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util/boot/LoadModule.lha

Mirror:Random
Showing:m68k-amigaosgeneric
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Short:Install Libs/Devs reset-proof
Author:thorfdbg at alumni.tu-berlin.de (Thomas Richter), Etienne.Vogt at obspm.fr (Etienne Vogt)
Uploader:thorfdbg alumni tu-berlin de (Thomas Richter)
Type:util/boot
Version:45.9
Requires:3.5 or 3.9 recommended, possibly MuProtectModules.lha
Architecture:m68k-amigaos >= 2.0.4
Date:2017-04-30
Download:http://aminet.net/util/boot/LoadModule.lha - View contents
Readme:http://aminet.net/util/boot/LoadModule.readme
Downloads:6886
-----------------------------------------------------------------------------

New in V45:	Can also load the 3.9 exec.library, and can upgrade the ROM
		fully automatically from disk. See below for details.
		
		For a quick start, just run "ExtractModule" without any
		arguments on an Os 3.9 system. This will place all modules
		of the ROM Updates in the right places, and LoadModule AUTO
		will pick them up correctly.

-----------------------------------------------------------------------------

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.
-	Also supports loading a new exec.library (system core) into RAM
-	Can automatically replace ROM modules by checking the disk contents.
-	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,AUTO/S,EXECTOCHIP/S,
		ALLTOCHIP/S,DOWNGRADE/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.
			The module names can also be specified by wildcards
			which will be resolved by LoadModule automatically.	

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.
			This also overrides the ALLTOCHIP flag.
			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.

AUTO:			Will automatically scan the system disk for modules
			that replace the ROM contents and will upgrade them.
			This will augment the list of modules provided through
			the MODULE argument. 

			See the separate "Modules.readme" file for the precise
			path where LoadModule will check. For the impatient
			readers: It is exactly where you would expect them,
			plus a couple of additional places.

			The modules from the AmigaOs 3.9 "ROM Updates" can be
			placed on disk by typing the command "ExtractModules"
			on the shell. This will perform the module extraction
			automatically and will place the modules in the right
			places.

EXECTOCHIP:		Will instruct LoadModule to place the critical exec
			library in chip memory instead of trying to detect a
			suitable RAM type itself. The system may then boot
			slower than necessary due to the rather slow chip
			memory access. Exec (and other system modules) can
			be remapped to faster RAM type during the boot process
			with

			MuProtectModules ON REMAP

			MuProtectModules is part of the MuTools package and
			available separately. Note that you need V45 or later.

ALLTOCHIP:		Enforce that all resident modules, even the non-
			critical ones (i.e. all except exec) go to chip memory
			while this should rarely be possible, it might be
			necessary on machines whose firmware announces memory
			types incorrectly. This flag is overridden by
			NOMEMFKICK.

DOWNGRADE:		Also allow to replace an existing module by a module
			of the same or lower revision.
			DANGEROUS! THIS IS NOT RECOMMENDED! MODULES HAVE
			VERSIONS FOR REASONS.
______________________________________________________________________________

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 NOROMUPDATE NONSD >NIL:


A simpler version of the above detects all modules automatically:

LoadModule AUTO
MuMove4K
SetPatch NOROMUPDATE NONSD >NIL:


Finally, the same on a GVP accelerator without autoconfiguring 32 bit
memory placing the modules in MEMF_PUBLIC instead. MuProtectModules is
here used to relocate the memory to the 32bit RAM while booting:


LoadModule AUTO NOMEMFKICK EXECTOCHIP
MuMove4K
SetPatch NOROMUPDATE NONSD >NIL:
MuProtectModules ON REMAP


List the installed resident modules:

LoadModule LIST


Modules may be extracted from the ROM-Updates file using the ExtractModule
command included in this archive.

ExtractModule	FROM/K,MODULE/N,TO,OVERWRITE/S

FROM/K:		The ROM-Updates file containing resident modules. Defaults
		to "DEVS:AmigaOS ROM Update".

MODULE/N:	The sequence number of the module to extract. I leave it as
		an "easy exercise" how to identify the extracted module.
		If no module is given, LoadModule will extract all modules.

TO:		The file that will contain the extracted module. If not given,
		ExtractModule will pick a location for you. See the
		"Modules.readme" file for details.

_____________________________________________________________________________

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.


LoadModule 40.8:

Fixed handling of RELOC32SHORT hunks, I forgot the pad-word. (*sigh*)


LoadModule 40.9:

Fixed the installation of resident modules that did not conflict with one
of the ROM resident modules. LoadModule could have run into an endless
loop in the previous releases if you tried to install a non-ROM segment.


LoadModule 40.10:

Fixed again the installation of additional resident modules. 
LoadModules failed to initialize the new modules completely
in this case due to the way how exec runs the init modules.
Fixed in 40.10. Thanks to Christian Sauer and Etienne Vogt
for reporting the bug.


LoadModule 40.11:

Fixed the new module initialization bug again as Thomas only had the source
code for version 40.9 in his backups. Fixed allocation of the stack saveback
area so it is not cleared and other resident stuff that may be located at
memory top is not wiped out. Made LoadModule 2.04 compatible by reverting
to the more restrictive MEMF_LOCAL memory attribute under 2.04 KickStart
instead of the 3.0+ MEMF_KICK.


LoadModule 40.12:

This release merges the changes Etienne made back into the main development
branch. No functional changes.


LoadModule 40.13:

Apparently, MEMF_KICK is broken on some installations in 3.0, and thus
is no longer the default for resident modules unless a 3.1 system is found.
NOMEMFKICK now also applies to the resident part of LoadModule itself
except that it will then try MEMF_LOCAL instead as MEMF_PUBLIC is definitely
unsuitable for the resident part of LoadModule itself. Note that for some
kickstarts, MEMF_REVERSE is also broken - try then HEADERFORWARDS.


LoadModule 45.5:

A major rework of the program. The exec.library can now be loaded as well,
though the mechanism is a bit different to the trick used by SetPatch (and
simpler, too.). "expansion.library" is the only library that cannot be
replaced by LoadModules on all systems - the same goes for SetPatch.

Added the "AUTO" switch to scan the disk automatically for replacment modules,
manual selection of modules is no longer necessary.


LoadModule 45.6:

Module names are now also allowed to be wild-cards. LoadModule will resolve
them automatically and will remove duplicates before attempting to load any.
Added the DOWNGRADE option due to popular demand. Note that this is not
recommended. Added the ALLTOCHIP option as last resort for machines whose
memory types are announced incorrectly. Refined the requirements for the 
memory types for exec as apparently there are boards in the wild that provide
MEMF_LOCAL memory that is not suitable for kick tags.


LoadModule 45.7:

The previous release could not change the priority of ROM resident modules,
or rather, it did not leave the list of resident modules sorted by priority
as it should. This has been fixed. Also fixed (probably) the non-working
DOWNGRADE option of the 45.6 release.


LoadModule 45.8:

LoadModule uses MEMF_LOCAL memory in case it is told not to try MEMF_KICK.
Unfortunately, this memory type is broken in at least two cases: First,
Ranger memory (at 0x00c00000) is unfortunately corrupted during a reset
due to a bug in the exec coldstart function, so is not usable. Second, there
is at least one CD32 memory expansion that incorrectly announces its memory
as MEMF_LOCAL, even though the memory does go away on reset. This release
tries to detect such cases and automatically reverts to chip memory for
the critical system parts. Resident modules itself, except for exec, will
still go to regular memory if the NOMEMFKICK flag is provided.


LoadModule 45.9:

MuProtectModules REMAP did strange and wonderful things if used jointly
with LoadModule, and the system was reset and not exactly in the same
shape (or something else used up the memory for the modules). Bummer!
This version will reset the internal state variables of MuProtectModules,
avoiding the issue after a reset.

_____________________________________________________________________________

                     The THOR/EV-Software Licence (v3, 23th March 2003)


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 authors of the Program, 
Thomas Richter and Etienne Vogt. 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 (upto V40.10) and Etienne Vogt (V40.11 and up).

Distribution of the Program, the Archive and the data in the Archive by a
commercial organization without written permission from the authors 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 authors 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
							Etienne Vogt
_____________________________________________________________________________


Contents of util/boot/LoadModule.lha
PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[unknown]                 2767    4460  62.0% -lh5- 2159 Mar 22 10:12 LoadModule/ExtractModule
[unknown]                 7335   11312  64.8% -lh5- 6e59 Apr 29 00:47 LoadModule/LoadModule
[unknown]                 6920   17403  39.8% -lh5- 4fb0 Apr 29 01:11 LoadModule/LoadModule.readme
[unknown]                  370     852  43.4% -lh5- 27fd Jan 28  2001 LoadModule/LoadModule.readme.info
[unknown]                 1945    4599  42.3% -lh5- 9467 Dec 13 15:25 LoadModule/Modules.readme
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total         5 files   19337   38626  50.1%            Apr 30 16:15

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