Commit graph

52 commits

Author SHA1 Message Date
Uwe Hermann
8c8b512726 Cosmetic fixes (trivial).
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@341 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-06-02 12:28:58 +00:00
Stefan Reinauer
05822903f7 doxygen is a phony target (trivial)
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@334 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-05-21 22:49:12 +00:00
Uwe Hermann
53099f8d1c Fix various license headers.
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@330 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-05-20 20:35:59 +00:00
Stefan Reinauer
9caaf62dd5 Move console/*.c into lib/ in order to simplify the directory structure.
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@315 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-05-06 09:35:25 +00:00
Uwe Hermann
71ccb36afc Massive file rename and moving orgy:
- Everything in include/cpu/generic/x86/arch/* goes into
   include/arch/x86 now.

 - include/cpu/generic/x86/div64.h moves into include/arch/x86, too.

 - The former include/cpu/generic/x86/arch/elf.h moved to
   include/arch/x86/archelf.h, as elf.h already exists in include/
   and we must prevent a name clash.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@314 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-05-05 21:36:52 +00:00
Uwe Hermann
c624f5ad37 Document why CFLAGS is set in that very location, as that's non-obvious
and could be easily missed. Also, some minor cosmetics.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@312 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-05-05 20:02:19 +00:00
Stefan Reinauer
290f6df4b8 the nostdinc + gcc... hack breaks build if "gcc" isn't the compiler
actually used for the build (eg. on cross compiler setups), if that
compiler is too different from "gcc" (the one in PATH)

Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@310 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-05-05 19:51:27 +00:00
Stefan Reinauer
16d16c155f stop using linux system includes. only use gcc includes. Trivial one liner.
Thanks, Segher.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@306 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-05-04 23:05:00 +00:00
Stefan Reinauer
f76ae0d8a7 due to the recent cosmetical fixes, this flag is no longer needed.
(trivial)
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@296 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-04-28 11:32:05 +00:00
Stefan Reinauer
6c83d8c8c5 * update i82371eb code
* add mc146818rtc runtime option code
* drop linuxbios_tables.h - its redundant (tables.h)
* add subsystem id support
* add option_table as a lar file
* fix a typo in xconfig
* clean up x86emu makefile
* add initial support for normal/fallback (incomplete)
* add back LBCHKSUM support in linuxbios table

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>




git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@287 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-04-23 23:41:32 +00:00
Stefan Reinauer
6b12fd134f - new function in xcompile: searchgnu that looks for g$1, gnu$1 and $1 and
checks if they're GNU (by grepping for GNU in --version)
- use searchgnu to find objcopy, gnu ld, gnu as.
- set $(LEX) to flex
- add some search path to get whoami on solaris
- replace dnsdomainname with domainname if dnsdomainname is missing
- use $(OBJCOPY) instead of objcopy

Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@284 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-04-19 23:29:30 +00:00
Uwe Hermann
6818904cd3 Fix 'make doxy' to do the same as 'make doxygen' (trivial).
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@278 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-04-12 18:52:45 +00:00
Stefan Reinauer
8a8f3f4836 * fix typos in device_util.c
* drop double error in malloc.c
* add extra CFLAGS to reduce code size by 10%
* add more build time defines and use them in the LB table.

The LB_TAG_COMPILE_TIME is a partly duplicate of LB_TAG_BUILD,
as LB_TAG_BUILD contains both date and time. I left this in for
compatibility reasons.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@268 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-22 00:36:11 +00:00
Stefan Reinauer
0528863e20 This patch reshapes northbridge and southbridge inclusion. It selects
southbridge drivers in Kconfig.

* It includes initial superio code as well, but there is at least one
  error in the pnp_device.c/superio scenario left

* Fixed biosemu.c, vm86.c, pnp_device.c (sort of)

* Enable vm86 instead of x86emu per default for vga init for now. This
  makes VGA in qemu work. There might be a bug in x86emu or the compiler
  I am using. (gcc version 4.1.2 20070115 (prerelease) (SUSE Linux))

* Import isa-dma.c, keyboard.c and i8259.c from v2 /pc80, which was taken
  from LinuxBIOSv1 released from LANL under release LA-CC Number 00-34
  and using parts from the Linux kernel.

This patch makes vga and keyboard work in qemu. Yippie

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@260 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-13 09:31:08 +00:00
Uwe Hermann
fad0e246f4 Rename 'make doc' to 'make doxy' (and 'make doxygen').
Instead, we now use 'make doc' to generate the PDF doc/design/newboot.pdf.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@252 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-12 11:46:33 +00:00
Stefan Reinauer
9c67ea60b7 Make the LinuxBIOS build output look a lot like the stuff people
are used to from the Linux kernel.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@243 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-11 17:55:16 +00:00
Uwe Hermann
b3f3126478 Consistently use 'printf' instead of 'echo' to print stuff to
the console.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@224 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-09 00:41:23 +00:00
Stefan Reinauer
a8c461ba91 * correct off by one error in lib/lar.c
* correct LINUXBIOS_EXTRA_VERSION if it's empty in .config
* enable warnings for breaking strict aliasing

trivial.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@208 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-07 01:05:35 +00:00
Uwe Hermann
cb997b0095 This adds the well-known defines to build.h.
It explicitly clears LANG for each call, so the date and version strings
all follow the C locale, instead of the user's locale settings.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@204 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-06 15:02:50 +00:00
Uwe Hermann
54bfbf97e5 Various cosmetic fixes (trivial).
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@200 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-06 05:08:31 +00:00
Uwe Hermann
474e9c7761 Move util/Doxyfile.LinuxBIOS to util/Doxyfile.LinuxBIOS, so that
everything in util/ has its own subdirectory (trivial).

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@199 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-05 23:35:54 +00:00
Uwe Hermann
2b695fb8b6 Put output files into build/ instead of lbobj/ (trivial).
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@198 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-05 23:24:36 +00:00
Stefan Reinauer
689a938ca6 Let 'make distclean' remove the .xcompile file if it exists (trivial).
The previous commit had a typo (xconfig instead of xcompile). I did that a
couple of times, too.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@195 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-05 22:10:01 +00:00
Uwe Hermann
42fbf747a4 Let 'make distclean' remove the .xconfig file if it exists (trivial).
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@194 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-05 22:01:41 +00:00
Uwe Hermann
022cd22f5d Various tiny cosmetic fixes (trivial).
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@192 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-05 21:34:08 +00:00
Uwe Hermann
ff7df4f7ad Add cross compilation support and simplify the far to complex serial
code (This goes hand in hand, as some parts of serial were hardcoded
to one architecture until now)

* include/uart8250.h: add TTYSx defines that are used in
  multiple places. formerly part of arch/x86/serial.c.
  Drop init_uart8250 (unused)
* lib/uart8250.c: drop arch/x86/config.h usage
  Drop init_uart8250 (unused)
* arch/powerpc/Kconfig, arch/x86/Kconfig: add CONFIG_ARCH to
  contain the directory name under LinuxBIOSv3/arch/
* arch/x86/console.c: drop some dead code. Drop hardcoded config.h values.
  use generic uart8250.h header
* arch/x86/cachemain.c: Drop hardcoded config.h values. Still use hardcoded
  ROM size for now. (To be changed later)
* arch/x86/config.h: dropped, no longer needed
* arch/x86/serial.c: factor out generically used defines to uart8250.h
* Makefile: use mainboard architecture instead of target architecture to choose
  include path.
  Read .xcompile if available (configure replacement).
  Create build.h with compile time and version.
* util/xcompile/xcompile: new file. Search for supported cross compilers
  linkers, assemblers (and potentially supported compiler flags etc)
  This is a very slick configure replacement.
* util/dtc/Makefile: fix Makefile for cross compilation

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@190 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-05 21:14:21 +00:00
Stefan Reinauer
2bf728bfe0 Add three new options:
- EXPERIMENTAL - enable experimental/incomplete code/boards
 - EXPERT - enable expert/developer options
 - LOCALVERSION - set a string to append to the LinuxBIOS version

Mark BOARD_EMULATION_QEMU_POWERPC and CONSOLE_USB as experimental for now.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@184 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-04 23:47:47 +00:00
Uwe Hermann
60dd8e3ff1 Add support for generating Doxygen-documentation via 'make doc'.
The output is in HTML format and will be stored in the doxygen/html
directory. You can enable more output formats (latex, RTF, ...)
in the config file, util/Doxyfile.LinuxBIOS.

The current config options seem pretty reasonable to me, but we can
adapt them further to our needs, if required.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@171 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-02 15:03:02 +00:00
Stefan Reinauer
49d253d009 add feature "make V=1" for verbose build as requested by Ron. (trivial)
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@154 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-27 21:43:56 +00:00
Ronald G. Minnich
5274be0191 Add an emulation northbridge for the 440bx. The emulation is necessary
because not all emulators get the ram size registers right, or so we
hear. 

This northbridge is still incomplete. We are not just copying the v2
one, as we are trying to undo the various hacks that crept in over the
years, due to limitations in the v2 device model. Just look at the
i440bx in v2 and you can see what I mean. We are working to find a
better way to get the job done than those hacks. They are just too
confusing for people to follow. 

add an include for the northbridge makefile into the qemu Makefile. 
Re-order the includes in arch/x86/Makefile so we can pick up .o files
from other places. Add a STAGE2_CHIPSET_OBJ for objects defined in those
makefiles included in mainboard. 

Current issues: the enable_dev function for the i440bx is not getting
called. Enable_dev should be renamed to phase3_setup or something that
actually means something. The name as it is is totally useless.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@138 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-27 03:39:36 +00:00
Stefan Reinauer
6b86ee6c96 some dependencies fixes.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@132 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-26 13:59:35 +00:00
Uwe Hermann
d977facd0a Silence warnings and beautify build output. We might want to turn on more
warnings for developing/debugging, but not for the default LinuxBIOS build.

These are purely cosmetic changes, no build process changes (trivial).

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@126 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-26 02:15:40 +00:00
Stefan Reinauer
950845543b fix make xconfig
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@120 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-25 16:00:21 +00:00
Stefan Reinauer
ff6ca16f4a add distclean target
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@117 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-25 13:36:37 +00:00
Stefan Reinauer
b19bf330cf * add config options for serial port and speed
* add license header to console/vtxprintf.c and arch/x86/serial.c
* clean out dead code from console/vtxprintf.c
* adapt arch/x86/serial.c to CONFIG_ stuff
* actually include config.h in CFLAGS

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>




git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@104 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 13:55:28 +00:00
Stefan Reinauer
281cd76b38 * cleanup/refactor makefiles.
* remove some warnings

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@95 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 12:19:25 +00:00
Stefan Reinauer
0c11caa5e0 fix a warning, clean up code and makefiles
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@94 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 11:51:32 +00:00
Stefan Reinauer
b4a7dad494 Clean up nasty dtc warnings
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@87 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 10:13:24 +00:00
Stefan Reinauer
9c4c15c5ac Clean up Makefiles
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@86 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 09:54:10 +00:00
Stefan Reinauer
ef81173a39 * drop objdir/srcdir
* seperate vsprintf to a seperate file as it was in v2.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@83 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 09:20:15 +00:00
Stefan Reinauer
28d001e0f5 Small fix for Ron.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@72 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-22 19:19:41 +00:00
Stefan Reinauer
16a3503d0d clean up the build system.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@71 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-22 19:12:14 +00:00
Stefan Reinauer
c275218a89 Add a first bit of a framework. Builds the following parts, in
accordance to the newboot document:

* reset vector (16 bytes)
* vpd (240bytes)
* boot block (8k - 256b)
* lar archive (256-8 k)

The boot block is kind of simple, still. It enables pmode, car, and
starts looking for an initram module in the lar archive.

Note: This doesnt do much at the moment,
as gas seems to produce buggy code in init.S.

Take this as a suggestion of how it might work and please provide
patches fixing it and bringing it into shape.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@62 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-01-29 22:09:50 +00:00
Stefan Reinauer
2b2e9376fe * small Makefile cleanups
* add config.h so the Ron's latest changes build.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@60 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-01-26 19:33:03 +00:00
Ronald G. Minnich
3b79d32caf This is an incredibly long commit message, but I want it in here as I
expect to hear about this change. Note that Stefan and I have discussed
this change and feel it is at least worth trying. 

Also, please be aware that this change is backed by a
lot of experience with LinuxBIOS users and usage of the last 7 years. 

First I detail changes, then I detail why. 


Major changes for the new config system. 
Selection of object files, and variable setting, is now controlled by
Kconfig. 

There is only one dts now. It is in the mainboard file. It may later 
move to the target file -- we will see. 

The dts is in two parts, seperated by %%. The first part is a 
fairly standard dts, and the dtc will automatically generate a device 
tree from it. The device tree is composed of generic structures. These 
structures are identical to those of the old V2 device tree. All the 
hierarchy and parent/child/sibling relationships appear to be correctly
generated. This means that all the v2 code will work without change. 

For each node in the tree, if the node has a  property named 'config', 
then the dtc will generate a reference to a structure and an include
directive for a path -- much as in the old Config tool. 

Example: here is a fragment of a dts
==========
north {
        config = "northbridge,intel,i440bx";
};

%%

struct northbridge_intel_i440bx_config north = {
        .whatever = 1;
};
===========

The dtc will create:
#include <northbridge/intel/i440gx/config.h>
struct northbridge_intel_i440bx_config north = {
        .whatever = 1;
};

struct device dev_north {
        .chip_ops = &northbridge_intel_i440bx_ops;
        .chip_info = &north;

        .
        .
        .
};

So the programmer specifies the tree structure in dts form, indicates
which devices have a config entry, and sets up the C code for the
config. I have worked with this and am finding it very easy to use. I
think this is the way to go. Plus, we are getting rid of most of the 
include hell of the old Config system. 

Note that the config node is OPTTONAL! If you do not set it then no
structure usage/include will occur. 

WHY? 
Here is my setup for v3. I think this is good. I like it and am
finding it easy to work with.

Basically, the old config system combined makefile generation, tree
generation, and chip struct initialization in one file -- config.lb.

What we need are four things:
1. selection of .c files to build the bios with
2. the device tree -- this is built with generic structures defined in
include/device/device.h
3. The per-chip structures, usually defined in, e.g.,
northbridge/intel/i440bx/chip.h
4. setting of variables such as baud rate, etc.

Again, this was all done in Config.lb, spread all over the place, like this:
config chip.h
object superio.o

This was hard for people. So we moved the makefile stuff out into the
Kconfig system. This change eliminates (1) and (4) above.

OK, what's left? Well, with our plans from last October, we had device
object model tree stuff, AND still had chip struct initialization in
one file. (2) and (3) above. This is tough, because I was fighting the
mapping of DTS stuff to the C code. It was getting just as ugly as the
old Config.lb. I have been struggling with this for months and it just
wasn't going anywhere.

But it's way too hard to set up the device tree by hand -- I've tried
it. OTOH, it's really easy to set up the per-chip stuff by hand --
I've tried that too. I did a search via:
find ~/src/LinuxBIOSv2/src/ -name chip.h -print
and looked at them all. These files are really simple. There's no
reason to get too tricky, as there is nothing worth getting tricky
about. The problem is the device tree, not these simple chip info
structs.

So, here's the solution.

The ONLY dts is in the mainboard directory. There is no equivalent of
Config.lb in the south, north, cpu, all that stuff any more. The
Kconfig and Makefile in those directories replaced the build-related
functions of Config.lb.-- (1) and (4) above.  The only thing left was
chip.h anyway (3) above.

But how can we express the settings in chip.h via the DTS? IT's been
very hard to get this going.

So, here is the trick. The dts in the mainboard directory divides into
two parts. The first part is the standard dts. The second part is the
C code. They are seperated, as in lex and yacc, with a %%.

Here is the dts for qemu (note that the cpus keyword is still not
right, and maybe this structure needs to change; i'm not that worried
about that too much, just the big picture I'm discussing here). Also,
note I'm working with some new properties, e.g. pcipath and pcidomain
-- if these properties exist ina node, then I create initialized
structure members for them. Also see enabled and on_mainboard --
properties, but I catch them and use them.
/{
       cpus {
               config="mainboard,emulation,qemu-i386";
               emulation,qemu-i386@0{
                       enabled;
                       on_mainboard;
                       device_type = "cpu";
                       name = "emulation,qemu-i386";
                       pcidomain = "0";

                       /* the I/O stuff */
                       northbridge,intel,440bx{
                               pcipath = "0,0";
                               southbridge,intel,piix4{
                               };
                       };
               };
       };


};

%%
/* the user sets up these structs */
struct mainboard_emulation_qemu_i386_config cpus = {
               .nothing = 1,
};

You can see the device tree stuff at top. If a given node has a
property named 'config', then that means what the old 'chip' thing
meant in Config.lb. The dtc will generate an #include to pull in a
file with the path name specified in the config property. The dtc will
not set up the per-chip struct, but it will set up a pointer to a
struct when it sets up the device tree. Note that at bottom, it's up
to you to set up the initialized struct. But this was always the easy
part anyway. Instead of wacky pseudo-C like we had in config.lb, we
just do real C. It's easy. Here is what the dtc generates.

#include <device/device.h>
#include <device/pci.h>
#include <mainboard/emulation/qemu-i386/config.h>
struct device dev_southbridge_intel_piix4;
struct device dev_northbridge_intel_440bx;
struct device dev_emulation_qemu_i386_0;
struct device dev_cpus;
struct device dev_root;
extern struct chip_operations mainboard_emulation_qemu_i386_ops;
struct mainboard_emulation_qemu_i386_config cpus = {
.nothing = 1,
};

struct device dev_root = {
       .path =  { .type = DEVICE_PATH_ROOT },
       .links = 1,
       .link = {
               [0] = {
                       .dev = &dev_root,
                       .link = 0,
                       .children = &dev_cpus
               },
       },
       .bus = &dev_root.link[0],
};
struct device dev_cpus = {
       .chip_ops = &mainboard_emulation_qemu_i386_ops,
       .chip_info = &cpus,
       .links = 1,
       .link = {
               [0] = {
                       .dev = &dev_cpus,
                       .link = 0,
                       .children = &dev_emulation_qemu_i386_0
               },
       },
       .bus = &dev_root.link[0],
       .next = &dev_root,
};
struct device dev_emulation_qemu_i386_0 = {
       .enabled = 1,
       .on_mainboard = 1,
       .path = {.type=DEVICE_PATH_PCI_DOMAIN,.u={.pci_domain={ .domain = 0 }}}
,
       .links = 1,
       .link = {
               [0] = {
                       .dev = &dev_emulation_qemu_i386_0,
                       .link = 0,
                       .children = &dev_northbridge_intel_440bx
               },
       },
       .bus = &dev_cpus.link[0],
       .next = &dev_cpus,
};
struct device dev_northbridge_intel_440bx = {
       .path = {.type=DEVICE_PATH_PCI,.u={.pci={ .devfn = PCI_DEVFN(0,0)}}},
       .links = 1,
       .link = {
               [0] = {
                       .dev = &dev_northbridge_intel_440bx,
                       .link = 0,
                       .children = &dev_southbridge_intel_piix4
               },
       },
       .bus = &dev_emulation_qemu_i386_0.link[0],
       .next = &dev_emulation_qemu_i386_0,
};
struct device dev_southbridge_intel_piix4 = {
       .bus = &dev_northbridge_intel_440bx.link[0],
       .next = &dev_northbridge_intel_440bx,
};



This compiles just fine.

I think this is the right way to go, comments to me.

But, note, IT COMPILES. And it's simple. And, it will work with our
current device tree code!



Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@59 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-01-26 17:30:40 +00:00
Stefan Reinauer
f2000cd4ad * This patch renames remainders the arch i386 to x86.
* fix arch/io.h to use consistent types
* add compression code and start integration into Kconfig
* update to newer version of Kconfig, and rename some occurences
  of "Linux" to "LinuxBIOS"
* set up Make framework to create linuxbios.rom

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G Minnich <rminnich@lanl.gov>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@55 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-01-04 20:12:02 +00:00
Stefan Reinauer
fab2c44c60 hook up arch/ to the make process
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@53 f3766cd6-281f-0410-b1cd-43a5c92072e9
2006-12-04 10:06:20 +00:00
Stefan Reinauer
b68f47476f drop $MAINBOARD to simplify build process
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@51 f3766cd6-281f-0410-b1cd-43a5c92072e9
2006-12-04 01:01:36 +00:00
Stefan Reinauer
8e23c524b1 get the tree compiling. it does nothing yet.
These are all trivial changes.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@50 f3766cd6-281f-0410-b1cd-43a5c92072e9
2006-12-03 20:14:21 +00:00
Stefan Reinauer
31bb218552 big move orgy.
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Acked-by: Peter Stuge <peter@stuge.se>
Acked-by: Ronald G Minnich <rminnich@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@47 f3766cd6-281f-0410-b1cd-43a5c92072e9
2006-11-22 12:15:55 +00:00
Renamed from src/Makefile (Browse further)