From b43f3b6bfc6b131d33e4ab55ddb583b252da1f6f Mon Sep 17 00:00:00 2001
From: Erik van der Kouwe <erik@minix3.org>
Date: Wed, 4 Aug 2010 05:18:03 +0000
Subject: [PATCH] This patch copies the ext2 server onto the initial ramdisk,
 the final patch to allow MINIX to boot from ext2.

To create a setup with MINIX on ext2, follow these steps:

- Assumptions:
  - there exists a primary partition c0dApB with a MINIX installation
    with GRUB support (/boot/image_latest exists on /dev/c0dApB)
  - there exists a free primary partition c0dCpD

- Create an ext2 filesystem on c0dApB (from Linux, until Tthom
  has ported mke2fs)

- Follow these steps (from a MINIX CD with ext2 support, another MINIX
  installation (not c0dApB) or Linux >= 2.6.35):

  mkdir /mnt/mfs /mnt/ext2
  mount /dev/c0dApBs0 /mnt/mfs
  mount /dev/c0dApBs1 /mnt/mfs/home
  mount /dev/c0dApBs2 /mnt/mfs/usr
  mount /dev/c0dCpD /mnt/ext2
  synctree  -f /mnt/mfs /mnt/ext2
  echo root=/dev/c0dCpD > /mnt/ext2/etc/fstab

  (note: no subpartitions used because that would confuse an unmodified
  bootloader)

- Add the new MINIX installation to GRUB according to steps 7&8 in
  http://wiki.minix3.org/en/SummerOfCode2010/MultiBoot/HowTo
---
 drivers/ramdisk/Makefile | 8 +++++++-
 drivers/ramdisk/proto    | 1 +
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/ramdisk/Makefile b/drivers/ramdisk/Makefile
index 4ea835d34..c4d7bd3db 100644
--- a/drivers/ramdisk/Makefile
+++ b/drivers/ramdisk/Makefile
@@ -1,7 +1,7 @@
 # Makefile for ramdisk image
 
 PROGRAMS=at_wini bios_wini cdprobe dev2name floppy loadramdisk mount newroot \
-	pci sh service sysenv mfs
+	pci sh service sysenv mfs ext2
 EXTRA=system.conf passwd rs.single
 
 CPPFLAGS+= -I${MINIXSRCDIR}/servers -I${MINIXSRCDIR}
@@ -103,6 +103,12 @@ mfs: ../../servers/mfs/mfs
 ../../servers/mfs/mfs:
 	$(MAKE) -C ../../servers/mfs
 
+ext2: ../../servers/ext2/ext2
+	install -s ../../servers/ext2/$@ $@
+
+../../servers/ext2/ext2:
+	$(MAKE) -C ../../servers/ext2
+
 system.conf: ../../etc/system.conf
 	install -s ../../etc/$@ $@
 
diff --git a/drivers/ramdisk/proto b/drivers/ramdisk/proto
index cef0f0c68..0e44d1a81 100644
--- a/drivers/ramdisk/proto
+++ b/drivers/ramdisk/proto
@@ -14,6 +14,7 @@ d--755 0 0
 	sbin d--755 0 0
 		at_wini ---755 0 0 at_wini
 		bios_wini ---755 0 0 bios_wini
+		ext2 ---755 0 0 ext2
 		floppy ---755 0 0 floppy
 		pci ---755 0 0 pci
 		mfs ---755 0 0 mfs
-- 
2.44.0