1 /* $NetBSD: boot.c,v 1.7 2002/04/30 13:10:56 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (C) 1999 Izumi Tsutsui. All rights reserved. 5 * Copyright (C) 1999 Tsubai Masanari. 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 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <lib/libkern/libkern.h> 31 #include <lib/libsa/stand.h> 32 #include <lib/libsa/loadfile.h> 33 34 #include <machine/romcall.h> 35 36 extern void ICIA(void); 37 38 /* version strings in vers.c (generated by newvers.sh) */ 39 extern const char bootprog_name[]; 40 extern const char bootprog_rev[]; 41 extern const char bootprog_date[]; 42 extern const char bootprog_maker[]; 43 44 char *devs[] = { "hd", "fh", "fd", NULL, NULL, "rd", "st" }; 45 char *kernels[] = { "/netbsd", "/netbsd.gz", NULL }; 46 47 #ifdef BOOT_DEBUG 48 # define DPRINTF(x) printf x 49 #else 50 # define DPRINTF(x) 51 #endif 52 53 void 54 boot(d4, d5, d6, d7) 55 u_int32_t d4, d5, d6, d7; 56 { 57 int fd, i; 58 int ctlr, unit, part, type; 59 u_int32_t bootdev = d6; 60 char *netbsd = (char *)d5; 61 u_long marks[MARK_MAX]; 62 static char devname[32], file[32]; 63 void (*entry)(void); 64 65 printf("\n"); 66 printf("%s Secondary Boot, Revision %s\n", 67 bootprog_name, bootprog_rev); 68 printf("(%s, %s)\n", bootprog_maker, bootprog_date); 69 printf("\n"); 70 71 /* bootname is "boot" by default. */ 72 if (netbsd == NULL || strcmp(netbsd, "boot") == 0 || 73 strcmp(netbsd, "/boot") == 0) 74 netbsd = ""; 75 76 DPRINTF(("howto = 0x%x\n", d7)); 77 DPRINTF(("bootdev = 0x%x\n", bootdev)); 78 DPRINTF(("bootname = %s\n", netbsd)); 79 DPRINTF(("maxmem = 0x%x\n", d4)); 80 81 #define SET_MAGIC(bootdev, magic) ((bootdev & 0x0fffffff)| (magic << 28)) 82 /* PROM monitor passes 0xa, but NEWS-OS /boot passed 0x5... */ 83 bootdev = SET_MAGIC(bootdev, 5); 84 85 ctlr = BOOTDEV_CTLR(bootdev); 86 unit = BOOTDEV_UNIT(bootdev); 87 part = BOOTDEV_PART(bootdev); 88 type = BOOTDEV_TYPE(bootdev); 89 90 marks[MARK_START] = 0; 91 92 if (devs[type] == NULL) { 93 printf("unknown bootdev (0x%x)\n", bootdev); 94 return; 95 } 96 97 sprintf(devname, "%s(%d,%d,%d)", devs[type], ctlr, unit, part); 98 printf("Booting %s%s\n", devname, netbsd); 99 100 /* use user specified kernel name if exists */ 101 if (*netbsd) { 102 kernels[0] = netbsd; 103 kernels[1] = NULL; 104 } 105 106 for (i = 0; kernels[i]; i++) { 107 sprintf(file, "%s%s", devname, kernels[i]); 108 DPRINTF(("trying %s...\n", file)); 109 fd = loadfile(file, marks, LOAD_KERNEL); 110 if (fd != -1) 111 break; 112 } 113 if (kernels[i] == NULL) { 114 #if 0 /* bootxx() may be overrided by loaded kernel */ 115 return; 116 #else 117 rom_halt(); 118 /* NOTREACHED */ 119 #endif 120 } 121 122 DPRINTF(("entry = 0x%x\n", (int)marks[MARK_ENTRY])); 123 DPRINTF(("ssym = 0x%x\n", (int)marks[MARK_SYM])); 124 DPRINTF(("esym = 0x%x\n", (int)marks[MARK_END])); 125 126 entry = (void *)marks[MARK_ENTRY]; 127 128 printf("\n"); 129 130 ICIA(); 131 __asm __volatile ("movl %0,%%d7" : : "m" (d7)); 132 __asm __volatile ("movl %0,%%d6" : : "m" (bootdev)); 133 __asm __volatile ("movl %0,%%d5" : : "m" (netbsd)); 134 __asm __volatile ("movl %0,%%d4" : : "m" (d4)); 135 __asm __volatile ("movl %0,%%d2" : : "m" (marks[MARK_END])); 136 (*entry)(); 137 } 138 139 void 140 _rtt() 141 { 142 143 rom_halt(); 144 for (;;) 145 ; 146 /* NOTREACHED */ 147 } 148