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MFP4 change 210763

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Allow boothowto and bootverbose to be set via kernel options, which
is useful on architectures that are unable to rely on a boot loader
to pass configuration variables to the kernel.

Submitted by:	rwatson
This commit is contained in:
Brooks Davis 2013-04-03 22:24:36 +00:00
parent 8e3ff376cf
commit 56fddc5d8c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=249071
3 changed files with 17 additions and 2 deletions
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6
sys/conf/NOTES
View File

@ -139,6 +139,12 @@ options MAXPHYS=(128*1024)
#
options INCLUDE_CONFIG_FILE # Include this file in kernel
#
# Compile-time defaults for various boot parameters
#
options BOOTVERBOSE=1
options BOOTHOWTO=RB_MULTIPLE
options GEOM_AES # Don't use, use GEOM_BDE
options GEOM_BDE # Disk encryption.
options GEOM_BSD # BSD disklabels

2
sys/conf/options
View File

@ -68,6 +68,8 @@ TEXTDUMP_VERBOSE opt_ddb.h
ADAPTIVE_LOCKMGRS
ALQ
AUDIT opt_global.h
BOOTHOWTO opt_global.h
BOOTVERBOSE opt_global.h
CALLOUT_PROFILING
CAPABILITIES opt_capsicum.h
CAPABILITY_MODE opt_capsicum.h

11
sys/kern/init_main.c
View File

@ -101,10 +101,17 @@ struct thread thread0 __aligned(16);
struct vmspace vmspace0;
struct proc *initproc;
int boothowto = 0; /* initialized so that it can be patched */
#ifndef BOOTHOWTO
#define BOOTHOWTO 0
#endif
int boothowto = BOOTHOWTO; /* initialized so that it can be patched */
SYSCTL_INT(_debug, OID_AUTO, boothowto, CTLFLAG_RD, &boothowto, 0,
"Boot control flags, passed from loader");
int bootverbose;
#ifndef BOOTVERBOSE
#define BOOTVERBOSE 0
#endif
int bootverbose = BOOTVERBOSE;
SYSCTL_INT(_debug, OID_AUTO, bootverbose, CTLFLAG_RW, &bootverbose, 0,
"Control the output of verbose kernel messages");