xref: /openbsd-src/sys/arch/arm/cortex/cortex.c (revision 130ea1eca9fa3e4fe9bd0c779b913a2bb61dee85)
1*130ea1ecSderaadt /*	$OpenBSD: cortex.c,v 1.8 2024/08/18 15:50:47 deraadt Exp $	*/
2027018efSpatrick /* $NetBSD: mainbus.c,v 1.3 2001/06/13 17:52:43 nathanw Exp $ */
3027018efSpatrick 
4027018efSpatrick /*
5027018efSpatrick  * Copyright (c) 1994,1995 Mark Brinicombe.
6027018efSpatrick  * Copyright (c) 1994 Brini.
7027018efSpatrick  * All rights reserved.
8027018efSpatrick  *
9027018efSpatrick  * Redistribution and use in source and binary forms, with or without
10027018efSpatrick  * modification, are permitted provided that the following conditions
11027018efSpatrick  * are met:
12027018efSpatrick  * 1. Redistributions of source code must retain the above copyright
13027018efSpatrick  *    notice, this list of conditions and the following disclaimer.
14027018efSpatrick  * 2. Redistributions in binary form must reproduce the above copyright
15027018efSpatrick  *    notice, this list of conditions and the following disclaimer in the
16027018efSpatrick  *    documentation and/or other materials provided with the distribution.
17027018efSpatrick  * 3. All advertising materials mentioning features or use of this software
18027018efSpatrick  *    must display the following acknowledgement:
19027018efSpatrick  *	This product includes software developed by Brini.
20027018efSpatrick  * 4. The name of the company nor the name of the author may be used to
21027018efSpatrick  *    endorse or promote products derived from this software without specific
22027018efSpatrick  *    prior written permission.
23027018efSpatrick  *
24027018efSpatrick  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
25027018efSpatrick  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26027018efSpatrick  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27027018efSpatrick  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
28027018efSpatrick  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29027018efSpatrick  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30027018efSpatrick  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31027018efSpatrick  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32027018efSpatrick  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33027018efSpatrick  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34027018efSpatrick  * SUCH DAMAGE.
35027018efSpatrick  *
36027018efSpatrick  * RiscBSD kernel project
37027018efSpatrick  *
38027018efSpatrick  * mainbus.c
39027018efSpatrick  *
40027018efSpatrick  * mainbus configuration
41027018efSpatrick  *
42027018efSpatrick  * Created      : 15/12/94
43027018efSpatrick  */
44027018efSpatrick 
45027018efSpatrick #include <sys/param.h>
46027018efSpatrick #include <sys/systm.h>
47027018efSpatrick #include <sys/kernel.h>
48027018efSpatrick #include <sys/device.h>
49027018efSpatrick #define _ARM32_BUS_DMA_PRIVATE
50027018efSpatrick #include <machine/bus.h>
51027018efSpatrick #include <arm/cpufunc.h>
52027018efSpatrick #include <arm/armv7/armv7var.h>
53027018efSpatrick #include <arm/cortex/cortex.h>
5472d97272Spatrick #include <arm/mainbus/mainbus.h>
55027018efSpatrick 
56027018efSpatrick struct arm32_bus_dma_tag cortex_bus_dma_tag = {
57027018efSpatrick 	NULL,
58027018efSpatrick 	_bus_dmamap_create,
59027018efSpatrick 	_bus_dmamap_destroy,
60027018efSpatrick 	_bus_dmamap_load,
61027018efSpatrick 	_bus_dmamap_load_mbuf,
62027018efSpatrick 	_bus_dmamap_load_uio,
63027018efSpatrick 	_bus_dmamap_load_raw,
6437084e1eSkettenis 	_bus_dmamap_load_buffer,
65027018efSpatrick 	_bus_dmamap_unload,
66027018efSpatrick 	_bus_dmamap_sync,
67027018efSpatrick 	_bus_dmamem_alloc,
68027018efSpatrick 	_bus_dmamem_free,
69027018efSpatrick 	_bus_dmamem_map,
70027018efSpatrick 	_bus_dmamem_unmap,
71027018efSpatrick 	_bus_dmamem_mmap,
72027018efSpatrick };
73027018efSpatrick 
74027018efSpatrick /* Prototypes for functions provided */
75027018efSpatrick 
76027018efSpatrick int  cortexmatch(struct device *, void *, void *);
77027018efSpatrick void cortexattach(struct device *, struct device *, void *);
78027018efSpatrick int  cortexprint(void *aux, const char *cortex);
79027018efSpatrick int cortexsearch(struct device *,  void *, void *);
80027018efSpatrick 
81027018efSpatrick /* attach and device structures for the device */
82027018efSpatrick 
83e3ee5e84Smpi const struct cfattach cortex_ca = {
84*130ea1ecSderaadt 	sizeof(struct device), cortexmatch, cortexattach
85027018efSpatrick };
86027018efSpatrick 
87027018efSpatrick struct cfdriver cortex_cd = {
88027018efSpatrick 	NULL, "cortex", DV_DULL
89027018efSpatrick };
90027018efSpatrick 
91027018efSpatrick /*
92027018efSpatrick  * int cortexmatch(struct device *parent, struct cfdata *cf, void *aux)
93027018efSpatrick  */
94027018efSpatrick 
95027018efSpatrick int
9672d97272Spatrick cortexmatch(struct device *parent, void *cfdata, void *aux)
97027018efSpatrick {
9879645871Spatrick 	union mainbus_attach_args *ma = aux;
9972d97272Spatrick 	struct cfdata *cf = (struct cfdata *)cfdata;
100027018efSpatrick 	int cputype = cpufunc_id();
101027018efSpatrick 
10272d97272Spatrick 	if (strcmp(cf->cf_driver->cd_name, ma->ma_name) != 0)
10372d97272Spatrick 		return (0);
10472d97272Spatrick 
1058ff1d18eSpatrick 	if ((cputype & CPU_ID_CORTEX_A7_MASK) == CPU_ID_CORTEX_A7 ||
1068ff1d18eSpatrick 	    (cputype & CPU_ID_CORTEX_A9_MASK) == CPU_ID_CORTEX_A9 ||
1074ccb6786Sjsg 	    (cputype & CPU_ID_CORTEX_A15_MASK) == CPU_ID_CORTEX_A15 ||
1084ccb6786Sjsg 	    (cputype & CPU_ID_CORTEX_A17_MASK) == CPU_ID_CORTEX_A17) {
109027018efSpatrick 		if (armv7_periphbase())
110027018efSpatrick 			return (1);
111027018efSpatrick 	}
112027018efSpatrick 
113027018efSpatrick 	return (0);
114027018efSpatrick }
115027018efSpatrick 
116027018efSpatrick /*
117027018efSpatrick  * void cortexattach(struct device *parent, struct device *self, void *aux)
118027018efSpatrick  *
119027018efSpatrick  * probe and attach all children
120027018efSpatrick  */
121027018efSpatrick 
122027018efSpatrick void
123027018efSpatrick cortexattach(struct device *parent, struct device *self, void *aux)
124027018efSpatrick {
125027018efSpatrick 	printf("\n");
126027018efSpatrick 
127027018efSpatrick 	config_search(cortexsearch, self, aux);
128027018efSpatrick }
129027018efSpatrick 
130027018efSpatrick int
131027018efSpatrick cortexsearch(struct device *parent, void *vcf, void *aux)
132027018efSpatrick {
133027018efSpatrick 	struct cortex_attach_args ca;
134027018efSpatrick 	struct cfdata *cf = vcf;
135027018efSpatrick 
136027018efSpatrick 	ca.ca_name = cf->cf_driver->cd_name;
137027018efSpatrick 	ca.ca_iot = &armv7_bs_tag;
138027018efSpatrick 	ca.ca_dmat = &cortex_bus_dma_tag;
139027018efSpatrick 	ca.ca_periphbase = armv7_periphbase();
140027018efSpatrick 
141027018efSpatrick 	/* allow for devices to be disabled in UKC */
142027018efSpatrick 	if ((*cf->cf_attach->ca_match)(parent, cf, &ca) == 0)
143027018efSpatrick 		return 0;
144027018efSpatrick 
145027018efSpatrick 	config_attach(parent, cf, &ca, cortexprint);
146027018efSpatrick 	return 1;
147027018efSpatrick }
148027018efSpatrick 
149027018efSpatrick /*
150027018efSpatrick  * int cortexprint(void *aux, const char *cortex)
151027018efSpatrick  *
152027018efSpatrick  * print routine used during config of children
153027018efSpatrick  */
154027018efSpatrick 
155027018efSpatrick int
156027018efSpatrick cortexprint(void *aux, const char *cortex)
157027018efSpatrick {
158027018efSpatrick 	struct cortex_attach_args *ca = aux;
159027018efSpatrick 
160027018efSpatrick 	if (cortex != NULL)
161027018efSpatrick 		printf("%s at %s", ca->ca_name, cortex);
162027018efSpatrick 
163027018efSpatrick 	return (UNCONF);
164027018efSpatrick }
165