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Parse out flags passed to the kernel on boot; from Scott Taylor, tweaked to 

use the MI boot_flags.h interface by me.
This commit is contained in:
rafal 2003-01-19 22:36:00 +00:00
parent 2eef5c9ba8
commit 48eb4573c0
1 changed files with 39 additions and 3 deletions
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42
sys/arch/sgimips/sgimips/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.50 2003/01/18 06:30:24 thorpej Exp $ */
/* $NetBSD: machdep.c,v 1.51 2003/01/19 22:36:00 rafal Exp $ */
/*
* Copyright (c) 2000 Soren S. Jorvang
@ -57,6 +57,7 @@
#include <sys/sa.h>
#include <sys/syscallargs.h>
#include <sys/kcore.h>
#include <sys/boot_flag.h>
#include <uvm/uvm_extern.h>
@ -203,7 +204,7 @@ mach_init(argc, argv, magic, btinfo)
caddr_t ssym;
vaddr_t kernend;
int kernstartpfn, kernendpfn;
int i, nsym;
int i, rv, nsym;
#if 0
/* Clear the BSS segment. XXX Is this really necessary? */
@ -289,6 +290,42 @@ mach_init(argc, argv, magic, btinfo)
makebootdev(argv[i] + 16);
}
/*
* Pass the args again to check for flags -- This is done
* AFTER checking for OSLoadOptions to ensure that "auto"
* does not override the "-s" flag.
*/
for (i = 0; i < argc; i++) {
/*
* Extract out any flags passed for the kernel in the
* argument string. Warn for unknown/invalid flags,
* but silently skip non-flag arguments, as they are
* likely PROM environment values (if I knew those
* would always precede *any* flags, then I'd say we
* should warn about *all* unexpected values, but for
* now this should be fine).
*
* Use the MI boot-flag extractor since we don't use
* any special MD flags and to make sure we're up-to
* date with new MI flags whenever they're added.
*/
if (argv[i][0] == '-') {
rv = 0;
BOOT_FLAG(argv[i][1], rv);
if (rv == 0) {
printf("Unexpected option '%s' ignored", argv[i]);
} else {
boothowto |= rv;
}
}
}
#ifdef DEBUG
boothowto |= AB_DEBUG;
#endif
/*
* When the kernel is loaded directly by the firmware, and
* no explicit OSLoadPartition is set, we fall back on
@ -353,7 +390,6 @@ mach_init(argc, argv, magic, btinfo)
case MACH_SGI_IP32:
#ifdef IP32
boothowto |= AB_DEBUG; /* XXXrkb */
ip32_init();
#else
unconfigured_system_type(mach_type);