Annotation of sys/arch/macppc/stand/main.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: main.c,v 1.3 2007/06/24 14:58:12 tom Exp $ */
! 2: /* $NetBSD: boot.c,v 1.1 1997/04/16 20:29:17 thorpej Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1997 Jason R. Thorpe. All rights reserved.
! 6: * Copyright (C) 1995, 1996 Wolfgang Solfrank.
! 7: * Copyright (C) 1995, 1996 TooLs GmbH.
! 8: * All rights reserved.
! 9: *
! 10: * ELF support derived from NetBSD/alpha's boot loader, written
! 11: * by Christopher G. Demetriou.
! 12: *
! 13: * Redistribution and use in source and binary forms, with or without
! 14: * modification, are permitted provided that the following conditions
! 15: * are met:
! 16: * 1. Redistributions of source code must retain the above copyright
! 17: * notice, this list of conditions and the following disclaimer.
! 18: * 2. Redistributions in binary form must reproduce the above copyright
! 19: * notice, this list of conditions and the following disclaimer in the
! 20: * documentation and/or other materials provided with the distribution.
! 21: * 3. All advertising materials mentioning features or use of this software
! 22: * must display the following acknowledgement:
! 23: * This product includes software developed by TooLs GmbH.
! 24: * 4. The name of TooLs GmbH may not be used to endorse or promote products
! 25: * derived from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
! 28: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 29: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 30: * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
! 31: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
! 32: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! 33: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! 34: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
! 35: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! 36: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 37: */
! 38:
! 39: /*
! 40: * First try for the boot code
! 41: *
! 42: * Input syntax is:
! 43: * [promdev[{:|,}partition]]/[filename] [flags]
! 44: */
! 45:
! 46: #define ELFSIZE 32 /* We use 32-bit ELF. */
! 47:
! 48: #include <sys/param.h>
! 49: #include <sys/exec.h>
! 50: #include <sys/exec_elf.h>
! 51: #include <sys/reboot.h>
! 52: #include <sys/disklabel.h>
! 53:
! 54: #include <lib/libkern/libkern.h>
! 55: #include <lib/libsa/stand.h>
! 56: #include <lib/libsa/loadfile.h>
! 57: #include <stand/boot/cmd.h>
! 58:
! 59:
! 60: #include <machine/cpu.h>
! 61:
! 62: #include <macppc/stand/ofdev.h>
! 63: #include <macppc/stand/openfirm.h>
! 64:
! 65: char bootdev[128];
! 66: int boothowto;
! 67: int debug;
! 68:
! 69:
! 70: void
! 71: get_alt_bootdev(char *, size_t, char *, size_t);
! 72:
! 73: static void
! 74: prom2boot(char *dev)
! 75: {
! 76: char *cp, *lp = 0;
! 77:
! 78: for (cp = dev; *cp; cp++)
! 79: if (*cp == ':')
! 80: lp = cp;
! 81: if (!lp)
! 82: lp = cp;
! 83: *lp = 0;
! 84: }
! 85:
! 86: static void
! 87: parseargs(char *str, int *howtop)
! 88: {
! 89: char *cp;
! 90:
! 91: /* Allow user to drop back to the PROM. */
! 92: if (strcmp(str, "exit") == 0)
! 93: _rtt();
! 94:
! 95: *howtop = 0;
! 96: if (str[0] == '\0')
! 97: return;
! 98:
! 99: cp = str;
! 100: while (*cp != 0) {
! 101: /* check for - */
! 102: if (*cp == '-')
! 103: break; /* start of options found */
! 104:
! 105: while (*cp != 0 && *cp != ' ')
! 106: cp++; /* character in the middle of the name, skip */
! 107:
! 108: while (*cp == ' ')
! 109: *cp++ = 0;
! 110: }
! 111: if (!*cp)
! 112: return;
! 113:
! 114: *cp++ = 0;
! 115: while (*cp) {
! 116: switch (*cp++) {
! 117: case 'a':
! 118: *howtop |= RB_ASKNAME;
! 119: break;
! 120: case 'c':
! 121: *howtop |= RB_CONFIG;
! 122: break;
! 123: case 's':
! 124: *howtop |= RB_SINGLE;
! 125: break;
! 126: case 'd':
! 127: *howtop |= RB_KDB;
! 128: debug = 1;
! 129: break;
! 130: }
! 131: }
! 132: }
! 133:
! 134: static void
! 135: chain(void (*entry)(), char *args, void *ssym, void *esym)
! 136: {
! 137: extern char end[];
! 138: int l, machine_tag;
! 139:
! 140: freeall();
! 141:
! 142: /*
! 143: * Stash pointer to end of symbol table after the argument
! 144: * strings.
! 145: */
! 146: l = strlen(args) + 1;
! 147: bcopy(&ssym, args + l, sizeof(ssym));
! 148: l += sizeof(ssym);
! 149: bcopy(&esym, args + l, sizeof(esym));
! 150: l += sizeof(esym);
! 151:
! 152: #ifdef __notyet__
! 153: /*
! 154: * Tell the kernel we're an OpenFirmware system.
! 155: */
! 156: machine_tag = POWERPC_MACHINE_OPENFIRMWARE;
! 157: bcopy(&machine_tag, args + l, sizeof(machine_tag));
! 158: l += sizeof(machine_tag);
! 159: #endif
! 160:
! 161: OF_chain((void *)RELOC, end - (char *)RELOC, entry, args, l);
! 162: panic("chain");
! 163: }
! 164:
! 165: /*
! 166: * XXX This limits the maximum size of the (uncompressed) bsd.rd to a
! 167: * little under 11MB.
! 168: */
! 169: #define CLAIM_LIMIT 0x00c00000
! 170:
! 171: char bootline[512];
! 172:
! 173: extern char *kernelfile;
! 174: int
! 175: main()
! 176: {
! 177: int chosen;
! 178: u_long marks[MARK_MAX];
! 179: int fd;
! 180:
! 181:
! 182: /*
! 183: * Get the boot arguments from Openfirmware
! 184: */
! 185: if ((chosen = OF_finddevice("/chosen")) == -1 ||
! 186: OF_getprop(chosen, "bootpath", bootdev, sizeof bootdev) < 0 ||
! 187: OF_getprop(chosen, "bootargs", bootline, sizeof bootline) < 0) {
! 188: printf("Invalid Openfirmware environment\n");
! 189: exit();
! 190: }
! 191: prom2boot(bootdev);
! 192: get_alt_bootdev(bootdev, sizeof(bootdev), bootline, sizeof(bootline));
! 193: if (bootline[0] != '\0')
! 194: kernelfile = bootline;
! 195:
! 196: OF_claim((void *)0x00100000, CLAIM_LIMIT, 0); /* XXX */
! 197: boot(0);
! 198: return 0;
! 199: }
! 200:
! 201: void
! 202: get_alt_bootdev(char *dev, size_t devsz, char *line, size_t linesz)
! 203: {
! 204: char *p;
! 205: int len;
! 206: /*
! 207: * if the kernel image specified contains a ':' it is
! 208: * [device]:[kernel], so seperate the two fields.
! 209: */
! 210: p = strrchr(line, ':');
! 211: if (p == NULL)
! 212: return;
! 213: /* user specified boot device for kernel */
! 214: len = p - line + 1; /* str len plus nil */
! 215: strlcpy(dev, line, len > devsz ? devsz : len);
! 216:
! 217: strlcpy(line, p+1, linesz); /* rest of string ater ':' */
! 218: }
! 219:
! 220:
! 221: void
! 222: devboot(dev_t dev, char *p)
! 223: {
! 224: strlcpy(p, bootdev, BOOTDEVLEN);
! 225: }
! 226:
! 227: run_loadfile(u_long *marks, int howto)
! 228: {
! 229: char bootline[512]; /* Should check size? */
! 230: u_int32_t entry;
! 231: char *cp;
! 232: void *ssym, *esym;
! 233:
! 234: strlcpy(bootline, opened_name, sizeof bootline);
! 235: cp = bootline + strlen(bootline);
! 236: *cp++ = ' ';
! 237: *cp = '-';
! 238: if (howto & RB_ASKNAME)
! 239: *++cp = 'a';
! 240: if (howto & RB_CONFIG)
! 241: *++cp = 'c';
! 242: if (howto & RB_SINGLE)
! 243: *++cp = 's';
! 244: if (howto & RB_KDB)
! 245: *++cp = 'd';
! 246: if (*cp == '-')
! 247: *--cp = 0;
! 248: else
! 249: *++cp = 0;
! 250:
! 251: entry = marks[MARK_ENTRY];
! 252: ssym = (void *)marks[MARK_SYM];
! 253: esym = (void *)marks[MARK_END];
! 254: {
! 255: u_int32_t lastpage;
! 256: lastpage = roundup(marks[MARK_END], NBPG);
! 257: OF_release((void*)lastpage, CLAIM_LIMIT - lastpage);
! 258: }
! 259:
! 260: chain((void *)entry, bootline, ssym, esym);
! 261:
! 262: _rtt();
! 263: return 0;
! 264:
! 265: }
! 266:
! 267: int
! 268: cnspeed(dev_t dev, int sp)
! 269: {
! 270: return CONSPEED;
! 271: }
! 272:
! 273: char ttyname_buf[8];
! 274:
! 275: char *
! 276: ttyname(int fd)
! 277: {
! 278: snprintf(ttyname_buf, sizeof ttyname_buf, "ofc0");
! 279:
! 280: }
! 281:
! 282: dev_t
! 283: ttydev(char *name)
! 284: {
! 285: return makedev(0,0);
! 286: }
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