Setup autotools project.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
--- /dev/null
+*.o
+*/.deps/
+*~
+/aclocal.m4
+/autom4te.cache
+/config.cache
+/config.log
+/config.status
+/configure
+Makefile
+Makefile.in
+config-h.in
+config.h
+stamp-h1
+src/hvrtc
+m4/libtool.m4
+m4/ltoptions.m4
+m4/ltsugar.m4
+m4/ltversion.m4
+m4/lt~obsolete.m4
+build-aux/ltmain.sh
+libtool
--- /dev/null
+Authors of hvrtc.
+
+Written by Hugo Villeneuve.
+Based on "Real Time Clock Driver Test/Example Program" by Paul Gortmaker.
--- /dev/null
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
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+
+ Finally, any free program is threatened constantly by software
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+patent must be licensed for everyone's free use or not licensed at all.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+\f
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+\f
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it. For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
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+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+\f
+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+\f
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 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.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+\f
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
--- /dev/null
+Copyright 1994, 1995, 1996, 1999, 2000, 2001, 2002 Free Software
+Foundation, Inc.
+
+ This file is free documentation; the Free Software Foundation gives
+unlimited permission to copy, distribute and modify it.
+
+Basic Installation
+==================
+
+ These are generic installation instructions.
+
+ The `configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation. It uses
+those values to create a `Makefile' in each directory of the package.
+It may also create one or more `.h' files containing system-dependent
+definitions. Finally, it creates a shell script `config.status' that
+you can run in the future to recreate the current configuration, and a
+file `config.log' containing compiler output (useful mainly for
+debugging `configure').
+
+ It can also use an optional file (typically called `config.cache'
+and enabled with `--cache-file=config.cache' or simply `-C') that saves
+the results of its tests to speed up reconfiguring. (Caching is
+disabled by default to prevent problems with accidental use of stale
+cache files.)
+
+ If you need to do unusual things to compile the package, please try
+to figure out how `configure' could check whether to do them, and mail
+diffs or instructions to the address given in the `README' so they can
+be considered for the next release. If you are using the cache, and at
+some point `config.cache' contains results you don't want to keep, you
+may remove or edit it.
+
+ The file `configure.ac' (or `configure.in') is used to create
+`configure' by a program called `autoconf'. You only need
+`configure.ac' if you want to change it or regenerate `configure' using
+a newer version of `autoconf'.
+
+The simplest way to compile this package is:
+
+ 1. `cd' to the directory containing the package's source code and type
+ `./configure' to configure the package for your system. If you're
+ using `csh' on an old version of System V, you might need to type
+ `sh ./configure' instead to prevent `csh' from trying to execute
+ `configure' itself.
+
+ Running `configure' takes awhile. While running, it prints some
+ messages telling which features it is checking for.
+
+ 2. Type `make' to compile the package.
+
+ 3. Optionally, type `make check' to run any self-tests that come with
+ the package.
+
+ 4. Type `make install' to install the programs and any data files and
+ documentation.
+
+ 5. You can remove the program binaries and object files from the
+ source code directory by typing `make clean'. To also remove the
+ files that `configure' created (so you can compile the package for
+ a different kind of computer), type `make distclean'. There is
+ also a `make maintainer-clean' target, but that is intended mainly
+ for the package's developers. If you use it, you may have to get
+ all sorts of other programs in order to regenerate files that came
+ with the distribution.
+
+Compilers and Options
+=====================
+
+ Some systems require unusual options for compilation or linking that
+the `configure' script does not know about. Run `./configure --help'
+for details on some of the pertinent environment variables.
+
+ You can give `configure' initial values for configuration parameters
+by setting variables in the command line or in the environment. Here
+is an example:
+
+ ./configure CC=c89 CFLAGS=-O2 LIBS=-lposix
+
+ *Note Defining Variables::, for more details.
+
+Compiling For Multiple Architectures
+====================================
+
+ You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory. To do this, you must use a version of `make' that
+supports the `VPATH' variable, such as GNU `make'. `cd' to the
+directory where you want the object files and executables to go and run
+the `configure' script. `configure' automatically checks for the
+source code in the directory that `configure' is in and in `..'.
+
+ If you have to use a `make' that does not support the `VPATH'
+variable, you have to compile the package for one architecture at a
+time in the source code directory. After you have installed the
+package for one architecture, use `make distclean' before reconfiguring
+for another architecture.
+
+Installation Names
+==================
+
+ By default, `make install' will install the package's files in
+`/usr/local/bin', `/usr/local/man', etc. You can specify an
+installation prefix other than `/usr/local' by giving `configure' the
+option `--prefix=PATH'.
+
+ You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files. If you
+give `configure' the option `--exec-prefix=PATH', the package will use
+PATH as the prefix for installing programs and libraries.
+Documentation and other data files will still use the regular prefix.
+
+ In addition, if you use an unusual directory layout you can give
+options like `--bindir=PATH' to specify different values for particular
+kinds of files. Run `configure --help' for a list of the directories
+you can set and what kinds of files go in them.
+
+ If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving `configure' the
+option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
+
+Optional Features
+=================
+
+ Some packages pay attention to `--enable-FEATURE' options to
+`configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to `--with-PACKAGE' options, where PACKAGE
+is something like `gnu-as' or `x' (for the X Window System). The
+`README' should mention any `--enable-' and `--with-' options that the
+package recognizes.
+
+ For packages that use the X Window System, `configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the `configure' options `--x-includes=DIR' and
+`--x-libraries=DIR' to specify their locations.
+
+Specifying the System Type
+==========================
+
+ There may be some features `configure' cannot figure out
+automatically, but needs to determine by the type of machine the package
+will run on. Usually, assuming the package is built to be run on the
+_same_ architectures, `configure' can figure that out, but if it prints
+a message saying it cannot guess the machine type, give it the
+`--build=TYPE' option. TYPE can either be a short name for the system
+type, such as `sun4', or a canonical name which has the form:
+
+ CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+ OS KERNEL-OS
+
+ See the file `config.sub' for the possible values of each field. If
+`config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+ If you are _building_ compiler tools for cross-compiling, you should
+use the `--target=TYPE' option to select the type of system they will
+produce code for.
+
+ If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with `--host=TYPE'.
+
+Sharing Defaults
+================
+
+ If you want to set default values for `configure' scripts to share,
+you can create a site shell script called `config.site' that gives
+default values for variables like `CC', `cache_file', and `prefix'.
+`configure' looks for `PREFIX/share/config.site' if it exists, then
+`PREFIX/etc/config.site' if it exists. Or, you can set the
+`CONFIG_SITE' environment variable to the location of the site script.
+A warning: not all `configure' scripts look for a site script.
+
+Defining Variables
+==================
+
+ Variables not defined in a site shell script can be set in the
+environment passed to `configure'. However, some packages may run
+configure again during the build, and the customized values of these
+variables may be lost. In order to avoid this problem, you should set
+them in the `configure' command line, using `VAR=value'. For example:
+
+ ./configure CC=/usr/local2/bin/gcc
+
+will cause the specified gcc to be used as the C compiler (unless it is
+overridden in the site shell script).
+
+`configure' Invocation
+======================
+
+ `configure' recognizes the following options to control how it
+operates.
+
+`--help'
+`-h'
+ Print a summary of the options to `configure', and exit.
+
+`--version'
+`-V'
+ Print the version of Autoconf used to generate the `configure'
+ script, and exit.
+
+`--cache-file=FILE'
+ Enable the cache: use and save the results of the tests in FILE,
+ traditionally `config.cache'. FILE defaults to `/dev/null' to
+ disable caching.
+
+`--config-cache'
+`-C'
+ Alias for `--cache-file=config.cache'.
+
+`--quiet'
+`--silent'
+`-q'
+ Do not print messages saying which checks are being made. To
+ suppress all normal output, redirect it to `/dev/null' (any error
+ messages will still be shown).
+
+`--srcdir=DIR'
+ Look for the package's source code in directory DIR. Usually
+ `configure' can determine that directory automatically.
+
+`configure' also accepts some other, not widely useful, options. Run
+`configure --help' for more details.
+
--- /dev/null
+## Makefile.am -- Process this file with automake to produce Makefile.in
+
+SUBDIRS = \
+ src \
+ doc
+
+ACLOCAL_AMFLAGS = -I m4
+
+LIBTOOL_MACROS = \
+ m4/libtool.m4 \
+ m4/ltoptions.m4 \
+ m4/ltsugar.m4 \
+ m4/ltversion.m4 \
+ m4/lt~obsolete.m4
+
+CLEANFILES = *~
+
+DISTCLEANFILES = .deps/*.P
+
+MAINTAINERCLEANFILES = \
+ Makefile.in \
+ aclocal.m4 \
+ configure \
+ config-h.in \
+ stamp-h.in \
+ $(ac_aux_dir)/depcomp \
+ $(ac_aux_dir)/install-sh \
+ $(ac_aux_dir)/missing \
+ $(ac_aux_dir)/mkinstalldirs \
+ $(ac_aux_dir)/config.guess \
+ $(ac_aux_dir)/config.sub \
+ $(ac_aux_dir)/ltmain.sh \
+ $(ac_aux_dir)/compile \
+ $(ac_aux_dir)/test-driver \
+ $(ac_aux_dir)/ar-lib \
+ $(ac_aux_dir)/ylwrap \
+ $(LIBTOOL_MACROS)
--- /dev/null
+2020-12-01: hvrtc-1.0.0 has been released.
+ Initial version.
--- /dev/null
+hvrtc
+
+hvrtc is a tool to configure/query RTC devices.
+
+For recent project news, see the NEWS file.
+
+Project website:
+
+ http://www.hugovil.com/hvrtc
+
+Installation:
+
+ For installation instructions, see the INSTALL file.
+
+Cross-compiling:
+
+ ./configure --host=arm-linux-gnueabi
--- /dev/null
+#!/bin/sh
+# autogen.sh -- Use this script to create generated files from the git distribution
+
+set -e
+autoreconf -vi
+rm -rf autom4te.cache
--- /dev/null
+compile
+config.guess
+config.rpath
+config.sub
+depcomp
+install-sh
+missing
+test-driver
+ar-lib
--- /dev/null
+# configure.ac -- Process this file with autoconf to produce configure
+
+dnl Initialization stuff.
+AC_INIT([hvrtc],[1.0.0],[hugo@hugovil.com],[hvrtc],[http://www.hugovil.com/hvrtc/])
+AC_CONFIG_AUX_DIR([build-aux])
+AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_SRCDIR(src/options.c)
+AC_CONFIG_HEADERS(config.h:config-h.in)
+
+dnl -Wno-extra-portability:
+dnl To get rid of message:
+dnl linking libraries using a non-POSIX archiver requires 'AM_PROG_AR'...
+dnl -Wall:
+dnl Ask automake to turn on all warnings (not a gcc flag)
+AM_INIT_AUTOMAKE([no-define gnits dist-bzip2 color-tests
+ -Wall -Wno-extra-portability])
+AM_SILENT_RULES([yes])
+
+dnl Testing the C compiler.
+AC_LANG([C])
+
+dnl Testing for libtool support.
+LT_INIT
+
+dnl Checking for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+AC_TYPE_PID_T
+AC_TYPE_SIZE_T
+
+dnl Basic warning CFLAGS values
+WARNINGCFLAGS="-Wall -Wextra -Wformat -Wformat-security"
+
+AC_SUBST(WARNINGCFLAGS)
+AC_SUBST(ac_aux_dir)
+
+dnl Creating output file(s)
+AC_CONFIG_FILES([Makefile
+ src/Makefile
+ doc/Makefile])
+
+AC_OUTPUT
--- /dev/null
+## Makefile.am -- Process this file with automake to produce Makefile.in
+
+man1_MANS = hvrtc.man
+
+EXTRA_DIST = $(man1_MANS)
+
+CLEANFILES = *~
+
+MAINTAINERCLEANFILES = Makefile.in
--- /dev/null
+.TH HVRTC 1 "December 2020" "hvrtc" "User's Manual"
+
+.SH NAME
+hvrtc \- tool to configure/query RTC devices.
+
+.SH SYNOPSIS
+.B hvrtc
+[\fIOPTION\fR]... [\fIFILENAME\fR]
+
+.SH DESCRIPTION
+\fBhvrtc\fR is a ... [TODO].
+
+.SH "OPTIONS"
+
+.TP
+\fB\-h\fR
+display usage and exit
+.TP
+\fB\-version\fR
+output version information and exit
+
+.SH CREDITS
+\fBhvrtc\fR was originally written by Hugo Villeneuve <hugo@hugovil.com>, based on
+"Real Time Clock Driver Test/Example Program" by Paul Gortmaker.
+
+.SH COPYRIGHT
+\fBhvrtc\fR is free; anyone may redistribute it to anyone under the terms
+stated in the GNU General Public License. A copy of the license is included in
+the \fBhvrtc\fR distribution. You can also browse it online at
+.I http://www.gnu.org/copyleft/gpl.html
--- /dev/null
+# This file is processed by GNU automake to generate Makefile.in
+
+AM_CPPFLAGS = \
+ $(WARNINGCFLAGS)
+
+bin_PROGRAMS = hvrtc
+
+hvrtc_SOURCES = \
+ main.c \
+ options.c options.h
+
+CLEANFILES = *~
+
+MAINTAINERCLEANFILES = \
+ Makefile.in
--- /dev/null
+/*
+ * Released under the GNU General Public License, version 2,
+ *
+ * Based on "Real Time Clock Driver Test/Example Program"
+ * Copyright (C) 1996, Paul Gortmaker.
+ *
+ * Copyright (C) 2020 Hugo Villeneuve <hugo@hugovil.com>
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <linux/limits.h>
+#include <linux/rtc.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "options.h"
+
+extern struct options_t options;
+
+static int rtc_param_get_bsm(int fd)
+{
+ const char *mode;
+ struct rtc_param par;
+ int ret;
+
+ par.param = RTC_PARAM_BACKUP_SWITCH_MODE;
+ ret = ioctl(fd, RTC_PARAM_GET, &par);
+ if (ret < 0) {
+ perror("get RTC_PARAM_BACKUP_SWITCH_MODE");
+ return ret;
+ }
+
+ switch (par.uvalue) {
+ case RTC_BSM_DISABLED:
+ mode = "disabled";
+ break;
+ case RTC_BSM_DIRECT:
+ mode = "direct";
+ break;
+ case RTC_BSM_LEVEL:
+ mode = "level";
+ break;
+ case RTC_BSM_STANDBY:
+ mode = "standby";
+ break;
+ default:
+ mode = "unknown";
+ break;
+ };
+
+ printf("Backup switch mode: %s\n", mode);
+
+ return 0;
+}
+
+static int rtc_param_set_bsm(int fd, int value)
+{
+ struct rtc_param par;
+ int ret;
+
+ par.param = RTC_PARAM_BACKUP_SWITCH_MODE;
+ par.uvalue = value;
+
+ printf("Set backup switch mode to: $%02X\n", value);
+
+ ret = ioctl(fd, RTC_PARAM_SET, &par);
+ if (ret < 0) {
+ perror("set RTC_PARAM_BACKUP_SWITCH_MODE");
+ return ret;
+ }
+
+ return 0;
+}
+
+int
+main(int argc, char **argv)
+{
+ int rc;
+ int i, fd, retval, irqcount = 0;
+ unsigned long tmp, data;
+ struct rtc_time rtc_tm;
+
+ rc = parse_command_line_options(argc, argv);
+ if (rc)
+ exit(EXIT_FAILURE);
+
+ fd = open(options.rtc_path, O_RDONLY);
+ if (fd == -1) {
+ perror(options.rtc_path);
+ exit(errno);
+ }
+
+ if (options.bsm) {
+ if (options.bsm_arg >= 0) {
+ retval = rtc_param_set_bsm(fd, options.bsm_arg);
+ if (retval < 0)
+ exit(retval);
+ } else {
+ retval = rtc_param_get_bsm(fd);
+ if (retval < 0)
+ exit(retval);
+ }
+ }
+
+ printf("RTC test\n");
+
+ /* Test for backup conditions */
+ retval = ioctl(fd, RTC_VL_READ, &tmp);
+ if (retval < 0) {
+ fprintf(stderr, "\n...RTC_VL_READ ioctl not supported.\n");
+ } else {
+ fprintf(stderr, "RTC_VL_READ: $%02lX\n", tmp);
+
+ if (tmp & RTC_VL_BACKUP_LOW)
+ fprintf(stderr, "Backup low voltage detected, check/replace RTC battery\n");
+
+ if (tmp & RTC_VL_BACKUP_SWITCH)
+ fprintf(stderr, "Backup switchover happened\n");
+
+ if (tmp & RTC_VL_DATA_INVALID)
+ fprintf(stderr, "Voltage too low, RTC data is invalid\n");
+ }
+
+ /* Turn on update interrupts (one per second) */
+ retval = ioctl(fd, RTC_UIE_ON, 0);
+ if (retval == -1) {
+ if (errno == ENOTTY) {
+ fprintf(stderr,
+ "\n...Update IRQs not supported.\n");
+ goto test_READ;
+ }
+ perror("RTC_UIE_ON ioctl");
+ exit(errno);
+ }
+ fprintf(stderr, "Counting 5 update (1/sec) interrupts from reading %s:",
+ options.rtc_path);
+ fflush(stderr);
+ for (i=1; i<6; i++) {
+ /* This read will block */
+ retval = read(fd, &data, sizeof(unsigned long));
+ if (retval == -1) {
+ perror("read");
+ exit(errno);
+ }
+ fprintf(stderr, " %d",i);
+ fflush(stderr);
+ irqcount++;
+ }
+ fprintf(stderr, "\nAgain, from using select(2) on /dev/rtc:");
+ fflush(stderr);
+ for (i=1; i<6; i++) {
+ struct timeval tv = {5, 0}; /* 5 second timeout on select */
+ fd_set readfds;
+ FD_ZERO(&readfds);
+ FD_SET(fd, &readfds);
+ /* The select will wait until an RTC interrupt happens. */
+ retval = select(fd+1, &readfds, NULL, NULL, &tv);
+ if (retval == -1) {
+ perror("select");
+ exit(errno);
+ }
+ /* This read won't block unlike the select-less case above. */
+ retval = read(fd, &data, sizeof(unsigned long));
+ if (retval == -1) {
+ perror("read");
+ exit(errno);
+ }
+ fprintf(stderr, " %d",i);
+ fflush(stderr);
+ irqcount++;
+ }
+ /* Turn off update interrupts */
+ retval = ioctl(fd, RTC_UIE_OFF, 0);
+ if (retval == -1) {
+ perror("RTC_UIE_OFF ioctl");
+ exit(errno);
+ }
+test_READ:
+ /* Read the RTC time/date */
+ retval = ioctl(fd, RTC_RD_TIME, &rtc_tm);
+ if (retval == -1) {
+ perror("RTC_RD_TIME ioctl");
+ exit(errno);
+ }
+ fprintf(stderr, "\n\nCurrent RTC date/time is %d-%d-%d, %02d:%02d:%02d.\n",
+ rtc_tm.tm_mday, rtc_tm.tm_mon + 1, rtc_tm.tm_year + 1900,
+ rtc_tm.tm_hour, rtc_tm.tm_min, rtc_tm.tm_sec);
+ /* Set the alarm to 5 sec in the future, and check for rollover */
+ rtc_tm.tm_sec += 5;
+ if (rtc_tm.tm_sec >= 60) {
+ rtc_tm.tm_sec %= 60;
+ rtc_tm.tm_min++;
+ }
+ if (rtc_tm.tm_min == 60) {
+ rtc_tm.tm_min = 0;
+ rtc_tm.tm_hour++;
+ }
+ if (rtc_tm.tm_hour == 24)
+ rtc_tm.tm_hour = 0;
+ retval = ioctl(fd, RTC_ALM_SET, &rtc_tm);
+ if (retval == -1) {
+ if (errno == ENOTTY) {
+ fprintf(stderr,
+ "\n...Alarm IRQs not supported.\n");
+ goto test_PIE;
+ }
+ perror("RTC_ALM_SET ioctl");
+ exit(errno);
+ }
+ /* Read the current alarm settings */
+ retval = ioctl(fd, RTC_ALM_READ, &rtc_tm);
+ if (retval == -1) {
+ perror("RTC_ALM_READ ioctl");
+ exit(errno);
+ }
+ fprintf(stderr, "Alarm time now set to %02d:%02d:%02d.\n",
+ rtc_tm.tm_hour, rtc_tm.tm_min, rtc_tm.tm_sec);
+
+ /* Enable alarm interrupts */
+ retval = ioctl(fd, RTC_AIE_ON, 0);
+ if (retval == -1) {
+ perror("RTC_AIE_ON ioctl");
+ exit(errno);
+ }
+ fprintf(stderr, "Waiting 5 seconds for alarm...");
+ fflush(stderr);
+ /* This blocks until the alarm ring causes an interrupt */
+ retval = read(fd, &data, sizeof(unsigned long));
+ if (retval == -1) {
+ perror("read");
+ exit(errno);
+ }
+ irqcount++;
+ fprintf(stderr, " okay. Alarm rang.\n");
+ /* Disable alarm interrupts */
+ retval = ioctl(fd, RTC_AIE_OFF, 0);
+ if (retval == -1) {
+ perror("RTC_AIE_OFF ioctl");
+ exit(errno);
+ }
+test_PIE:
+ /* Read periodic IRQ rate */
+ retval = ioctl(fd, RTC_IRQP_READ, &tmp);
+ if (retval == -1) {
+ /* not all RTCs support periodic IRQs */
+ if (errno == ENOTTY) {
+ fprintf(stderr, "\nNo periodic IRQ support\n");
+ goto done;
+ }
+ perror("RTC_IRQP_READ ioctl");
+ exit(errno);
+ }
+ fprintf(stderr, "\nPeriodic IRQ rate is %ldHz.\n", tmp);
+ fprintf(stderr, "Counting 20 interrupts at:");
+ fflush(stderr);
+ /* The frequencies 128Hz, 256Hz, ... 8192Hz are only allowed for root. */
+ for (tmp=2; tmp<=64; tmp*=2) {
+ retval = ioctl(fd, RTC_IRQP_SET, tmp);
+ if (retval == -1) {
+ /* not all RTCs can change their periodic IRQ rate */
+ if (errno == ENOTTY) {
+ fprintf(stderr,
+ "\n...Periodic IRQ rate is fixed\n");
+ goto done;
+ }
+ perror("RTC_IRQP_SET ioctl");
+ exit(errno);
+ }
+ fprintf(stderr, "\n%ldHz:\t", tmp);
+ fflush(stderr);
+ /* Enable periodic interrupts */
+ retval = ioctl(fd, RTC_PIE_ON, 0);
+ if (retval == -1) {
+ perror("RTC_PIE_ON ioctl");
+ exit(errno);
+ }
+ for (i=1; i<21; i++) {
+ /* This blocks */
+ retval = read(fd, &data, sizeof(unsigned long));
+ if (retval == -1) {
+ perror("read");
+ exit(errno);
+ }
+ fprintf(stderr, " %d",i);
+ fflush(stderr);
+ irqcount++;
+ }
+ /* Disable periodic interrupts */
+ retval = ioctl(fd, RTC_PIE_OFF, 0);
+ if (retval == -1) {
+ perror("RTC_PIE_OFF ioctl");
+ exit(errno);
+ }
+ }
+done:
+ close(fd);
+
+ return 0;
+}
--- /dev/null
+/*
+ * options.c -- functions for processing command-line options and arguments
+ *
+ * Copyright (C) 2011 Hugo Villeneuve <hugo@hugovil.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <argp.h>
+#include <stdarg.h> /* va_start */
+
+#if STDC_HEADERS
+# include <string.h>
+#elif HAVE_STRINGS_H
+# include <strings.h>
+#endif
+
+#include "options.h"
+
+#define STREQ(s1, s2) (strcmp ((s1), (s2)) == 0)
+
+const char *argp_program_version = PACKAGE_VERSION;
+const char *argp_program_bug_address = PACKAGE_BUGREPORT;
+
+/*
+ * Program documentation.
+ * Adjacent string constants are concatenated as one string constant.
+ */
+static const char str_doc[] = PACKAGE_NAME " -- " PACKAGE_DESCRIPTION;
+
+/* How many non-option arguments we accept. */
+#define ARGS_COUNT 0
+
+/* A description of the non-option arguments we accept. */
+static const char args_doc[] = "";
+
+/* The options we understand. */
+static struct argp_option argp_options[] = {
+ {"bsm", 'b', "value", OPTION_ARG_OPTIONAL, "Get/Set Backup Switch Mode (BSM)", 0},
+ {"dev", 'd', "path", 0, "RTC device path (optional)", 0},
+ { 0 }
+};
+
+struct options_t options;
+
+/* Log error message. */
+void log_err(const char *format, ...)
+{
+ FILE *stream = stderr;
+ va_list ap;
+
+ va_start(ap, format);
+ (void) vfprintf(stream, format, ap);
+ va_end(ap);
+}
+
+/* Log error message and exits with error code. */
+void log_fail(const char *format, ...)
+{
+ va_list ap;
+
+ va_start(ap, format);
+ log_err(format, ap);
+ va_end(ap);
+
+ exit(EXIT_FAILURE);
+}
+
+static void
+decode_int(char *arg, struct argp_state *state, int *dest)
+{
+ char *endptr;
+
+ *dest = strtol(arg, &endptr, 0);
+
+ if (*endptr != '\0') {
+ log_err("Invalid option: %s\n", arg);
+ argp_usage(state);
+ }
+}
+
+/* Parse a single option. */
+static error_t
+parse_opt(int key, char *arg, struct argp_state *state)
+{
+ switch (key) {
+ case 'b':
+ options.bsm = true;
+ if (arg)
+ decode_int(arg, state, &options.bsm_arg);
+ break;
+ case 'd':
+ options.rtc_path = arg;
+ break;
+ case ARGP_KEY_ARG:
+ /* We do not support any arguments after the options. */
+ argp_usage(state);
+ break;
+ default:
+ return ARGP_ERR_UNKNOWN;
+ }
+
+ return 0;
+}
+
+/* Our argp parser. */
+static struct argp argp = {argp_options, parse_opt, args_doc, str_doc,
+ NULL, NULL, NULL};
+
+/* Initializes the different options passed as arguments on the command line. */
+int parse_command_line_options(int argc, char *argv[])
+{
+ error_t rc;
+
+ /* Setting default values. */
+ bzero(&options, sizeof(struct options_t));
+ options.rtc_path = "/dev/rtc0";
+ options.bsm_arg = -1;
+
+ /* Parse our arguments. */
+ rc = argp_parse(&argp, argc, argv, 0, 0, NULL);
+ if (rc != 0)
+ log_fail("Failed to parse command line arguments\n");
+
+ return rc;
+}
--- /dev/null
+/*
+ * options.h
+ *
+ * Copyright (C) 1999 Hugo Villeneuve <hugo@hugovil.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#ifndef OPTIONS_H
+#define OPTIONS_H 1
+
+#include <stdint.h>
+
+#define PACKAGE_COPYRIGHT "(c) Hugo Villeneuve"
+
+#define PACKAGE_DESCRIPTION "RTC configuration/query tool"
+
+struct options_t {
+ char *rtc_path;
+ int bsm;
+ int bsm_arg;
+};
+
+int parse_command_line_options(int argc, char *argv[]);
+
+#endif /* OPTIONS_H */
projects / hvrtc.git / commitdiff