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Diffstat (limited to 'docs/future/gnutoo_fallback_patch')
| -rw-r--r-- | docs/future/gnutoo_fallback_patch | 182 |
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diff --git a/docs/future/gnutoo_fallback_patch b/docs/future/gnutoo_fallback_patch new file mode 100644 index 0000000..50af779 --- /dev/null +++ b/docs/future/gnutoo_fallback_patch @@ -0,0 +1,182 @@ +<GNUtoo-irssi> I documented it +<GNUtoo-irssi> but I should update the page +<GNUtoo-irssi> somehow it works without any but one of my extra patches +<GNUtoo-irssi> but it has 1 small issue +<phcoder-1creen> GNUtoo-irssi: do you need review on those? I think that sth like it could save me countless external reflashs +<GNUtoo-irssi> phcoder-1creen: well, most of them are unnecessary now +<GNUtoo-irssi> 1 patch is usefull only for improving code readability of existing coreboot code +<GNUtoo-irssi> 1 patch is only changing the reboot count of the fallback mecanism +<GNUtoo-irssi> beside that I see nothing remaining +<GNUtoo-irssi> but I can check again +<GNUtoo-irssi> I have to do it now +<GNUtoo-irssi> The documentation is on the wiki +<GNUtoo-irssi> caveats: +<GNUtoo-irssi> 1) sometimes the x60 reboots twice, +<GNUtoo-irssi> for instance if you run poweroff, then let it power down, and as soon as it seems powered down, you press the power button +<GNUtoo-irssi> in that case it will do a reset +<GNUtoo-irssi> 2) suspend/resume and userspace needs some handling, I've systemd units for booting only, but not for suspend/resume +<GNUtoo-irssi> but you can do it by hand +<GNUtoo-irssi> config MAX_REBOOT_CNT +<GNUtoo-irssi> <tab>int +<GNUtoo-irssi> <tab>default 1 +<GNUtoo-irssi> that's what I added in src/mainboard/lenovo/x60/Kconfig +<GNUtoo-irssi> before I had a patch to make it selectable it in Kconfig, +<GNUtoo-irssi> that is to say the user enter the max reboot count he wants +<GNUtoo-irssi> I think the global default is 3 +<GNUtoo-irssi> Then I've some other interesting patches +<GNUtoo-irssi> I wonder if they're acceptable +<GNUtoo-irssi> one patch is for adding etc/grub.cfg from Kconfig +<GNUtoo-irssi> Use case: the user builds once, he do ./build/cbfstool ./build/coreboot.rom add -n etc/grub.cfg -f grub.cfg -t raw +<GNUtoo-irssi> but he re-do make +<GNUtoo-irssi> and forgett to re-add grub.cfg +<GNUtoo-irssi> it's just a convenience +<GNUtoo-irssi> (he could do it with a script too) +<GNUtoo-irssi> *he/she +<GNUtoo-irssi> I guess the user is a she in english? +<GNUtoo-irssi> en french it's a he +<GNUtoo-irssi> I've also a flashrom patch to submit +<GNUtoo-irssi> phcoder-1creen: "it could save me countless external reflashs" => that was exactly my use case +<GNUtoo-irssi> There are some other interesting stuff that could extend the use case: +<GNUtoo-irssi> there is a flash log for the chromebooks +<GNUtoo-irssi> example use case: you go to a conference in the USA, you are in the plane +<GNUtoo-irssi> you then continue developing there, you reflash etc... +<GNUtoo-irssi> but then you need the log of the failed boot somehow +<GNUtoo-irssi> the flash log (which is in coreboot but require CONFIG_CHROMEOS or something like that) could help with that second use case +<GNUtoo-irssi> Else the logs in RAM + a watchdog could also do the trick +<GNUtoo-irssi> *hardware watchdog +<GNUtoo-irssi> so that second approach of the second use case would just require some modifications related to cbmem +<GNUtoo-irssi> they may already be there, because I'm way out of the loop +<GNUtoo-irssi> I'll make a list of the interesting patches I have locally +<GNUtoo-irssi> and look at gerrit too +<GNUtoo-irssi> btw, is there some easy infrastructure work to do? +<GNUtoo-irssi> like something that can be done on the side +* ttyS3 has quit (Ping timeout: 264 seconds) +<GNUtoo-irssi> The x60[s/t], T60(with intel GPUs), are mostly complete, the main issue remaining is merging that improved GPU init code +<GNUtoo-irssi> fallback/ is mostly merged but that one patch I was talking about +<GNUtoo-irssi> then I guess the ACPI part was merged +<GNUtoo-irssi> I'm unsure about the IRDA +<GNUtoo-irssi> I mostly test on x60t nowadays +<GNUtoo-irssi> (my t60 has a nasty bug with ctrl+d, probably ec related) +<GNUtoo-irssi> I've also to look about the security of the I/Os +<GNUtoo-irssi> (like what's on the dock connector) +<GNUtoo-irssi> there is also the license issue of the microcodes inside the headers +<GNUtoo-irssi> I'll add all that in the wiki +<phcoder-1creen> GNUtoo-irssi: did you test digitizer? +<GNUtoo-irssi> yes +<GNUtoo-irssi> works well with libreboot 6 beta3 patches on top of coreboot git +<GNUtoo-irssi> I use it often +<GNUtoo-irssi> with xournal mainly +<GNUtoo-irssi> I've been in a local shop and I've found a compatilble wacom pen: it has: +<GNUtoo-irssi> touch, button(right click), eraser +<GNUtoo-irssi> all do work +<GNUtoo-irssi> the pen is not the x60 pen, but it does work fine +<phcoder-1creen> digitizer patches are already in +<GNUtoo-irssi> The screen's directional keys the its middle key work +<GNUtoo-irssi> yes +<GNUtoo-irssi> I'll update soon +<GNUtoo-irssi> I'll probably sumarize the patch I've left in the wiki +<GNUtoo-irssi> and update that fallback page +<GNUtoo-irssi> phcoder-1creen: is the IRDA supposed to work? +<phcoder-1creen> GNUtoo-irssi: 5243 +<phcoder-1creen> T60, rght? +* KidBeta has quit (Quit: My MacBook Pro has gone to sleep. ZZZzzz…) +<GNUtoo-irssi> x60 and x60t +<GNUtoo-irssi> oops +<GNUtoo-irssi> x60t and t60 +<GNUtoo-irssi> I'll test them together, I was trying lirc instead directlyt +<phcoder-1creen> 5242 for X60 +<GNUtoo-irssi> ok +<GNUtoo-irssi> thanks +<phcoder-1creen> GNUtoo-irssi: did you see x200 port? +<GNUtoo-irssi> yes +<GNUtoo-irssi> what CPU is it? +<GNUtoo-irssi> and what chipset? +<phcoder-1creen> gm45. Intel GPU +<GNUtoo-irssi> ok +<GNUtoo-irssi> I've looked at your new ports and related, +<GNUtoo-irssi> it probably cover the chipset I have in my N71JQ +<GNUtoo-irssi> but I probably don't have time to do the port anytime soon +<phcoder-1creen> gm45 was already covered by rk9 +<GNUtoo-irssi> yes +<GNUtoo-irssi> it's core 2 duo with the first AMT in the NICs, right? +<GNUtoo-irssi> and 64bit? +<phcoder-1creen> it's 64bit. I can't tell anything about AMT. +<GNUtoo-irssi> so I guess that if someone unsolder his nic firmware flash, the AMT is gone? +<GNUtoo-irssi> ok +<GNUtoo-irssi> if so that's probably a good tradeoff +<GNUtoo-irssi> you get more recent laptops at the cost of unsoldering or blanking the NIC's flash +<phcoder-1creen> ME firmware is in the flash chip. There is information that on gm45 you can remove ME firmware without any consequences but I din't really try +<GNUtoo-irssi> assuming it's like with the old i945 laptops +<GNUtoo-irssi> ok, wow, nice +<GNUtoo-irssi> how fast is it in between the T60's and the Nehalem's laptops(x201) +<phcoder-1creen> roda rk9 runs without ME firmware AFACIT +<GNUtoo-irssi> ok +<GNUtoo-irssi> about roda and so on, there isn't a lot of infos on the rugged laptops +<GNUtoo-irssi> I guess that nobody still test on them +<phcoder-1creen> No. But the list of connectors they have is truly impressive. As is battery capacity and heaviness. +<GNUtoo-irssi> indeed +<GNUtoo-irssi> it probably has lot of interesting peripherals too, like GPS, 3g modem(how is it connected?) and so on +<GNUtoo-irssi> for the heavyness, it's a way to make geeks become like rambo? +<GNUtoo-irssi> s/geeks/geeks and nerds +<phcoder-1creen> 3g modems are optional. I guess it's minipcie slot. +<phcoder-1creen> BTW x200 has 3 minipcie slots +<GNUtoo-irssi> wow +<phcoder-1creen> (not counting exprecsscard) +<GNUtoo-irssi> ok +<GNUtoo-irssi> that permits to have 2 wifi cards... +<phcoder-1creen> if driver can handle it, sure. When I tried with 2 intel cards, intel drivers and networkmanager got confused. +<GNUtoo-irssi> (ath9k/ath5k have some difficulties when creating multiples interfaces when WPA is involved) +<GNUtoo-irssi> ok +<phcoder-1creen> 3rd minipcie was intended for UWB. +<GNUtoo-irssi> well, I have multiples cards easily here +<GNUtoo-irssi> I never had a problem with non-intel cards +<phcoder-1creen> network manager will still get confused +<GNUtoo-irssi> example: ath9k + ath9k_htc => both interfaces appear in kde's network manager GUI +<GNUtoo-irssi> it was getting confused with intel cards and rfkill +<GNUtoo-irssi> (and I lacked the fimrware of the intel cards...so that added to the confusion) +<GNUtoo-irssi> Example use case: connect to 2 different AP on 2 different networks +<phcoder-1creen> yes network manager and multiple cards and rfkill resultsin confusion +<GNUtoo-irssi> my ath9k_htc is usb +<GNUtoo-irssi> so no hardware rfkill +<GNUtoo-irssi> btw, the mini-pcie connectors do export only pci? +<GNUtoo-irssi> do they export usb, and sata? +<GNUtoo-irssi> (and some other pins for rfkill, SIM card, and so on) + + + + + + + +<GNUtoo-irssi> ok +<GNUtoo-irssi> well, I must update the instructions +<GNUtoo-irssi> I was going trough the list of patches I had first +<GNUtoo-irssi> yes +<GNUtoo-irssi> but to a specific/personal page +<fchmmr> could you link me to the updated instructions? (when done) +<GNUtoo-irssi> well, I'll update them first +<GNUtoo-irssi> I was going trough my patches list before that +<GNUtoo-irssi> so I'll do that now +<fchmmr> So I gather that you basically reset the counter yourself after you boot (after typing grub password) +<fchmmr> and so, if you boot and the counter is higher, you know if someone tried to use it +<GNUtoo-irssi> yes, my systemd unit does it +<GNUtoo-irssi> *resets it +<GNUtoo-irssi> so it works like that: +<GNUtoo-irssi> the bootblock switch from normal/ to fallback if the counter is > CONFIG_MAX_REBOOT_CNT +<GNUtoo-irssi> if no normal/ is there it also switch to fallback/ +<GNUtoo-irssi> and then it increments the counter +<GNUtoo-irssi> (it's badly explained by me but you get the idea) +<GNUtoo-irssi> then my systemd units reset the counter to 0 once it's fully booted +<GNUtoo-irssi> that way if it fails, let's say at booting any linux kernel, then the user won't have bricked the laptop +<GNUtoo-irssi> (and the developer will have saved lot of time) +<GNUtoo-irssi> the issue is that I didn't reset the counter at resume +<GNUtoo-irssi> I should look how +<GNUtoo-irssi> but at least that makes it developer friendly if the user don't have suspend-resume covered yet +<GNUtoo-irssi> testing images is then a lot faster +<GNUtoo-irssi> and for "production", only fallback/ populated, but with the mecanism in place +<GNUtoo-irssi> that way he can test normal/ easily + + + + + |