1 /* $NetBSD: prep_machdep.c,v 1.8 2011/08/07 14:47:05 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 1.8 2011/08/07 14:47:05 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/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 <sys/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 #if defined(bebox) 151 0x7ffff000, BAT_BL_128K, /* BeBox Mainboard Registers (4KB) */ 152 #elif defined(prep) 153 0xbf800000, BAT_BL_8M, 154 #endif 155 0); 156 157 /* Install vectors and interrupt handler. */ 158 oea_init(NULL); 159 160 /* Initialize bus_space. */ 161 prep_bus_space_init(); 162 163 /* Initialize the console asap. */ 164 consinit(); 165 166 /* Set the page size */ 167 uvm_setpagesize(); 168 169 /* Initialize pmap module */ 170 pmap_bootstrap(startkernel, endkernel); 171 172 #if NKSYMS || defined(DDB) || defined(MODULAR) 173 ksyms_addsyms_elf((int)((u_long)endsym - (u_long)startsym), startsym, endsym); 174 #endif 175 176 #ifdef DDB 177 boothowto = args; 178 if (boothowto & RB_KDB) 179 Debugger(); 180 #endif 181 } 182 183 void 184 mem_regions(struct mem_region **mem, struct mem_region **avail) 185 { 186 187 *mem = physmemr; 188 *avail = availmemr; 189 } 190