Commit graph

47 commits

Author SHA1 Message Date
Ronald G. Minnich
8b05b1556e I broke the build, but Stefan is getting on the train, and needs this
commit. adding support for tables.

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@129 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-26 09:52:02 +00:00
Ronald G. Minnich
cd4625560e add tables support to LinuxBIOS.
We have merged the plethora of include files into one. A given linuxbios
target architecture must support all the functions described therein. 
All the structs etc. in include/tables.h are known to be
architecture-independent. 

We hope this new layout is easier to folow than the old one. 

Todo: Remove the LGDT code from tables writing (how did THAT get in
there ;-) and put it somewhere sane; add OFW table support. We are going
to need some nice OFW table code. 

Also, the license headers should be correct in this commit. 

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@128 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-26 09:43:12 +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
Uwe Hermann
0322a3b582 Various typos, output beautifications and 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@125 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-26 01:38:12 +00:00
Uwe Hermann
b68d589126 s/linuxbios/LinuxBIOS/ in a number of places (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@124 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-26 01:19:39 +00:00
Stefan Reinauer
a49a9cea94 Various Kconfig fixes and some additional documentation.
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@121 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-25 16:27:17 +00:00
Ronald G. Minnich
7dd602be11 Simplify elfboot, add copyright. newelfboot.c will be removed in a
minute. 

This code has been tested; we are booting filo from flash in qemu at
this point. 

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@114 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-25 10:42:53 +00:00
Stefan Reinauer
5a65718dcc clean up headers as requested. drop some dead code.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@111 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-24 17:03:53 +00:00
Ronald G. Minnich
326b94d572 This set of changes allows FILO to boot in bochs:
Press <Enter> for default boot, or <Esc> for boot prompt... timed out
boot: hdc1:/phase1 root=/dev/hdc1  console=ttyS0,115200
malloc_diag: alloc: 112 bytes (3 blocks), free: 16264 bytes (1 blocks)
malloc_diag: alloc: 128 bytes (4 blocks), free: 16248 bytes (1 blocks)
file_open: dev=hdc1, path=/phase1
find_ide_controller: PCI IDE #0 not found
IDE channel 1 not found
devopen: failed to open ide
malloc_diag: alloc: 112 bytes (3 blocks), free: 16264 bytes (1 blocks)
malloc_diag: alloc: 48 bytes (2 blocks), free: 16328 bytes (1 blocks)
boot: hdc1:/phase1 root=/dev/hdc1  console=ttyS0,115200

So we've just booted our first payload in V3!

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@110 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-24 07:41:22 +00:00
Ronald G. Minnich
98d3059a2d The newelfboot code is correctly loading filo.elf. It is running from
FLASH. It is far simpler than before. 

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@109 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 21:16:47 +00:00
Ronald G. Minnich
327a4432fe newelfboot.c. this elfboot is tremendously simplified so it can run out
of FLASH. Since it runs out of FLASH, we have removed the need for
bounce buffer support. that in turn rips out all kinds of stuff, so it
is now simpler. We're ripping out all the checksum stuff -- lar does
that. 

lar.c has some debug prints removed. 

elfboot.c has some mods, but elfboot.c is going away. 

cachemain.c has a few mods for using newelfboot. 

Makefile reflects these changes. 

Not tested, I'm going to bed though, so here you are.

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@108 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 19:53:11 +00:00
Stefan Reinauer
39a8f1f159 get rid of all warnings but one (lb table fake)
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@107 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 15:35:42 +00:00
Stefan Reinauer
cfa73bace2 our code grew quickly. Since stage0 carries the library for all the
other stages, give it 16k instead of 8

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




git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@106 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 14:04:39 +00:00
Stefan Reinauer
3fc4e990dc fix double checkin conflict
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>




git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@105 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 13:59:27 +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
Ronald G. Minnich
afeb4e0b90 Add declaration to cachemain.c.
Oddly, this error just appeared, due to clashing commits. 

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@103 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 13:52:28 +00:00
Ronald G. Minnich
08016c4ca8 Basic elfboot functionality is in now.
We're trying to avoid the bounce buffer mess, which is really complex, 
by running elfboot out of the boot block. This code includes a really 
dumb allocator in elfboot which may or may not work. It basically
allocates off the elfboot() stack. 

This builds, but elfboot is not tested. That's next. 
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@102 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 13:39:07 +00:00
Ronald G. Minnich
03a012f2e0 add the architecture dependent elfboot code.
call it something more useful than boot.c
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@100 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 12:37:56 +00:00
Stefan Reinauer
02a4d350c6 fix more 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@99 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 12:36:45 +00:00
Ronald G. Minnich
b08b26ebcb Add compute_ip_checksum to makefile
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@97 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 12:23:33 +00:00
Ronald G. Minnich
534f6d31be mods to elf.h to use arch/elf.h
Some updates to the docs, but these will change more. 
add memcmp. Crude implementation, but it really does not matter. 
add compute_ip_checksum.c
mods to elfboot. Thanks to our new design, BOUNCE BUFFERS ARE DEAD. Yee
ha!
updates to makefile

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@96 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 12:21:47 +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
791e590dea * rename devices to device for consistency
* fix malloc.c warnings
* add PCI_BUS_SEGN_BITS to pci.h


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



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@92 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 11:23:37 +00:00
Stefan Reinauer
15dfcd2198 * fix some license headers
* add generic lib.h header for lib/ prototypes
* fix some prototypes
* put back return value parsing of stage2

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




git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@91 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 11:03:56 +00:00
Ronald G. Minnich
01d7545b50 Set up default root device. Fix up printk stuff.
Fix up dts to set up ops struct member. Fix dts for qemu mainboard. 
We are getting past stage2 now, it is time for elfboot. 

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@88 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 10:38:22 +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
Ronald G. Minnich
c8ce9649ad Make sure to link stage 2 at 0x1000. We are now getting pretty far:
Phase 1: done
Phase 2: early setup ...
Phase 2: done
Phase 3: Enumerating buses...
dev_root missing 'ops' initialization
Allocating resources...
dev_root missing ops initialization
Enabling resources...
done.
Phase 6: Initializing devices...
Phase 6:Devices initialized

Now to fix up the device stuff. Once this is done, a linux kernel load
is next (i.e. elfboot)

NOTE: 0x1000 needs to become a config variable, usable in CODE and
Makefiles. 

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@85 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 09:33:33 +00:00
Ronald G. Minnich
d4c47470f0 Add the CAR disable code. It MUST be inline. Rather than a crufty
include, we just put it here. 

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@84 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 09:28:16 +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
Ronald G. Minnich
dd74fdac61 Pick a safer default for CacheBase -- not C segment.
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@81 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-23 07:15:58 +00:00
Ronald G. Minnich
61d24531e5 Fixes to get it to build.
This builds but dependencies need work; it takes a few 
make -k
passes :-)

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@80 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-22 22:44:03 +00:00
Stefan Reinauer
417311203a Diffs which get us to stage two.
It's slightly broken by the merge, but we want to get it in.
Will be fixed tomorrow.

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@79 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-22 22:09:10 +00:00
Stefan Reinauer
0850d0cad8 Architecture changes. This gets us through stage 2.
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@76 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-22 21:39:25 +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
Ronald G. Minnich
1492bdbd5c These changes get us past stage0, past stage1, and into the search for a
file in LAR called raminit. 

The intent is that stage0_i586.S would be common for just about all
stage0. It has no includes. We had to go with an ldscript.ld to deal
with the many bugs in binutils. Maybe someday this will change. 

Tested by Ron and Uwe in bochs with debugging. 

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


git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@68 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-02-14 17:08:15 +00:00
Uwe Hermann
aecc25a2e1 Remove unused dummy options, some 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@64 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-01-30 11:26:16 +00:00
Uwe Hermann
fb1793faca Add a license header where it was missing.
Use standard LinuxBIOS license header (trivial, no semantic changes).

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@63 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-01-30 11:10:39 +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
Ronald G. Minnich
e31e0a84c1 This now works to the point of creating (from dtc) a statictree.c.
compile fails; 

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


git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@57 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-01-24 20:11:35 +00:00
Ronald G. Minnich
a65cfa9385 Start changing docs.
Trying to get dtc to compile correctly, getting errors from things I
don't understand. 
So this happens:
[rminnich@q LinuxBIOSv3]$ make
  CHK
/home/rminnich/src/bios/LinuxBIOSv3/include/linuxbios/version.h
building lzma
building initram
make: *** No rule to make target
`/home/rminnich/src/bios/LinuxBIOSv3/mainboard/"emulation/qemu-i386"/dts',
needed by `/home/rminnich/src/bios/LinuxBIOSv3/dtc.c'.  Stop.

Until such time as others beside Stefan and I are committing, I am
auto-acking.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@56 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-01-24 15:50:12 +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
Uwe Hermann
1fa5d301a6 Add missing license headers to some files, use standard LinuxBIOS license
header in some other files.

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



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@54 f3766cd6-281f-0410-b1cd-43a5c92072e9
2006-12-06 12:41:20 +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
b01a43ee71 get more infrastructure in place
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@52 f3766cd6-281f-0410-b1cd-43a5c92072e9
2006-12-04 09:47:58 +00:00