1 /* $NetBSD: boot.c,v 1.13 2005/12/24 20:07:24 perry 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 printf 49 #else 50 # define DPRINTF while (0) printf 51 #endif 52 53 void 54 boot(uint32_t d4, uint32_t d5, uint32_t d6, uint32_t d7) 55 { 56 int fd, i; 57 int ctlr, unit, part, type; 58 uint32_t bootdev = d6; 59 char *netbsd = (char *)d5; 60 u_long marks[MARK_MAX]; 61 static char devname[32], file[32]; 62 void (*entry)(void); 63 64 printf("%s Secondary Boot, Revision %s\n", 65 bootprog_name, bootprog_rev); 66 printf("(%s, %s)\n", bootprog_maker, bootprog_date); 67 68 /* bootname is "boot" by default. */ 69 if (netbsd == NULL || strcmp(netbsd, "boot") == 0 || 70 strcmp(netbsd, "/boot") == 0) 71 netbsd = ""; 72 73 DPRINTF("howto = 0x%x\n", d7); 74 DPRINTF("bootdev = 0x%x\n", bootdev); 75 DPRINTF("bootname = %s\n", netbsd); 76 DPRINTF("maxmem = 0x%x\n", d4); 77 78 #define SET_MAGIC(bootdev, magic) ((bootdev & 0x0fffffff)| (magic << 28)) 79 /* PROM monitor passes 0xa, but NEWS-OS /boot passed 0x5... */ 80 bootdev = SET_MAGIC(bootdev, 5); 81 82 ctlr = BOOTDEV_CTLR(bootdev); 83 unit = BOOTDEV_UNIT(bootdev); 84 part = BOOTDEV_PART(bootdev); 85 type = BOOTDEV_TYPE(bootdev); 86 87 marks[MARK_START] = 0; 88 89 if (devs[type] == NULL) { 90 printf("unknown bootdev (0x%x)\n", bootdev); 91 return; 92 } 93 94 sprintf(devname, "%s(%d,%d,%d)", devs[type], ctlr, unit, part); 95 printf("Booting %s%s\n", devname, netbsd); 96 97 /* use user specified kernel name if exists */ 98 if (*netbsd) { 99 kernels[0] = netbsd; 100 kernels[1] = NULL; 101 } 102 103 for (i = 0; kernels[i]; i++) { 104 sprintf(file, "%s%s", devname, kernels[i]); 105 DPRINTF("trying %s...\n", file); 106 fd = loadfile(file, marks, LOAD_KERNEL); 107 if (fd != -1) 108 break; 109 } 110 if (kernels[i] == NULL) { 111 #if 0 /* bootxx() may be overrided by loaded kernel */ 112 return; 113 #else 114 rom_halt(); 115 /* NOTREACHED */ 116 #endif 117 } 118 119 DPRINTF("entry = 0x%x\n", (int)marks[MARK_ENTRY]); 120 DPRINTF("ssym = 0x%x\n", (int)marks[MARK_SYM]); 121 DPRINTF("esym = 0x%x\n", (int)marks[MARK_END]); 122 123 entry = (void *)marks[MARK_ENTRY]; 124 125 printf("\n"); 126 127 ICIA(); 128 __asm volatile ("movl %0,%%d7" : : "m" (d7)); 129 __asm volatile ("movl %0,%%d6" : : "m" (bootdev)); 130 __asm volatile ("movl %0,%%d5" : : "m" (netbsd)); 131 __asm volatile ("movl %0,%%d4" : : "m" (d4)); 132 __asm volatile ("movl %0,%%d2" : : "m" (marks[MARK_END])); 133 (*entry)(); 134 } 135 136 void 137 _rtt(void) 138 { 139 140 rom_halt(); 141 for (;;) 142 ; 143 /* NOTREACHED */ 144 } 145