if we disable updater then then we can build SD card wic image. Updater for imx8 will need some work as it seems, which we expected.
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I got image (without updater) built for imx8qm-var-som
For a challange I said lets try with
YOE_PROFILE ?= "yoe-musl-systemd-wayland"
and it all came along nicely. Ofcourse I have patches for meta-freescale proposed already for merge.
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Great progress! Now, to figure out how load up an SD card for this thing …
Loaded yoe-simple-image wic file on a SD card and it boots:
Yoe Linux 2022.08 imx8qxp-var-som ttyLP3
imx8qxp-var-som login: root
root@imx8qxp-var-som:~#
Next, working on LVGL recipe for their demo app, and trying some other graphical stuff …
Build and installed yoe-kiosk-image, and weston/wayland is working. Also appears egl tests are working:
root@imx8qxp-var-som:~# export XDG_RUNTIME_DIR=/run
root@imx8qxp-var-som:~# export WAYLAND_DISPLAY=wayland-0
root@imx8qxp-var-som:~# weston-simple-dmabuf-egl
root@imx8qxp-var-som:~# weston-simple-egl
has EGL_EXT_buffer_age and EGL_EXT_swap_buffers_with_damage
302 frames in 5 seconds: 60.400002 fps
301 frames in 5 seconds: 60.200001 fps
The i.MX8X CPU I’m using here does not have a heatsink installed yet (it came with one). I’m not pushing it hard right now, and the case is warm – just under the threshold of being too hot to keep my finger on it for a long time – probably just under 50degC. MX8 devices will definitely need some thought in the thermal design, unlike the i.MX6UL which runs cool. Heatsinking to a metal case is probably a good option.
I have observed that all arm64 cores based CPUs run hotter compared to 32bit ones and I do agree a better heatsink mechanism would go long way.
VAR-SOM-MX8x support has been merged into yoe/master. @collinbrake give it a try and let us know how it goes. I’ve added instructions for flashing SD card above. Will work on the updater next so we can program eMMC.
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only have 4 cores on unit here:
The original image might still be in flash, you could try booting that and see if you see the same thing.
This is an interesting discussion:
Wifi is brcm
root@imx8qm-var-som:~# dmesg | grep brcm
[ 4.766997] brcmfmac: brcmf_fw_map_chip_to_name: using brcm/brcmfmac4339-sdio.bin for chip 0x004339(17209) rev 0x000002
[ 5.006553] brcmfmac mmc2:0001:1: Falling back to user helper
[ 5.016806] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available(err=-11), device may have limited channels available
[ 5.027290] brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: Jun 26 2018 01:58:05 version 6.37.39.94 (r692107 CY)
root@imx8qm-var-som:~# lsmod
Module Size Used by
rfcomm 49152 16
hci_uart 20480 1
bnep 20480 2
brcmfmac 253952 0
cfg80211 307200 1 brcmfmac
brcmutil 16384 1 brcmfmac
bluetooth 372736 38 hci_uart,bnep,rfcomm
ecdh_generic 24576 1 bluetooth
cdns3 49152 0
xhci_hcd 135168 1 cdns3
ci_hdrc_imx 20480 0
ci_hdrc 61440 1 ci_hdrc_imx
phy_generic 16384 1
ehci_hcd 57344 1 ci_hdrc
udc_core 28672 2 cdns3,ci_hdrc
leds_gpio 16384 0
led_class 16384 1 leds_gpio
gpio_keys 20480 0
flexcan 24576 0
usbcore 245760 4 xhci_hcd,cdns3,ehci_hcd,ci_hdrc
fec 61440 0
usbmisc_imx 24576 1 ci_hdrc_imx
usb_common 16384 4 usbcore,cdns3,ci_hdrc,udc_core
mousedev 20480 0
can_dev 24576 1 flexcan
extcon_ptn5150 16384 0
ads7846 20480 0
spidev 20480 0
galcore 430080 23
ipv6 376832 50
autofs4 36864 0
Firmware
/lib/firmware/brcm
/lib/firmware/brcm/brcmfmac4339-sdio.txt
/lib/firmware/brcm/brcmfmac4339-sdio.bin
/lib/firmware/LICENCE.broadcom_bcm43xx
/lib/firmware/imx
/lib/firmware/imx/sdma
/lib/firmware/imx/sdma/sdma-imx7d.bin
/lib/firmware/imx/sdma/sdma-imx6q.bin
/lib/firmware/vpu
/lib/firmware/vpu/vpu_fw_imx8_dec.bin
/lib/firmware/vpu/vpu_fw_imx8_enc.bin
/lib/firmware/bcm
/lib/firmware/bcm/bcm4339.hcd
/lib/firmware/LICENSE.QualcommAtheros_ath10k
/lib/firmware/ath10k
ath10k firmware is unused I think on symphony board.
kernel modules
/lib/modules/4.14.98-imx8qm+g3405fb6/kernel/drivers/net/wireless/broadcom/brcm80211/brcmfmac/brcmfmac.ko
/lib/modules/4.14.98-imx8qm+g3405fb6/kernel/drivers/net/wireless/broadcom/brcm80211/brcmutil/brcmutil.ko
/lib/modules/4.14.98-imx8qm+g3405fb6/kernel/net/wireless/cfg80211.ko/lib/modules/4.14.98-imx8qm+g3405fb6/kernel/net/wireless/cfg80211.ko
Thanks for capturing this – so brcm is Broadcom …
The Yoe distribution now supports three of the Variscite i.MX8 SOMs:
- VAR-SOM-MX8
- VAR-SOM-MX8X
- VAR-SOM-MX8M-NANO (will be merged shortly)
Below is the nano running qtwebengine with Weston keyboard:
We can start weston with kiosk-shell. Follow these steps.
On a booted system
sed -e 's|^[#]shell=.*$|shell=kiosk-shell.so|g' /etc/xdg/weston/weston.ini
systemctl daemon-reload
systemctl restart weston
Now you can launch any app from ssh shell.
If you want to start an application and it will be in fullscreen mode.
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Hello Mr. Brake, hello Mr. Raj
We are developing using the VAR_SOM_MX8 (nxp iMX8QM based variscite SoM + Symphony carrier board, exactly the dev kit you are showing into the picture).
I have seen you are among the few people developing with such a SoM so I have some questions for you.
For you information, we are releasing a product based on a custom solution (designed by us) derived from the NXP dev Kit iMX8QM-MEK but we want to migrate on a solution derived from VAR_SOM_MX8 + Synphony. We are stack on the following topics:
- how to indentify and enable the UART port for debugging the scfw;
- how to indentify and enable the UART port for debugging the core0 real time firmware;
- how to indentify and enable the UART port for debugging the core1 real time firmware;
Do you have such an info?
we will thank you in advance in any case.
Best regards
FG
+39 335 8350919
Photo of the Variscite MX8 SOMs we support in the Yoe Distribution – small, medium, and large!
- VAR-SOM-Mx8M-NANO (NXP i.MX 8M Nano, starts at $44)
- VAR-SOM-MX8X (NXP iMX8X, starts at $79)
- VAR-SOM-MX8 (NXP iMX8 QuadMax / QuadPlus, starts at $134)
All of these SOMs have been run in a single Variscite Symphony development baseboard, as well as in custom hardware. The work we do on one complements the others.
