1 /* $NetBSD: prep_machdep.c,v 1.3 2008/04/28 20:23:32 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 1.3 2008/04/28 20:23:32 martin Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/extent.h> 44 #include <sys/kernel.h> 45 #include <sys/malloc.h> 46 #include <sys/reboot.h> 47 #include <sys/ksyms.h> 48 49 #include <uvm/uvm_extern.h> 50 #include <machine/powerpc.h> 51 #include <machine/bus.h> 52 #include <machine/pmap.h> 53 #include <powerpc/oea/bat.h> 54 55 #include "opt_ddb.h" 56 #ifdef DDB 57 #include <machine/db_machdep.h> 58 #include <ddb/db_extern.h> 59 #endif 60 61 #include "ksyms.h" 62 63 #if NKSYMS || defined(DDB) || defined(LKM) 64 extern void *endsym, *startsym; 65 #endif 66 extern struct mem_region physmemr[2], availmemr[2]; 67 68 struct powerpc_bus_space prep_io_space_tag = { 69 .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_IO_TYPE, 70 .pbs_offset = PREP_BUS_SPACE_IO, 71 .pbs_base = 0x00000000, 72 .pbs_limit = PREP_PHYS_SIZE_IO, 73 }; 74 75 struct powerpc_bus_space genppc_isa_io_space_tag = { 76 .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_IO_TYPE, 77 .pbs_offset = PREP_BUS_SPACE_IO, 78 .pbs_base = 0x00000000, 79 .pbs_limit = PREP_ISA_SIZE_IO, 80 }; 81 82 struct powerpc_bus_space prep_mem_space_tag = { 83 .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 84 .pbs_offset = PREP_BUS_SPACE_MEM, 85 .pbs_base = 0x00000000, 86 .pbs_limit = PREP_PHYS_SIZE_MEM, 87 }; 88 89 struct powerpc_bus_space genppc_isa_mem_space_tag = { 90 .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 91 .pbs_offset = PREP_BUS_SPACE_MEM, 92 .pbs_base = 0x00000000, 93 .pbs_limit = PREP_ISA_SIZE_MEM, 94 }; 95 96 static char ex_storage[2][EXTENT_FIXED_STORAGE_SIZE(8)] 97 __attribute__((aligned(8))); 98 99 void 100 prep_bus_space_init(void) 101 { 102 int error; 103 104 error = bus_space_init(&prep_io_space_tag, "ioport", 105 ex_storage[0], sizeof(ex_storage[0])); 106 if (error) 107 panic("prep_bus_space_init: can't init io tag"); 108 109 error = extent_alloc_region(prep_io_space_tag.pbs_extent, 110 PREP_PHYS_RESVD_START_IO, PREP_PHYS_RESVD_SIZE_IO, EX_NOWAIT); 111 if (error) 112 panic("prep_bus_space_init: can't block out reserved I/O" 113 " space 0x10000-0x7fffff: error=%d", error); 114 115 error = bus_space_init(&prep_mem_space_tag, "iomem", 116 ex_storage[1], sizeof(ex_storage[1])); 117 if (error) 118 panic("prep_bus_space_init: can't init mem tag"); 119 120 genppc_isa_io_space_tag.pbs_extent = prep_io_space_tag.pbs_extent; 121 error = bus_space_init(&genppc_isa_io_space_tag, "isa-ioport", NULL, 0); if (error) 122 panic("prep_bus_space_init: can't init isa io tag"); 123 124 genppc_isa_mem_space_tag.pbs_extent = prep_mem_space_tag.pbs_extent; 125 error = bus_space_init(&genppc_isa_mem_space_tag, "isa-iomem", NULL, 0); 126 if (error) 127 panic("prep_bus_space_init: can't init isa mem tag"); 128 } 129 130 /* 131 * just a few calls used in initppc() all in one place so everything gets 132 * done the same across the ports 133 */ 134 135 void 136 prep_initppc(u_long startkernel, u_long endkernel, u_int args) 137 { 138 139 /* 140 * Now setup fixed bat registers 141 * We setup the memory BAT, the IO space BAT, and a special 142 * BAT for certain machines that have rs6k style PCI bridges 143 * (only on port-prep) 144 */ 145 oea_batinit( 146 PREP_BUS_SPACE_MEM, BAT_BL_256M, 147 PREP_BUS_SPACE_IO, BAT_BL_256M, 148 #ifdef prep 149 0xbf800000, BAT_BL_8M, 150 #endif 151 0); 152 153 /* Install vectors and interrupt handler. */ 154 oea_init(NULL); 155 156 /* Initialize bus_space. */ 157 prep_bus_space_init(); 158 159 /* Initialize the console asap. */ 160 consinit(); 161 162 /* Set the page size */ 163 uvm_setpagesize(); 164 165 /* Initialize pmap module */ 166 pmap_bootstrap(startkernel, endkernel); 167 168 #if NKSYMS || defined(DDB) || defined(LKM) 169 ksyms_init((int)((u_long)endsym - (u_long)startsym), startsym, endsym); 170 #endif 171 172 #ifdef DDB 173 boothowto = args; 174 if (boothowto & RB_KDB) 175 Debugger(); 176 #endif 177 } 178 179 void 180 mem_regions(struct mem_region **mem, struct mem_region **avail) 181 { 182 183 *mem = physmemr; 184 *avail = availmemr; 185 } 186