sys/arch/powerpc/oea/prep_machdep.c

   1 /* $NetBSD: prep_machdep.c,v 1.5 2008/11/30 18:21:35 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2007 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Tim Rightnour
   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 /*
  33  * This is a set of general routines that most PReP-similar machines have
  34  * in common.  Machines that use these routines do not have to be fully
  35  * PReP compliant, the only requirement is that they use a PReP memory map.
  36  * IE, io at 0x80000000 and mem at 0xc0000000.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 __KERNEL_RCSID(0, "$NetBSD: prep_machdep.c,v 1.5 2008/11/30 18:21:35 martin Exp $");
  41
  42 #include "opt_modular.h"
  43
  44 #include <sys/param.h>
  45 #include <sys/extent.h>
  46 #include <sys/kernel.h>
  47 #include <sys/malloc.h>
  48 #include <sys/reboot.h>
  49 #include <sys/ksyms.h>
  50
  51 #include <uvm/uvm_extern.h>
  52 #include <machine/powerpc.h>
  53 #include <machine/bus.h>
  54 #include <machine/pmap.h>
  55 #include <powerpc/oea/bat.h>
  56
  57 #include "opt_ddb.h"
  58 #ifdef DDB
  59 #include <machine/db_machdep.h>
  60 #include <ddb/db_extern.h>
  61 #endif
  62
  63 #include "ksyms.h"
  64
  65 #if NKSYMS || defined(DDB) || defined(MODULAR)
  66 extern void *endsym, *startsym;
  67 #endif
  68 extern struct mem_region physmemr[2], availmemr[2];
  69
  70 struct powerpc_bus_space prep_io_space_tag = {
  71         .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_IO_TYPE,
  72         .pbs_offset = PREP_BUS_SPACE_IO,
  73         .pbs_base = 0x00000000,
  74         .pbs_limit = PREP_PHYS_SIZE_IO,
  75 };
  76
  77 struct powerpc_bus_space genppc_isa_io_space_tag = {
  78         .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_IO_TYPE,
  79         .pbs_offset = PREP_BUS_SPACE_IO,
  80         .pbs_base = 0x00000000,
  81         .pbs_limit = PREP_ISA_SIZE_IO,
  82 };
  83
  84 struct powerpc_bus_space prep_mem_space_tag = {
  85         .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE,
  86         .pbs_offset = PREP_BUS_SPACE_MEM,
  87         .pbs_base = 0x00000000,
  88         .pbs_limit = PREP_PHYS_SIZE_MEM,
  89 };
  90
  91 struct powerpc_bus_space genppc_isa_mem_space_tag = {
  92         .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE,
  93         .pbs_offset = PREP_BUS_SPACE_MEM,
  94         .pbs_base = 0x00000000,
  95         .pbs_limit = PREP_ISA_SIZE_MEM,
  96 };
  97
  98 static char ex_storage[2][EXTENT_FIXED_STORAGE_SIZE(8)]
  99         __attribute__((aligned(8)));
 100
 101 void
 102 prep_bus_space_init(void)
 103 {
 104         int error;
 105
 106         error = bus_space_init(&prep_io_space_tag, "ioport",
 107             ex_storage[0], sizeof(ex_storage[0]));
 108         if (error)
 109                 panic("prep_bus_space_init: can't init io tag");
 110
 111         error = extent_alloc_region(prep_io_space_tag.pbs_extent,
 112             PREP_PHYS_RESVD_START_IO, PREP_PHYS_RESVD_SIZE_IO, EX_NOWAIT);
 113         if (error)
 114                 panic("prep_bus_space_init: can't block out reserved I/O"
 115                     " space 0x10000-0x7fffff: error=%d", error);
 116
 117         error = bus_space_init(&prep_mem_space_tag, "iomem",
 118             ex_storage[1], sizeof(ex_storage[1]));
 119         if (error)
 120                 panic("prep_bus_space_init: can't init mem tag");
 121
 122         genppc_isa_io_space_tag.pbs_extent = prep_io_space_tag.pbs_extent;
 123         error = bus_space_init(&genppc_isa_io_space_tag, "isa-ioport", NULL, 0);        if (error)
 124                 panic("prep_bus_space_init: can't init isa io tag");
 125
 126         genppc_isa_mem_space_tag.pbs_extent = prep_mem_space_tag.pbs_extent;
 127         error = bus_space_init(&genppc_isa_mem_space_tag, "isa-iomem", NULL, 0);
 128         if (error)
 129                 panic("prep_bus_space_init: can't init isa mem tag");
 130 }
 131
 132 /*
 133  * just a few calls used in initppc() all in one place so everything gets
 134  * done the same across the ports
 135  */
 136
 137 void
 138 prep_initppc(u_long startkernel, u_long endkernel, u_int args)
 139 {
 140
 141         /*
 142          * Now setup fixed bat registers
 143          * We setup the memory BAT, the IO space BAT, and a special
 144          * BAT for certain machines that have rs6k style PCI bridges
 145          * (only on port-prep)
 146          */
 147         oea_batinit(
 148             PREP_BUS_SPACE_MEM, BAT_BL_256M,
 149             PREP_BUS_SPACE_IO,  BAT_BL_256M,
 150 #ifdef prep
 151             0xbf800000, BAT_BL_8M,
 152 #endif
 153             0);
 154
 155         /* Install vectors and interrupt handler. */
 156         oea_init(NULL);
 157
 158         /* Initialize bus_space. */
 159         prep_bus_space_init();
 160
 161         /* Initialize the console asap. */
 162         consinit();
 163
 164         /* Set the page size */
 165         uvm_setpagesize();
 166
 167         /* Initialize pmap module */
 168         pmap_bootstrap(startkernel, endkernel);
 169
 170 #if NKSYMS || defined(DDB) || defined(MODULAR)
 171         ksyms_addsyms_elf((int)((u_long)endsym - (u_long)startsym), startsym, endsym);
 172 #endif
 173
 174 #ifdef DDB
 175         boothowto = args;
 176         if (boothowto & RB_KDB)
 177                 Debugger();
 178 #endif
 179 }
 180
 181 void
 182 mem_regions(struct mem_region **mem, struct mem_region **avail)
 183 {
 184
 185         *mem = physmemr;
 186         *avail = availmemr;
 187 }