Date: Sun, 17 Jan 2021 19:01:24 -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: <03F9A3D3-0A2B-4B09-9C8D-AAAF761C0F4C@obsigna.com> In-Reply-To: <20210117225539.c113796159735c5a3950c774@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>
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> Am 17.01.2021 um 18:55 schrieb Emmanuel Vadot <manu@bidouilliste.com>:
>=20
> On Sun, 17 Jan 2021 18:49:01 -0300
> "Dr. Rolf Jansen" <freebsd-rj@obsigna.com> wrote:
>=20
>>> Am 17.01.2021 um 13:45 schrieb Emmanuel Vadot =
<manu@bidouilliste.com>:
>>>=20
>>> On Sat, 16 Jan 2021 15:11:28 -0300
>>> "Dr. Rolf Jansen" <freebsd-rj@obsigna.com =
<mailto:freebsd-rj@obsigna.com>> wrote:
>>>=20
>>>>> Am 16.01.2021 um 14:48 schrieb Emmanuel Vadot =
<manu@bidouilliste.com <mailto:manu@bidouilliste.com>>:
>>>>>=20
>>>>> 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:
>>>>>=20
>>>>>> On Sat, 16 Jan 2021 14:08:58 -0300
>>>>>> "Dr. Rolf Jansen" <freebsd-rj@obsigna.com> wrote:
>>>>>>=20
>>>>>>> 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.
>>>>>>>=20
>>>>>>> I had successfully employed an USB-WLAN dongle based on the =
RTL8188eu chipset. I only added the following into /boot/loader.conf:
>>>>>>>=20
>>>>>>> if_rtwn_usb_load=3D"YES"
>>>>>>>=20
>>>>>>> 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:
>>>>>>>=20
>>>>>>> kld_list=3D"if_rtwn_usb"
>>>>>>>=20
>>>>>>> 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.
>>>>>>>=20
>>>>>>> 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.
>>>>>>>=20
>>>>>>> Please feel free to ask me for doing more tests.=20
>>>>>>>=20
>>>>>>> Best regards
>>>>>>>=20
>>>>>>> Rolf
>>>>>>=20
>>>>>> I can reproduce that on my netbooted BBB.
>>>>>> The module is correctly loaded :
>>>>>>=20
>>>>>> Loading
>>>>>> kernel... /boot/kernel/kernel text=3D0x1b4 text=3D0x68d638 =
text=3D0x1c84f0
>>>>>> data=3D0xb4070 data=3D0x0+0x258000 =
syms=3D[0x4+0xa5ab0+0x4+0x119fd4] Loading
>>>>>> configured modules... /boot/kernel/if_rtwn_usb.ko text=3D0xb960
>>>>>> text=3D0x62c0 data=3D0x2cc+0x3b syms=3D[0x4+0x3570+0x4+0x293f] =
/boot/entropy
>>>>>> size=3D0x1000 /etc/hostid
>>>>>> size=3D0x25 Using DTB provided by EFI at
>>>>>> 0x87f00000. Kernel entry at
>>>>>> 0x96e00200... Kernel args:
>>>>>> (null) =
=20
>>>>>> ---<<BOOT>>--- =
=20
>>>>>>=20
>>>>>> But it isn't loaded anymore after booting :
>>>>>> root@bbb:~ # kldstat=20
>>>>>> Id Refs Address Size Name
>>>>>> 1 1 0xc0000000 d23a8c kernel
>>>>>>=20
>>>>>> 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.
>>>>=20
>>>> 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.
>>>>=20
>>>>> 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
>>>>=20
>>>> 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.
>>>>=20
>>>=20
>>> Fixed in 0f2434ea000e
>>>=20
>>> Thanks for reporting.
>>=20
>> 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=3D"YES" directive in /boot/loader.conf.
>>=20
>> Best regards
>>=20
>> Rolf
>=20
> 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
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