coreboot January 2022

coreboot@coreboot.org

25 participants
27 discussions

[Proposal] Drop support for Ice lake [unmaintained]
by Tim Wawrzynczak 30 May '22

30 May '22

Good day folks, In a recent change[0], it was proposed that we drop support for the Intel Ice Lake platform. The only mainboard supporting the platform was the Intel RVP, but as far as anyone knows, it appears the project never progressed past the initial silicon, and so the code is now unmaintained and also unused. Since Ice Lake is very similar to TGL & ADL, it poses a maintenance burden when dealing with Intel common code e.g., anything in src/soc/intel/common. According to [1], this should be announced in upcoming release notes first, and removal could happen in 6 months. Wondering if anyone has any thoughts on why we should keep it around, otherwise let's update the upcoming release notes to give the "official" notice that it will be dropped. Cheers, - Tim [0]https://review.coreboot.org/c/coreboot/+/60053 [1]https://doc.coreboot.org/releases/templates.html

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Open letter to Intel regarding the PSE on Elkhart Lake
by Zeh, Werner 09 May '22

09 May '22

Dear coreboot community. I guess the most of you have seen the tension that was introduced to the community once Intel started to enable the Programmable Service Engine on the new IOTG SoC called Elkhart Lake (for reference, please see [1]). One of the outcome of this difficulties was to ask Intel for open sourcing the PSE code in order to avoid a new blob being introduced to coreboot. I took this action item and reached out to Intel in this regard. As a result I have had two meetings with the responsible people at Intel and they started to look into this request. So as of now Intel is analyzing the code to understand what needs to be done to open source it. What has been mentioned by Intel to me is that up to now nobody else have ever requested this for the PSE. Furthermore Intel let me know that it would be easier to convince the management layer to spend work on open sourcing the code if there would be more people from different companies requesting the same. My first guess was: we can do this! Therefore I have drafted up an open letter which I would like share with all of you: https://openletter.earth/request-for-opening-the-source-code-for-the-pse-on- elkhart-lake-26bad82a The wording have now been reviewed for two days between different parties and I would like to keep it as it is in order to get it done in time. This is now the moment where you can raise your voice! Please have a look at the open letter and sign it if you agree with the terms and if you support this approach. The more people we get the higher are our chances to be visible as an open source community. And it would be really helpful if we could get this letter signed by companies, this will for sure increase the traction of this request. I will keep this letter in "signing" state until 2021-12-09 07:00 am German time. Once we are there I will hand it over to Intel. Thank you for your support in advance Werner [1] <https://review.coreboot.org/c/coreboot/+/55367> https://review.coreboot.org/c/coreboot/+/55367

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Question about compressed FIT payloads
by Krystian Hebel 02 May '22

02 May '22

Hello coreboot community, For our work on POWER9 coreboot port we were using Skiboot [1] packed into FIT payload. While it worked fine, we wanted to provide users with easier way of testing it on hardware. I believe it may be possible to modify only one of PNOR (fancy name for flash given by POWER people) partitions. In order to do this, we would have to fit whole CBFS into 512k (actually 1M including ECC, but that would require non-power-of-2 size), which should be doable with LTO and compressed payload. According to [2], whole file compression is not available for FIT payloads. I understand that this makes sense, thanks to this we can decompress/load individual parts of payload (e.g. kernel and initramfs) once, otherwise we would have to decompress it to read metadata first and then move code around in memory. However, FIT format doesn't hold information about uncompressed sizes of its components, required by decompressing functions in coreboot. Instead, their compressed sizes [3] are used to initialize output region sizes [4] and those are then passed to decompressors [5]. Only FDT has a workaround to this problem [6], and kernel's size is calculated in an arm64-specific way in [7]. On other architectures components (other than FDT) are partially decompressed until they run of of space, silently ignoring the rest. What should be "the proper way" of getting uncompressed size? I can think of the following options, listed in no particular order: 1. Extend hack used for FDT to other components, use it for all compressed parts. Arbitrary size multiplier may either waste some space potentially overlapping other component's memory range or not be enough in edge cases (e.g. mostly zeroed file). 2. For LZMA you may get decompressed size from the header, unfortunately this is not possible with LZ4. 3. Dry decompression just to check proper size - sounds too costly. 4. New properties for components' nodes in ITS file. May need changes in mkimage, haven't looked yet. Preferably shouldn't have to be manually written to ITS as that would be prone to error. While playing with mkimage, may add automatic compression, right now it expects already compressed files in ITS, although this can also be scripted. 5. Add more arch- and payload-specific parsing of images, as was done for arm64. This may require some kind of mark that a payload needs special handling (new CBFS attribute maybe?) 6. Enable whole file compression of FIT payloads, which results in juggling in RAM. 7. Mix of the above. For our current issue we can also load Skiboot from another PNOR partition (from where it is normally loaded by Hostboot [8] which we are basically substituting with coreboot) and manually create FDT for it. This would however break normal coreboot boot flow and we would like to avoid that. [1] https://github.com/open-power/skiboot [2] https://doc.coreboot.org/lib/payloads/fit.html#supported-compression [3] https://review.coreboot.org/plugins/gitiles/coreboot/+/refs/heads/master/sr… [4] https://review.coreboot.org/plugins/gitiles/coreboot/+/refs/heads/master/sr… [5] https://review.coreboot.org/plugins/gitiles/coreboot/+/refs/heads/master/sr… [6] https://review.coreboot.org/plugins/gitiles/coreboot/+/refs/heads/master/sr… [7] https://review.coreboot.org/plugins/gitiles/coreboot/+/refs/heads/master/sr… [8] https://github.com/open-power/hostboot -- Krystian Hebel Firmware Engineer https://3mdeb.com | @3mdeb_com

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ThinkPad T420 and FireWire chip on Linux
by Alesandar Metodiev 09 Apr '22

09 Apr '22

Hello, Recently I have decided to give a try to coreboot for first time and flashed my ThinkPad T420, but a few weeks ago I have swapped the USB controller on the back, next to the battery, with a FireWire/USB controller (40GAB5809-G200) from another T420. Nothing special, since some models have been shipped like this. The controller is no longer accessible on my laptop. It seems like it may have been detected as an "SD Host Controller" or not detected at all. I will probably have to remove the chip and compare the output of lspci and lshw. If nothing has changed, I will probably have to return the stock BIOS and compare the results again. I have also tried to load some of the firewire kernel modules manually with modprobe. The operating systems I have tested so far are Arch Linux and Xubuntu. I am willing to provide more useful information, boot into a fresh Windows install, flash the chip again or whatever else. Correct me if I am wrong, but if I go back to the stock BIOS, the next time I flash, I will have to disassemble the laptop again and otherwise I must be fine with flashing internally, right? Thanks

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Memtest 86+ fork
by Sameeruddin Shaik 03 Apr '22

03 Apr '22

Hi all, I wanted to work on below ticket https://ticket.coreboot.org/issues/184 Is there anyone working on it. Any inputs/hints would be appreciated. --sameer.

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Personal challenge | Ramp up on coreboot : Trials on aftermarket X58 motherboards.
by Master 15 Feb '22

15 Feb '22

Hello everyone, I hope you're doing fine I would like to do some trials to see if I may be able to support few boards I have cause they are aftermarket withoout EFI and without firmware updates and not working as I would like them to. (https://askubuntu.com/questions/1370496/cant-boot-latests-lives-for-install…) I really would not like to throw them... They are X58 chipset with ICH10 with Xeon Westmere on socket 1366 and SuperIO NCT5532D. (https://www.intel.com/content/dam/doc/datasheet/x58-express-chipset-datashe…) (https://www.intel.com/content/dam/doc/datasheet/io-controller-hub-10-family…) (https://datasheetspdf.com/pdf-file/1042365/novoTon/NCT5532D/1) I have the tooling to backup and restore the flash and already done that few time. I have built latest coreboot (4.14 using lenovo x201 config) with EDK2 firmware as payload (edk2-stable202108 NOOPT) successfully but nothing is happening after flash swap and power on. I have RS232 debug working at ttyS0 (at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A) From the original firmware, just after power on, even before any bip or display or keyboard light I see "Socket = 0" on serial, so the the original firmware is able to output to this serial very early. I read quite a lot of literature about coreboot, but still, I am not sure how to pursue now. Thanks in advance, Have a nice day, Best Regards, Mickaël.

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coreboot Release 4.16 targeted for around Feb 12
by coreboot org 07 Feb '22

07 Feb '22

Hi everyone, As you may recall, coreboot has now gone to a quarterly release cadence. That means that it's now time for the 4.16 release, which will happen around the weekend of Feb 12. If there's anything significant that you want to get in before the next release is done, please do that in the next week or so. I'll be asking for people to test any boards that they have available after the release is done, but it'd be very useful to test them now, before the release so that anything that's broken can be fixed before the release is finalized. Current stats since the 4.15 release: - Total Commits: 1266 - Average Commits per day: 15.09 - Total lines added: 302355 - Average lines added per commit: 238.83 - Total lines removed: 25937 - Total difference between added and removed: 276418 Static analysis: Our Coverity build has unfortunately been down for a bit as the build time went past its limit of 10 hours. The next build will run tonight, and the limit has been extended to allow for even longer build times. In addition to Coverity, we also run LLVM's Scan-build tool on every platform several times a week. You can see that scan information for each platform at https://www.coreboot.org/scan-build/ Thanks! Martin

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Installing coreboot with SeaBIOS
by bernd1-1＠web.de 06 Feb '22

06 Feb '22

Hi, *Supplement: I've noticed that the name of the USB stick is a Linux distribution so I assume I wrote a .iso or .img to it in the past what possibly changed partitions and/or file formats. How can I restore the stick back to "normal" with Ubuntu?* while copying the coreboot/SeaBIOS installation (folder coreboot) to a USB stick I got the following error message: Error with copying of >>usb_tcpm_v2_rev30_fuzz.c<<. With copying of the file to ... /coreboot/3rdparty/-chromeec/fuzz an error occurred. The file system doesn't support symbolic links Cancel | Skip all | Skip What can I do? Regards, Bernd

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915G support
by Sid_key 01 Feb '22

01 Feb '22

Hello, is 915G supported? Is it hard to implement support for Gigabyte 8i915md-g? Which motherboard dt take as base to adapt for it?

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EFI Payload and coreboot Debug Control
by Rao G 31 Jan '22

31 Jan '22

Hi All, Trying to pass data between EFI Payload and coreboot, my use case is when a setup token is enabled, the data should be read by coreboot and change the DEBUG options in coreboot In EFI Payload values in PcdDebugPropertyMask can be toggled to ON/OFFit Please shed some light onto it Thanks Rao

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coreboot January 2022