multiboot2: Clarify usage of the address tag

Add a note to spell out that if the address tag is not present the
file should be loaded using the elf header.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

.bzrignore

@@ -1,3 +1,6 @@
+gendocs.sh
+lib
+m4
 .deps
 Makefile
 autom4te.cache
@@ -7,9 +10,17 @@ config.log
 config.status
 stamp-h
 stamp-h1
-docs/Makefile
-docs/*.info*
-docs/.deps
+doc/Makefile
+doc/*.info*
+doc/.deps
+doc/gendocs_template
+doc/mdate-sh
+doc/Makefile.in
+doc/boot.S.texi
+doc/kernel
+doc/kernel.c.texi
+doc/multiboot.h.texi
+doc/texinfo.tex
 Makefile.in
 aclocal.m4
 config.h.in
@@ -17,9 +28,3 @@ configure
 depcomp
 install-sh
 missing
-docs/Makefile.in
-docs/boot.S.texi
-docs/kernel
-docs/kernel.c.texi
-docs/multiboot.h.texi
-docs/texinfo.tex

COPYING

@@ -1,285 +1,626 @@
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+                    GNU GENERAL PUBLIC LICENSE
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+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
 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
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If 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.
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying 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.
+  13. Use with the GNU Affero General Public License.
 
-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.
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
 
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
-
-  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.
+  14. Revised Versions 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
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU 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.
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public 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.
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
 
-			    NO WARRANTY
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
 
-  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.
+  15. Disclaimer of Warranty.
 
-  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.
+  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.
 
-		     END OF TERMS AND CONDITIONS
-
-	    How to Apply These Terms to Your New Programs
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+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.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            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
@@ -287,15 +628,15 @@ 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
+state 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) 19yy  <name of author>
+    Copyright (C) <year>  <name of author>
 
-    This program is free software; you can redistribute it and/or modify
+    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
+    the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
@@ -304,37 +645,30 @@ the "copyright" line and a pointer to where the full notice is found.
     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
-
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 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:
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
 
-    Gnomovision version 69, Copyright (C) 19yy name of author
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    <program>  Copyright (C) <year>  <name of author>
+    This program 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.
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
 
-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:
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
 
-  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.
+  The GNU 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 Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

ChangeLog

@@ -1,3 +1,178 @@
+2013-10-20  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	Add EFI mmap specification
+
+2010-09-20  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* doc/multiboot.texi: New type for badram.
+
+2010-09-20  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* doc/multiboot.texi: New tags for EFI system table, DHCP ACK, SMBIOS
+	and RSDP.
+
+2010-07-02  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* doc/multiboot.texi: Typo fix.
+
+2010-04-09  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* doc/multiboot.texi (Memory map): Add a remark about type 1.
+
+2010-04-03  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* doc/multiboot.texi (Terminology): Add a remark that "kernel" may not
+	be a part of OS.
+
+2010-04-03  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	MIPS support.
+
+	* doc/multiboot2.h (GRUB_MULTIBOOT_ARCHITECTURE_I386): Removed leftover
+	GRUB_ prefix.
+	(MULTIBOOT_ARCHITECTURE_MIPS32): New constant.
+	* doc/multiboot.texi (MIPS machine state): New section.
+	(Header magic fields): New possible value of arcitecture field.
+
+2010-03-28  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* doc/multiboot.texi: Removed the promise of BIOS availability.
+
+2010-03-28  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* configure.ac: Bump version to 1.6.
+	* doc/boot.S: Use tagged multiboot header.
+	* doc/kernel.c (cmain): Parse tagged mbi.
+	* doc/multiboot.texi: Selfishly added myself to authors.
+	(Terminology): New types u_virt and u_phys.
+	(Header address fields): Removed.
+	(Header graphics fields): Likewise.
+	(Header tags): New section.
+	(Information request header tag): Likewise.
+	(Address header tag): Likewise.
+	(Console header tags): Likewise.
+	(Module alignment tag): Likewise.
+	(Header layout): Specify new common header part.
+	(Header magic fields): Likewise.
+	(Machine state): Updated magic value.
+	(Boot information format): Changed to tagged structure.
+	* doc/multiboot2.h: Changed to tagged format.
+	* doc/src2texi: Handle more comments correctly.
+
+2010-03-14  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* doc/kernel.c (cmain): Use padding to properly display 64-bit
+	quantities.
+	(printf): Add padding support.
+	Reported by: Soeren D. Schulze.
+
+2010-02-09  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* doc/multiboot.texi: Fix a typo.
+	Reported by: Trond
+
+2010-01-20  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* doc/multiboot.texi: Define NVS and ACPI memory types.
+	* doc/multiboot.h (MULTIBOOT_MEMORY_ACPI_RECLAIMABLE): New definition.
+	(MULTIBOOT_MEMORY_NVS): Likewise.
+
+2010-01-15  Robert Millan  <rmh.grub@aybabtu.com>
+
+	* doc/boot.S: Slight adjustment to make makeinfo happy.
+	* doc/kernel.c: Likewise.
+
+2010-01-15  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* doc/kernel.c (cmain): Handle EGA text video information.
+	* doc/multiboot.h (MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT): New const.
+
+2010-01-14  Robert Millan  <rmh.grub@aybabtu.com>
+
+	* COPYING: Replace with GPLv3 text.
+	* doc/boot.S: Update to GPL version 3 or later.
+	* doc/kernel.c: Likewise.
+
+2010-01-12  Vladimir Serbinenko  <phcoder@gmail.com>
+2010-01-12  Robert Millan  <rmh.grub@aybabtu.com>
+
+	Video mode amendment by Vladimir Serbinenko.  See NEWS file for
+	details.
+
+	* NEWS: Document video mode amendment.
+	* doc/multiboot.texi: Video mode ammendment.
+	* doc/multiboot.h (MULTIBOOT_INFO_VIDEO_INFO): Remove macro.
+	(MULTIBOOT_INFO_VBE_INFO, MULTIBOOT_INFO_FRAMEBUFFER_INFO): New macros.
+	(multiboot_uint8_t): New type.
+	(struct multiboot_color): New structure.
+	(struct multiboot_info): Add new video mode fields.
+	(MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED)
+	(MULTIBOOT_FRAMEBUFFER_TYPE_RGB): New macros.
+
+	* doc/boot.S (MULTIBOOT_HEADER_FLAGS): Add `MULTIBOOT_VIDEO_MODE'.
+	(multiboot_header): Include video mode information.
+	* doc/kernel.c (cmain): Draw a blue diagonal line when video mode
+	information is provided.
+
+2010-01-07  Robert Millan  <rmh.grub@aybabtu.com>
+
+	Kick out Multiboot 2 draft as a branch.  Initially it is
+	identical to Multiboot 1, except for the magic numbers.
+
+	* doc/multiboot.h: Rename to ...
+	* doc/multiboot2.h: ... this.  Update all users.
+	(MULTIBOOT_HEADER_MAGIC): Replace with ...
+	(MULTIBOOT2_HEADER_MAGIC): ... this.  Update all users.
+	(MULTIBOOT_BOOTLOADER_MAGIC): Replace with ...
+	(MULTIBOOT2_BOOTLOADER_MAGIC): ... this.  Update all users.
+
+2010-01-07  Robert Millan  <rmh.grub@aybabtu.com>
+
+	* doc/multiboot.h (MULTIBOOT_UNSUPPORTED): Remove macro (moved to
+	GRUB).
+
+2010-01-03  Robert Millan  <rmh.grub@aybabtu.com>
+
+	Install multiboot.h system-wide.
+
+	* doc/Makefile.am (pkginclude_HEADERS): New variable.
+
+2010-01-03  Robert Millan  <rmh.grub@aybabtu.com>
+
+	* doc/boot.S (MULTIBOOT_HEADER_FLAGS): Redefine using macros.
+
+2010-01-03  Robert Millan  <rmh.grub@aybabtu.com>
+
+	* Makefile.am (web-manual): Add `all' as dependency.
+
+2010-01-02  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* doc/kernel.c (cmain): Add missing cast.
+
+2010-01-01  Robert Millan  <rmh.grub@aybabtu.com>
+
+	* autogen.sh: Use `gnulib-tool' to install gendocs.sh.
+	* Makefile.am (web-manual): New target.  Builds a web manual using
+	gendocs.sh.
+	* configure.ac (AC_PREREQ): Require Autoconf 2.59 or later.
+
+2010-01-01  Robert Millan  <rmh.grub@aybabtu.com>
+
+	Use more standard `doc' directory.
+
+	* docs: Rename to ...
+	* doc: ... this.  Update all users.
+
+	* doc/multiboot.texi: Fix an obsolete reference to `docs' directory
+	in GRUB distribution.
+
+2010-01-01  Robert Millan  <rmh.grub@aybabtu.com>
+
+	Make ia32 libc unnecessary on amd64.
+
+	* configure.ac (CFLAGS): Move down after the basic gcc tests are
+	done.  Add `-nostdlib'.
+
 2009-12-24  Robert Millan  <rmh.grub@aybabtu.com>
 
 	* configure.ac: Bump version to 0.6.96.

Makefile.am

@@ -1,3 +1,11 @@
 # Do not change this order if you don't know what you are doing.
 AUTOMAKE_OPTIONS = 1.7 gnu
-SUBDIRS = docs
+SUBDIRS = doc
+
+.PHONY: web-manual
+web-manual: all
+	@cd '$(srcdir)/doc' ; \
+		$(SHELL) ../gendocs.sh -o '$(abs_builddir)/doc/manual' \
+		--email $(PACKAGE_BUGREPORT) $(PACKAGE) \
+		"$(PACKAGE_NAME) - $(manual_title)"
+	@echo " *** Upload the doc/manual directory to web-cvs."

autogen.sh

@@ -2,6 +2,7 @@
 
 set -ex
 
+gnulib-tool --import gendocs
 aclocal
 autoheader
 

configure.ac

@@ -1,5 +1,5 @@
 dnl Configure script for GRUB.
-dnl Copyright 1999,2000,2001,2002,2003,2004,2005,2008,2009 Free Software Foundation, Inc.
+dnl Copyright 1999,2000,2001,2002,2003,2004,2005,2008,2009,2010 Free Software Foundation, Inc.
 
 dnl Permission to use, copy, modify and distribute this software and its
 dnl documentation is hereby granted, provided that both the copyright
@@ -12,14 +12,12 @@ dnl "AS IS" CONDITION.  THE FREE SOFTWARE FOUNDATION DISCLAIMS ANY
 dnl LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE
 dnl USE OF THIS SOFTWARE.
 
-AC_PREREQ(2.57)
-AC_INIT([Multiboot], [0.6.96], [bug-grub@gnu.org])
-AC_CONFIG_SRCDIR([docs/multiboot.texi])
+AC_PREREQ(2.59)
+AC_INIT([Multiboot], [2.0], [bug-grub@gnu.org])
+AC_CONFIG_SRCDIR([doc/multiboot.texi])
 AC_CONFIG_HEADER([config.h])
 AM_INIT_AUTOMAKE
 
-CFLAGS="-m32 $CFLAGS"
-
 #
 # Programs
 #
@@ -44,7 +42,8 @@ dnl Because recent automake complains about CCASFLAGS, set it here.
 CCASFLAGS='$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(CPPFLAGS) $(CFLAGS)'
 AC_SUBST(CCASFLAGS)
 
+CFLAGS="-nostdlib $CFLAGS"
 
 dnl Output.
-AC_CONFIG_FILES([Makefile docs/Makefile])
+AC_CONFIG_FILES([Makefile doc/Makefile])
 AC_OUTPUT

doc/Makefile.am

@@ -1,9 +1,10 @@
 info_TEXINFOS = multiboot.texi
-EXAMPLES = boot.S kernel.c multiboot.h
-multiboot_TEXINFOS = boot.S.texi kernel.c.texi multiboot.h.texi
+EXAMPLES = boot_mips.S kernel.c multiboot2.h
+multiboot_TEXINFOS = boot.S.texi kernel.c.texi multiboot2.h.texi
 SRC2TEXI = src2texi
 noinst_SCRIPTS = $(SRC2TEXI)
 EXTRA_PROGRAMS = kernel
+pkginclude_HEADERS = multiboot2.h
 
 # The example kernel is built if you specify --enable-example-kernel.
 if BUILD_EXAMPLE_KERNEL
@@ -11,9 +12,9 @@ noinst_PROGRAMS = kernel
 kernel_SOURCES = $(EXAMPLES)
 kernel_CFLAGS = -fno-builtin -nostdinc -O -g -Wall \
 	-imacros $(top_builddir)/config.h
-kernel_LDFLAGS = -nostdlib -Wl,-N -Wl,-Ttext -Wl,100000 -Wl,--build-id=none
+kernel_LDFLAGS = -nostdlib -Wl,-N -Wl,-Ttext -Wl,80100000 -Wl,--build-id=none
 
-boot.o: multiboot.h
+boot.o: multiboot2.h
 endif
 
 EXTRA_DIST = $(man_MANS) $(noinst_SCRIPTS) \

doc/boot.S

@@ -0,0 +1,119 @@
+/* boot.S - bootstrap the kernel */
+/* Copyright (C) 1999, 2001, 2010  Free Software Foundation, Inc.
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#define ASM_FILE	1
+#include <multiboot2.h>
+
+/* C symbol format. HAVE_ASM_USCORE is defined by configure.  */
+#ifdef HAVE_ASM_USCORE
+# define EXT_C(sym)			_ ## sym
+#else
+# define EXT_C(sym)			sym
+#endif
+
+/* The size of our stack (16KB).  */
+#define STACK_SIZE			0x4000
+
+/* The flags for the Multiboot header.  */
+#ifdef __ELF__
+# define AOUT_KLUDGE 0
+#else
+# define AOUT_KLUDGE MULTIBOOT_AOUT_KLUDGE
+#endif
+	
+	.text
+
+	.globl	start, _start
+start:
+_start:
+	jmp	multiboot_entry
+
+	/* Align 64 bits boundary.  */
+	.align	8
+	
+	/* Multiboot header.  */
+multiboot_header:
+	/* magic */
+	.long	MULTIBOOT2_HEADER_MAGIC
+	/* ISA: i386 */
+	.long   GRUB_MULTIBOOT_ARCHITECTURE_I386
+	/* Header length.  */
+	.long	multiboot_header_end - multiboot_header
+	/* checksum */
+	.long	-(MULTIBOOT2_HEADER_MAGIC + GRUB_MULTIBOOT_ARCHITECTURE_I386 + (multiboot_header_end - multiboot_header))
+#ifndef __ELF__
+address_tag_start:	
+	.short MULTIBOOT_HEADER_TAG_ADDRESS
+	.short MULTIBOOT_HEADER_TAG_OPTIONAL
+	.long address_tag_end - address_tag_start
+	/* header_addr */
+	.long	multiboot_header
+	/* load_addr */
+	.long	_start
+	/* load_end_addr */
+	.long	_edata
+	/* bss_end_addr */
+	.long	_end
+address_tag_end:
+entry_address_tag_start:	
+	.short MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS
+	.short MULTIBOOT_HEADER_TAG_OPTIONAL
+	.long entry_address_tag_end - entry_address_tag_start
+	/* entry_addr */
+	.long multiboot_entry
+entry_address_tag_end:
+#endif /* __ELF__ */
+framebuffer_tag_start:	
+	.short MULTIBOOT_HEADER_TAG_FRAMEBUFFER
+	.short MULTIBOOT_HEADER_TAG_OPTIONAL
+	.long framebuffer_tag_end - framebuffer_tag_start
+	.long 1024
+	.long 768
+	.long 32
+framebuffer_tag_end:
+	.short MULTIBOOT_HEADER_TAG_END
+	.short 0
+	.long 8
+multiboot_header_end:
+multiboot_entry:
+	/* Initialize the stack pointer.  */
+	movl	$(stack + STACK_SIZE), %esp
+
+	/* Reset EFLAGS.  */
+	pushl	$0
+	popf
+
+	/* Push the pointer to the Multiboot information structure.  */
+	pushl	%ebx
+	/* Push the magic value.  */
+	pushl	%eax
+
+	/* Now enter the C main function...  */
+	call	EXT_C(cmain)
+
+	/* Halt.  */
+	pushl	$halt_message
+	call	EXT_C(printf)
+	
+loop:	hlt
+	jmp	loop
+
+halt_message:
+	.asciz	"Halted."
+
+	/* Our stack area.  */
+	.comm	stack, STACK_SIZE

doc/boot_mips.S

@@ -0,0 +1,119 @@
+/* boot.S - bootstrap the kernel */
+/* Copyright (C) 1999, 2001, 2010  Free Software Foundation, Inc.
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#define ASM_FILE	1
+#include <multiboot2.h>
+
+/* C symbol format. HAVE_ASM_USCORE is defined by configure.  */
+#ifdef HAVE_ASM_USCORE
+# define EXT_C(sym)			_ ## sym
+#else
+# define EXT_C(sym)			sym
+#endif
+
+/* The size of our stack (16KB).  */
+#define STACK_SIZE			0x4000
+
+/* The flags for the Multiboot header.  */
+#ifdef __ELF__
+# define AOUT_KLUDGE 0
+#else
+# define AOUT_KLUDGE MULTIBOOT_AOUT_KLUDGE
+#endif
+	
+	.text
+	.set noreorder
+        .set nomacro
+
+	.globl	start, _start
+start:
+_start:
+	b	multiboot_entry
+	 nop
+
+	/* Align 64 bits boundary.  */
+	.align	8
+	
+	/* Multiboot header.  */
+multiboot_header:
+	/* magic */
+	.long	MULTIBOOT2_HEADER_MAGIC
+	/* ISA: mips32 */
+	.long   MULTIBOOT_ARCHITECTURE_MIPS32
+	/* Header length.  */
+	.long	multiboot_header_end - multiboot_header
+	/* checksum */
+	.long	-(MULTIBOOT2_HEADER_MAGIC + MULTIBOOT_ARCHITECTURE_MIPS32 + (multiboot_header_end - multiboot_header))
+#ifndef __ELF__
+address_tag_start:	
+	.short MULTIBOOT_HEADER_TAG_ADDRESS
+	.short MULTIBOOT_HEADER_TAG_OPTIONAL
+	.long address_tag_end - address_tag_start
+	/* header_addr */
+	.long	multiboot_header
+	/* load_addr */
+	.long	_start
+	/* load_end_addr */
+	.long	_edata
+	/* bss_end_addr */
+	.long	_end
+address_tag_end:
+entry_address_tag_start:	
+	.short MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS
+	.short MULTIBOOT_HEADER_TAG_OPTIONAL
+	.long entry_address_tag_end - entry_address_tag_start
+	/* entry_addr */
+	.long multiboot_entry
+entry_address_tag_end:
+#endif /* __ELF__ */
+framebuffer_tag_start:	
+	.short MULTIBOOT_HEADER_TAG_FRAMEBUFFER
+	.short MULTIBOOT_HEADER_TAG_OPTIONAL
+	.long framebuffer_tag_end - framebuffer_tag_start
+	.long 1024
+	.long 768
+	.long 32
+framebuffer_tag_end:
+	.short MULTIBOOT_HEADER_TAG_END
+	.short 0
+	.long 8
+multiboot_header_end:
+multiboot_entry:
+	/* Initialize the stack pointer.  */
+	lui     $sp, %hi (stack + STACK_SIZE)
+	addiu   $sp, $sp, %lo (stack + STACK_SIZE)
+
+	/* Now enter the C main function...  */
+	bal	EXT_C(cmain)
+	 nop
+
+	/* Halt.  */
+	lui	$a0, %hi (halt_message)
+	addiu	$a0, $a0, %lo (halt_message)
+	bal	EXT_C(printf)
+	 nop
+	
+loop:	nop
+	b loop
+	 nop
+
+halt_message:
+	.asciz	"Halted."
+
+	.align 8
+	/* Our stack area.  */
+	.comm	stack, STACK_SIZE

doc/kernel.c

@@ -0,0 +1,368 @@
+/* kernel.c - the C part of the kernel */
+/* Copyright (C) 1999, 2010  Free Software Foundation, Inc.
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "multiboot2.h"
+
+/* Macros.  */
+
+/* Some screen stuff.  */
+/* The number of columns.  */
+#define COLUMNS			80
+/* The number of lines.  */
+#define LINES			24
+/* The attribute of an character.  */
+#define ATTRIBUTE		7
+/* The video memory address.  */
+#define VIDEO			0xB8000
+
+/* Variables.  */
+/* Save the X position.  */
+static int xpos;
+/* Save the Y position.  */
+static int ypos;
+/* Point to the video memory.  */
+static volatile unsigned char *video;
+
+/* Forward declarations.  */
+void cmain (unsigned long magic, unsigned long addr);
+static void cls (void);
+static void itoa (char *buf, int base, int d);
+static void putchar (int c);
+void printf (const char *format, ...);
+
+/* Check if MAGIC is valid and print the Multiboot information structure
+   pointed by ADDR.  */
+void
+cmain (unsigned long magic, unsigned long addr)
+{  
+  struct multiboot_tag *tag;
+  unsigned size;
+
+  /* Clear the screen.  */
+  cls ();
+
+  /* Am I booted by a Multiboot-compliant boot loader?  */
+  if (magic != MULTIBOOT2_BOOTLOADER_MAGIC)
+    {
+      printf ("Invalid magic number: 0x%x\n", (unsigned) magic);
+      return;
+    }
+
+  if (addr & 7)
+    {
+      printf ("Unaligned mbi: 0x%x\n", addr);
+      return;
+    }
+
+  size = *(unsigned *) addr;
+  printf ("Announced mbi size 0x%x\n", size);
+  for (tag = (struct multiboot_tag *) (addr + 8);
+       tag->type != MULTIBOOT_TAG_TYPE_END;
+       tag = (struct multiboot_tag *) ((multiboot_uint8_t *) tag 
+				       + ((tag->size + 7) & ~7)))
+    {
+      printf ("Tag 0x%x, Size 0x%x\n", tag->type, tag->size);
+      switch (tag->type)
+	{
+	case MULTIBOOT_TAG_TYPE_CMDLINE:
+	  printf ("Command line = %s\n",
+		  ((struct multiboot_tag_string *) tag)->string);
+	  break;
+	case MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME:
+	  printf ("Boot loader name = %s\n",
+		  ((struct multiboot_tag_string *) tag)->string);
+	  break;
+	case MULTIBOOT_TAG_TYPE_MODULE:
+	  printf ("Module at 0x%x-0x%x. Command line %s\n",
+		  ((struct multiboot_tag_module *) tag)->mod_start,
+		  ((struct multiboot_tag_module *) tag)->mod_end,
+		  ((struct multiboot_tag_module *) tag)->cmdline);
+	  break;
+	case MULTIBOOT_TAG_TYPE_BASIC_MEMINFO:
+	  printf ("mem_lower = %uKB, mem_upper = %uKB\n",
+		  ((struct multiboot_tag_basic_meminfo *) tag)->mem_lower,
+		  ((struct multiboot_tag_basic_meminfo *) tag)->mem_upper);
+	  break;
+	case MULTIBOOT_TAG_TYPE_BOOTDEV:
+	  printf ("Boot device 0x%x,%u,%u\n",
+		  ((struct multiboot_tag_bootdev *) tag)->biosdev,
+		  ((struct multiboot_tag_bootdev *) tag)->slice,
+		  ((struct multiboot_tag_bootdev *) tag)->part);
+	  break;
+	case MULTIBOOT_TAG_TYPE_MMAP:
+	  {
+	    multiboot_memory_map_t *mmap;
+
+	    printf ("mmap\n");
+      
+	    for (mmap = ((struct multiboot_tag_mmap *) tag)->entries;
+		 (multiboot_uint8_t *) mmap 
+		   < (multiboot_uint8_t *) tag + tag->size;
+		 mmap = (multiboot_memory_map_t *) 
+		   ((unsigned long) mmap
+		    + ((struct multiboot_tag_mmap *) tag)->entry_size))
+	      printf (" base_addr = 0x%x%x,"
+		      " length = 0x%x%x, type = 0x%x\n",
+		      (unsigned) (mmap->addr >> 32),
+		      (unsigned) (mmap->addr & 0xffffffff),
+		      (unsigned) (mmap->len >> 32),
+		      (unsigned) (mmap->len & 0xffffffff),
+		      (unsigned) mmap->type);
+	  }
+	  break;
+	case MULTIBOOT_TAG_TYPE_FRAMEBUFFER:
+	  {
+	    multiboot_uint32_t color;
+	    unsigned i;
+	    struct multiboot_tag_framebuffer *tagfb
+	      = (struct multiboot_tag_framebuffer *) tag;
+	    void *fb = (void *) (unsigned long) tagfb->common.framebuffer_addr;
+
+	    switch (tagfb->common.framebuffer_type)
+	      {
+	      case MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED:
+		{
+		  unsigned best_distance, distance;
+		  struct multiboot_color *palette;
+	    
+		  palette = tagfb->framebuffer_palette;
+
+		  color = 0;
+		  best_distance = 4*256*256;
+	    
+		  for (i = 0; i < tagfb->framebuffer_palette_num_colors; i++)
+		    {
+		      distance = (0xff - palette[i].blue) 
+			* (0xff - palette[i].blue)
+			+ palette[i].red * palette[i].red
+			+ palette[i].green * palette[i].green;
+		      if (distance < best_distance)
+			{
+			  color = i;
+			  best_distance = distance;
+			}
+		    }
+		}
+		break;
+
+	      case MULTIBOOT_FRAMEBUFFER_TYPE_RGB:
+		color = ((1 << tagfb->framebuffer_blue_mask_size) - 1) 
+		  << tagfb->framebuffer_blue_field_position;
+		break;
+
+	      case MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT:
+		color = '\\' | 0x0100;
+		break;
+
+	      default:
+		color = 0xffffffff;
+		break;
+	      }
+	    
+	    for (i = 0; i < tagfb->common.framebuffer_width
+		   && i < tagfb->common.framebuffer_height; i++)
+	      {
+		switch (tagfb->common.framebuffer_bpp)
+		  {
+		  case 8:
+		    {
+		      multiboot_uint8_t *pixel = fb
+			+ tagfb->common.framebuffer_pitch * i + i;
+		      *pixel = color;
+		    }
+		    break;
+		  case 15:
+		  case 16:
+		    {
+		      multiboot_uint16_t *pixel
+			= fb + tagfb->common.framebuffer_pitch * i + 2 * i;
+		      *pixel = color;
+		    }
+		    break;
+		  case 24:
+		    {
+		      multiboot_uint32_t *pixel
+			= fb + tagfb->common.framebuffer_pitch * i + 3 * i;
+		      *pixel = (color & 0xffffff) | (*pixel & 0xff000000);
+		    }
+		    break;
+
+		  case 32:
+		    {
+		      multiboot_uint32_t *pixel
+			= fb + tagfb->common.framebuffer_pitch * i + 4 * i;
+		      *pixel = color;
+		    }
+		    break;
+		  }
+	      }
+	    break;
+	  }
+
+	}
+    }
+  tag = (struct multiboot_tag *) ((multiboot_uint8_t *) tag 
+				  + ((tag->size + 7) & ~7));
+  printf ("Total mbi size 0x%x\n", (unsigned) tag - addr);
+}    
+
+/* Clear the screen and initialize VIDEO, XPOS and YPOS.  */
+static void
+cls (void)
+{
+  int i;
+
+  video = (unsigned char *) VIDEO;
+  
+  for (i = 0; i < COLUMNS * LINES * 2; i++)
+    *(video + i) = 0;
+
+  xpos = 0;
+  ypos = 0;
+}
+
+/* Convert the integer D to a string and save the string in BUF. If
+   BASE is equal to 'd', interpret that D is decimal, and if BASE is
+   equal to 'x', interpret that D is hexadecimal.  */
+static void
+itoa (char *buf, int base, int d)
+{
+  char *p = buf;
+  char *p1, *p2;
+  unsigned long ud = d;
+  int divisor = 10;
+  
+  /* If %d is specified and D is minus, put `-' in the head.  */
+  if (base == 'd' && d < 0)
+    {
+      *p++ = '-';
+      buf++;
+      ud = -d;
+    }
+  else if (base == 'x')
+    divisor = 16;
+
+  /* Divide UD by DIVISOR until UD == 0.  */
+  do
+    {
+      int remainder = ud % divisor;
+      
+      *p++ = (remainder < 10) ? remainder + '0' : remainder + 'a' - 10;
+    }
+  while (ud /= divisor);
+
+  /* Terminate BUF.  */
+  *p = 0;
+  
+  /* Reverse BUF.  */
+  p1 = buf;
+  p2 = p - 1;
+  while (p1 < p2)
+    {
+      char tmp = *p1;
+      *p1 = *p2;
+      *p2 = tmp;
+      p1++;
+      p2--;
+    }
+}
+
+/* Put the character C on the screen.  */
+static void
+putchar (int c)
+{
+  if (c == '\n' || c == '\r')
+    {
+    newline:
+      xpos = 0;
+      ypos++;
+      if (ypos >= LINES)
+	ypos = 0;
+      return;
+    }
+
+  *(video + (xpos + ypos * COLUMNS) * 2) = c & 0xFF;
+  *(video + (xpos + ypos * COLUMNS) * 2 + 1) = ATTRIBUTE;
+
+  xpos++;
+  if (xpos >= COLUMNS)
+    goto newline;
+}
+
+/* Format a string and print it on the screen, just like the libc
+   function printf.  */
+void
+printf (const char *format, ...)
+{
+  char **arg = (char **) &format;
+  int c;
+  char buf[20];
+
+  arg++;
+  
+  while ((c = *format++) != 0)
+    {
+      if (c != '%')
+	putchar (c);
+      else
+	{
+	  char *p, *p2;
+	  int pad0 = 0, pad = 0;
+	  
+	  c = *format++;
+	  if (c == '0')
+	    {
+	      pad0 = 1;
+	      c = *format++;
+	    }
+
+	  if (c >= '0' && c <= '9')
+	    {
+	      pad = c - '0';
+	      c = *format++;
+	    }
+
+	  switch (c)
+	    {
+	    case 'd':
+	    case 'u':
+	    case 'x':
+	      itoa (buf, c, *((int *) arg++));
+	      p = buf;
+	      goto string;
+	      break;
+
+	    case 's':
+	      p = *arg++;
+	      if (! p)
+		p = "(null)";
+
+	    string:
+	      for (p2 = p; *p2; p2++);
+	      for (; p2 < p + pad; p2++)
+		putchar (pad0 ? '0' : ' ');
+	      while (*p)
+		putchar (*p++);
+	      break;
+
+	    default:
+	      putchar (*((int *) arg++));
+	      break;
+	    }
+	}
+    }
+}

doc/multiboot2.h

@@ -0,0 +1,417 @@
+/*  multiboot2.h - Multiboot 2 header file.  */
+/*  Copyright (C) 1999,2003,2007,2008,2009,2010  Free Software Foundation, Inc.
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to
+ *  deal in the Software without restriction, including without limitation the
+ *  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ *  sell copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL ANY
+ *  DEVELOPER OR DISTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+ *  IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef MULTIBOOT_HEADER
+#define MULTIBOOT_HEADER 1
+
+/* How many bytes from the start of the file we search for the header.  */
+#define MULTIBOOT_SEARCH			32768
+#define MULTIBOOT_HEADER_ALIGN			8
+
+/* The magic field should contain this.  */
+#define MULTIBOOT2_HEADER_MAGIC			0xe85250d6
+
+/* This should be in %eax.  */
+#define MULTIBOOT2_BOOTLOADER_MAGIC		0x36d76289
+
+/* Alignment of multiboot modules.  */
+#define MULTIBOOT_MOD_ALIGN			0x00001000
+
+/* Alignment of the multiboot info structure.  */
+#define MULTIBOOT_INFO_ALIGN			0x00000008
+
+/* Flags set in the 'flags' member of the multiboot header.  */
+
+#define MULTIBOOT_TAG_ALIGN                  8
+#define MULTIBOOT_TAG_TYPE_END               0
+#define MULTIBOOT_TAG_TYPE_CMDLINE           1
+#define MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME  2
+#define MULTIBOOT_TAG_TYPE_MODULE            3
+#define MULTIBOOT_TAG_TYPE_BASIC_MEMINFO     4
+#define MULTIBOOT_TAG_TYPE_BOOTDEV           5
+#define MULTIBOOT_TAG_TYPE_MMAP              6
+#define MULTIBOOT_TAG_TYPE_VBE               7
+#define MULTIBOOT_TAG_TYPE_FRAMEBUFFER       8
+#define MULTIBOOT_TAG_TYPE_ELF_SECTIONS      9
+#define MULTIBOOT_TAG_TYPE_APM               10
+#define MULTIBOOT_TAG_TYPE_EFI32             11
+#define MULTIBOOT_TAG_TYPE_EFI64             12
+#define MULTIBOOT_TAG_TYPE_SMBIOS            13
+#define MULTIBOOT_TAG_TYPE_ACPI_OLD          14
+#define MULTIBOOT_TAG_TYPE_ACPI_NEW          15
+#define MULTIBOOT_TAG_TYPE_NETWORK           16
+#define MULTIBOOT_TAG_TYPE_EFI_MMAP          17
+#define MULTIBOOT_TAG_TYPE_EFI_BS            18
+#define MULTIBOOT_TAG_TYPE_EFI32_IH          19
+#define MULTIBOOT_TAG_TYPE_EFI64_IH          20
+#define MULTIBOOT_TAG_TYPE_LOAD_BASE_ADDR    21
+
+#define MULTIBOOT_HEADER_TAG_END  0
+#define MULTIBOOT_HEADER_TAG_INFORMATION_REQUEST  1
+#define MULTIBOOT_HEADER_TAG_ADDRESS  2
+#define MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS  3
+#define MULTIBOOT_HEADER_TAG_CONSOLE_FLAGS  4
+#define MULTIBOOT_HEADER_TAG_FRAMEBUFFER  5
+#define MULTIBOOT_HEADER_TAG_MODULE_ALIGN  6
+#define MULTIBOOT_HEADER_TAG_EFI_BS        7
+#define MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS_EFI32  8
+#define MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS_EFI64  9
+#define MULTIBOOT_HEADER_TAG_RELOCATABLE  10
+
+#define MULTIBOOT_ARCHITECTURE_I386  0
+#define MULTIBOOT_ARCHITECTURE_MIPS32  4
+#define MULTIBOOT_HEADER_TAG_OPTIONAL 1
+
+#define MULTIBOOT_LOAD_PREFERENCE_NONE 0
+#define MULTIBOOT_LOAD_PREFERENCE_LOW 1
+#define MULTIBOOT_LOAD_PREFERENCE_HIGH 2
+
+#define MULTIBOOT_CONSOLE_FLAGS_CONSOLE_REQUIRED 1
+#define MULTIBOOT_CONSOLE_FLAGS_EGA_TEXT_SUPPORTED 2
+
+#ifndef ASM_FILE
+
+typedef unsigned char		multiboot_uint8_t;
+typedef unsigned short		multiboot_uint16_t;
+typedef unsigned int		multiboot_uint32_t;
+typedef unsigned long long	multiboot_uint64_t;
+
+struct multiboot_header
+{
+  /* Must be MULTIBOOT_MAGIC - see above.  */
+  multiboot_uint32_t magic;
+
+  /* ISA */
+  multiboot_uint32_t architecture;
+
+  /* Total header length.  */
+  multiboot_uint32_t header_length;
+
+  /* The above fields plus this one must equal 0 mod 2^32. */
+  multiboot_uint32_t checksum;
+};
+
+struct multiboot_header_tag
+{
+  multiboot_uint16_t type;
+  multiboot_uint16_t flags;
+  multiboot_uint32_t size;
+};
+
+struct multiboot_header_tag_information_request
+{
+  multiboot_uint16_t type;
+  multiboot_uint16_t flags;
+  multiboot_uint32_t size;
+  multiboot_uint32_t requests[0];
+};
+
+struct multiboot_header_tag_address
+{
+  multiboot_uint16_t type;
+  multiboot_uint16_t flags;
+  multiboot_uint32_t size;
+  multiboot_uint32_t header_addr;
+  multiboot_uint32_t load_addr;
+  multiboot_uint32_t load_end_addr;
+  multiboot_uint32_t bss_end_addr;
+};
+
+struct multiboot_header_tag_entry_address
+{
+  multiboot_uint16_t type;
+  multiboot_uint16_t flags;
+  multiboot_uint32_t size;
+  multiboot_uint32_t entry_addr;
+};
+
+struct multiboot_header_tag_console_flags
+{
+  multiboot_uint16_t type;
+  multiboot_uint16_t flags;
+  multiboot_uint32_t size;
+  multiboot_uint32_t console_flags;
+};
+
+struct multiboot_header_tag_framebuffer
+{
+  multiboot_uint16_t type;
+  multiboot_uint16_t flags;
+  multiboot_uint32_t size;
+  multiboot_uint32_t width;
+  multiboot_uint32_t height;
+  multiboot_uint32_t depth;
+};
+
+struct multiboot_header_tag_module_align
+{
+  multiboot_uint16_t type;
+  multiboot_uint16_t flags;
+  multiboot_uint32_t size;
+};
+
+struct multiboot_header_tag_relocatable
+{
+  multiboot_uint16_t type;
+  multiboot_uint16_t flags;
+  multiboot_uint32_t size;
+  multiboot_uint32_t min_addr;
+  multiboot_uint32_t max_addr;
+  multiboot_uint32_t align;
+  multiboot_uint32_t preference;
+};
+
+struct multiboot_color
+{
+  multiboot_uint8_t red;
+  multiboot_uint8_t green;
+  multiboot_uint8_t blue;
+};
+
+struct multiboot_mmap_entry
+{
+  multiboot_uint64_t addr;
+  multiboot_uint64_t len;
+#define MULTIBOOT_MEMORY_AVAILABLE		1
+#define MULTIBOOT_MEMORY_RESERVED		2
+#define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE       3
+#define MULTIBOOT_MEMORY_NVS                    4
+#define MULTIBOOT_MEMORY_BADRAM                 5
+  multiboot_uint32_t type;
+  multiboot_uint32_t zero;
+};
+typedef struct multiboot_mmap_entry multiboot_memory_map_t;
+
+struct multiboot_tag
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+};
+
+struct multiboot_tag_string
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  char string[0];
+};
+
+struct multiboot_tag_module
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint32_t mod_start;
+  multiboot_uint32_t mod_end;
+  char cmdline[0];
+};
+
+struct multiboot_tag_basic_meminfo
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint32_t mem_lower;
+  multiboot_uint32_t mem_upper;
+};
+
+struct multiboot_tag_bootdev
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint32_t biosdev;
+  multiboot_uint32_t slice;
+  multiboot_uint32_t part;
+};
+
+struct multiboot_tag_mmap
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint32_t entry_size;
+  multiboot_uint32_t entry_version;
+  struct multiboot_mmap_entry entries[0];  
+};
+
+struct multiboot_vbe_info_block
+{
+  multiboot_uint8_t external_specification[512];
+};
+
+struct multiboot_vbe_mode_info_block
+{
+  multiboot_uint8_t external_specification[256];
+};
+
+struct multiboot_tag_vbe
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+
+  multiboot_uint16_t vbe_mode;
+  multiboot_uint16_t vbe_interface_seg;
+  multiboot_uint16_t vbe_interface_off;
+  multiboot_uint16_t vbe_interface_len;
+
+  struct multiboot_vbe_info_block vbe_control_info;
+  struct multiboot_vbe_mode_info_block vbe_mode_info;
+};
+
+struct multiboot_tag_framebuffer_common
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+
+  multiboot_uint64_t framebuffer_addr;
+  multiboot_uint32_t framebuffer_pitch;
+  multiboot_uint32_t framebuffer_width;
+  multiboot_uint32_t framebuffer_height;
+  multiboot_uint8_t framebuffer_bpp;
+#define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED 0
+#define MULTIBOOT_FRAMEBUFFER_TYPE_RGB     1
+#define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT	2
+  multiboot_uint8_t framebuffer_type;
+  multiboot_uint16_t reserved;
+};
+
+struct multiboot_tag_framebuffer
+{
+  struct multiboot_tag_framebuffer_common common;
+
+  union
+  {
+    struct
+    {
+      multiboot_uint16_t framebuffer_palette_num_colors;
+      struct multiboot_color framebuffer_palette[0];
+    };
+    struct
+    {
+      multiboot_uint8_t framebuffer_red_field_position;
+      multiboot_uint8_t framebuffer_red_mask_size;
+      multiboot_uint8_t framebuffer_green_field_position;
+      multiboot_uint8_t framebuffer_green_mask_size;
+      multiboot_uint8_t framebuffer_blue_field_position;
+      multiboot_uint8_t framebuffer_blue_mask_size;
+    };
+  };
+};
+
+struct multiboot_tag_elf_sections
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint32_t num;
+  multiboot_uint32_t entsize;
+  multiboot_uint32_t shndx;
+  char sections[0];
+};
+
+struct multiboot_tag_apm
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint16_t version;
+  multiboot_uint16_t cseg;
+  multiboot_uint32_t offset;
+  multiboot_uint16_t cseg_16;
+  multiboot_uint16_t dseg;
+  multiboot_uint16_t flags;
+  multiboot_uint16_t cseg_len;
+  multiboot_uint16_t cseg_16_len;
+  multiboot_uint16_t dseg_len;
+};
+
+struct multiboot_tag_efi32
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint32_t pointer;
+};
+
+struct multiboot_tag_efi64
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint64_t pointer;
+};
+
+struct multiboot_tag_smbios
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint8_t major;
+  multiboot_uint8_t minor;
+  multiboot_uint8_t reserved[6];
+  multiboot_uint8_t tables[0];
+};
+
+struct multiboot_tag_old_acpi
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint8_t rsdp[0];
+};
+
+struct multiboot_tag_new_acpi
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint8_t rsdp[0];
+};
+
+struct multiboot_tag_network
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint8_t dhcpack[0];
+};
+
+struct multiboot_tag_efi_mmap
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint32_t descr_size;
+  multiboot_uint32_t descr_vers;
+  multiboot_uint8_t efi_mmap[0];
+}; 
+
+struct multiboot_tag_efi32_ih
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint32_t pointer;
+};
+
+struct multiboot_tag_efi64_ih
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint64_t pointer;
+};
+
+struct multiboot_tag_load_base_addr
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint32_t load_base_addr;
+};
+
+#endif /* ! ASM_FILE */
+
+#endif /* ! MULTIBOOT_HEADER */

doc/src2texi

@@ -10,7 +10,7 @@ texi=`basename $3`
 
 sed -e 's,[{}],@&,g'					\
     -e 's,/\*\(@.*\)\*/,\1,g'				\
-    -e 's,/\*  *,/* @r{,g' -e 's,  *\*/,} */,'		\
+    -e 's,/\*,/* @r{,g' -e 's,  *\*/,} */,'		\
     -e 's/\(@[a-z][a-z]*\)@{\([^}]*\)@}/\1{\2}/g'	\
     ${dir}/${src} | expand > ${texi}.new
 mv -f ${texi}.new ${dir}/${texi}

docs/boot.S

@@ -1,96 +0,0 @@
-/* boot.S - bootstrap the kernel */
-/* Copyright (C) 1999, 2001  Free Software Foundation, Inc.
-
-   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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
-
-#define ASM_FILE	1
-#include <multiboot.h>
-
-/* C symbol format. HAVE_ASM_USCORE is defined by configure.  */
-#ifdef HAVE_ASM_USCORE
-# define EXT_C(sym)			_ ## sym
-#else
-# define EXT_C(sym)			sym
-#endif
-
-/* The size of our stack (16KB).  */
-#define STACK_SIZE			0x4000
-
-/* The flags for the Multiboot header.  */
-#ifdef __ELF__
-# define MULTIBOOT_HEADER_FLAGS		0x00000003
-#else
-# define MULTIBOOT_HEADER_FLAGS		0x00010003
-#endif
-	
-	.text
-
-	.globl	start, _start
-start:
-_start:
-	jmp	multiboot_entry
-
-	/* Align 32 bits boundary.  */
-	.align	4
-	
-	/* Multiboot header.  */
-multiboot_header:
-	/* magic */
-	.long	MULTIBOOT_HEADER_MAGIC
-	/* flags */
-	.long	MULTIBOOT_HEADER_FLAGS
-	/* checksum */
-	.long	-(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
-#ifndef __ELF__
-	/* header_addr */
-	.long	multiboot_header
-	/* load_addr */
-	.long	_start
-	/* load_end_addr */
-	.long	_edata
-	/* bss_end_addr */
-	.long	_end
-	/* entry_addr */
-	.long	multiboot_entry
-#endif /* ! __ELF__ */
-
-multiboot_entry:
-	/* Initialize the stack pointer.  */
-	movl	$(stack + STACK_SIZE), %esp
-
-	/* Reset EFLAGS.  */
-	pushl	$0
-	popf
-
-	/* Push the pointer to the Multiboot information structure.  */
-	pushl	%ebx
-	/* Push the magic value.  */
-	pushl	%eax
-
-	/* Now enter the C main function...  */
-	call	EXT_C(cmain)
-
-	/* Halt.  */
-	pushl	$halt_message
-	call	EXT_C(printf)
-	
-loop:	hlt
-	jmp	loop
-
-halt_message:
-	.asciz	"Halted."
-
-	/* Our stack area.  */
-	.comm	stack, STACK_SIZE

docs/kernel.c

@@ -1,284 +0,0 @@
-/* kernel.c - the C part of the kernel */
-/* Copyright (C) 1999  Free Software Foundation, Inc.
-   
-   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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
-
-#include <multiboot.h>
-
-/* Macros.  */
-
-/* Check if the bit BIT in FLAGS is set.  */
-#define CHECK_FLAG(flags,bit)	((flags) & (1 << (bit)))
-
-/* Some screen stuff.  */
-/* The number of columns.  */
-#define COLUMNS			80
-/* The number of lines.  */
-#define LINES			24
-/* The attribute of an character.  */
-#define ATTRIBUTE		7
-/* The video memory address.  */
-#define VIDEO			0xB8000
-
-/* Variables.  */
-/* Save the X position.  */
-static int xpos;
-/* Save the Y position.  */
-static int ypos;
-/* Point to the video memory.  */
-static volatile unsigned char *video;
-
-/* Forward declarations.  */
-void cmain (unsigned long magic, unsigned long addr);
-static void cls (void);
-static void itoa (char *buf, int base, int d);
-static void putchar (int c);
-void printf (const char *format, ...);
-
-/* Check if MAGIC is valid and print the Multiboot information structure
-   pointed by ADDR.  */
-void
-cmain (unsigned long magic, unsigned long addr)
-{
-  multiboot_info_t *mbi;
-  
-  /* Clear the screen.  */
-  cls ();
-
-  /* Am I booted by a Multiboot-compliant boot loader?  */
-  if (magic != MULTIBOOT_BOOTLOADER_MAGIC)
-    {
-      printf ("Invalid magic number: 0x%x\n", (unsigned) magic);
-      return;
-    }
-
-  /* Set MBI to the address of the Multiboot information structure.  */
-  mbi = (multiboot_info_t *) addr;
-
-  /* Print out the flags.  */
-  printf ("flags = 0x%x\n", (unsigned) mbi->flags);
-
-  /* Are mem_* valid?  */
-  if (CHECK_FLAG (mbi->flags, 0))
-    printf ("mem_lower = %uKB, mem_upper = %uKB\n",
-	    (unsigned) mbi->mem_lower, (unsigned) mbi->mem_upper);
-
-  /* Is boot_device valid?  */
-  if (CHECK_FLAG (mbi->flags, 1))
-    printf ("boot_device = 0x%x\n", (unsigned) mbi->boot_device);
-  
-  /* Is the command line passed?  */
-  if (CHECK_FLAG (mbi->flags, 2))
-    printf ("cmdline = %s\n", (char *) mbi->cmdline);
-
-  /* Are mods_* valid?  */
-  if (CHECK_FLAG (mbi->flags, 3))
-    {
-      multiboot_module_t *mod;
-      int i;
-      
-      printf ("mods_count = %d, mods_addr = 0x%x\n",
-	      (int) mbi->mods_count, (int) mbi->mods_addr);
-      for (i = 0, mod = (multiboot_module_t *) mbi->mods_addr;
-	   i < mbi->mods_count;
-	   i++, mod++)
-	printf (" mod_start = 0x%x, mod_end = 0x%x, cmdline = %s\n",
-		(unsigned) mod->mod_start,
-		(unsigned) mod->mod_end,
-		(char *) mod->cmdline);
-    }
-
-  /* Bits 4 and 5 are mutually exclusive!  */
-  if (CHECK_FLAG (mbi->flags, 4) && CHECK_FLAG (mbi->flags, 5))
-    {
-      printf ("Both bits 4 and 5 are set.\n");
-      return;
-    }
-
-  /* Is the symbol table of a.out valid?  */
-  if (CHECK_FLAG (mbi->flags, 4))
-    {
-      multiboot_aout_symbol_table_t *multiboot_aout_sym = &(mbi->u.aout_sym);
-      
-      printf ("multiboot_aout_symbol_table: tabsize = 0x%0x, "
-	      "strsize = 0x%x, addr = 0x%x\n",
-	      (unsigned) multiboot_aout_sym->tabsize,
-	      (unsigned) multiboot_aout_sym->strsize,
-	      (unsigned) multiboot_aout_sym->addr);
-    }
-
-  /* Is the section header table of ELF valid?  */
-  if (CHECK_FLAG (mbi->flags, 5))
-    {
-      multiboot_elf_section_header_table_t *multiboot_elf_sec = &(mbi->u.elf_sec);
-
-      printf ("multiboot_elf_sec: num = %u, size = 0x%x,"
-	      " addr = 0x%x, shndx = 0x%x\n",
-	      (unsigned) multiboot_elf_sec->num, (unsigned) multiboot_elf_sec->size,
-	      (unsigned) multiboot_elf_sec->addr, (unsigned) multiboot_elf_sec->shndx);
-    }
-
-  /* Are mmap_* valid?  */
-  if (CHECK_FLAG (mbi->flags, 6))
-    {
-      multiboot_memory_map_t *mmap;
-      
-      printf ("mmap_addr = 0x%x, mmap_length = 0x%x\n",
-	      (unsigned) mbi->mmap_addr, (unsigned) mbi->mmap_length);
-      for (mmap = (multiboot_memory_map_t *) mbi->mmap_addr;
-	   (unsigned long) mmap < mbi->mmap_addr + mbi->mmap_length;
-	   mmap = (multiboot_memory_map_t *) ((unsigned long) mmap
-				    + mmap->size + sizeof (mmap->size)))
-	printf (" size = 0x%x, base_addr = 0x%x%x,"
-		" length = 0x%x%x, type = 0x%x\n",
-		(unsigned) mmap->size,
-		mmap->addr >> 32,
-		mmap->addr & 0xffffffff,
-		mmap->len >> 32,
-		mmap->len & 0xffffffff,
-		(unsigned) mmap->type);
-    }
-}    
-
-/* Clear the screen and initialize VIDEO, XPOS and YPOS.  */
-static void
-cls (void)
-{
-  int i;
-
-  video = (unsigned char *) VIDEO;
-  
-  for (i = 0; i < COLUMNS * LINES * 2; i++)
-    *(video + i) = 0;
-
-  xpos = 0;
-  ypos = 0;
-}
-
-/* Convert the integer D to a string and save the string in BUF. If
-   BASE is equal to 'd', interpret that D is decimal, and if BASE is
-   equal to 'x', interpret that D is hexadecimal.  */
-static void
-itoa (char *buf, int base, int d)
-{
-  char *p = buf;
-  char *p1, *p2;
-  unsigned long ud = d;
-  int divisor = 10;
-  
-  /* If %d is specified and D is minus, put `-' in the head.  */
-  if (base == 'd' && d < 0)
-    {
-      *p++ = '-';
-      buf++;
-      ud = -d;
-    }
-  else if (base == 'x')
-    divisor = 16;
-
-  /* Divide UD by DIVISOR until UD == 0.  */
-  do
-    {
-      int remainder = ud % divisor;
-      
-      *p++ = (remainder < 10) ? remainder + '0' : remainder + 'a' - 10;
-    }
-  while (ud /= divisor);
-
-  /* Terminate BUF.  */
-  *p = 0;
-  
-  /* Reverse BUF.  */
-  p1 = buf;
-  p2 = p - 1;
-  while (p1 < p2)
-    {
-      char tmp = *p1;
-      *p1 = *p2;
-      *p2 = tmp;
-      p1++;
-      p2--;
-    }
-}
-
-/* Put the character C on the screen.  */
-static void
-putchar (int c)
-{
-  if (c == '\n' || c == '\r')
-    {
-    newline:
-      xpos = 0;
-      ypos++;
-      if (ypos >= LINES)
-	ypos = 0;
-      return;
-    }
-
-  *(video + (xpos + ypos * COLUMNS) * 2) = c & 0xFF;
-  *(video + (xpos + ypos * COLUMNS) * 2 + 1) = ATTRIBUTE;
-
-  xpos++;
-  if (xpos >= COLUMNS)
-    goto newline;
-}
-
-/* Format a string and print it on the screen, just like the libc
-   function printf.  */
-void
-printf (const char *format, ...)
-{
-  char **arg = (char **) &format;
-  int c;
-  char buf[20];
-
-  arg++;
-  
-  while ((c = *format++) != 0)
-    {
-      if (c != '%')
-	putchar (c);
-      else
-	{
-	  char *p;
-	  
-	  c = *format++;
-	  switch (c)
-	    {
-	    case 'd':
-	    case 'u':
-	    case 'x':
-	      itoa (buf, c, *((int *) arg++));
-	      p = buf;
-	      goto string;
-	      break;
-
-	    case 's':
-	      p = *arg++;
-	      if (! p)
-		p = "(null)";
-
-	    string:
-	      while (*p)
-		putchar (*p++);
-	      break;
-
-	    default:
-	      putchar (*((int *) arg++));
-	      break;
-	    }
-	}
-    }
-}

docs/multiboot.h

@@ -1,223 +0,0 @@
-/*  multiboot.h - Multiboot header file.  */
-/*  Copyright (C) 1999,2003,2007,2008,2009  Free Software Foundation, Inc.
- *
- *  Permission is hereby granted, free of charge, to any person obtaining a copy
- *  of this software and associated documentation files (the "Software"), to
- *  deal in the Software without restriction, including without limitation the
- *  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- *  sell copies of the Software, and to permit persons to whom the Software is
- *  furnished to do so, subject to the following conditions:
- *
- *  The above copyright notice and this permission notice shall be included in
- *  all copies or substantial portions of the Software.
- *
- *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL ANY
- *  DEVELOPER OR DISTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- *  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
- *  IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#ifndef MULTIBOOT_HEADER
-#define MULTIBOOT_HEADER 1
-
-/* How many bytes from the start of the file we search for the header.  */
-#define MULTIBOOT_SEARCH			8192
-
-/* The magic field should contain this.  */
-#define MULTIBOOT_HEADER_MAGIC			0x1BADB002
-
-/* This should be in %eax.  */
-#define MULTIBOOT_BOOTLOADER_MAGIC		0x2BADB002
-
-/* The bits in the required part of flags field we don't support.  */
-#define MULTIBOOT_UNSUPPORTED			0x0000fffc
-
-/* Alignment of multiboot modules.  */
-#define MULTIBOOT_MOD_ALIGN			0x00001000
-
-/* Alignment of the multiboot info structure.  */
-#define MULTIBOOT_INFO_ALIGN			0x00000004
-
-/* Flags set in the 'flags' member of the multiboot header.  */
-
-/* Align all boot modules on i386 page (4KB) boundaries.  */
-#define MULTIBOOT_PAGE_ALIGN			0x00000001
-
-/* Must pass memory information to OS.  */
-#define MULTIBOOT_MEMORY_INFO			0x00000002
-
-/* Must pass video information to OS.  */
-#define MULTIBOOT_VIDEO_MODE			0x00000004
-
-/* This flag indicates the use of the address fields in the header.  */
-#define MULTIBOOT_AOUT_KLUDGE			0x00010000
-
-/* Flags to be set in the 'flags' member of the multiboot info structure.  */
-
-/* is there basic lower/upper memory information? */
-#define MULTIBOOT_INFO_MEMORY			0x00000001
-/* is there a boot device set? */
-#define MULTIBOOT_INFO_BOOTDEV			0x00000002
-/* is the command-line defined? */
-#define MULTIBOOT_INFO_CMDLINE			0x00000004
-/* are there modules to do something with? */
-#define MULTIBOOT_INFO_MODS			0x00000008
-
-/* These next two are mutually exclusive */
-
-/* is there a symbol table loaded? */
-#define MULTIBOOT_INFO_AOUT_SYMS		0x00000010
-/* is there an ELF section header table? */
-#define MULTIBOOT_INFO_ELF_SHDR			0X00000020
-
-/* is there a full memory map? */
-#define MULTIBOOT_INFO_MEM_MAP			0x00000040
-
-/* Is there drive info?  */
-#define MULTIBOOT_INFO_DRIVE_INFO		0x00000080
-
-/* Is there a config table?  */
-#define MULTIBOOT_INFO_CONFIG_TABLE		0x00000100
-
-/* Is there a boot loader name?  */
-#define MULTIBOOT_INFO_BOOT_LOADER_NAME		0x00000200
-
-/* Is there a APM table?  */
-#define MULTIBOOT_INFO_APM_TABLE		0x00000400
-
-/* Is there video information?  */
-#define MULTIBOOT_INFO_VIDEO_INFO		0x00000800
-
-#ifndef ASM_FILE
-
-typedef unsigned short		multiboot_uint16_t;
-typedef unsigned int		multiboot_uint32_t;
-typedef unsigned long long	multiboot_uint64_t;
-
-struct multiboot_header
-{
-  /* Must be MULTIBOOT_MAGIC - see above.  */
-  multiboot_uint32_t magic;
-
-  /* Feature flags.  */
-  multiboot_uint32_t flags;
-
-  /* The above fields plus this one must equal 0 mod 2^32. */
-  multiboot_uint32_t checksum;
-
-  /* These are only valid if MULTIBOOT_AOUT_KLUDGE is set.  */
-  multiboot_uint32_t header_addr;
-  multiboot_uint32_t load_addr;
-  multiboot_uint32_t load_end_addr;
-  multiboot_uint32_t bss_end_addr;
-  multiboot_uint32_t entry_addr;
-
-  /* These are only valid if MULTIBOOT_VIDEO_MODE is set.  */
-  multiboot_uint32_t mode_type;
-  multiboot_uint32_t width;
-  multiboot_uint32_t height;
-  multiboot_uint32_t depth;
-};
-
-/* The symbol table for a.out.  */
-struct multiboot_aout_symbol_table
-{
-  multiboot_uint32_t tabsize;
-  multiboot_uint32_t strsize;
-  multiboot_uint32_t addr;
-  multiboot_uint32_t reserved;
-};
-typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t;
-
-/* The section header table for ELF.  */
-struct multiboot_elf_section_header_table
-{
-  multiboot_uint32_t num;
-  multiboot_uint32_t size;
-  multiboot_uint32_t addr;
-  multiboot_uint32_t shndx;
-};
-typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t;
-
-struct multiboot_info
-{
-  /* Multiboot info version number */
-  multiboot_uint32_t flags;
-
-  /* Available memory from BIOS */
-  multiboot_uint32_t mem_lower;
-  multiboot_uint32_t mem_upper;
-
-  /* "root" partition */
-  multiboot_uint32_t boot_device;
-
-  /* Kernel command line */
-  multiboot_uint32_t cmdline;
-
-  /* Boot-Module list */
-  multiboot_uint32_t mods_count;
-  multiboot_uint32_t mods_addr;
-
-  union
-  {
-    multiboot_aout_symbol_table_t aout_sym;
-    multiboot_elf_section_header_table_t elf_sec;
-  } u;
-
-  /* Memory Mapping buffer */
-  multiboot_uint32_t mmap_length;
-  multiboot_uint32_t mmap_addr;
-
-  /* Drive Info buffer */
-  multiboot_uint32_t drives_length;
-  multiboot_uint32_t drives_addr;
-
-  /* ROM configuration table */
-  multiboot_uint32_t config_table;
-
-  /* Boot Loader Name */
-  multiboot_uint32_t boot_loader_name;
-
-  /* APM table */
-  multiboot_uint32_t apm_table;
-
-  /* Video */
-  multiboot_uint32_t vbe_control_info;
-  multiboot_uint32_t vbe_mode_info;
-  multiboot_uint16_t vbe_mode;
-  multiboot_uint16_t vbe_interface_seg;
-  multiboot_uint16_t vbe_interface_off;
-  multiboot_uint16_t vbe_interface_len;
-};
-typedef struct multiboot_info multiboot_info_t;
-
-struct multiboot_mmap_entry
-{
-  multiboot_uint32_t size;
-  multiboot_uint64_t addr;
-  multiboot_uint64_t len;
-#define MULTIBOOT_MEMORY_AVAILABLE		1
-#define MULTIBOOT_MEMORY_RESERVED		2
-  multiboot_uint32_t type;
-} __attribute__((packed));
-typedef struct multiboot_mmap_entry multiboot_memory_map_t;
-
-struct multiboot_mod_list
-{
-  /* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */
-  multiboot_uint32_t mod_start;
-  multiboot_uint32_t mod_end;
-
-  /* Module command line */
-  multiboot_uint32_t cmdline;
-
-  /* padding to take it to 16 bytes (must be zero) */
-  multiboot_uint32_t pad;
-};
-typedef struct multiboot_mod_list multiboot_module_t;
-
-#endif /* ! ASM_FILE */
-
-#endif /* ! MULTIBOOT_HEADER */