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 (c) 2012 Gary Mills 24 * 25 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 26 * Use is subject to license terms. 27 */ 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 six console properties: 82 * input-device, output-device, tty[a-d]-mode. 83 */ 84 #define KCTL_PROPNV_NIODEV 2 85 #define KCTL_PROPNV_NTTYMD 4 86 #define KCTL_PROPNV_NENT (KCTL_PROPNV_NIODEV + KCTL_PROPNV_NTTYMD) 87 88 static kmdb_auxv_nv_t * 89 kctl_pcache_create(int *nprops) 90 { 91 int (*preader)(char *, char *, int); 92 kmdb_auxv_nv_t *pnv; 93 size_t psz = sizeof (kmdb_auxv_nv_t) * KCTL_PROPNV_NENT; 94 char *inputdev, *outputdev; 95 int i; 96 char ttymode[] = "ttyX-mode"; 97 98 if (kctl.kctl_boot_loaded) { 99 preader = kctl_boot_prop_read; 100 } else { 101 preader = kctl_ddi_prop_read; 102 } 103 104 pnv = kobj_alloc(psz, KM_WAIT); 105 inputdev = (&pnv[0])->kanv_val; 106 outputdev = (&pnv[1])->kanv_val; 107 108 /* Set the property names. */ 109 (void) strcpy((&pnv[0])->kanv_name, "input-device"); 110 (void) strcpy((&pnv[1])->kanv_name, "output-device"); 111 for (i = 0; i < KCTL_PROPNV_NTTYMD; i++) { 112 ttymode[3] = 'a' + i; 113 (void) strcpy((&pnv[i + KCTL_PROPNV_NIODEV])->kanv_name, 114 ttymode); 115 } 116 117 /* 118 * console is defined by "console" property, with 119 * fallback on the old "input-device" property. 120 */ 121 (void) strcpy(inputdev, "text"); /* default to screen */ 122 if (!preader("console", inputdev, sizeof ((&pnv[0])->kanv_val))) 123 (void) preader("input-device", inputdev, 124 sizeof ((&pnv[0])->kanv_val)); 125 126 if (strncmp(inputdev, "tty", 3) == 0 && 127 inputdev[4] == '\0' && 128 inputdev[3] >= 'a' && 129 inputdev[3] < 'a' + KCTL_PROPNV_NTTYMD) { 130 (void) strcpy(outputdev, inputdev); 131 } else { 132 (void) strcpy(inputdev, "keyboard"); 133 (void) strcpy(outputdev, "screen"); 134 } 135 136 /* Set tty modes or defaults. */ 137 for (i = KCTL_PROPNV_NIODEV; i < KCTL_PROPNV_NENT; i++) { 138 if (!preader((&pnv[i])->kanv_name, (&pnv[i])->kanv_val, 139 sizeof ((&pnv[0])->kanv_val))) 140 (void) strcpy((&pnv[i])->kanv_val, "9600,8,n,1,-"); 141 } 142 143 *nprops = KCTL_PROPNV_NENT; 144 return (pnv); 145 } 146 147 static void 148 kctl_pcache_destroy(kmdb_auxv_nv_t *pnv) 149 { 150 kobj_free(pnv, sizeof (kmdb_auxv_nv_t) * KCTL_PROPNV_NENT); 151 } 152 153 void 154 kctl_auxv_init_isadep(kmdb_auxv_t *kav, void *romp) 155 { 156 kav->kav_pcache = kctl_pcache_create(&kav->kav_nprops); 157 kav->kav_romp = romp; 158 } 159 160 void 161 kctl_auxv_fini_isadep(kmdb_auxv_t *kav) 162 { 163 if (kav->kav_pcache != NULL) 164 kctl_pcache_destroy(kav->kav_pcache); 165 } 166 167 int 168 kctl_preactivate_isadep(void) 169 { 170 return (0); 171 } 172 173 /*ARGSUSED*/ 174 void 175 kctl_activate_isadep(kdi_debugvec_t *dvec) 176 { 177 dvec->dv_kctl_vmready = hat_kdi_init; 178 179 if (!kctl.kctl_boot_loaded) 180 hat_kdi_init(); 181 } 182 183 void 184 kctl_depreactivate_isadep(void) 185 { 186 } 187 188 /* 189 * Many common kernel functions assume that %gs can be deferenced, and 190 * fail horribly if it cannot. Ask the kernel to set up a temporary 191 * mapping to a fake cpu_t so that we can call such functions during 192 * initialization. 193 */ 194 void * 195 kctl_boot_tmpinit(void) 196 { 197 return (boot_kdi_tmpinit()); 198 } 199 200 void 201 kctl_boot_tmpfini(void *old) 202 { 203 boot_kdi_tmpfini(old); 204 } 205