shithub: riscv

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boot: allow alternative proto files per kernel and kernel config for bootfs.paq

bootmkfile will now looks for the following proto files in order
and pick the first one it finds to build the bootfs.paq file:

1)	$CONF.boofs.proto		(config specific)
2)	bootfs.proto			(kernel specific)
3)	$BOOTDIR/bootfs.proto	(default generic)

--- a/sys/src/9/boot/bootmkfile

+++ b/sys/src/9/boot/bootmkfile

@@ -13,7 +13,12 @@

 boot:	$BOOTFILES

 	$LD -o $target $BOOTFILES

-BOOTFSPROTO=$BOOTDIR/bootfs.proto

+# look for proto file in order:

+#	1) $CONF.bootfs.proto		(config specific)

+#	2) bootfs.proto			(kernel specific)

+#	3) $BOOTDIR/bootfs.proto	(default generic)

+#

+BOOTFSPROTO=`{for(i in $CONF.bootfs.proto bootfs.proto $BOOTDIR/bootfs.proto) test -r $i && echo $i && exit}

 bootfs.paq:	$BOOTFSPROTO `{disk/mkfs -aos / $BOOTFSPROTO >[2]/dev/null}

 	mkdir -p bootfs

--- a/sys/src/9/boot/bootrc

+++ b/sys/src/9/boot/bootrc

@@ -180,8 +180,12 @@

 if(~ $#usbwait 0)

 	sleep 2

-. /rc/lib/net.rc

-. /rc/lib/local.rc

+# load boot methods

+fn showlocaldevs {}

+fn configlocal {}

+for(i in /rc/lib/*.rc){

+	. $i

+}

 # add partitions and binds

 configlocal