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9fe185ae5f
This patch adds functions looking in the VPD for WiFi calibration
data, and if found, copying the calibration blobs into CBMEM.
Two possible key names templates are used: wifi_base64_calibrationX
and wifi_calibrationX, where X is replaced by the WiFi interface
number. Up to four interfaces can be provisioned.
The calibration data will be retrieved from CBMEM by the bootloader
and placed into the device tree before starting the kernel.
The structure of the WiFi calibration data CBMEM entry is defined
locally: it is a concatenation of the blob names and their contents.
Each blob is padded as necessary to make sure that the size divisible
by four.
To make sure that the exactly required amount of memory is allocated
for the CBMEM entry, the function first scans the VPD, caching the
information about the available blobs and calculating their combined
size.
Then the required size CBMEM entry is allocates and the blobs are
copied into it.
BRANCH=storm
BUG=chrome-os-partner:32611
TEST=when this function is called, and the VPD includes calibration
data blobs, the WIFI entry shows up in the list of CBMEM entries
reported by coreboot.
Change-Id: Ibe02dc36ff6254e3b9ad0a5bd2696ca29e1b2be3
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/225271
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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| configs | ||
| documentation | ||
| payloads | ||
| src | ||
| util | ||
| .gitignore | ||
| COMMIT-QUEUE.ini | ||
| COPYING | ||
| Makefile | ||
| Makefile.inc | ||
| PRESUBMIT.cfg | ||
| README | ||
| toolchain.inc | ||
------------------------------------------------------------------------------- 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.