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Tobias Diedrich 982190d5f1 pcengines/apu1: Remove unused smbus.asl
The smbus.asl operation regions prevent the Linux i2c driver (i2c_piix4)
for this chipset from claiming the ioport ranges and thus it fails to
load.

The methods defined in smbus.asl are not used in the DSDT and also don't
exist in the DSDT of the vendor firmware.

In particular due to the following check in i2c-piix4.c will fail unless
acpi_enforce_resources=no is explicitly set on the Linux kernel
parameters:
  if (acpi_check_region(piix4_smba, SMBIOSIZE, piix4_driver.name))
          return -ENODEV;

Depending on kernel options the only error message printed is

  ACPI Warning: SystemIO range 0x0000000000000B00-0x0000000000000B07 conflicts with OpRegion 0x0000000000000B00-0x0000000000000B0B (\SMB0) (20150410/utaddress-254)
  ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver

However since it does not implement a standard interface there is no
native ACPI driver for smbus.asl.

Change-Id: Id8401e8b36f0e2412d490a92c20540a04d853125
Signed-off-by: Tobias Diedrich <ranma+coreboot@tdiedrich.de>
Reviewed-on: http://review.coreboot.org/10539
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2015-06-14 23:31:11 +02:00
3rdparty 3rdparty/blobs: Move submodule marker forward 2015-06-11 19:14:58 +02:00
Documentation Remove empty lines at end of file 2015-06-08 00:55:07 +02:00
payloads libpayload: Rename Config.in -> Kconfig 2015-06-12 02:42:43 +02:00
src pcengines/apu1: Remove unused smbus.asl 2015-06-14 23:31:11 +02:00
util bimgtool: initialize data header 2015-06-12 23:16:01 +02:00
.gitignore gitignore: Have multiple crossgcc versions 2015-05-25 21:26:02 +02:00
.gitmodules 3rdparty/vboot: Add vboot 2015-05-05 22:49:34 +02:00
.gitreview add .gitreview 2012-11-01 23:13:39 +01:00
COPYING update license template. 2006-08-12 22:03:36 +00:00
MAINTAINERS MAINTAINERS: grab build system responsibility 2015-05-22 22:47:03 +02:00
Makefile fix doxy target in root Makefile 2015-06-07 02:51:47 +02:00
Makefile.inc update_image: add all CBFS_PREFIX files to cbfs 2015-06-09 20:31:17 +02:00
README Update README with newer version of the text from the web page 2011-06-15 10:16:33 +02:00
toolchain.inc build system: move compiler runtime determination to xcompile 2015-06-04 20:01:45 +02:00

README

-------------------------------------------------------------------------------
coreboot README
-------------------------------------------------------------------------------

coreboot is a Free Software project aimed at replacing the proprietary BIOS
(firmware) found in most computers.  coreboot performs a little bit of
hardware initialization and then executes additional boot logic, called a
payload.

With the separation of hardware initialization and later boot logic,
coreboot can scale from specialized applications that run directly
firmware, run operating systems in flash, load custom
bootloaders, or implement firmware standards, like PC BIOS services or
UEFI. This allows for systems to only include the features necessary
in the target application, reducing the amount of code and flash space
required.

coreboot was formerly known as LinuxBIOS.


Payloads
--------

After the basic initialization of the hardware has been performed, any
desired "payload" can be started by coreboot.

See http://www.coreboot.org/Payloads for a list of supported payloads.


Supported Hardware
------------------

coreboot supports a wide range of chipsets, devices, and mainboards.

For details please consult:

 * http://www.coreboot.org/Supported_Motherboards
 * http://www.coreboot.org/Supported_Chipsets_and_Devices


Build Requirements
------------------

 * gcc / g++
 * make

Optional:

 * doxygen (for generating/viewing documentation)
 * iasl (for targets with ACPI support)
 * gdb (for better debugging facilities on some targets)
 * ncurses (for 'make menuconfig')
 * flex and bison (for regenerating parsers)


Building coreboot
-----------------

Please consult http://www.coreboot.org/Build_HOWTO for details.


Testing coreboot Without Modifying Your Hardware
------------------------------------------------

If you want to test coreboot without any risks before you really decide
to use it on your hardware, you can use the QEMU system emulator to run
coreboot virtually in QEMU.

Please see http://www.coreboot.org/QEMU for details.


Website and Mailing List
------------------------

Further details on the project, a FAQ, many HOWTOs, news, development
guidelines and more can be found on the coreboot website:

  http://www.coreboot.org

You can contact us directly on the coreboot mailing list:

  http://www.coreboot.org/Mailinglist


Copyright and License
---------------------

The copyright on coreboot is owned by quite a large number of individual
developers and companies. Please check the individual source files for details.

coreboot is licensed under the terms of the GNU General Public License (GPL).
Some files are licensed under the "GPL (version 2, or any later version)",
and some files are licensed under the "GPL, version 2". For some parts, which
were derived from other projects, other (GPL-compatible) licenses may apply.
Please check the individual source files for details.

This makes the resulting coreboot images licensed under the GPL, version 2.