ng0 writes: > Kei Kebreau writes: > >> [ Unknown signature status ] >> >> ng0 writes: >> >>> ng0 writes: >>> >>>> Someone should update flashrom to 0.9.9. (https://www.flashrom.org/Flashrom/0.9.9) >>>> I tried and do not understand enough of flashrom to update the patch we need. >>> >>> Additionally we need to check what's different about GuixSD that this >>> happens: >>> >>> root@shadowwalker /home/ng0# flashrom -p internal -w libreboot_latest_stable.rom >>> flashrom v0.9.7-r1711 on Linux 4.7.0-gnu (x86_64) >>> flashrom is free software, get the source code at http://www.flashrom.org >>> >>> Calibrating delay loop... OK. >>> Error accessing high tables, 0x100000 bytes at 0x000000007dad6000 >>> /dev/mem mmap failed: Operation not permitted >>> Failed getting access to coreboot high tables. >>> ======================================================================== >>> WARNING! You seem to be running flashrom on an unsupported laptop. >>> Laptops, notebooks and netbooks are difficult to support and we >>> recommend to use the vendor flashing utility. The embedded controller >>> (EC) in these machines often interacts badly with flashing. >>> See the manpage and http://www.flashrom.org/Laptops for details. >>> >>> If flash is shared with the EC, erase is guaranteed to brick your laptop >>> and write may brick your laptop. >>> Read and probe may irritate your EC and cause fan failure, backlight >>> failure and sudden poweroff. >>> You have been warned. >>> ======================================================================== >>> Aborting. >>> Error: Programmer initialization failed. >>> >>> >>> >>> I value that GuixSD seems to be more protective than any other system in >>> that regard where I could just become root and run flashrom, but maybe >>> we need to make an exception for flashrom and similar software. >>> Booting into ubuntu-live and running a statically linked binary of >>> flashrom just made me flash libreboot stable. I want to do this from >>> within GuixSD. >> >> This is mentioned in Libreboot's documentation (top of the page here: >> https://libreboot.org/docs/install/index.html). The GuixSD Linux-libre >> kernel is configured with CONFIG_STRICT_DEVMEM enabled, which I presume >> Libreboot uses for software-based flashing. >> >> If you add linux to the list "use-package-modules" in your system >> configuration and add (kernel-arguments '("iomem=relaxed")) to your >> "operating-system" configuration, the flashing utility will work correctly. > > Oh, interesting. Thanks for the explanation. Do you think we should add > a pointer to this somewhere in the documentation, or add a link pointing > to this email thread? > I feel like this needs to be explained or be visible somewhere at our > side. > I agree. It should probably be mentioned in the "System Configuration" section of the manual. I would take me some time to write it up, as my schedule is just starting to calm itself and I have no experience with texinfo, so if someone else picked it up before me, I wouldn't complain. > I think I want to keep this feature, and reconfigure the system only for > updating libre/coreboot. > I agree here, too. > Thanks You're welcome! :-)