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/* $OpenBSD: boot.c,v 1.13 2005/12/24 01:05:17 kettenis Exp $ */
/* $NetBSD: boot.c,v 1.1 1997/04/16 20:29:17 thorpej Exp $ */
/*
* Copyright (c) 1997 Jason R. Thorpe. All rights reserved.
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* All rights reserved.
*
* ELF support derived from NetBSD/alpha's boot loader, written
* by Christopher G. Demetriou.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* First try for the boot code
*
* Input syntax is:
* [promdev[{:|,}partition]]/[filename] [flags]
*/
#define ELFSIZE 32 /* We use 32-bit ELF. */
#include <sys/param.h>
#include <sys/exec.h>
#include <sys/exec_elf.h>
#include <sys/reboot.h>
#include <sys/disklabel.h>
#include <lib/libkern/libkern.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/loadfile.h>
#include <machine/cpu.h>
#include <macppc/stand/ofdev.h>
#include <macppc/stand/openfirm.h>
char bootdev[128];
char bootfile[128];
int boothowto;
int debug;
static void
prom2boot(char *dev)
{
char *cp, *lp = 0;
for (cp = dev; *cp; cp++)
if (*cp == ':')
lp = cp;
if (!lp)
lp = cp;
*lp = 0;
}
static void
parseargs(char *str, int *howtop)
{
char *cp;
/* Allow user to drop back to the PROM. */
if (strcmp(str, "exit") == 0)
_rtt();
*howtop = 0;
if (str[0] == '\0')
return;
cp = str;
while (*cp != 0) {
/* check for - */
if (*cp == '-')
break; /* start of options found */
while (*cp != 0 && *cp != ' ')
cp++; /* character in the middle of the name, skip */
while (*cp == ' ')
*cp++ = 0;
}
if (!*cp)
return;
*cp++ = 0;
while (*cp) {
switch (*cp++) {
case 'a':
*howtop |= RB_ASKNAME;
break;
case 'c':
*howtop |= RB_CONFIG;
break;
case 's':
*howtop |= RB_SINGLE;
break;
case 'd':
*howtop |= RB_KDB;
debug = 1;
break;
}
}
}
static void
chain(void (*entry)(), char *args, void *ssym, void *esym)
{
extern char end[];
int l, machine_tag;
freeall();
/*
* Stash pointer to end of symbol table after the argument
* strings.
*/
l = strlen(args) + 1;
bcopy(&ssym, args + l, sizeof(ssym));
l += sizeof(ssym);
bcopy(&esym, args + l, sizeof(esym));
l += sizeof(esym);
#ifdef __notyet__
/*
* Tell the kernel we're an OpenFirmware system.
*/
machine_tag = POWERPC_MACHINE_OPENFIRMWARE;
bcopy(&machine_tag, args + l, sizeof(machine_tag));
l += sizeof(machine_tag);
#endif
OF_chain((void *)RELOC, end - (char *)RELOC, entry, args, l);
panic("chain");
}
/*
* XXX This limits the maximum size of the (uncompressed) bsd.rd to a
* little under 11MB.
*/
#define CLAIM_LIMIT 0x00c00000
int
main()
{
int chosen;
char bootline[512]; /* Should check size? */
char *cp;
u_long marks[MARK_MAX];
u_int32_t entry;
void *ssym, *esym;
int fd;
printf("\n>> OpenBSD/macppc Boot\n");
/*
* Get the boot arguments from Openfirmware
*/
if ((chosen = OF_finddevice("/chosen")) == -1 ||
OF_getprop(chosen, "bootpath", bootdev, sizeof bootdev) < 0 ||
OF_getprop(chosen, "bootargs", bootline, sizeof bootline) < 0) {
printf("Invalid Openfirmware environment\n");
exit();
}
prom2boot(bootdev);
parseargs(bootline, &boothowto);
for (;;) {
if (boothowto & RB_ASKNAME) {
printf("Boot (or \"exit\"): ");
gets(bootline);
parseargs(bootline, &boothowto);
}
OF_claim((void *)0x00100000, CLAIM_LIMIT, 0); /* XXX */
marks[MARK_START] = 0;
if (loadfile(bootline, marks, LOAD_ALL) >= 0)
break;
if (errno)
printf("open %s: %s\n", opened_name, strerror(errno));
boothowto |= RB_ASKNAME;
}
#ifdef __notyet__
OF_setprop(chosen, "bootpath", opened_name, strlen(opened_name) + 1);
cp = bootline;
#else
strlcpy(bootline, opened_name, sizeof bootline);
cp = bootline + strlen(bootline);
*cp++ = ' ';
#endif
*cp = '-';
if (boothowto & RB_ASKNAME)
*++cp = 'a';
if (boothowto & RB_CONFIG)
*++cp = 'c';
if (boothowto & RB_SINGLE)
*++cp = 's';
if (boothowto & RB_KDB)
*++cp = 'd';
if (*cp == '-')
#ifdef __notyet__
*cp = 0;
#else
*--cp = 0;
#endif
else
*++cp = 0;
#ifdef __notyet__
OF_setprop(chosen, "bootargs", bootline, strlen(bootline) + 1);
#endif
entry = marks[MARK_ENTRY];
ssym = (void *)marks[MARK_SYM];
esym = (void *)marks[MARK_END];
{
u_int32_t lastpage;
lastpage = roundup(marks[MARK_END], NBPG);
OF_release((void*)lastpage, CLAIM_LIMIT - lastpage);
}
chain((void *)entry, bootline, ssym, esym);
_rtt();
return 0;
}
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