From: Dirk Vogt <dirk@minix3.org>
Date: Tue, 1 May 2012 14:46:53 +0000 (+0200)
Subject: Add ext2 ramdisk, intended for cross compilation
X-Git-Tag: v3.2.1~527
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/Bv9ARM.ch09.html?a=commitdiff_plain;h=bfacef76c5fec8dcddc731c7604370521897b60f;p=minix.git

Add ext2 ramdisk, intended for cross compilation
---

diff --git a/drivers/ext2_ramdisk/Makefile b/drivers/ext2_ramdisk/Makefile
new file mode 100644
index 000000000..34c381511
--- /dev/null
+++ b/drivers/ext2_ramdisk/Makefile
@@ -0,0 +1,68 @@
+# Makefile for ramdisk image
+
+.include <bsd.own.mk>
+
+BINFILES = dev2name mount  sh service \
+           sysenv
+
+SBINFILES = ahci at_wini bios_wini ext2 floppy mfs procfs \
+            fsck.mfs
+
+ETCFILES  = system.conf mtab passwd pwd.db spwd.db master.passwd \
+            rs.single
+
+USRBINFILES  = newroot loadramdisk cdprobe
+USRSBINFILES  = acpi pci
+IMAGE_DIRS= bin sbin etc usr/bin usr/sbin
+
+install:
+all:
+
+# as we are taking the binaries directly out of the destree
+# we have to make sure they are already installed
+# (that's a little bit to coarse grain though...)
+install_files:
+	${MAKE} -C ${MINIXSRCDIR}/commands install
+	${MAKE} -C ${MINIXSRCDIR}/usr.bin install
+	${MAKE} -C ${MINIXSRCDIR}/usr.sbin install
+	${MAKE} -C ${MINIXSRCDIR}/usr.bin install
+	${MAKE} -C ${MINIXSRCDIR}/sbin install
+	${MAKE} -C ${MINIXSRCDIR}/bin install
+	${MAKE} -C ${MINIXSRCDIR}/servers install
+	${MAKE} -C ${MINIXSRCDIR}/drivers/acpi install
+	${MAKE} -C ${MINIXSRCDIR}/drivers/ahci install
+	${MAKE} -C ${MINIXSRCDIR}/drivers/at_wini install
+	${MAKE} -C ${MINIXSRCDIR}/drivers/bios_wini install
+	${MAKE} -C ${MINIXSRCDIR}/drivers/floppy install
+	${MAKE} -C ${MINIXSRCDIR}/drivers/pci install
+
+
+image.d: install_files
+	@echo -n "preparing image... "
+	rm -rf image.d
+	@mkdir image.d
+	@for f in $(IMAGE_DIRS); do mkdir -p image.d/$$f;  done
+	@for f in $(BINFILES); do  cp $(DESTDIR)/bin/$$f image.d/bin;  done
+	@for f in $(SBINFILES); do  cp $(DESTDIR)/sbin/$$f image.d/sbin;  done
+	@for f in $(ETCFILES); do  cp $(DESTDIR)/etc/$$f image.d/etc;  done
+	@for f in $(USRBINFILES); do  cp $(DESTDIR)/usr/bin/$$f image.d/usr/bin;  done
+	@for f in $(USRSBINFILES); do  cp $(DESTDIR)/usr/sbin/$$f image.d/usr/sbin;  done
+	@cp rc $(DESTDIR)/etc;
+	if [ ! -z ${EXT2_EXTRA_TREE} ] ; \
+	then \
+		echo "Copying additional files";\
+		cp -a ${EXT2_EXTRA_TREE}/* image.d/; \
+	fi
+	@echo "done"
+
+image:: image.d
+	@echo -n "generating image... "
+	genext2fs -q -N 1000 -D device_table.txt -b 21000 -U -d image.d  $@
+	rm -rf image.d
+	@echo "done."
+
+clean:
+	rm -rf image.d image
+.PHONY:  image
+
+.include <minix.service.mk>
diff --git a/drivers/ext2_ramdisk/device_table.txt b/drivers/ext2_ramdisk/device_table.txt
new file mode 100644
index 000000000..831fde5d7
--- /dev/null
+++ b/drivers/ext2_ramdisk/device_table.txt
@@ -0,0 +1,10 @@
+/dev      d    755  0    0    -    -    -    -    -
+/dev/null c    666  0    0    1    3    0    0    -
+/dev/log  c    666  0    0    4    0    0    0    -
+/dev/console  c    666  0    0    4    0    0    0    -
+/dev/ttyc c    666  0    0    4    1    1    1    4
+/dev/tty  c    666  0    0    5    0    0    0    -
+/dev/tty0 c    666  0    0    4    0    0    1    4
+/dev/imgrd b    666  0    0    1    6    0    0    -
+#/dev/ttyp c    666  0    0    4    128  128  1    16
+
diff --git a/drivers/ext2_ramdisk/mtab b/drivers/ext2_ramdisk/mtab
new file mode 100644
index 000000000..8b92699c0
--- /dev/null
+++ b/drivers/ext2_ramdisk/mtab
@@ -0,0 +1 @@
+/dev/imgrd / 3 rw
diff --git a/drivers/ext2_ramdisk/rc b/drivers/ext2_ramdisk/rc
new file mode 100644
index 000000000..0945cb952
--- /dev/null
+++ b/drivers/ext2_ramdisk/rc
@@ -0,0 +1,77 @@
+#!/bin/sh
+set -e
+
+exec >/dev/log
+exec 2>/dev/log
+exec </dev/null
+
+FSCK=/bin/fsck.mfs
+ACPI=/usr/sbin/acpi
+if [ -e $ACPI -a -n "`sysenv acpi`" ]
+then
+	/bin/service -c up $ACPI
+fi
+/bin/service -c up /usr/sbin/pci
+/bin/service -cn up /sbin/floppy -dev /dev/fd0
+if [ X`/bin/sysenv bios_wini` = Xyes ]
+then
+	echo Using bios_wini.
+	/bin/service -c up /sbin/bios_wini -dev /dev/c0d0
+elif [ X`/bin/sysenv ahci` = Xyes ]
+then
+	# this is here temporarily, for testing purposes
+	/bin/service -c up /sbin/ahci -dev /dev/c0d0 -label ahci_0 -args instance=0
+else
+	/bin/service -c up /sbin/at_wini -dev /dev/c0d0 -label at_wini_0
+	/bin/service -cr up /sbin/at_wini -dev /dev/c1d0 -label at_wini_1 -args instance=1
+fi
+/bin/service -c edit /sbin/mfs -label fs_imgrd
+/bin/service up /sbin/procfs || echo "WARNING: couldn't start procfs"
+
+if /bin/sysenv rootdevname >/dev/null
+then
+	rootdevname=/dev/`/bin/sysenv rootdevname`
+else
+	rootdev=`/bin/sysenv rootdev` || echo 'No rootdev?'
+	rootdevname=`/bin/dev2name "$rootdev"` ||
+		{ echo 'No device name for root device'; exit 1; }
+fi
+
+if [ "`sysenv bin_img`" = 1 ]
+then
+    bin_img="-i "
+fi
+
+if sysenv cdproberoot >/dev/null
+then
+	echo 
+	echo 'Looking for boot CD. This may take a minute.'
+	echo 'Please ignore any error messages.'
+	echo
+	cddev=`/usr/bin/cdprobe` || { echo 'No CD found'; exit 1; }
+	export cddev
+	echo "Loading ramdisk from ${cddev}p1"
+	/usr/bin/loadramdisk "$cddev"p1
+elif [ "$rootdevname" = "/dev/ram" ]
+then
+	if /bin/sysenv rootdevname >/dev/null
+	then
+		ramimagename=/dev/`/bin/sysenv ramimagename`
+	else
+		ramimagedev=`/bin/sysenv ramimagedev` ||
+			{ echo 'ramimagedev not found'; exit 1; }
+		ramimagename=`/bin/dev2name "$ramimagedev"` ||
+			{ echo 'No device name for ramimagedev'; exit 1; }
+	fi
+
+	echo "Loading ramdisk from $ramimagename"
+	/usr/bin/loadramdisk "$ramimagename" || echo "WARNING: loadramdisk failed"
+fi
+echo "Root device name is $rootdevname"
+if [ -e $FSCK ]
+then	$FSCK -p $rootdevname
+fi
+/usr/bin/newroot $bin_img"$rootdevname"
+/bin/mount -e -n -t procfs none /proc || echo "WARNING: couldn't mount procfs"
+
+exec /bin/sh /etc/rc "$@"