1 /* $NetBSD: prep_machdep.c,v 1.10 2012/02/11 13:53:59 kiyohara 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 1.10 2012/02/11 13:53:59 kiyohara 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/reboot.h> 48 #include <sys/ksyms.h> 49 50 #include <uvm/uvm_extern.h> 51 #include <machine/powerpc.h> 52 #include <sys/bus.h> 53 #include <machine/pmap.h> 54 #include <powerpc/oea/bat.h> 55 56 #include "opt_ddb.h" 57 #ifdef DDB 58 #include <machine/db_machdep.h> 59 #include <ddb/db_extern.h> 60 #endif 61 62 #include "ksyms.h" 63 64 #if NKSYMS || defined(DDB) || defined(MODULAR) 65 extern void *endsym, *startsym; 66 #endif 67 extern struct mem_region physmemr[2], availmemr[2]; 68 69 struct powerpc_bus_space prep_io_space_tag = { 70 .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_IO_TYPE, 71 .pbs_offset = PREP_BUS_SPACE_IO, 72 .pbs_base = 0x00000000, 73 .pbs_limit = PREP_PHYS_SIZE_IO, 74 }; 75 76 struct powerpc_bus_space genppc_isa_io_space_tag = { 77 .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_IO_TYPE, 78 .pbs_offset = PREP_BUS_SPACE_IO, 79 .pbs_base = 0x00000000, 80 .pbs_limit = PREP_ISA_SIZE_IO, 81 }; 82 83 struct powerpc_bus_space prep_mem_space_tag = { 84 .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 85 .pbs_offset = PREP_BUS_SPACE_MEM, 86 .pbs_base = 0x00000000, 87 .pbs_limit = PREP_PHYS_SIZE_MEM, 88 }; 89 90 struct powerpc_bus_space genppc_isa_mem_space_tag = { 91 .pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 92 .pbs_offset = PREP_BUS_SPACE_MEM, 93 .pbs_base = 0x00000000, 94 .pbs_limit = PREP_ISA_SIZE_MEM, 95 }; 96 97 static char ex_storage[2][EXTENT_FIXED_STORAGE_SIZE(8)] 98 __attribute__((aligned(8))); 99 100 void 101 prep_bus_space_init(void) 102 { 103 int error; 104 105 error = bus_space_init(&prep_io_space_tag, "ioport", 106 ex_storage[0], sizeof(ex_storage[0])); 107 if (error) 108 panic("prep_bus_space_init: can't init io tag"); 109 110 error = extent_alloc_region(prep_io_space_tag.pbs_extent, 111 PREP_PHYS_RESVD_START_IO, PREP_PHYS_RESVD_SIZE_IO, EX_NOWAIT); 112 if (error) 113 panic("prep_bus_space_init: can't block out reserved I/O" 114 " space 0x10000-0x7fffff: error=%d", error); 115 116 error = bus_space_init(&prep_mem_space_tag, "iomem", 117 ex_storage[1], sizeof(ex_storage[1])); 118 if (error) 119 panic("prep_bus_space_init: can't init mem tag"); 120 121 genppc_isa_io_space_tag.pbs_extent = prep_io_space_tag.pbs_extent; 122 error = bus_space_init(&genppc_isa_io_space_tag, "isa-ioport", NULL, 0); if (error) 123 panic("prep_bus_space_init: can't init isa io tag"); 124 125 genppc_isa_mem_space_tag.pbs_extent = prep_mem_space_tag.pbs_extent; 126 error = bus_space_init(&genppc_isa_mem_space_tag, "isa-iomem", NULL, 0); 127 if (error) 128 panic("prep_bus_space_init: can't init isa mem tag"); 129 } 130 131 /* 132 * just a few calls used in initppc() all in one place so everything gets 133 * done the same across the ports 134 */ 135 136 void 137 prep_initppc(u_long startkernel, u_long endkernel, u_int args) 138 { 139 140 /* 141 * Now setup fixed bat registers 142 * We setup the memory BAT, the IO space BAT, and a special 143 * BAT for certain machines that have rs6k style PCI bridges 144 * (only on port-prep) 145 */ 146 oea_batinit( 147 PREP_BUS_SPACE_MEM, BAT_BL_256M, 148 PREP_BUS_SPACE_IO, BAT_BL_256M, 149 #if defined(bebox) 150 0x7ffff000, BAT_BL_8M, /* BeBox Mainboard Registers (4KB) */ 151 #elif defined(prep) 152 0xbf800000, BAT_BL_8M, 153 #endif 154 0); 155 156 /* Install vectors and interrupt handler. */ 157 oea_init(NULL); 158 159 /* Initialize bus_space. */ 160 prep_bus_space_init(); 161 162 /* Initialize the console asap. */ 163 consinit(); 164 165 /* Set the page size */ 166 uvm_setpagesize(); 167 168 /* Initialize pmap module */ 169 pmap_bootstrap(startkernel, endkernel); 170 171 #if NKSYMS || defined(DDB) || defined(MODULAR) 172 ksyms_addsyms_elf((int)((u_long)endsym - (u_long)startsym), startsym, endsym); 173 #endif 174 175 #ifdef DDB 176 boothowto = args; 177 if (boothowto & RB_KDB) 178 Debugger(); 179 #endif 180 } 181 182 void 183 mem_regions(struct mem_region **mem, struct mem_region **avail) 184 { 185 186 *mem = physmemr; 187 *avail = availmemr; 188 } 189