[Buildroot] Cape firmware in /lib/firmware

[Frank Hunleth]

Hi Spenser,

On Tue, Jul 9, 2013 at 11:22 AM, Spenser Gilliland
<spenser at gillilanding.com> wrote:
> Hi Frank,
>
> I'm respond to the mailing list as many people could find this
> information useful.
>
>> I just double checked whether the eMMC would work when the cape dtbos
>> were not compiled into the kernel (I was also trying out your patches
>> too), and it's not looking like it is working.
>>
>> Just to make sure that we're doing the same thing, I assume that you have:
>>
>> # CONFIG_FIRMWARE_IN_KERNEL is not set
>>
>> in your kernel config. Do you have any other changes? As far as I can
>> tell, the dtbos are installed correctly.
>
> Unfortunately, I have the CONFIG_FIRMWARE_IN_KERNEL set to y.  So, I
> am not actually performing the firmware loads as I had thought.  Thank
> you for pointing me towards this issue.
>
>> To be honest, I don't understand how eMMC is working for you if you
>> don't build cape-bone-2g-emmc1.dtbo into the kernel. It seems like the
>> firmware request just comes too early.
>>
>> Anyway, if it does work, I'd like to change my setup to more closely
>> mirror yours since having the dtbos not compiled into the kernel seems
>> like the right way to go.
>
> So, If I disable CONFIG_FIRMWARE_IN_KERNEL option and boot from the
> sdcard.  The following firmware loading is observed but only slot-5 is
> successfully loaded.

Ok. The output that I see is identical to what you posted, so at least
we're seeing the same thing.

I'm going to keep the firmware compiled into the kernel for a while
longer and then circle back after I make progress in other areas. As
far as I can tell, Debian doesn't include the dtbos in the kernel and
it works, so there must be a way to fix this.

Frank

>
> beaglebone login: [   61.502280] bone-capemgr bone_capemgr.8: failed
> to load firmware 'cape-bone-2g-emmc1.dtbo'
> [   61.510994] bone-capemgr bone_capemgr.8: loader: failed to load
> slot-4 BB-BONE-EMMC-2G:00A0 (prio 1)
> [   61.520998] bone-capemgr bone_capemgr.8: slot #5: Requesting
> firmware 'cape-boneblack-hdmi-00A0.dtbo' for board-name
> 'Bone-Black-HDMI', version '00A0'
> [   61.535117] bone-capemgr bone_capemgr.8: loader: check slot-6
> BB-BONELT-HDMIN:00A0 (prio 2)
> [   61.553375] bone-capemgr bone_capemgr.8: slot #5: dtbo
> 'cape-boneblack-hdmi-00A0.dtbo' loaded; converting to live tree
> [   61.565195] bone-capemgr bone_capemgr.8: slot #5: #4 overlays
> [   61.576715] platform 4830e000.fb: alias fck already exists
> [   61.596648] bone-capemgr bone_capemgr.8: slot #5: Applied #4 overlays.
> [   61.603577] bone-capemgr bone_capemgr.8: loader: done slot-5
> BB-BONELT-HDMI:00A0 (prio 1)
> [   61.612492] bone-capemgr bone_capemgr.8: loader: check slot-6
> BB-BONELT-HDMIN:00A0 (prio 2)
> [   61.625585] bone-capemgr bone_capemgr.8: loader: after slot-6
> BB-BONELT-HDMIN:00A0 (prio 2)
> [   61.634998] bone-capemgr bone_capemgr.8: slot #6: Requesting
> firmware 'cape-boneblack-hdmin-00A0.dtbo' for board-name
> 'Bone-Black-HDMIN', version '00A0'
> [   61.652387] bone-capemgr bone_capemgr.8: slot #6: dtbo
> 'cape-boneblack-hdmin-00A0.dtbo' loaded; converting to live tree
> [   61.664160] bone-capemgr bone_capemgr.8: slot #6: BB-BONELT-HDMIN
> conflict P8.45 (#5:BB-BONELT-HDMI)
> [   61.673749] bone-capemgr bone_capemgr.8: slot #6: Failed verification
> [   61.680499] bone-capemgr bone_capemgr.8: loader: failed to load
> slot-6 BB-BONELT-HDMIN:00A0 (prio 2)
>
> Thanks,
> Spenser
>
> --
> Spenser Gilliland
> Computer Engineer
> Doctoral Candidate



--
Frank Hunleth
Troodon Software LLC
http://troodon-software.com/