Date: Mon, 18 Jan 2021 09:02:50 -0300 From: "Dr. Rolf Jansen" <freebsd-rj@obsigna.com> To: Emmanuel Vadot <manu@bidouilliste.com> Cc: freebsd-arm@freebsd.org Subject: Re: GENERICSD snapshot on a BBB has issues with loading the if_rtwn_usb module Message-ID: <9F0684B2-02EA-4647-BA02-8C6F80C421F7@obsigna.com> In-Reply-To: <20210118094510.48eee03d502ea25ab7d09938@bidouilliste.com> References: <47700631-2D94-4BA8-9707-9ADD70C99600@obsigna.com> <20210116184333.f91594f9c3505d2c588d9634@bidouilliste.com> <20210116184833.1a3182a20a2b6c727b64bb59@bidouilliste.com> <06F689CA-B781-4CEB-8F8A-B00FAC684DD3@obsigna.com> <20210117174539.43b55379e6a37881589616a8@bidouilliste.com> <DFBF17C9-935B-48E5-AD20-2F8265780FCD@obsigna.com> <20210117225539.c113796159735c5a3950c774@bidouilliste.com> <03F9A3D3-0A2B-4B09-9C8D-AAAF761C0F4C@obsigna.com> <20210118094510.48eee03d502ea25ab7d09938@bidouilliste.com>
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> Am 18.01.2021 um 05:45 schrieb Emmanuel Vadot <manu@bidouilliste.com>: > > On Sun, 17 Jan 2021 19:01:24 -0300 > "Dr. Rolf Jansen" <freebsd-rj@obsigna.com> wrote: > >>> Am 17.01.2021 um 18:55 schrieb Emmanuel Vadot <manu@bidouilliste.com>: >>> >>> On Sun, 17 Jan 2021 18:49:01 -0300 >>> "Dr. Rolf Jansen" <freebsd-rj@obsigna.com> wrote: >>> >>>>> Am 17.01.2021 um 13:45 schrieb Emmanuel Vadot <manu@bidouilliste.com>: >>>>> >>>>> On Sat, 16 Jan 2021 15:11:28 -0300 >>>>> "Dr. Rolf Jansen" <freebsd-rj@obsigna.com <mailto:freebsd-rj@obsigna.com>> wrote: >>>>> >>>>>>> Am 16.01.2021 um 14:48 schrieb Emmanuel Vadot <manu@bidouilliste.com <mailto:manu@bidouilliste.com>>: >>>>>>> >>>>>>> On Sat, 16 Jan 2021 18:43:33 +0100 >>>>>>> Emmanuel Vadot <manu@bidouilliste.com <mailto:manu@bidouilliste.com> <mailto:manu@bidouilliste.com <mailto:manu@bidouilliste.com>>> wrote: >>>>>>> >>>>>>>> On Sat, 16 Jan 2021 14:08:58 -0300 >>>>>>>> "Dr. Rolf Jansen" <freebsd-rj@obsigna.com> wrote: >>>>>>>> >>>>>>>>> I updated one of my BBB from an older 13-CURRENT (July 2020) to the latest 13-ALPHA1 snapshot from Jan, 14th ? GENERICSD-20210114-7ae27c2d6c4-255938. >>>>>>>>> >>>>>>>>> I had successfully employed an USB-WLAN dongle based on the RTL8188eu chipset. I only added the following into /boot/loader.conf: >>>>>>>>> >>>>>>>>> if_rtwn_usb_load="YES" >>>>>>>>> >>>>>>>>> By that all dependend modules were loaded automatically in a snap. With ALPHA1 this doesn?t work anymore. After hours of troubleshooting, I got it working by adding the following into /etc/rc.conf: >>>>>>>>> >>>>>>>>> kld_list="if_rtwn_usb" >>>>>>>>> >>>>>>>>> The "Loading kernel modules:" takes apprx. 4 seconds, however, then the USB-WLAN device is enumerated correctly and it is ready to use. This makes me think that this uncommon huge delay is the culprit. I checked this with some snapshot thats I had installed already. The issue seems to have been introduced together with the switch to GENERICSD. A GENERICSD 13-CURRENT from end of December showed this issue already, while a BBB-specific snapshot (from November 2020) that I had installed on another BBB works as before by loading the modules in /boot/loader.conf. >>>>>>>>> >>>>>>>>> I don't mind to load the modules by the way of the kld_list directive in /etc/rc.conf. However, the unusual long duration of loading the module and its dependencies might be an indication for a more fundamental issue. >>>>>>>>> >>>>>>>>> Please feel free to ask me for doing more tests. >>>>>>>>> >>>>>>>>> Best regards >>>>>>>>> >>>>>>>>> Rolf >>>>>>>> >>>>>>>> I can reproduce that on my netbooted BBB. >>>>>>>> The module is correctly loaded : >>>>>>>> >>>>>>>> Loading >>>>>>>> kernel... /boot/kernel/kernel text=0x1b4 text=0x68d638 text=0x1c84f0 >>>>>>>> data=0xb4070 data=0x0+0x258000 syms=[0x4+0xa5ab0+0x4+0x119fd4] Loading >>>>>>>> configured modules... /boot/kernel/if_rtwn_usb.ko text=0xb960 >>>>>>>> text=0x62c0 data=0x2cc+0x3b syms=[0x4+0x3570+0x4+0x293f] /boot/entropy >>>>>>>> size=0x1000 /etc/hostid >>>>>>>> size=0x25 Using DTB provided by EFI at >>>>>>>> 0x87f00000. Kernel entry at >>>>>>>> 0x96e00200... Kernel args: >>>>>>>> (null) >>>>>>>> ---<<BOOT>>--- >>>>>>>> >>>>>>>> But it isn't loaded anymore after booting : >>>>>>>> root@bbb:~ # kldstat >>>>>>>> Id Refs Address Size Name >>>>>>>> 1 1 0xc0000000 d23a8c kernel >>>>>>>> >>>>>>>> I don't think it has to do with the switch to GENERICSD, there is (at >>>>>>>> least shouldn't be) any difference between the old BBB image and the >>>>>>>> GENERICSD one. >>>>>> >>>>>> Yes, this might well be a coincidence. I do neither have the last BBB specific snapshot nor the first GENERICSD one for testing these against each other. >>>>>> >>>>>>> Just did a test on my OrangePi One (Allwinner H3 armv7 with 512MB of >>>>>>> RAM) and this is the same. >>>>>>> The problem seems to be module dependancy, loader only loads >>>>>>> if_rtnw_usb but doing a kldload also brings wlan.ko and rtwn.ko >>>>>> >>>>>> I can confirm this. And in addition loading the if_rtwn_usb.ko module and its dependcies manually also takes now significantly longer compared to a manual load on the BBB specific 13-CURRENT from November. Perhaps something has been changed in the dependency resolver. >>>>>> >>>>> >>>>> Fixed in 0f2434ea000e >>>>> >>>>> Thanks for reporting. >>>> >>>> Unfortunately, this did not resolve the issue. I updated my working copy with git pull and verified that your changes made it into my source tree. Then I built a new kernel and replaced the original ALPHA1 kernel from 2021-01-14 by this new one. The rtwn-modules are still not loaded by the if_rtwn_usb_load="YES" directive in /boot/loader.conf. >>>> >>>> Best regards >>>> >>>> Rolf >>> >>> You need to update loader.efi on the ESP partition. >> >> Please excuse my ignorance. Do I need to build world for this? Then where is the newly build loader.efi? >> >> Best regards >> >> Rolf > > It's part of buildworld yes but you can rebuild it with : > (cd stand/ && make buildenv TARGET_ARCH=armv7 BUILDENV_SHELL="make > clean all -sj4") > > Then locate loader_lua.efi in the obj directory and place it in the > ESP (the fat16/fat32 partition) as efi/boot/bootarm.efi This resolved the issue. Thank you very much and best regards Rolfhome | help
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