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4f78b18749
This code is the initial version of FUI for haswell and wtm2. The code is simplified from before in many ways. I've gotten rid of the opcode table, because it obscured meaning and I don't think it is needed any more. Register sets, mainly used for reset, are just lines of code -- not many of them. There are a bunch of not-yet-documented registers here; the VBIOS seemed to think they were necessary and testing shows they seem to be right. As a bit of added paranoia, we always include the VBIOS code as our emergency recovery path. You have to run it now anyways, so this is no regression from our current situation; and, if all goes well, in a week (or so), you'll never have to run it again, but like the Force and nose hair, it will be with you always. The code can return in three ways. The first, best way is success: panel is up and the VBIOS need not run. The second mode is that we tried to light up the panel but could not, for some reason, but will return with the panel partly up. In this case, it's ok not to power cycle the panel. The third, worst case, which will NEVER happen, ha ha, is that we have to turn the panel off and wait the required 600ms for it to cycle. Life sucks sometimes. This failure mode is in the 'hang on we're going to fix it' category now that we have ramstage in RW. The Big Goal here is to create something other coreboot ports can use as well. The guys doing the x60 report that the link FUI works, without too many mods, on that chipset, so it seems Intel is keeping things from changing too much over time. Also, again, please note: this and the next 3 versions will ALWAYS fail. The goal is to verify the correctness of the recovery path. The bizarre tab-space formatting in drm_dp_helper.h is from the original, as in i915_reg.h Change-Id: I6ecf454633029d185c29d470980b5a0f3114a8ce Signed-off-by: Ronald G. Minnich <rminnich@google.com> Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/3635 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> |
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| 3rdparty@e934f70a1a | ||
| documentation | ||
| payloads | ||
| src | ||
| util | ||
| .gitignore | ||
| .gitmodules | ||
| .gitreview | ||
| COPYING | ||
| Makefile | ||
| Makefile.inc | ||
| 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.