1 /* $NetBSD: flash.c,v 1.5 2011/07/01 19:03:09 dyoung Exp $ */
2
3 /*
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Lennart Augustsson (lennart@augustsson.net) at Sandburst Corp.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: flash.c,v 1.5 2011/07/01 19:03:09 dyoung Exp $");
34
35 #include <sys/param.h>
36 #include <sys/device.h>
37 #include <sys/systm.h>
38
39 #include <sys/bus.h>
40 #include <arch/evbppc/pmppc/dev/mainbus.h>
41
42 struct flash_softc {
43 device_t sc_dev;
44 bus_space_tag_t sc_tag;
45 bus_space_handle_t sc_handle;
46 u_int32_t sc_addr;
47 u_int32_t sc_size;
48 u_int32_t sc_width;
49 };
50
51 static int flash_match(device_t, cfdata_t, void *);
52 static void flash_attach(device_t, device_t, void *);
53
54 CFATTACH_DECL_NEW(flash, sizeof(struct flash_softc),
55 flash_match, flash_attach, NULL, NULL);
56
57 int
flash_match(device_t parent,cfdata_t cf,void * aux)58 flash_match(device_t parent, cfdata_t cf, void *aux)
59 {
60 struct mainbus_attach_args *maa = aux;
61
62 return (strcmp(maa->mb_name, "flash") == 0);
63 }
64
65 void
flash_attach(device_t parent,device_t self,void * aux)66 flash_attach(device_t parent, device_t self, void *aux)
67 {
68 struct mainbus_attach_args *maa = aux;
69 struct flash_softc *sc = device_private(self);
70
71 sc->sc_tag = maa->mb_bt;
72 sc->sc_addr = maa->mb_addr;
73 sc->sc_size = maa->u.mb_flash.size / 8; /* bytes */
74 sc->sc_width = maa->u.mb_flash.width;
75
76 aprint_normal(": %d Mbyte, %d bits wide\n", sc->sc_size / (1024*1024),
77 sc->sc_width);
78 #if 0
79 /* The extend map doesn't cover this area. */
80 if (bus_space_map(sc->sc_tag, sc->sc_addr, sc->sc_size, 0,
81 &sc->sc_handle)) {
82 aprint_error_dev(self, "can't map i/o space\n");
83 return;
84 }
85 #endif
86
87 aprint_error_dev(self, "driver not implemented\n");
88 }
89