Hello everyone, in the following post I’m going to recap all that I’ve managed to accomplish during the GSoC of this year.
As a disclaimer: I plan to maintain these patches until they are fit to be mainlined or rejected altogether in case of design flaws.
libpayload: replace cbfs_media api with region_device api This patchset should be complete, I tested it quite thoroughly by using the API to update the bayou payload (separate patch). I'm still waiting on a review on this one so I suspect there will be some cause for nitpicks.
bayou: Adapt to the coreboot-v4 era Changed the design of the payload to make it integrate better with the current infrastructure of coreboot. The majority of the changes have been documented in the appropriate wiki entry. The patchset is complete and working.
console/serialice: Add SerialICE The patchset was started and the initial work was done by Patrick Rudolph. I picked it up from there, fixed the problems that it had and tried to get it in shape. It currently works as expected, waiting on more review/feedback.
serialice: update QEMU to version 2.5 serialice: adapt serialice to work with QEMU stable-2.5 In its current state this patchset produces a working build, all the functionality seems to be intact and SerialICE produces the same output as with the old implementation. There could be some unforeseen problems with the changes in the QEMU infrastructure and it could use a cleanup.
[WIP] src: replace device_t type with pnp/pci_defn_t This is one of the latest commits that I've worked on, it's still a work in progress but I plan to remove all the the improper uses of device_t and replace it with the appropriate type. It's probably gonna take a while and I suspect the patch is going to be massive. If anyone has any suggestion on how to handle this transition feel free to tell me.
tint: Fix tint and add Kconfig option The payload works as intended. Only nit is that maintaining a separate patch to apply to the tint code is tricky/messy.
lib/selfboot: Replace rdev_mmap_full() The code worked, even though it's been a while since I rebased the change to check for conflicts. Should be an easy fix anyway.
payloads: add support lz4 compression selfboot: add sequential lz4 payload decompression The functionality works as expected.
coreinfo: Add support to read timestamps cbmem: share additional time stamps IDs Code works as intended, the only thing missing are the commas that should split the timestamps in groups of 3 digits. I couldn't port that part since it relied on a recursive function that no longer worked.
elfwriter: Fix multi-phdrs ELFs parsing cbfstool: Require "-m ARCH" to extract payloads and stages cbfstool: Extract payload in ELF One of the oldest patchset that I wrote, took a while to get it right but it seems to be working wonderfully.
Below are a bunch of minor patches that I’ve written to fix the bugs that I’ve encountered while working on the patches above or browsing the source tree:
i945.h: fix #include path emulation/qemu-i440fx: add cmos.default file nvramcui: refactor code pc80/mc146818rtc.h: Replace leftover macro token lenovo/x60: add GPIOs initialisation before dock check serialice: update lint filters payloads: add Kconfig option for bayou libpayload: split "Drivers" config section in Kconfig bayou: delete pbuilder utility filo: Specify libpayload path cbfstool: Allow to easily build the individual tools
If you have any question regarding these patches you can find me on IRC (avengerf12).
I wanna conclude this post by expressing my gratitude towards the coreboot’s GSoC admins and mentors for the wonderful opportunity that they have given me and to the coreboot community for all the help and suggestions.