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sun2 kernel is restricted to ~2MB due to bootloader. 

It seems that working kernel should be more smaller.

Strip off most kernel options, and provide by kernel modules.
Also add GENERIC kernel for NFS root instead of FFS.
This commit is contained in:
rin 2020-03-08 06:23:18 +00:00
parent 224c5b72f2
commit 501603fb78
3 changed files with 29 additions and 14 deletions
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4
etc/etc.sun2/Makefile.inc
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@ -1,4 +1,4 @@
# $NetBSD: Makefile.inc,v 1.7 2007/07/24 10:49:28 pavel Exp $
# $NetBSD: Makefile.inc,v 1.8 2020/03/08 06:23:18 rin Exp $
#
# etc.sun2/Makefile.inc -- sun2-specific etc Makefile targets
#
@ -6,7 +6,7 @@
# If you change the list of distributed kernels, don't forget
# to update the release documentation in distrib/notes/common/contents
KERNEL_SETS= GENERIC FOURMEG DISKLESS
KERNEL_SETS= GENERIC FOURMEG DISKLESS NFS
EXTRA_KERNELS= INSTALL

29
sys/arch/sun2/conf/GENERIC
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@ -1,4 +1,4 @@
# $NetBSD: GENERIC,v 1.102 2019/04/26 22:46:04 sevan Exp $
# $NetBSD: GENERIC,v 1.103 2020/03/08 06:23:18 rin Exp $
#
# GENERIC machine description file
#
@ -23,11 +23,16 @@
include "arch/sun2/conf/std.sun2"
options MODULAR # new style module(7) framework
#options MODULAR_DEFAULT_AUTOLOAD
options INSECURE # allow modload(8) in multiuser mode
#options INCLUDE_CONFIG_FILE # embed config file in kernel binary
#ident "GENERIC-$Revision: 1.102 $"
#ident "GENERIC-$Revision: 1.103 $"
makeoptions COPTS="-Os" # optimize for size
makeoptions COPTS="-Os -fno-inline-small-functions"
# bootloader has size limit (~2MB)
# Machines to be supported by this kernel
#options FPU_EMULATE
@ -37,12 +42,12 @@ maxusers 4
# Standard system options
options KTRACE # system call tracing
options SYSVMSG # System V message queues
options SYSVSEM # System V semaphores
options SYSVSHM # System V shared memory
#options SYSVMSG # System V message queues
#options SYSVSEM # System V semaphores
#options SYSVSHM # System V shared memory
#options INSECURE # disable kernel security level
#options USERCONF # userconf(4) support
#options PIPE_SOCKETPAIR # smaller, but slower pipe(2)
options PIPE_SOCKETPAIR # smaller, but slower pipe(2)
#options SYSCTL_INCLUDE_DESCR # Include sysctl descriptions in kernel
# Alternate buffer queue strategies for better responsiveness under high
@ -73,15 +78,15 @@ include "conf/compat_netbsd16.config"
# Filesystem options
file-system FFS # Berkeley Fast Filesystem
file-system NFS # Sun NFS client support
file-system CD9660 # ISO 9660 + Rock Ridge file system
#file-system NFS # Sun NFS client support
#file-system CD9660 # ISO 9660 + Rock Ridge file system
#file-system FDESC # /dev/fd/*
file-system KERNFS # /kern
file-system NULLFS # loopback file system
#file-system KERNFS # /kern
#file-system NULLFS # loopback file system
#file-system OVERLAY # overlay file system
#file-system PROCFS # /proc
#file-system UNION # union file system
file-system MFS # memory-based filesystem
#file-system MFS # memory-based filesystem
file-system PTYFS # /dev/pts/N support
#file-system TMPFS # Efficient memory file-system
#file-system UDF # experimental - OSTA UDF CD/DVD file-system

10
sys/arch/sun2/conf/NFS Normal file
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@ -0,0 +1,10 @@
# $NetBSD: NFS,v 1.1 2020/03/08 06:23:18 rin Exp $
#
# GENERIC machine description file for NFS root instead of FFS
# Supports Sun2 (2/120, 2/170, 2/50, ...)
# Supports root on: ie0, sd*, ...
include "arch/sun2/conf/GENERIC"
no file-system FFS
file-system NFS