1 /* $NetBSD: arcbios.c,v 1.13 2011/02/20 08:02:46 matt 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 * 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 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: arcbios.c,v 1.13 2011/02/20 08:02:46 matt Exp $"); 34 35 #include <sys/param.h> 36 37 #include <sys/systm.h> 38 #include <dev/cons.h> 39 #include <sys/conf.h> 40 41 #include <dev/arcbios/arcbios.h> 42 #include <dev/arcbios/arcbiosvar.h> 43 44 const struct arcbios_spb *ARCBIOS_SPB; 45 const struct arcbios_fv *ARCBIOS; 46 47 char arcbios_sysid_vendor[ARCBIOS_SYSID_FIELDLEN + 1]; 48 char arcbios_sysid_product[ARCBIOS_SYSID_FIELDLEN + 1]; 49 50 char arcbios_system_identifier[64 + 1]; 51 52 int arcbios_cngetc(dev_t); 53 void arcbios_cnputc(dev_t, int); 54 55 void arcbios_fetch_system_identifier(struct arcbios_component *, 56 struct arcbios_treewalk_context *); 57 58 struct consdev arcbios_cn = { 59 NULL, NULL, arcbios_cngetc, arcbios_cnputc, nullcnpollc, 60 NULL, NULL, NULL, NODEV, CN_NORMAL, 61 }; 62 63 extern const struct cdevsw arcbios_cdevsw; 64 65 /* 66 * arcbios_init: 67 * 68 * Initialize the ARC BIOS. 69 */ 70 int 71 arcbios_init(vaddr_t pblkva) 72 { 73 int maj; 74 struct arcbios_sysid *sid; 75 76 ARCBIOS_SPB = (struct arcbios_spb *) pblkva; 77 78 switch (ARCBIOS_SPB->SPBSignature) { 79 case ARCBIOS_SPB_SIGNATURE: 80 case ARCBIOS_SPB_SIGNATURE_1: 81 /* Okay. */ 82 break; 83 84 default: 85 /* Don't know what this is. */ 86 return (1); 87 } 88 89 /* Initialize our pointer to the firmware vector. */ 90 ARCBIOS = (void *)(intptr_t)ARCBIOS_SPB->FirmwareVector; 91 92 /* Find the ARC BIOS console device major (needed by cnopen) */ 93 maj = cdevsw_lookup_major(&arcbios_cdevsw); 94 95 arcbios_cn.cn_dev = makedev(maj, 0); 96 97 /* Initialize the bootstrap console. */ 98 cn_tab = &arcbios_cn; 99 100 /* 101 * Fetch the system ID. 102 */ 103 sid = arcbios_GetSystemId(); 104 if (sid != NULL) { 105 memcpy(arcbios_sysid_vendor, sid->VendorId, 106 sizeof(sid->VendorId)); 107 arcbios_sysid_vendor[sizeof(sid->VendorId)] = '\0'; 108 109 memcpy(arcbios_sysid_product, sid->ProductId, 110 sizeof(sid->ProductId)); 111 arcbios_sysid_product[sizeof(sid->ProductId)] = '\0'; 112 } 113 114 /* 115 * Fetch the identifier string from the `system' component. 116 * Machdep code will use this to initialize the system type. 117 */ 118 arcbios_tree_walk(arcbios_fetch_system_identifier, NULL); 119 120 return (0); 121 } 122 123 void 124 arcbios_fetch_system_identifier(struct arcbios_component *node, 125 struct arcbios_treewalk_context *atc) 126 { 127 128 switch (node->Class) { 129 case COMPONENT_CLASS_SystemClass: 130 arcbios_component_id_copy(node, 131 arcbios_system_identifier, 132 sizeof(arcbios_system_identifier)); 133 atc->atc_terminate = 1; 134 break; 135 136 default: 137 break; 138 } 139 } 140 141 /**************************************************************************** 142 * ARC component tree walking routines. 143 ****************************************************************************/ 144 145 static void 146 arcbios_subtree_walk(struct arcbios_component *node, 147 void (*func)(struct arcbios_component *, struct arcbios_treewalk_context *), 148 struct arcbios_treewalk_context *atc) 149 { 150 151 for (node = arcbios_GetChild(node); 152 node != NULL && atc->atc_terminate == 0; 153 node = arcbios_GetPeer(node)) { 154 (*func)(node, atc); 155 if (atc->atc_terminate) 156 return; 157 arcbios_subtree_walk(node, func, atc); 158 } 159 } 160 161 void 162 arcbios_tree_walk(void (*func)(struct arcbios_component *, 163 struct arcbios_treewalk_context *), void *cookie) 164 { 165 struct arcbios_treewalk_context atc; 166 167 atc.atc_cookie = cookie; 168 atc.atc_terminate = 0; 169 170 arcbios_subtree_walk(NULL, func, &atc); 171 } 172 173 void 174 arcbios_component_id_copy(struct arcbios_component *node, 175 char *dst, size_t dstsize) 176 { 177 178 dstsize--; 179 if (dstsize > node->IdentifierLength) 180 dstsize = node->IdentifierLength; 181 memcpy(dst, (void *)(intptr_t)node->Identifier, dstsize); 182 dst[dstsize] = '\0'; 183 } 184 185 /**************************************************************************** 186 * Bootstrap console routines. 187 ****************************************************************************/ 188 189 int 190 arcbios_cngetc(dev_t dev) 191 { 192 u_long count; 193 char c; 194 195 arcbios_Read(ARCBIOS_STDIN, &c, 1, &count); 196 return (c); 197 } 198 199 void 200 arcbios_cnputc(dev_t dev, int c) 201 { 202 u_long count; 203 char ch = c; 204 205 arcbios_Write(ARCBIOS_STDOUT, &ch, 1, &count); 206 } 207
Indexes created Sat Sep 20 22:09:52 GMT 2025