1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <kmdb/kmdb_auxv.h> 30 #include <kmdb/kctl/kctl.h> 31 32 #include <sys/bootconf.h> 33 #include <sys/kobj.h> 34 #include <sys/kobj_impl.h> 35 #include <sys/cpuvar.h> 36 #include <sys/kdi_impl.h> 37 #include <sys/x86_archext.h> 38 #include <sys/controlregs.h> 39 #include <sys/archsystm.h> 40 41 static int 42 kctl_boot_prop_read(char *pname, char *prop_buf, int buf_len) 43 { 44 struct bootops *ops = kctl.kctl_boot_ops; 45 int len; 46 47 len = BOP_GETPROPLEN(ops, pname); 48 if (len > 0 && len <= buf_len) { 49 (void) BOP_GETPROP(ops, pname, (void *)prop_buf); 50 return (1); 51 } 52 53 return (0); 54 } 55 56 static int 57 kctl_ddi_prop_read(char *pname, char *prop_buf, int buf_len) 58 { 59 dev_info_t *dip = ddi_root_node(); 60 char *val; 61 int ret = 0; 62 63 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, 64 DDI_PROP_DONTPASS, pname, &val) != DDI_SUCCESS) 65 return (0); 66 67 if (strlen(val) < buf_len) { 68 (void) strcpy(prop_buf, val); 69 ret = 1; 70 } 71 72 ddi_prop_free(val); 73 return (ret); 74 } 75 76 /* 77 * We don't have any property-walking routines, so we have to specifically 78 * query and thus have guilty knowledge of the properties that the 79 * debugger wants to see. 80 * 81 * Here actually we only support four console properties: 82 * input-device, output-device, ttya-mode, ttyb-mode. 83 */ 84 #define KCTL_PROPNV_NENT 4 85 86 static kmdb_auxv_nv_t * 87 kctl_pcache_create(int *nprops) 88 { 89 int (*preader)(char *, char *, int); 90 kmdb_auxv_nv_t *pnv; 91 size_t psz = sizeof (kmdb_auxv_nv_t) * KCTL_PROPNV_NENT; 92 93 if (kctl.kctl_boot_loaded) { 94 preader = kctl_boot_prop_read; 95 } else { 96 preader = kctl_ddi_prop_read; 97 } 98 99 pnv = kobj_alloc(psz, KM_WAIT); 100 101 (void) strcpy((&pnv[0])->kanv_name, "input-device"); 102 (void) strcpy((&pnv[1])->kanv_name, "output-device"); 103 (void) strcpy((&pnv[2])->kanv_name, "ttya-mode"); 104 (void) strcpy((&pnv[3])->kanv_name, "ttyb-mode"); 105 106 /* 107 * console is defined by "console" property, with 108 * fallback on the old "input-device" property. 109 */ 110 (void) strcpy((&pnv[0])->kanv_val, "text"); /* default to screen */ 111 if (!preader("console", (&pnv[0])->kanv_val, 112 sizeof ((&pnv[0])->kanv_val))) 113 (void) preader("input-device", (&pnv[0])->kanv_val, 114 sizeof ((&pnv[0])->kanv_val)); 115 116 if (strcmp((&pnv[0])->kanv_val, "ttya") == 0 || 117 strcmp((&pnv[0])->kanv_val, "ttyb") == 0) { 118 (void) strcpy((&pnv[1])->kanv_val, (&pnv[0])->kanv_val); 119 } else { 120 (void) strcpy((&pnv[0])->kanv_val, "keyboard"); 121 (void) strcpy((&pnv[1])->kanv_val, "screen"); 122 } 123 124 if (!preader((&pnv[2])->kanv_name, (&pnv[2])->kanv_val, 125 sizeof ((&pnv[2])->kanv_val))) 126 (void) strcpy((&pnv[2])->kanv_val, "9600,8,n,1,-"); 127 128 if (!preader((&pnv[3])->kanv_name, (&pnv[3])->kanv_val, 129 sizeof ((&pnv[3])->kanv_val))) 130 (void) strcpy((&pnv[3])->kanv_val, "9600,8,n,1,-"); 131 132 *nprops = KCTL_PROPNV_NENT; 133 return (pnv); 134 } 135 136 static void 137 kctl_pcache_destroy(kmdb_auxv_nv_t *pnv) 138 { 139 kobj_free(pnv, sizeof (kmdb_auxv_nv_t) * KCTL_PROPNV_NENT); 140 } 141 142 void 143 kctl_auxv_init_isadep(kmdb_auxv_t *kav, void *romp) 144 { 145 kav->kav_pcache = kctl_pcache_create(&kav->kav_nprops); 146 kav->kav_romp = romp; 147 } 148 149 void 150 kctl_auxv_fini_isadep(kmdb_auxv_t *kav) 151 { 152 if (kav->kav_pcache != NULL) 153 kctl_pcache_destroy(kav->kav_pcache); 154 } 155 156 int 157 kctl_preactivate_isadep(void) 158 { 159 return (0); 160 } 161 162 /*ARGSUSED*/ 163 void 164 kctl_activate_isadep(kdi_debugvec_t *dvec) 165 { 166 dvec->dv_kctl_vmready = hat_kdi_init; 167 168 if (!kctl.kctl_boot_loaded) 169 hat_kdi_init(); 170 } 171 172 void 173 kctl_depreactivate_isadep(void) 174 { 175 } 176 177 /* 178 * Many common kernel functions assume that %gs can be deferenced, and 179 * fail horribly if it cannot. Ask the kernel to set up a temporary 180 * mapping to a fake cpu_t so that we can call such functions during 181 * initialization. 182 */ 183 void * 184 kctl_boot_tmpinit(void) 185 { 186 return (boot_kdi_tmpinit()); 187 } 188 189 void 190 kctl_boot_tmpfini(void *old) 191 { 192 boot_kdi_tmpfini(old); 193 } 194