home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Aminet 50
/
Aminet 50 (2002)(GTI - Schatztruhe)[!][Aug 2002].iso
/
Aminet
/
util
/
boot
/
ShellUpdate.lha
/
Documentation
/
LoadModule
< prev
next >
Wrap
Text File
|
2001-12-22
|
11KB
|
289 lines
Short: Install Libs/Devs reset-proof, ROM-Updates replacement
Uploader: thor@math.tu-berlin.de (Thomas Richter)
Author: thor@math.tu-berlin.de (Thomas Richter)
Type: util/boot
Version: 40.7
Requires: OS 3.0, 3.5 or 3.9 recommended, possibly MuProtectModules.lha
_____________________________________________________________________________
Purpose of LoadModule:
LoadModule installs so called "resident modules" in a reset-proof way,
possibly replacing ROM modules by disk-based modules, similar to what
SetPatch and its "ROM-Updates" mechanism does. "Resident modules" are
loadable binaries containing a special structure telling the Os how to
initialize them and what to perform on initialization - Amiga libraries
and devices are the canonical example of these modules, the "ram-handler"
is another.
"LoadModule" can be used to install these resident modules in a reset
proof way such that they are available immediately at system bootstrap
time. This is desired whenever a module is required for booting, as
for example some of modules in the Amiga-Os ROM-Updates. "LoadModule"
can therefore be used as a more canonical form of the ROM-Updates since
it does not require an undocumented file format - modules have to be
provided as loadable disk based binaries in their most canonical form,
and can be kept in their canonical location. For example, the V45
"console.device" could be kept in DEVS: similar to all other devices.
"LoadModule" can be used as well to replace the ROM-based icon and
workbench.libraries by their disk-based 3.5 and 3.9 replacments, or
to make modules reset-proof that are typically disk-based, for example
the diskfont.library or the mmu.library.
Features:
- Requires modules as loadable binaries in a canonical and documented
file format rather than requiring an undocumented file structure.
- Checksums all modules such that damaged modules will be detected.
- May place modules in non-MEMF_KICK-able memory using some "arcane
magic" for boards where no autoconfigurable memory is available,
provided this memory is reset-persistent. This goes for most A2K
based GVP accelerators.
- May or may not cause a reboot and can therefore be bundled with
Os 3.5/3.9 SetPatch and MuMove4K.
- Before rebooting, ensures that disk buffers are written out to
avoid invalidated disks.
- Allows listing of the installed resident modules.
- Can be told to remove itself when required.
- Can be extended by means of MuProtectModules to optionally
write protect some ROM modules.
- It's free! (But check the licence conditions below.)
_____________________________________________________________________________
Synopsis:
LoadModule MODULE/M,LIST/S,NOREBOOT/S,IGNOREVERIFY/S,NOMEMFKICK/S,
REVERSE/S,HEADERFORWARDS/S,REMOVE/S
MODULE/M: Several file names of resident modules to be made
reset-resident. The file names need not to correspond
to the names of the resident modules, though.
"LoadModule" will figure out the correct names itself.
LIST/S: List all resident modules installed by "LoadModule"
NOREBOOT/S: Avoid a reboot even if this would be apropriate. This
is useful for cascading "LoadModule" with other tools
that would reboot the machine anyhow, e.g. MuMove4K.
"LoadModule" tries to reboot the machine whenever it
is invoked for the first time and no resident modules
are found, or whenever it shall be removed and some
modules are installed.
IGNOREVERIFY: Ignore invalid or non-validated devices when rebooting.
Otherwise, LoadModule would abort the reboot process
printing a warning message.
This is useful if you must work with a damaged drive
always returning an error status.
This will also disable the smart shut-down mechanism
which would otherwise shut down all filing-system
devices in a "friendly" way.
NOMEMFKICK: Use MEMF_PUBLIC memory to keep the resident modules.
Note: This requires some magic *and* reset-persistent
memory. It should be used *only* in case
a) otherwise MEMF_CHIP or 16-bit memory would be used
and this is not tolerateable
*AND*
b) you really really really know what you're doing.
REVERSE: Allocate resident modules "upside down" moving them
in the top area of the memory. It is usually a good
idea to use this option.
HEADERFORWARDS: Allocate the resident part of LoadModule itself in
non-reverse sense. This resident part will install
and replace all resident modules by the disk-based
modules on a reboot and *MUST* go into MEMF_KICK able
memory (no magic here!). It is by default allocated
"upside down", but this can be disabled in case it
conflicts with some programs.
REMOVE: Removes "LoadModule" and its modules from the
reset-resident list and causes a reboot, unless
NOREBOOT is given. In that case, removal is delayed
up to the next reboot.
_____________________________________________________________________________
Examples:
The following one-liner places the Os 3.5/3.9 based icon and workbench
libraries on the reset-resident list replacing the ROM-modules. This
line should go into the startup-sequence *in front of SetPatch*
(as otherwise SetPatch does this job anyhow by a different approach...)
LoadModule LIBS:icon.library LIBS:workbench.library reverse
The following lines show how to bundle LoadModule with MuMove4K as to
avoid a double reboot:
LoadModule LIBS:icon.library LIBS:workbench.library reverse noreboot
MuMove4K
The next example demonstrates how one could replace the ROM-Updates
mechanism of SetPatch provided you would have the modules as separate
files on disk. It also disables NSD.
LoadModule LIBS:icon.library LIBS:workbench.library +
DEVS:console.device L:Ram-Handler L:FastFileSystem +
reverse noreboot
MuMove4K
SetPatch NOROMUPDATES NONSD >NIL:
Finally, the same on a GVP accelerator without automounting 32 bit
memory placing the modules in MEMF_PUBLIC instead:
LoadModule LIBS:icon.library LIBS:workbench.library +
DEVS:console.device L:Ram-Handler L:FastFileSystem +
nomemfkick noreboot
MuMove4K
SetPatch NOROMUPDATES NONSD >NIL:
List the installed resident modules:
LoadModule LIST
On my system, this presents the following output:
Resident modules installed:
icon.library icon.library 44.543 (6.6.2000)
workbench.library workbench.library 45.101 (23.11.2000)
console.device console 44.6 (31.3.2000)
ram-handler ram 44.21 (2.9.2000)
filesystem fs 45.9 (3.9.2000)
NOTE: I leave it to the expert as an "easy exercise" to extract the
resident modules out of the ROM-Updates file. Don't ask, I won't
provide further information.
_____________________________________________________________________________
History:
LoadModule 40.1:
This is the first release. It was more or less written because I don't
like the ROM-Updates mechanism overly, especially its requirement for an
undocumented file format - and as favour for Ralph Babel in return for a
new Guru-ROM and helping me on my SCSI configuration.
LoadModule 40.5:
LoadModule does no longer require 32K alignment for each of its modules,
32K alignment for the complete set of modules is now enough. However, this
requires release 40.2 of MuProtectModules or higher if module protection
is desired.
LoadModule 40.6:
Forgot to NULL terminate the resident list which could have caused crashes
on some systems. Fixed the "REMOVE" option which did not work properly.
LoadModule 40.7:
Some format strings of the "LoadModule" failure messages were corrupt. This
has been fixed now.
_____________________________________________________________________________
The THOR-Software Licence (v2, 24th June 1998)
This License applies to the computer programs known as "LoadModule"
The "Program", below, refers to such program. The "Archive" refers to the
package of distribution, as prepared by the author of the Program,
Thomas Richter. Each licensee is addressed as "you".
The Program and the data in the archive are freely distributable
under the restrictions stated below, but are also Copyright (c)
Thomas Richter.
Distribution of the Program, the Archive and the data in the Archive by a
commercial organization without written permission from the author to any
third party is prohibited if any payment is made in connection with such
distribution, whether directly (as in payment for a copy of the Program) or
indirectly (as in payment for some service related to the Program, or
payment for some product or service that includes a copy of the Program
"without charge"; these are only examples, and not an exhaustive enumeration
of prohibited activities).
However, the following methods of distribution
involving payment shall not in and of themselves be a violation of this
restriction:
(i) Posting the Program on a public access information storage and
retrieval service for which a fee is received for retrieving information
(such as an on-line service), provided that the fee is not
content-dependent (i.e., the fee would be the same for retrieving the same
volume of information consisting of random data).
(ii) Distributing the Program on a CD-ROM, provided that
a) the Archive is reproduced entirely and verbatim on such CD-ROM, including
especially this licence agreement;
b) the CD-ROM is made available to the public for a nominal fee only,
c) a copy of the CD is made available to the author for free except for
shipment costs, and
d) provided further that all information on such CD-ROM is redistributable
for non-commercial purposes without charge.
Redistribution of a modified version of the Archive, the Program or the
contents of the Archive is prohibited in any way, by any organization,
regardless whether commercial or non-commercial. Everything must be kept
together, in original and unmodified form.
Limitations.
THE PROGRAM IS PROVIDED TO YOU "AS IS", WITHOUT WARRANTY. THERE IS NO
WARRANTY FOR THE PROGRAM, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. THE ENTIRE
RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD
THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY
SERVICING, REPAIR OR CORRECTION.
IF YOU DO NOT ACCEPT THIS LICENCE, YOU MUST DELETE THE PROGRAM, THE ARCHIVE
AND ALL DATA OF THIS ARCHIVE FROM YOUR STORAGE SYSTEM. YOU ACCEPT THIS
LICENCE BY USING OR REDISTRIBUTING THE PROGRAM.
Thomas Richter
_____________________________________________________________________________
Thomas,
May 2001