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- This message announces the availability of version 0.08 of Linux/68k.
-
- It can be ftped from directory /pub/linux/680x0 at tsx-11.mit.edu.
-
- A precompiled kernel executable and the Amiga "bootstrap" program can
- be found in kern-0.08.tar.gz in the "kernel" subdirectory.
-
- The kernel source can be found in linux-0.08.tar.gz in the "src"
- subdirectory. Patches against 0.07pl4 can be found in
- linux-0.08.diffs.gz in the "src" subdirectory.
-
- A new, 1024K ramdisk filesystem image has been put in the "filesys"
- subdirectory in the "new-filesys.gz" file. This ramdisk filesystem is
- an "ext2" filesystem containing new shared libraries and a slew of
- programs which are necessary to build/rebuild hard disk filesystems.
- You can replace the libraries on your hard disk partitions with the
- new versions on the ramdisk image. You can also replace some of your
- statically linked executables with executables from the ramdisk image
- (see below (#)).
-
- There is a bug in binutils-1.9l.1 when linking dynamically. If the
- program you are linking overrides a shared library function, then the
- program will get a SIGSEGV when it tries to execute that function.
- I've put a patch to binutils-1.9l.1 in "ld.diffs.shlib" in the "tools"
- subdirectory. I'll be distributing a new "usr.tar.gz" archive later
- which will contain the new "ld", and will get rid of the statically
- linked executables found in /usr/bin, replacing them with dynamically
- linked executables.
-
- The changes in this release against 0.07pl4 include:
-
- *) A change in the way that the return value from system calls are
- returned to user programs. Unfortunately, this breaks the existing
- 4.5.19 shared library and any existing statically linked
- applications. This change was unavoidable. The "new-filesys.gz"
- file in the "filesys" directory contains the new shared libraries
- and dynamically linked executables (#).
-
- *) A number of bug fixes.
-
- *) Changes from Martin Apel which allow use of the copyback cache on
- 68040 processors. Martin says that he thinks that there may be
- problems with dynamically linked executables/shared libraries with
- the copyback cache.
-
- *) The swapping mechanism has been ported. You should be able to use
- swap partitions and swap files using "swapon" now (note that the
- kernel prints out some debugging messages whenever a page is
- swapped in or out; these will eventually be removed).
-
- *) Unix domain socket support has been added.
-
- *) The Amiga bootstrap has been changed so that it does not need to be
- loaded into CHIP RAM anymore. This means that we don't require
- the "BLINK" program when building it.
-
- *) Amiga CHIP RAM now has an allocator. Existing users of chipram
- have been changed to use this new allocator.
-
- *) Amiga keyboard driver has auto-repeat now.
-
- *) Includes a driver for the Amiga 4000 (not A1200) IDE hard disk
- controller. Thanks to Torsten Ebeling, Michael Rausch and Geert
- Uytterhoeven for separately implementing *3* IDE drivers. It was
- hard to decide which one to include. I ended up including the one
- from Torsten since it seemed to fit best into the current source.
- I'm hoping that Michael and Geert will send in improvements if they
- have any to make.
-
- *) Amiga Mouse driver from Michael Rausch. Nothing uses this yet.
-
- *) Amiga Parallel Port printer driver from Michael Rausch.
-
- *) VTxxx Terminal Emulation on the console from Arno Griffioen.
-
- *) Bug fixes to the Amiga Fast File System code to allow it to work on
- partitions consisting of an odd number of sectors.
-
- *) Patches from Geert Uytterhoeven to the Amiga Fast File System code
- to allow it to work with the Amiga MultiUser filesystem
-
- *) Support for core files.
-
- *) The "ext2" filesystem has been ported to Linux/68k. I'm not
- certain of the correctness of this port on largish (>10)
- filesystems yet. Use at your own risk.
-
- *) The "proc" filesystem has been ported to Linux/68k.
-
- *) The "ptrace" support has been ported to Linux/68k. This allows
- the use of "gdb" to source-level debug programs (this has been
- very useful to me already in tracking down various bugs).
-
- This release still contains only support for the Amiga. Hopefully the
- people working on MacIntosh and Atari support will have some sources
- for inclusion soon.
-
- To boot the kernel on an Amiga, use the supplied "bootstrap" command.
-
- To boot with the ram disk image, uncompress the image and type:
-
- bootstrap -r new-filesys ro
-
- The "ro" option tells the kernel to mount the ramdisk as read-only.
- The "/etc/rc" file on the ramdisk image will "check" the ramdisk image
- and remount the root (ramdisk) filesystem read/write. The ramdisk
- image contains an "/sbin/shutdown" script which will unmount all
- filesystems, mount the ramdisk read-only, sync all dirty buffers, and
- then print a message indicating that it is safe to reboot.
-
- You can boot from an existing Linux hard disk partition by supplying
- the device name to the bootstrap program:
-
- bootstrap root=/dev/[sh]d[a-f][1-16]
-
- You may want to provide the "ro" option to mount the partition
- read-only.
-
- The major number for SCSI disks is "0x08", and the minor number
- depends on the disk and partition. linux/68k searches for SCSI disks
- from target 0 to target 7, and for Logical Units 0 through 7 on each
- target. The minor number can be calculated by (disk_number)*16 +
- partition_number. The first disk found is disk 0. Partition 0 is the
- whole disk. Partition 1 is the first partition found in the
- RigidDiskBlock partition table on the Amiga hard disk. Thus 0x0801 is
- the first partition on the first disk found. 0x0812 is the second
- partition on the second hard disk found.
-
- For example, I have two SCSI hard disks. The first is at target 5,
- LUN 0 and the second at target 6, LUN 0. The first has three
- partitions (used for Linux) and the second has 4 partitions used for
- AmigaDOS.
-
- Thus I have:
-
- devnum linux device name
- ------ ------------------------------------
- 0x0800 sda (the entire disk at target 5 : BE CAREFUL)
- 0x0801 sda1 (1st partition on disk at target 5)
- 0x0802 sda2 (2nd partition on disk at target 5)
- 0x0803 sda3 (3rd partition on disk at target 5)
- 0x0810 sdb (the entire disk at target 6 : BE CAREFUL)
- 0x0811 sdb1 (1st partition on disk at target 6)
- 0x0812 sdb2 (2nd partition on disk at target 6)
- 0x0813 sdb3 (3rd partition on disk at target 6)
- 0x0814 sdb4 (4th partition on disk at target 6)
-
- *NOTE* The target numbers above are examples; these are what I get on
- my system, since the first disk is at target 5 and the second at
- target 6. If your first disk is at target 0, your sda will *still* be
- 0x0800 (/dev/sda).
-
- My Linux root partition is on the 1st partition of my first drive, so
- I boot with:
-
- bootstrap root=/dev/sda1
-
- After booting from one of the above methods, if the kernel supports
- your SCSI driver, you should be able to create a minix file system on
- one of your hard disk partitions if you wish.
-
- Determine the size of your partition in 1K blocks (take the number of
- 512 byte sectors from HDToolBox and divide by two), and determine
- which special file to use in /dev (see above). *DOUBLE CHECK* that
- the major/minor numbers for the special device (ls -l /dev/xxx) are
- correct. If they are incorrect or the device special file doesn't
- exist, use mknod to change or create the device special file. Then
- execute:
-
- /sbin/mkfs.minix /dev/xxxx size
-
- This will create a minix file system on the hard disk partition. You
- can then mount this partition under /mnt and copy files to it:
-
- mount /dev/xxxx /mnt
-
- When finished copying, unmount the partition:
-
- umount /mnt
-
- sync a few times, run "/sbin/shutdown" and then reboot. You can then
- boot the kernel by providing "bootstrap" with the device name to boot
- from.
-
- Again, you do any mucking around with hard disks at your OWN RISK.
-
- Note that the above can be used on IDE hard disks now also, except
- that the major/minor numbers for IDE hard disks are different, and the
- special devices in /dev are named hd[ab][1-64].
-