arcbios.c revision 1.5
1 /* $NetBSD: arcbios.c,v 1.5 2001/11/13 12:53:24 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: arcbios.c,v 1.5 2001/11/13 12:53:24 lukem Exp $"); 41 42 #include <sys/param.h> 43 44 #include <sys/systm.h> 45 #include <dev/cons.h> 46 #include <sys/conf.h> 47 48 #include <dev/arcbios/arcbios.h> 49 #include <dev/arcbios/arcbiosvar.h> 50 51 const struct arcbios_spb *ARCBIOS_SPB; 52 const struct arcbios_fv *ARCBIOS; 53 54 char arcbios_sysid_vendor[ARCBIOS_SYSID_FIELDLEN + 1]; 55 char arcbios_sysid_product[ARCBIOS_SYSID_FIELDLEN + 1]; 56 57 char arcbios_system_identifier[64 + 1]; 58 59 int arcbios_cngetc(dev_t); 60 void arcbios_cnputc(dev_t, int); 61 62 void arcbios_fetch_system_identifier(struct arcbios_component *, 63 struct arcbios_treewalk_context *); 64 65 struct consdev arcbios_cn = { 66 NULL, NULL, arcbios_cngetc, arcbios_cnputc, nullcnpollc, NULL, 67 NODEV, CN_NORMAL, 68 }; 69 70 cdev_decl(arcbios_tty); 71 72 /* 73 * arcbios_init: 74 * 75 * Initialize the ARC BIOS. 76 */ 77 int 78 arcbios_init(vaddr_t pblkva) 79 { 80 int maj; 81 struct arcbios_sysid *sid; 82 83 ARCBIOS_SPB = (struct arcbios_spb *) pblkva; 84 85 switch (ARCBIOS_SPB->SPBSignature) { 86 case ARCBIOS_SPB_SIGNATURE: 87 case ARCBIOS_SPB_SIGNATURE_1: 88 /* Okay. */ 89 break; 90 91 default: 92 /* Don't know what this is. */ 93 return (1); 94 } 95 96 /* Initialize our pointer to the firmware vector. */ 97 ARCBIOS = ARCBIOS_SPB->FirmwareVector; 98 99 /* Find the ARC BIOS console device major (needed by cnopen) */ 100 for (maj = 0; maj < nchrdev; maj++) 101 if (cdevsw[maj].d_open == arcbios_ttyopen) 102 break; 103 104 arcbios_cn.cn_dev = makedev(maj, 0); 105 106 /* Initialize the bootstrap console. */ 107 cn_tab = &arcbios_cn; 108 109 /* 110 * Fetch the system ID. 111 */ 112 sid = (*ARCBIOS->GetSystemId)(); 113 if (sid != NULL) { 114 memcpy(arcbios_sysid_vendor, sid->VendorId, 115 sizeof(sid->VendorId)); 116 arcbios_sysid_vendor[sizeof(sid->VendorId)] = '\0'; 117 118 memcpy(arcbios_sysid_product, sid->ProductId, 119 sizeof(sid->ProductId)); 120 arcbios_sysid_product[sizeof(sid->ProductId)] = '\0'; 121 } 122 123 /* 124 * Fetch the identifier string from the `system' component. 125 * Machdep code will use this to initialize the system type. 126 */ 127 arcbios_tree_walk(arcbios_fetch_system_identifier, NULL); 128 129 return (0); 130 } 131 132 void 133 arcbios_fetch_system_identifier(struct arcbios_component *node, 134 struct arcbios_treewalk_context *atc) 135 { 136 137 switch (node->Class) { 138 case COMPONENT_CLASS_SystemClass: 139 arcbios_component_id_copy(node, 140 arcbios_system_identifier, 141 sizeof(arcbios_system_identifier)); 142 atc->atc_terminate = 1; 143 break; 144 145 default: 146 break; 147 } 148 } 149 150 /**************************************************************************** 151 * ARC component tree walking routines. 152 ****************************************************************************/ 153 154 static void 155 arcbios_subtree_walk(struct arcbios_component *node, 156 void (*func)(struct arcbios_component *, struct arcbios_treewalk_context *), 157 struct arcbios_treewalk_context *atc) 158 { 159 160 for (node = (*ARCBIOS->GetChild)(node); 161 node != NULL && atc->atc_terminate == 0; 162 node = (*ARCBIOS->GetPeer)(node)) { 163 (*func)(node, atc); 164 if (atc->atc_terminate) 165 return; 166 arcbios_subtree_walk(node, func, atc); 167 } 168 } 169 170 void 171 arcbios_tree_walk(void (*func)(struct arcbios_component *, 172 struct arcbios_treewalk_context *), void *cookie) 173 { 174 struct arcbios_treewalk_context atc; 175 176 atc.atc_cookie = cookie; 177 atc.atc_terminate = 0; 178 179 arcbios_subtree_walk(NULL, func, &atc); 180 } 181 182 void 183 arcbios_component_id_copy(struct arcbios_component *node, 184 char *dst, size_t dstsize) 185 { 186 187 dstsize--; 188 if (dstsize > node->IdentifierLength) 189 dstsize = node->IdentifierLength; 190 memcpy(dst, node->Identifier, dstsize); 191 dst[dstsize] = '\0'; 192 } 193 194 /**************************************************************************** 195 * Bootstrap console routines. 196 ****************************************************************************/ 197 198 int 199 arcbios_cngetc(dev_t dev) 200 { 201 uint32_t count; 202 char c; 203 204 (*ARCBIOS->Read)(ARCBIOS_STDIN, &c, 1, &count); 205 return (c); 206 } 207 208 void 209 arcbios_cnputc(dev_t dev, int c) 210 { 211 uint32_t count; 212 char ch = c; 213 214 (*ARCBIOS->Write)(ARCBIOS_STDOUT, &ch, 1, &count); 215 } 216
Indexes created Wed Oct 22 13:09:56 GMT 2025