1 /* $NetBSD: sunxi_de2.c,v 1.2 2021/01/27 03:10:20 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2019 Jared McNeill <jmcneill@invisible.ca>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: sunxi_de2.c,v 1.2 2021/01/27 03:10:20 thorpej Exp $");
31
32 #include <sys/param.h>
33 #include <sys/bus.h>
34 #include <sys/cpu.h>
35 #include <sys/device.h>
36 #include <sys/kmem.h>
37
38 #include <dev/fdt/fdtvar.h>
39
40 #include <arm/sunxi/sunxi_sramc.h>
41
42 static const struct device_compatible_entry compat_data[] = {
43 { .compat = "allwinner,sun50i-a64-de2" },
44 DEVICE_COMPAT_EOL
45 };
46
47 static int
sunxi_de2_match(device_t parent,cfdata_t cf,void * aux)48 sunxi_de2_match(device_t parent, cfdata_t cf, void *aux)
49 {
50 struct fdt_attach_args * const faa = aux;
51
52 return of_compatible_match(faa->faa_phandle, compat_data);
53 }
54
55 static void
sunxi_de2_attach(device_t parent,device_t self,void * aux)56 sunxi_de2_attach(device_t parent, device_t self, void *aux)
57 {
58 struct fdt_attach_args * const faa = aux;
59 const int phandle = faa->faa_phandle;
60
61 if (sunxi_sramc_claim(phandle) != 0) {
62 aprint_error(": cannot map SRAM to DE2\n");
63 return;
64 }
65
66 aprint_naive("\n");
67 aprint_normal(": DE2 Bus\n");
68
69 fdt_add_bus(self, phandle, faa);
70 }
71
72 CFATTACH_DECL_NEW(sunxi_de2bus, 0, sunxi_de2_match, sunxi_de2_attach, NULL, NULL);
73