_MMU_XSCALE +	\
239      ARM_MMU_V6C) == 0 &&						\
240     (ARM_MMU_V6N + ARM_MMU_V7 + ARM_MMU_V8) > 0)
241 #if ARM_MMU_EXTENDED == 0
242 #undef ARM_MMU_EXTENDED
243 #endif
244 #endif
245 
246 #define	ARM_NMMUS							\
247     (ARM_MMU_MEMC + ARM_MMU_GENERIC + ARM_MMU_SA1 + ARM_MMU_XSCALE +	\
248      ARM_MMU_V6N + ARM_MMU_V6C + ARM_MMU_V7 + ARM_MMU_V8)
249 #if ARM_NMMUS == 0
250 #error ARM_NMMUS is 0
251 #endif
252 
253 /*
254  * Step 4: Define features that may be present on a subset of CPUs
255  *
256  *	ARM_XSCALE_PMU		Performance Monitoring Unit on 80200 and 80321
257  */
258 
259 #if !defined(_KERNEL_OPT) ||						\
260     (defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321))
261 #define ARM_XSCALE_PMU	1
262 #else
263 #define ARM_XSCALE_PMU	0
264 #endif
265 
266 #endif /* _ARM_CPUCONF_H_ */
267