boot.c revision 1.15
1 /* $NetBSD: boot.c,v 1.15 2008/05/14 13:29:28 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 Izumi Tsutsui. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 /*- 28 * Copyright (C) 1999 Tsubai Masanari. All rights reserved. 29 * 30 * Redistribution and use in source and binary forms, with or without 31 * modification, are permitted provided that the following conditions 32 * are met: 33 * 1. Redistributions of source code must retain the above copyright 34 * notice, this list of conditions and the following disclaimer. 35 * 2. Redistributions in binary form must reproduce the above copyright 36 * notice, this list of conditions and the following disclaimer in the 37 * documentation and/or other materials provided with the distribution. 38 * 3. The name of the author may not be used to endorse or promote products 39 * derived from this software without specific prior written permission. 40 * 41 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 42 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 44 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 45 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 47 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 48 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 49 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 50 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 51 */ 52 53 #include <lib/libkern/libkern.h> 54 #include <lib/libsa/stand.h> 55 #include <lib/libsa/loadfile.h> 56 57 #include <machine/romcall.h> 58 59 void boot(uint32_t, uint32_t, uint32_t, uint32_t); 60 extern void ICIA(void); 61 62 /* version strings in vers.c (generated by newvers.sh) */ 63 extern const char bootprog_name[]; 64 extern const char bootprog_rev[]; 65 extern const char bootprog_date[]; 66 extern const char bootprog_maker[]; 67 68 char *devs[] = { "hd", "fh", "fd", NULL, NULL, "rd", "st" }; 69 char *kernels[] = { "/netbsd", "/netbsd.gz", NULL }; 70 71 #ifdef BOOT_DEBUG 72 # define DPRINTF printf 73 #else 74 # define DPRINTF while (0) printf 75 #endif 76 77 void 78 boot(uint32_t d4, uint32_t d5, uint32_t d6, uint32_t d7) 79 { 80 int fd, i; 81 int ctlr, unit, part, type; 82 uint32_t bootdev = d6; 83 char *netbsd = (char *)d5; 84 u_long marks[MARK_MAX]; 85 static char devname[32], file[32]; 86 void (*entry)(void); 87 88 printf("%s Secondary Boot, Revision %s\n", 89 bootprog_name, bootprog_rev); 90 printf("(%s, %s)\n", bootprog_maker, bootprog_date); 91 92 /* bootname is "boot" by default. */ 93 if (netbsd == NULL || strcmp(netbsd, "boot") == 0 || 94 strcmp(netbsd, "/boot") == 0) 95 netbsd = ""; 96 97 DPRINTF("howto = 0x%x\n", d7); 98 DPRINTF("bootdev = 0x%x\n", bootdev); 99 DPRINTF("bootname = %s\n", netbsd); 100 DPRINTF("maxmem = 0x%x\n", d4); 101 102 #define SET_MAGIC(bootdev, magic) ((bootdev & 0x0fffffff)| (magic << 28)) 103 /* PROM monitor passes 0xa, but NEWS-OS /boot passed 0x5... */ 104 bootdev = SET_MAGIC(bootdev, 5); 105 106 ctlr = BOOTDEV_CTLR(bootdev); 107 unit = BOOTDEV_UNIT(bootdev); 108 part = BOOTDEV_PART(bootdev); 109 type = BOOTDEV_TYPE(bootdev); 110 111 marks[MARK_START] = 0; 112 113 if (devs[type] == NULL) { 114 printf("unknown bootdev (0x%x)\n", bootdev); 115 return; 116 } 117 118 sprintf(devname, "%s(%d,%d,%d)", devs[type], ctlr, unit, part); 119 printf("Booting %s%s\n", devname, netbsd); 120 121 /* use user specified kernel name if exists */ 122 if (*netbsd) { 123 kernels[0] = netbsd; 124 kernels[1] = NULL; 125 } 126 127 for (i = 0; kernels[i]; i++) { 128 sprintf(file, "%s%s", devname, kernels[i]); 129 DPRINTF("trying %s...\n", file); 130 fd = loadfile(file, marks, LOAD_KERNEL); 131 if (fd != -1) 132 break; 133 } 134 if (kernels[i] == NULL) { 135 #if 0 /* bootxx() may be overrided by loaded kernel */ 136 return; 137 #else 138 rom_halt(); 139 /* NOTREACHED */ 140 #endif 141 } 142 143 DPRINTF("entry = 0x%x\n", (int)marks[MARK_ENTRY]); 144 DPRINTF("ssym = 0x%x\n", (int)marks[MARK_SYM]); 145 DPRINTF("esym = 0x%x\n", (int)marks[MARK_END]); 146 147 entry = (void *)marks[MARK_ENTRY]; 148 149 printf("\n"); 150 151 ICIA(); 152 __asm volatile ("movl %0,%%d7" : : "m" (d7)); 153 __asm volatile ("movl %0,%%d6" : : "m" (bootdev)); 154 __asm volatile ("movl %0,%%d5" : : "m" (netbsd)); 155 __asm volatile ("movl %0,%%d4" : : "m" (d4)); 156 __asm volatile ("movl %0,%%d2" : : "m" (marks[MARK_END])); 157 (*entry)(); 158 } 159 160 void 161 _rtt(void) 162 { 163 164 rom_halt(); 165 for (;;) 166 ; 167 /* NOTREACHED */ 168 } 169
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