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If only a device name is specified with no kernel name, try to load a

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kernel from a default list of names.  This list is netbsd, netbsd.bak,
netbsd.old, onetbsd and gennetbsd - all without and with a .gz
extension.
This commit is contained in:
simonb 1999-04-12 05:19:25 +00:00
parent ab3de4de0e
commit 71c3fc3251
1 changed files with 94 additions and 16 deletions
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110
sys/arch/pmax/stand/boot/boot.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: boot.c,v 1.5 1999/04/11 04:25:47 simonb Exp $ */
/* $NetBSD: boot.c,v 1.6 1999/04/12 05:19:25 simonb Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
@ -91,27 +91,46 @@
extern char bootprog_name[], bootprog_rev[], bootprog_date[], bootprog_maker[];
char *kernelnames[] = {
"netbsd", "netbsd.gz",
"netbsd.bak", "netbsd.bak.gz",
"netbsd.old", "netbsd.old.gz",
"onetbsd", "onetbsd.gz",
"gennetbsd", "gennetbsd.gz",
#ifdef notyet
"netbsd.el", "netbsd.el.gz",
#endif /*notyet*/
NULL
};
static int devonly __P((char *));
int main __P((int, char **));
/*
* This gets arguments from the PROM, calls other routines to open
* and load the program to boot, and then transfers execution to that
* new program.
* Argv[0] should be something like "rz(0,0,0)vmunix" on a DECstation 3100.
* Argv[0,1] should be something like "boot 5/rz0/vmunix" on a DECstation 5000.
* The argument "-a" means vmunix should do an automatic reboot.
* This gets arguments from the first stage boot lader, calls PROM routines
* to open and load the program to boot, and then transfers execution to
* that new program.
*
* Argv[0] should be something like "rz(0,0,0)netbsd" on a DECstation 3100.
* Argv[0,1] should be something like "boot 5/rz0/netbsd" on a DECstation 5000.
* The argument "-a" means netbsd should do an automatic reboot.
*/
int
main(argc, argv)
int argc;
char **argv;
{
char *cp;
int entry;
char *name, **namep, *dev;
char bootname[PATH_MAX], bootpath[PATH_MAX];
int entry, win;
u_long marks[MARK_MAX];
struct btinfo_symtab bi_syms;
struct btinfo_bootpath bi_bpath;
printf(">> %s, Revision %s\n", bootprog_name, bootprog_rev);
printf(">> (%s, %s)\n", bootprog_maker, bootprog_date);
/* initialise bootinfo structure early */
bi_init(BOOTINFO_ADDR);
@ -120,18 +139,38 @@ main(argc, argv)
argc--;
argv++;
}
cp = *argv;
printf(">> %s, Revision %s\n", bootprog_name, bootprog_rev);
printf(">> (%s, %s)\n", bootprog_maker, bootprog_date);
name = argv[0];
printf("Boot: %s\n", name);
printf("Boot: %s\n", cp);
strncpy(bi_bpath.bootpath, cp, BTINFO_BOOTPATH_LEN);
bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath));
/* NOTE: devonly() can modify name[]. */
strcpy(bootname, argv[0]);
if (devonly(bootname)) {
dev = bootname;
name = NULL;
}
marks[MARK_START] = 0;
if (loadfile(cp, marks, LOAD_ALL) == -1)
if (name != NULL)
win = (loadfile(name, marks, LOAD_ALL) != -1);
else {
win = 0;
for (namep = kernelnames, win = 0; *namep != NULL && !win;
namep++) {
name = *namep;
strcpy(bootpath, dev);
strcat(bootpath, name);
printf("Loading: %s\n", bootpath);
win = (loadfile(bootpath, marks, LOAD_ALL) != -1);
if (win)
name = bootpath;
}
}
if (!win)
goto fail;
strncpy(bi_bpath.bootpath, name, BTINFO_BOOTPATH_LEN);
bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath));
entry = marks[MARK_ENTRY];
bi_syms.nsym = marks[MARK_NSYM];
bi_syms.ssym = marks[MARK_SYM];
@ -145,8 +184,47 @@ main(argc, argv)
else
startprog(entry, entry, argc, argv, DEC_PROM_MAGIC,
callv, BOOTINFO_MAGIC, BOOTINFO_ADDR);
(void)printf("KERNEL RETURNED!\n");
fail:
(void)printf("Boot failed! Halting...\n");
return (0);
}
/*
* Check whether or not fname is a device name only or a full
* bootpath including the kernel name. This code to do this
* is copied from loadfile() in the first stage bootblocks.
*
* NOTE: fname will be modified if it's of the form N/rzY
* without a trailing slash.
*/
static
int
devonly(fname)
char *fname;
{
char c;
while ((c = *fname++) != '\0') {
if (c == ')')
break;
if (c != '/')
continue;
while ((c = *fname++) != '\0')
if (c == '/')
break;
/*
* Make "N/rzY" with no trailing '/' valid by adding
* the extra '/' before appending 'boot' to the path.
*/
if (c != '/') {
fname--;
*fname++ = '/';
*fname = '\0';
}
break;
}
return (*fname == '\0');
}