sys/arch/evbppc/pmppc/dev/flash.c

   1 /*      $NetBSD: flash.c,v 1.2 2007/10/17 19:54:19 garbled 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 1.2 2007/10/17 19:54:19 garbled Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/device.h>
  37 #include <sys/systm.h>
  38
  39 #include <machine/bus.h>
  40 #include <arch/evbppc/pmppc/dev/mainbus.h>
  41
  42 struct flash_softc {
  43         struct device 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(struct device *, struct cfdata *, void *);
  52 static void     flash_attach(struct device *, struct device *, void *);
  53
  54 CFATTACH_DECL(flash, sizeof(struct flash_softc),
  55     flash_match, flash_attach, NULL, NULL);
  56
  57 int
  58 flash_match(struct device *parent, struct cfdata *cf, void *aux)
  59 {
  60         struct mainbus_attach_args *maa = aux;
  61
  62         return (strcmp(maa->mb_name, "flash") == 0);
  63 }
  64
  65 void
  66 flash_attach(struct device *parent, struct device *self, void *aux)
  67 {
  68         struct mainbus_attach_args *maa = aux;
  69         struct flash_softc *sc = (struct flash_softc *)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         printf(": %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                 printf("%s: can't map i/o space\n", self->dv_xname);
  83                 return;
  84         }
  85 #endif
  86
  87         printf("%s: driver not implemented\n", self->dv_xname);
  88 }