Re: New branch 5.4-2.1.x-imx for linux-fslc


Philippe Schenker
 

On Mon, 2020-08-10 at 16:10 +0200, Andrey Zhizhikin wrote:
Hey Philippe,

On Mon, Aug 10, 2020 at 1:52 PM Philippe Schenker
<philippe.schenker@...> wrote:
On Mon, 2020-08-10 at 12:42 +0200, Andrey Zhizhikin wrote:
Hello Philippe,

On Mon, Aug 10, 2020 at 12:01 PM Philippe Schenker via
lists.yoctoproject.org
<philippe.schenker=toradex.com@...> wrote:
Hi,

Toradex is currently working on integrating the new NXP release
'L5.4.24_2.1.0'. For this we created a new kernel branch '5.4-
2.1.x-
imx'
based on NXP's kernel 'imx_5.4.24_2.1.0'.
We already merged patches from stable linux 5.4.47 into '5.4-
2.1.x-
imx'.
This is great news! I was half the way of working on the same
update,
but now since you have the merge done - I can take your version
instead.

@Otavio: I sincerely ask you if you could place the branch '5.4-
2.1.x-
imx' that resides currently in my private github account:

https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fphilschenker%2Flinux-fslc%2Ftree%2F5.4-2.1.x-imx&;data=01%7C01%7Cphilippe.schenker%40toradex.com%7C1b2edaea486b43f0d2bf08d83d1a29be%7Cd99958660d9b42518315093f062abab4%7C0&amp;sdata=BZDTVKY%2BQJDwIgsBjAeRshdTw2i7Ksh0RjGtw92ZZHw%3D&amp;reserved=0
I'll grab this one to test on i.MX8M Mini EVK now and try it out.
I've tried to build the branch from your repo with latest master of
meta-freescale, and saw couple of issue with imx8mmevk machine:

1. imx-gpu-sdk recipe fails to build, as it requires the header which
is most probably missing in the kernel:
make: *** No rule to make target
'/development/projects/master/build-output/work/cortexa53-crypto-
mx8mm-fsl-linux/imx-gpu-sdk/5.0.2-r0/recipe-
sysroot/usr/include/bits/sys_errlist.h',
needed by
'build/Yocto/obj/Release/source/FslBase/Bits/ByteArrayUtil.o'.
Stop.
I guess any user-space stuff need updating to versions that NXP provides
with BSP 'L5.4.24_2.1.0'.

OE-core updated glibc which is the provider of 'sys_errlist.h' so maybe
that is the reason for build failure?


2. Kernel panics on the startup, there is something related to FEC
driver:
[ 0.994893] Unable to handle kernel paging request at virtual
address 0000000000023779
[ 1.002814] Mem abort info:
[ 1.005614] ESR = 0x96000004
[ 1.008668] EC = 0x25: DABT (current EL), IL = 32 bits
[ 1.013983] SET = 0, FnV = 0
[ 1.017040] EA = 0, S1PTW = 0
[ 1.020178] Data abort info:
[ 1.023062] ISV = 0, ISS = 0x00000004
[ 1.026901] CM = 0, WnR = 0
[ 1.029872] [0000000000023779] user address but active_mm is
swapper
[ 1.036262] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[ 1.041833] Modules linked in:
[ 1.044891] CPU: 2 PID: 1 Comm: swapper/0 Not tainted
5.4.47+g1310c126dd1e #1
[ 1.052022] Hardware name: FSL i.MX8MM EVK board (DT)
[ 1.057073] pstate: 80000005 (Nzcv daif -PAN -UAO)
[ 1.061868] pc : fec_probe+0x280/0x1340
[ 1.065703] lr : fec_probe+0x80/0x1340
[ 1.069449] sp : ffff80001003baf0
[ 1.072761] x29: ffff80001003baf0 x28: 0000000000000000
[ 1.078072] x27: 0000000000000000 x26: ffff80001114d9b8
[ 1.083383] x25: 0000000000000000 x24: ffff000076090000
[ 1.088694] x23: ffff00007dc03bd8 x22: ffff000076404c10
[ 1.094005] x21: ffff000076404c00 x20: ffff0000762f8000
[ 1.099316] x19: ffff0000762f87c0 x18: 0000000000000020
[ 1.104626] x17: 0000000000000001 x16: 0000000000000019
[ 1.109937] x15: ffff000076090470 x14: 0000000000000000
[ 1.115248] x13: ffff000076090000 x12: 0000000000000000
[ 1.120559] x11: 0101010101010101 x10: 7f7f7f7f7f7f7f7f
[ 1.125870] x9 : 49fffeff06fefeff x8 : 7f7f7f7f7f7f7f7f
[ 1.131180] x7 : 01fefefefefefeff x6 : 8080808080808000
[ 1.136491] x5 : 0080808080808080 x4 : 0000000000000000
[ 1.141802] x3 : ffff80001114ea48 x2 : 0000000000000000
[ 1.147113] x1 : ffff000076090000 x0 : 0000000000023779
[ 1.152424] Call trace:
[ 1.154871] fec_probe+0x280/0x1340
[ 1.158361] platform_drv_probe+0x50/0xa0
[ 1.162371] really_probe+0xd8/0x410
[ 1.165946] driver_probe_device+0x54/0xe4
[ 1.170042] device_driver_attach+0xb4/0xc0
[ 1.174225] __driver_attach+0x80/0x114
[ 1.178060] bus_for_each_dev+0x6c/0xbc
[ 1.181895] driver_attach+0x20/0x30
[ 1.185469] bus_add_driver+0xfc/0x1e0
[ 1.189218] driver_register+0x74/0x120
[ 1.193052] __platform_driver_register+0x44/0x50
[ 1.197756] fec_driver_init+0x18/0x20
[ 1.201506] do_one_initcall+0x50/0x190
[ 1.205343] kernel_init_freeable+0x194/0x22c
[ 1.209700] kernel_init+0x10/0x100
[ 1.213188] ret_from_fork+0x10/0x18
[ 1.216765] Code: 2a1303e2 b940afe1 b900b3f3 17ffff75 (b9400000)
[ 1.222866] ---[ end trace 31a90d201ff67100 ]---
[ 1.227505] Kernel panic - not syncing: Attempted to kill init!
exitcode=0x0000000b
[ 1.235161] SMP: stopping secondary CPUs
[ 1.239085] Kernel Offset: disabled
[ 1.242572] CPU features: 0x0002,2000200c
[ 1.246579] Memory Limit: none
[ 1.249634] ---[ end Kernel panic - not syncing: Attempted to kill
init! exitcode=0x0000000b ]---
Thanks for pointing this out, I could reproduce the issue and checked.
There were still two commits missing. One revert that we believe is not
applicable to downstream fec_main.c
This one also solved the issue. The other IPU commit was also missing.
Now it works on our side. Can you confirm?

Philippe


Have you ported the patch [1] from upstream? Without it - the
latest
master build would fail (it is needed for binutils-2.35).
Hi Andrey,

We were building binutils-2.34 so didn't notice this issue. I've
cherry-
picked the patch you mentioned.
That's great, I've synced up the tree to your latest commit and the
perf build build went through.

Philippe
into the repository

https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FFreescale%2Flinux-fslc&;data=01%7C01%7Cphilippe.schenker%40toradex.com%7C1b2edaea486b43f0d2bf08d83d1a29be%7Cd99958660d9b42518315093f062abab4%7C0&amp;sdata=qkHhXyQfUuvj1C9u3FbPaqrmx6TsszVHpiRi9azUyR0%3D&amp;reserved=0

Thanks and best regards,
Philippe
[1]:
https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Ftorvalds%2Flinux.git%2Fcommit%2F%3Fid%3D39efdd94e314336f4acbac4c07e0f37bdc3bef71&;data=01%7C01%7Cphilippe.schenker%40toradex.com%7C1b2edaea486b43f0d2bf08d83d1a29be%7Cd99958660d9b42518315093f062abab4%7C0&amp;sdata=gDSV0ochz6GpX1DQ6EU%2Bn6BtpvDVBNbgPkWGWEqNegY%3D&amp;reserved=0

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