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David Hendricks c3b0e29b43 veyron_danger: Turn on backlight enable before VCC_LCD
On current Danger boards, VCC_LCD is gated by BL_EN. Thus we
need to enable BL_EN in order to power on the display so that
we can read the EDID and set things up.

Later board revisions may change this ordering, but for now it
doesn't seem to be causing a significant issues (no noticable
"snow" or other corruption using Pepto display).

BUG=none
BRANCH=none
TEST=booted on Danger, saw dev mode screen come up

Change-Id: I70aab8c1f6da2d0fce310d59073026eef0f67821
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 1a918824e747600a2f3a88602320f4f563ce17b7
Original-Signed-off-by: David Hendricks <dhendrix@chromium.org>
Original-Change-Id: Iaf17cc4682bd3c46f62cba789e3ecf8d5a474362
Original-Reviewed-on: https://chromium-review.googlesource.com/266913
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/10089
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2015-05-05 09:56:35 +02:00
3rdparty@892a6976ba 3rdparty: move checkout marker forward 2015-04-14 01:09:51 +02:00
documentation documentation: define downstream data consumption rules 2015-04-07 00:20:13 +02:00
payloads libpayload: Guard PCI using code appropriately in XHCI driver 2015-05-04 22:21:17 +02:00
src veyron_danger: Turn on backlight enable before VCC_LCD 2015-05-05 09:56:35 +02:00
util kconfig: avoid using wordexp 2015-05-04 22:26:09 +02:00
.gitignore
.gitmodules
.gitreview
COPYING
Makefile make: avoid problems with mv aliases 2015-04-28 03:12:38 +02:00
Makefile.inc vboot: split class in library and stage 2015-04-30 15:39:53 +02:00
README
toolchain.inc vboot: split class in library and stage 2015-04-30 15:39:53 +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.