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Use boot arguments to try to determine the boot device. The OSLoadPartition

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string, if present, will override the second argument (which may be the
path/kernel being loaded).  This will provide a way to netboot the kernel
and allow the root device be set to a disk partition.
This commit is contained in:
mhitch 2001-10-18 02:36:33 +00:00
parent 6d6ab09e29
commit b216e63487
1 changed files with 21 additions and 1 deletions
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22
sys/arch/sgimips/sgimips/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.27 2001/09/24 03:56:03 mhitch Exp $ */ /* $NetBSD: machdep.c,v 1.28 2001/10/18 02:36:33 mhitch Exp $ */
/* /*
* Copyright (c) 2000 Soren S. Jorvang * Copyright (c) 2000 Soren S. Jorvang
@ -237,12 +237,32 @@ mach_init(argc, argv, envp)
uvm_setpagesize(); uvm_setpagesize();
/*
* argv[0] can be either the bootloader loaded by the PROM, or a
* kernel loaded directly by the PROM.
*
* If argv[0] is the bootloader, then argv[1] might be the kernel
* that was loaded. How to tell which one to use?
*
* If argv[1] isn't an environment string, try to use it to set the
* boot device.
*/
if (strchr(argv[1], '=') != 0)
makebootdev(argv[1]);
boothowto = RB_SINGLE; boothowto = RB_SINGLE;
for (i = 0; i < argc; i++) { for (i = 0; i < argc; i++) {
if (strcmp(argv[i], "OSLoadOptions=auto") == 0) { if (strcmp(argv[i], "OSLoadOptions=auto") == 0) {
boothowto &= ~RB_SINGLE; boothowto &= ~RB_SINGLE;
} }
/*
* If this is OSLoadPartition, use it to set the boot device.
* XXX This probably should not be done if we used a path
* XXX from argv[1], but how to tell?
*/
if (strncmp(argv[i], "OSLoadPartition=", 16) == 0)
makebootdev(argv[i] + 16);
#if 0 #if 0
printf("argv[%d]: %s\n", i, argv[i]); printf("argv[%d]: %s\n", i, argv[i]);
/* delay(20000); */ /* give the user a little time.. */ /* delay(20000); */ /* give the user a little time.. */