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#!/bin/rc
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# desc: create a boot floppy or configure hard disk to boot plan 9
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# prereq: copydist
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switch($1) {
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case go
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echo
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echo 'Initializing Plan 9 FAT configuration partition (9fat)'
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echo
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fat=(/dev/sd*/9fat)
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fat=$fat(1)
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disk=`{echo $fat | sed 's:/dev/::;s:/9fat::'}
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bootfs=`{echo $fs | sed 's:/dev/(sd..)/(.*):\1!\2:'}
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bootfat=`{echo $fs | sed 's:/dev/(sd..)/(.*):\1!9fat:'}
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if(! test -f /dev/$disk/9fat) {
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echo 'You have no 9fat partition. Can''t setup booting.'
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exit
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}
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if(! test -f /tmp/plan9.ini) {
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{
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sfs=`{echo $fs | sed 's;/dev;#S;'}
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if(~ $fstype fossil fossil+venti){
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echo bootfile'='$bootfat!9pcf
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echo 'bootargs=local!'^$sfs
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echo 'bootdisk=local!'^$sfs
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}
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if not {
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echo bootfile'='$bootfs!/386/9pcdisk
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echo 'bootdisk=local!'^$sfs
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}
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if(~ $fstype fossil+venti){
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venti=`{echo $ventiarena | sed 's;/dev;#S;'}
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echo venti'='^$venti
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}
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# sort -u avoids dups which could otherwise trigger
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# pointless boot menus.
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grep -v '(^\[)|menuitem|adisk|bootfile|bootdisk|bootargs|nobootprompt|mouseport|vgasize|monitor|cdboot' /tmp/plan9.orig |
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sort -u
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echo 'mouseport='^$mouseport
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echo 'monitor='^$monitor
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echo 'vgasize='^$vgasize
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} >/tmp/plan9.ini
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}
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if(! test -f /tmp/plan9ini.bak)
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cp /tmp/plan9.ini /tmp/plan9ini.bak
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need9fatformat=no
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if(! isfat /dev/$disk/9fat)
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need9fatformat=yes
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if not if(! mount -c /srv/dos /n/9fat /dev/$disk/9fat >[2]/dev/null)
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need9fatformat=yes
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if not if(! test -f /n/9fat/plan9.ini)
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need9fatformat=yes
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if (test -e /n/newfs/386/9loadnousb)
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bind /n/newfs/386/9loadnousb /n/newfs/386/9load # cater to old bioses
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if(~ $need9fatformat yes){
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log Initializing Plan 9 FAT partition.
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disk/format -r 2 -d -b /386/pbs \
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/dev/$disk/9fat /n/newfs/386/9load
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# silently install pbslba if the partition is way into the disk.
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# it''s our only hope. only need this for >8.5GB into the disk.
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# but...
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# there are so few non-LBA bioses out
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# there anymore that we'll do this even if we're only 2GB into
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# the disk. it's just not worth the headaches of dealing with
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# crappy bioses that don't address the whole 8.5GB properly
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9fatoffset=`{grep '^part 9fat ' /dev/$disk/ctl | awk '{print $4}'}
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if(! ~ $#9fatoffset 1) {
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echo 'could not find plan 9 partition.'
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echo 'cannot happen'
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exit bad
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}
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if(test $9fatoffset -gt 2097152) # 2GB
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disk/format -b /386/pbslba /dev/$disk/9fat
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mount -c /srv/dos /n/9fat /dev/$disk/9fat
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}
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if(! test -f /n/9fat/4e){
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logprog cp /n/newfs/386/9load /n/9fat/9load
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logprog cp /n/newfs/386/9pcf /n/9fat/9pcf
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if(test -f /n/9fat/plan9.ini && ! test -f /n/9fat/plan9-3e.ini)
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logprog mv /n/9fat/plan9.ini /n/9fat/plan9-3e.ini
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if(test -f /n/9fat/9pcdisk && ! test -f /n/9fat/9pc3e)
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logprog mv /n/9fat/9pcdisk /n/9fat/9pc3e
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awk -f /bin/inst/mkini.awk >/n/9fat/plan9.ini
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>/n/9fat/4e
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}
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echo
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echo 'There are myriad ways to boot a Plan 9 system.'
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echo 'You can use any of the following.'
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echo
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echo ' floppy - create a boot floppy'
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echo ' plan9 - make the plan 9 disk partition the default for booting'
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echo ' win9x - add a plan 9 option to windows 9x boot menu'
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echo ' winnt - add a plan 9 option to windows nt/2000/xp boot manager'
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echo
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echo 'If you are upgrading an extant third edition installation and booting'
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echo 'from something other than a floppy, you needn''t run anything here.'
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echo 'Just type ctl-d.'
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oldbootsetup=$didbootsetup
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didbootsetup=1
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export didbootsetup
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prompt 'Enable boot method' floppy plan9 win9x winnt
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if(! boot$rd){
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didbootsetup=$oldbootsetup
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export didbootsetup
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}
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case checkdone
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xxxfat=(/dev/sd*/9fat)
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if(! isfat $xxxfat(1) || ! ~ $didbootsetup 1){
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bootsetup=ready
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export bootsetup
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}
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}
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