1 /* $NetBSD: prep_machdep.c,v 1.2 2007/10/17 19:56:43 garbled 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * This is a set of general routines that most PReP-similar machines have 41 * in common. Machines that use these routines do not have to be fully 42 * PReP compliant, the only requirement is that they use a PReP memory map. 43 * IE, io at 0x80000000 and mem at 0xc0000000. 44 */ 45 46 #include <sys/cdefs.h> 47 __KERNEL_RCSID(0, "$NetBSD: prep_machdep.c,v 1.2 2007/10/17 19:56:43 garbled Exp $"); 48 49 #include <sys/param.h> 50 #include <sys/extent.h> 51 #include <sys/kernel.h> 52 #include <sys/malloc.h> 53 #include <sys/reboot.h> 54 #include <sys/ksyms.h> 55 56 #include <uvm/uvm_extern.h> 57 #include <machine/powerpc.h> 58 #include <machine/bus.h> 59 #include <machine/pmap.h> 60 #include <powerpc/oea/bat.h> 61 62 #include "opt_ddb.h" 63 #ifdef DDB 64 #include <machine/db_machdep.h> 65 #include <ddb/db_extern.h> 66 #endif 67 68 #include "ksyms.h" 69 70 #if NKSYMS || defined(DDB) || defined(LKM) 71 extern void *endsym, *startsym; 72 #endif 73 extern struct mem_region physmemr[2], availmemr[2]; 74 75 struct powerpc_bus_space prep_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_PHYS_SIZE_IO, 80 }; 81 82 struct powerpc_bus_space genppc_isa_io_space_tag = { 83 .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_IO_TYPE, 84 .pbs_offset = PREP_BUS_SPACE_IO, 85 .pbs_base = 0x00000000, 86 .pbs_limit = PREP_ISA_SIZE_IO, 87 }; 88 89 struct powerpc_bus_space prep_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_PHYS_SIZE_MEM, 94 }; 95 96 struct powerpc_bus_space genppc_isa_mem_space_tag = { 97 .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 98 .pbs_offset = PREP_BUS_SPACE_MEM, 99 .pbs_base = 0x00000000, 100 .pbs_limit = PREP_ISA_SIZE_MEM, 101 }; 102 103 static char ex_storage[2][EXTENT_FIXED_STORAGE_SIZE(8)] 104 __attribute__((aligned(8))); 105 106 void 107 prep_bus_space_init(void) 108 { 109 int error; 110 111 error = bus_space_init(&prep_io_space_tag, "ioport", 112 ex_storage[0], sizeof(ex_storage[0])); 113 if (error) 114 panic("prep_bus_space_init: can't init io tag"); 115 116 error = extent_alloc_region(prep_io_space_tag.pbs_extent, 117 PREP_PHYS_RESVD_START_IO, PREP_PHYS_RESVD_SIZE_IO, EX_NOWAIT); 118 if (error) 119 panic("prep_bus_space_init: can't block out reserved I/O" 120 " space 0x10000-0x7fffff: error=%d", error); 121 122 error = bus_space_init(&prep_mem_space_tag, "iomem", 123 ex_storage[1], sizeof(ex_storage[1])); 124 if (error) 125 panic("prep_bus_space_init: can't init mem tag"); 126 127 genppc_isa_io_space_tag.pbs_extent = prep_io_space_tag.pbs_extent; 128 error = bus_space_init(&genppc_isa_io_space_tag, "isa-ioport", NULL, 0); if (error) 129 panic("prep_bus_space_init: can't init isa io tag"); 130 131 genppc_isa_mem_space_tag.pbs_extent = prep_mem_space_tag.pbs_extent; 132 error = bus_space_init(&genppc_isa_mem_space_tag, "isa-iomem", NULL, 0); 133 if (error) 134 panic("prep_bus_space_init: can't init isa mem tag"); 135 } 136 137 /* 138 * just a few calls used in initppc() all in one place so everything gets 139 * done the same across the ports 140 */ 141 142 void 143 prep_initppc(u_long startkernel, u_long endkernel, u_int args) 144 { 145 146 /* 147 * Now setup fixed bat registers 148 * We setup the memory BAT, the IO space BAT, and a special 149 * BAT for certain machines that have rs6k style PCI bridges 150 * (only on port-prep) 151 */ 152 oea_batinit( 153 PREP_BUS_SPACE_MEM, BAT_BL_256M, 154 PREP_BUS_SPACE_IO, BAT_BL_256M, 155 #ifdef prep 156 0xbf800000, BAT_BL_8M, 157 #endif 158 0); 159 160 /* Install vectors and interrupt handler. */ 161 oea_init(NULL); 162 163 /* Initialize bus_space. */ 164 prep_bus_space_init(); 165 166 /* Initialize the console asap. */ 167 consinit(); 168 169 /* Set the page size */ 170 uvm_setpagesize(); 171 172 /* Initialize pmap module */ 173 pmap_bootstrap(startkernel, endkernel); 174 175 #if NKSYMS || defined(DDB) || defined(LKM) 176 ksyms_init((int)((u_long)endsym - (u_long)startsym), startsym, endsym); 177 #endif 178 179 #ifdef DDB 180 boothowto = args; 181 if (boothowto & RB_KDB) 182 Debugger(); 183 #endif 184 } 185 186 void 187 mem_regions(struct mem_region **mem, struct mem_region **avail) 188 { 189 190 *mem = physmemr; 191 *avail = availmemr; 192 } 193