1 /* $NetBSD: prompatch.c,v 1.2 2001/09/26 20:53:09 eeh Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Valeriy E. Ushakov 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/param.h> 31 #include <lib/libsa/stand.h> 32 #include <machine/promlib.h> 33 34 void prom_patch(void); 35 36 /* 37 * Each patch entry is processed by: 38 * printf(message); prom_interpret(patch); printf("\n"); 39 */ 40 struct patch_entry { 41 char *message; 42 char *patch; 43 }; 44 45 /* 46 * PROM patches to apply to machine matching name/promvers. 47 */ 48 struct prom_patch { 49 char *name; /* "name" of the root node */ 50 int promvers; /* prom_version() */ 51 struct patch_entry *patches; 52 }; 53 54 55 56 /* 57 * Patches for JavaStation 1 with OBP 3.* (OpenFirmware). 58 * PROM in these machines is crippled in many ways. 59 */ 60 static struct patch_entry patch_js1_of[] = { 61 62 /* 63 * JS1/OF has no cpu node in the device tree. Create one to save us a 64 * _lot_ of headache in cpu.c and mainbus_attach. Mostly copied from 65 * OBP2. While clock-frequency is usually at the root node, add it 66 * here for brevity as kernel checks cpu node for this property anyway. 67 */ 68 { "cpu: creating node ", /* NB: space at the end is intentional */ 69 "0 0 0 0 \" /\" begin-package" 70 " \" FMI,MB86904\" device-name" /* NB: will print the name */ 71 " \" cpu\" device-type" 72 " 0 \" mid\" integer-property" 73 74 " 8 \" sparc-version\" integer-property" 75 " 4 \" version\" integer-property" 76 " 0 \" implementation\" integer-property" 77 " 4 \" psr-version\" integer-property" 78 " 0 \" psr-implementation\" integer-property" 79 80 " d# 100000000 \" clock-frequency\" integer-property" 81 82 " d# 4096 \" page-size\" integer-property" 83 " d# 256 \" mmu-nctx\" integer-property" 84 85 " 2 \" ncaches\" integer-property" 86 87 " d# 512 \" icache-nlines\" integer-property" 88 " d# 32 \" icache-line-size\" integer-property" 89 " 1 \" icache-associativity\" integer-property" 90 91 " d# 512 \" dcache-nlines\" integer-property" 92 " d# 16 \" dcache-line-size\" integer-property" 93 " 1 \" dcache-associativity\" integer-property" 94 95 " 0 0 \" cache-physical?\" property" 96 " 0 0 \" cache-coherence?\" property" 97 98 " end-package" 99 }, 100 101 /* 102 * mk48txx_attach needs a model name, spare clockattach from guesswork. 103 */ 104 { "eeprom: adding \"model\"", 105 "dev /obio/eeprom \" mk48t08\" model device-end" 106 }, 107 108 /* 109 * "interrupts" property is bogusly zero, delete it and let 110 * sbus_get_intr fallback to correct "intr" property 111 */ 112 { "le: deleting bogus \"interrupts\"", 113 "dev /sbus/ledma/le \" interrupts\" delete-property device-end" 114 }, 115 116 /* 117 * Give "su" (com port) "interrupts" property. 118 */ 119 { "su: adding \"interrupts\"", 120 "dev /obio/su d# 13 \" interrupts\" integer-property device-end" 121 }, 122 123 /* 124 * Give "8042" (pckbc) "interrupts" property. 125 */ 126 { "8042: adding \"interrupts\"", 127 "dev /obio/8042 d# 13 \" interrupts\" integer-property device-end" 128 }, 129 130 { NULL, NULL } 131 }; /* patch_js1_of */ 132 133 134 135 static struct prom_patch prom_patch_tab[] = { 136 { "SUNW,JDM1", PROM_OPENFIRM, patch_js1_of }, 137 { NULL, 0, NULL } 138 }; 139 140 141 /* 142 * Check if this machine needs tweaks to its PROM. It's simpler to 143 * fix PROM than to invent workarounds in the kernel code. We do this 144 * patching in the secondary boot to avoid wasting space in the 145 * kernel. 146 */ 147 void 148 prom_patch(void) 149 { 150 char namebuf[32]; 151 char *propval; 152 struct prom_patch *p; 153 154 propval = PROM_getpropstringA(prom_findroot(), "name", 155 namebuf, sizeof(namebuf)); 156 if (propval == NULL) 157 return; 158 159 for (p = prom_patch_tab; p->name != NULL; ++p) { 160 if (p->promvers == prom_version() 161 && strcmp(p->name, namebuf) == 0) { 162 struct patch_entry *e; 163 164 printf("Patching PROM v%d for %s\n", 165 p->promvers, p->name); 166 for (e = p->patches; e->message != NULL; ++e) { 167 printf("%s", e->message); 168 prom_interpret(e->patch); 169 printf("\n"); 170 } 171 return; 172 } 173 } 174 } 175