I just discovered a workaround to my original pvrsrvkm kernel panic.
1. bitbake core-image-weston
2. image SD card with core-image-weston-beaglebone-ai64.wic.xz
3. mount SD card in host and decompress the pvrsrvkm kernel driver:
cd /lib/modules/5.10.168+/extra
sudo xz --decompress pvrsrvkm.ko.xz
4. reboot device with updated SD card
(This is with kernel updated to 5.10.168-r111)
On Thu, Oct 5, 2023 at 11:09 AM Joel Winarske via lists.yoctoproject.org
<[email protected]> wrote:
> Nevermind on BeagleBoard-DeviceTree. I just compared the kernel and
> BeagleBoard-DeviceTree;
> they are at parity. BeagleBoard-DeviceTree is not needed. The thing
> that was throwing me off what the older kernel/dt.
>
> I'll submit a patch for rolling the kernel forward.
>
> On Thu, Oct 5, 2023 at 8:08 AM Joel Winarske via lists.yoctoproject.org
> <[email protected]> wrote:
>
>> I'm narrowing in on the issue.
>>
>> I have a BeagleBoard.org OS image release where I can see PowerVR
>> running, and PCIe (WiFi/BT) works:
>> * bbai64-emmc-flasher-debian-11.7-xfce-edgeai-arm64-2023-09-02-10gb.img
>> Rescue option 1 (default image panics when booting with PCIe populated):
>> [ 0.000000] Linux version 5.10.168-ti-arm64-r111 (voodoo@AM69-SK-32g-01)
>> (gcc (Debian 10.2.1-6) 10.2.1u3
>>
>> These images use a device tree from a different repo than the ti-kernel
>> repo:
>> kernel: https://github.com/beagleboard/linux.git
>> dt:
>> https://git.beagleboard.org/beagleboard/BeagleBoard-DeviceTrees
>>
>> Dumping the DT from Yocto linux-bb and BeagleBoard.org the output is not
>> the same.
>>
>> Proposed minimum changes:
>> * add option for BeagleBoard-DeviceTree
>> * update kernel versions in linux-bb
>> * update PowerVR version to match kernel/DT
>>
>> Thoughts?
>>
>> On Mon, Sep 25, 2023 at 11:56 AM Joel Winarske via lists.yoctoproject.org
>> <[email protected]> wrote:
>>
>>> Update on issue.
>>>
>>> I can boot a kirkstone core-image-base (headless) without any issue.
>>>
>>> Randolph at TI has indicated the panic is related to an outdated gpu
>>> definition in DT. The gpu DT def defines two power domains, only one is
>>> required. I have not yet successfully confirmed this change.
>>>
>>>
>>>
>>> On Wed, Sep 20, 2023 at 5:08 PM Joel Winarske via lists.yoctoproject.org
>>> <[email protected]> wrote:
>>>
>>>> Today's limited progress:
>>>>
>>>> 1. U-Boot from eMMC is used by default. Shipping devices have outdated
>>>> U-Boot.
>>>> 2. Rule out U-Boot, and use Yocto built U-Boot by pressing RST + BOOT,
>>>> wait, release RST, then release BOOT. Boot flow will use all boot bits
>>>> from the SD card with this approach.
>>>> 3. Update `linux-bb.org_git.bb` to use tip of tree:
>>>> # 5.10.168 version for 32-bit
>>>> SRCREV:armv7a = "0f40ca5e749e9176ad4ea30c68be4fb2340647db"
>>>> PV:armv7a = "5.10.168+git${SRCPV}"
>>>> BRANCH:armv7a = "5.10.168-ti-r71"
>>>>
>>>> # 5.10.168 version for 64-bit
>>>> SRCREV:aarch64 = "ac2750dbf3a3b9078feff995e6754d5c5f609c19"
>>>> PV:aarch64 = "5.10.168+git${SRCPV}"
>>>> BRANCH:aarch64 = "v5.10.168-ti-arm64-r110"
>>>>
>>>>
>>>>
>>>> Updating kernel has no impact on kernel panic:
>>>>
>>>> [ 6.621063] pvrsrvkm: loading out-of-tree module taints kernel.
>>>> [ 6.637510] PVR_K: 251: Device: 4e20000000.gpu
>>>> [ 6.642337] SError Interrupt on CPU0, code 0xbf000000 -- SError
>>>> [ 6.642339] CPU: 0 PID: 251 Comm: systemd-udevd Tainted: G
>>>> O 5.10.168+ #1
>>>> [ 6.642340] Hardware name: BeagleBoard.org BeagleBone AI-64 (DT)
>>>> [ 6.642341] pstate: 60000005 (nZCv daif -PAN -UAO -TCO BTYPE=--)
>>>> [ 6.642343] pc : _RGXReadBVNCFromReg.isra.0+0x20/0x140 [pvrsrvkm]
>>>> [ 6.642343] lr : RGXBvncInitialiseConfiguration+0x274/0x9c0
>>>> [pvrsrvkm]
>>>> [ 6.642344] sp : ffff8000143db740
>>>> [ 6.642345] x29: ffff8000143db740 x28: ffff8000091e4548
>>>> [ 6.642349] x27: 0000000000000000 x26: ffff8000143db7a8
>>>> [ 6.642351] x25: ffff0008132da000 x24: ffff000813c741a0
>>>> [ 6.642353] x23: 0000000000000000 x22: ffff8000091ed000
>>>> [ 6.642355] x21: ffff000813c74008 x20: ffff8000091947c0
>>>> [ 6.642357] x19: 0000000000000000 x18: ffff800009142e74
>>>> [ 6.642359] x17: 000000ffc0000000 x16: ffff8000091431e0
>>>> [ 6.642361] x15: ffff800009142e60 x14: ffff800009140dd0
>>>> [ 6.642363] x13: ffff80000914c124 x12: 0000000000000000
>>>> [ 6.642365] x11: ffff000813c74008 x10: 0000000000000020
>>>> [ 6.642367] x9 : 0000000000000000 x8 : 0000000000000024
>>>> [ 6.642369] x7 : 0000000000000000 x6 : ffff800012500000
>>>> [ 6.642371] x5 : ffff8000143db7b0 x4 : ffff8000143db7ac
>>>> [ 6.642373] x3 : ffff8000143db7a8 x2 : ffff8000143db7a4
>>>> [ 6.642375] x1 : 0000000000000000 x0 : ffff000813c74008
>>>> [ 6.642377] Kernel panic - not syncing: Asynchronous SError Interrupt
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>
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