i.MX ProcessorsのトピックRe: Yocto build external firmware error

Yocto build external firmware error

Dhevan — Mon, 08 Feb 2021 12:11:01 GMT

Hi,

We are using imx8m mini evk board.

BSP Version - 5.4.24 linux bsp.

yocto compilation everything was successful but after flashed image file to emmc after booting we are getting error message.

NXP i.MX Release Distro 5.4-zeus eht3pt ttymxc1 eht3pt login: root [ 11.873939] audit: type=1006 audit(1609762368.660:2): pid=637 uid=0 old-auid=4294967295 auid=0 tty=(none) old-ses=4294967295 ses=1 res=1 root@eht3pt:~# root@eht3pt:~# [ 60.383197] imx-sdma 302c0000.dma-controller: external firmware not found, using ROM firmware [ 60.383352] imx-sdma 302b0000.dma-controller: external firmware not found, using ROM firmware [ 60.397676] imx-sdma 30bd0000.dma-controller: Direct firmware load for imx/sdma/sdma-imx7d.bin failed with error -2 [ 60.410759] imx-sdma 30bd0000.dma-controller: Falling back to sysfs fallback for: imx/sdma/sdma-imx7d.bin root@eht3pt:~# root@eht3pt:~# root@eht3pt:~# [ 64.479176] cfg80211: failed to load regulatory.db root@eht3pt:~# root@eht3pt:~# root@eht3pt:~# root@eht3pt:~# [ 121.823175] imx-sdma 30bd0000.dma-controller: external firmware not found, using ROM firmware

Firmware module added into yocto conf file.

Why we are getting above errors ?

Because of these error reboot also not happening.

Please help us to solve this issue.

Regards,

Vasu

Re: Yocto build external firmware error

ceggers1 — Mon, 08 Feb 2021 19:32:51 GMT

Hi,

please compile the i.MX SDMA driver as a kernel module (instead of static linking). For further explanation please see my existing answers to the same question.

regards
Christian

Re: Yocto build external firmware error

jimmychan — Wed, 10 Feb 2021 14:01:10 GMT

Thanks @ceggers1 ,

@Dhevan , this is the solution from ceggers1

https://community.nxp.com/t5/i-MX-Processors/imx6-linux-imx-sdma-firmware-load-failed-error/m-p/1193538

Re: Yocto build external firmware error

Dhevan — Thu, 11 Feb 2021 06:38:44 GMT

Hi Guys,

Thank for your reply.

Solution 2: Build the imx-sdma driver as a kernel module. At the time when the module is loaded, also the SDMA firmware file will be available.

I had followed above steps but getting same error.

Followed Steps :

bitbake linux-imx -c menuconfig
Drivers -> DMA Engine Support -> i.MX SDMA support [M]
bitbake linux-imx -f -c compile
bitbake core-image-minimal

root@eht3pt:~# [ 33.763442] VSD_3V3: disabling root@eht3pt:~# root@eht3pt:~# root@eht3pt:~# root@eht3pt:~# root@eht3pt:~# root@eht3pt:~# root@eht3pt:~# root@eht3pt:~# [ 64.483565] cfg80211: failed to load regulatory.db [ 66.531570] imx-sdma 302c0000.dma-controller: external firmware not found, using ROM firmware [ 66.531735] imx-sdma 30bd0000.dma-controller: external firmware not found, using ROM firmware [ 66.531778] imx-sdma 302b0000.dma-controller: Direct firmware load for imx/sdma/sdma-imx7d.bin failed with error -2 [ 66.531784] imx-sdma 302b0000.dma-controller: Falling back to sysfs fallback for: imx/sdma/sdma-imx7d.bin

Thanks & Regards,

Vasu

Re: Yocto build external firmware error

ceggers1 — Thu, 11 Feb 2021 07:29:16 GMT

Hi Vasu,

please check

The kernel config (zgrep SDMA /proc/config.gz)
The firmware file (should be located here: /lib/firmware/imx/sdma/sdma-imx7d.bin)

regards
Christian

Re: Yocto build external firmware error

Dhevan — Thu, 11 Feb 2021 09:53:27 GMT

Hi @ceggers1

The firmware file (should be located here: /lib/firmware/imx/sdma/sdma-imx7d.bin).

- bin file not present in the above location.

local.conf added

- linux-firmware
- firmware-imx

Anything else needs to add ?

Thanks & Regards,

Vasu

Re: Yocto build external firmware error

ceggers1 — Fri, 12 Feb 2021 18:24:35 GMT

Hi Vasu,

does the SDMA firmware file now exist on you file system. If it's still missing, you can download it here:

https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/imx/sdma

Do you still have firmware loading problems now?

regards,
Christian

Re: Yocto build external firmware error

Dhevan — Mon, 15 Feb 2021 05:51:12 GMT

Hi @ceggers1,

Manually copied into /lib/firmware/imx/sdma/ location.

Now not showing missing bin file.

root@eht3pt:~# [ 33.759426] VSD_3V3: disabling root@eht3pt:~# [ 64.706124] cfg80211: failed to load regulatory.db

Why above two line is printing.

How to solve above two line issue.

Thanks & Regards,

Vasu

Re: Yocto build external firmware error

Dhevan — Mon, 15 Feb 2021 05:55:35 GMT

Hi @jimmychan

@ceggers1 mentioned manually adding method.

I have added linux-firmware in yocto conf but sdma not added.

We are using imx8m mini evk board.

BSP Version - 5.4.24 linux bsp.

Which yocto stable version we need to use ?

Latest yocto version also having same issue ?

Thanks & Regards,

Vasu

Re: Yocto build external firmware error

jimmychan — Thu, 18 Feb 2021 01:58:52 GMT

Please try : bitbake core-image-minimal -f