sys/arch/ews4800mips/stand/common/boot_device.c

   1 /*      $NetBSD: boot_device.c,v 1.1 2005/12/29 15:20:09 tsutsui Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2004 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by UCHIYAMA Yasushi.
   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/types.h>
  33 #include <machine/sbd.h>
  34 #include "common.h"
  35
  36 /*
  37  * Get boot device and unit number. IPL sets it.
  38  */
  39 void __nvsram_type_a(int *, int *);
  40 void __nvsram_type_b(int *, int *);
  41 void __nvsram_type_c(int *, int *);
  42 void __nvsram_type_d(int *, int *);
  43 void __nvsram_type_e(int *, int *);
  44
  45 void (*tab[])(int *, int *) = {
  46         __nvsram_type_c, /* ER */
  47         __nvsram_type_a, /* TR */
  48         __nvsram_type_a, /* SR */
  49         __nvsram_type_b, /* TR+2D */
  50         __nvsram_type_b, /* TR+3D */
  51         __nvsram_type_c, /* LR */
  52         __nvsram_type_c, /* ER2 */
  53         __nvsram_type_d, /* TR2 */
  54         __nvsram_type_c, /* ER1V */
  55         __nvsram_type_e, /* LRC */
  56         __nvsram_type_c, /* SR2 */
  57         __nvsram_type_d, /* ER+ */
  58         __nvsram_type_c, /* TR2+ */
  59         __nvsram_type_d, /* ER2A */
  60 };
  61
  62 void
  63 boot_device(int *type, int *unit, int *fd_format)
  64 {
  65         int i;
  66
  67         *fd_format = SBD_INFO->fdd == 1 ? FD_FORMAT_2HD : FD_FORMAT_2D;
  68         i  = SBD_INFO->machine - 0x1010;
  69         if (i < sizeof tab / sizeof tab[0])
  70                 return tab[i](type, unit);
  71
  72         return __nvsram_type_e(type, unit);
  73 }
  74
  75 void
  76 __nvsram_type_a(int *type, int *unit)
  77 {
  78         /* TR, SR */
  79         *type = NVSRAM_BOOTDEV_HARDDISK;
  80         *unit = 0;
  81 }
  82
  83 void
  84 __nvsram_type_b(int *type, int *unit)
  85 {
  86         /* TR+2D, TR+3D */
  87         *type = NVSRAM_BOOTDEV_HARDDISK;
  88         *unit = *(uint8_t *)0xba021808;
  89 }
  90
  91 void
  92 __nvsram_type_c(int *type, int *unit)
  93 {
  94         /* ER, LR, ER2, ER1V, SR2, TR2+ */
  95         *type = NVSRAM_BOOTDEV_HARDDISK;
  96         *unit = *(uint8_t *)0xbb012088;
  97 }
  98
  99 void
 100 __nvsram_type_d(int *type, int *unit)
 101 {
 102         /* TR2, ER+, ER2A */
 103         *type = *(uint8_t *)0xbb023030;
 104         *unit = *(uint8_t *)0xbb023034;
 105 }
 106
 107 void
 108 __nvsram_type_e(int *type, int *unit)
 109 {
 110         /* LRC, TR2A, LER, LER_L, LER_H, MUS, LT, LT_L ... */
 111         *type = *(uint8_t *)0xbe493030;
 112         *unit = *(uint8_t *)0xbe493034;
 113 }