@RobertCNelson I have two questions:
Did you have the error I refer to on the attached screen?
I think you attached the wrong screenshot…
You need to wait till dd is fully done running…
Regards,
@RobertCNelson Is not wrong screenshot, But look this:
I’m referring to this error below, which I always have and you don’t seem to have had.
I prepare my board on mfgtool2 before starting the procedures.
dfu 0 mmc 0
Couldn’t find part #1 on mmc device #0
DFU entities configuration failed!
(partition table does not match dfu_alt_info?)
dfu - Device Firmware Upgrade
Usage:
dfu <USB_controller> [list]
[list] - list available alt settings
It’s looking for a partition…
Just run:
ums 0 mmc 0
and
sudo dd if=core-image-base-imx7d-pico.sdimg of=/dev/sdb bs=1M ; sudo sync
Once to create the initial partition table…
Then start back at step 1…
Regards,
@RobertCNelson my board (thud Yocto 2.6) only accepts ipv6, not have Wifi, x11 (or other) not have apt-get (or opkg)
Post a bug report to the authors of that image, or add the pkg’s yourself.
Remember, that’s not my image, you should really contact the authors directly.
Regards,
@RobertCNelson I promise that this will be my last question for you about Yocto. About x11, opkg and wi-fi I will manage alone:
At the end of the link below, in the doubts Issues with systemd-networkd - General Discussions - Mender Hub (Issues with systemd-networkd) neither of the two guys managed to make me ping 192.168.1.1 and/or ping 8.8.8.8. Any help from you, however small, is welcome.
Not have ipv4 (with dhcp configuration):
dmesg | grep eth0
[ 1.770490] fec 30be0000.ethernet eth0: registered PHC device 0
[ 12.348166] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 14.408696] fec 30be0000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx
[ 14.417292] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
https://drive.google.com/drive/folders/1sqXvfolncaNiPhVSylMUyAtL92NlXQGR?usp=sharing
Wow, what a buggy Yocto image. I’ve also confirmed here, ipv4 doesn’t seem to be enabled out of the box…
root@imx7d-pico:~# ifconfig -a eth0
eth0 Link encap:Ethernet HWaddr 00:1F:7B:86:60:19
inet6 addr: fe80::21f:7bff:fe86:6019/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:327 errors:0 dropped:126 overruns:0 frame:0
TX packets:35 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:23449 (22.8 KiB) TX bytes:7112 (6.9 KiB)
Feel free to drop Yocto and switch back to Debian/Ubuntu.
Regards,
@RobertCNelson When I tried to use your u-boot (2020 version) I got the errors below, despite having registered the ip correctly (printenv ipaddr result 192.168.1.128). If I solve this, I think I will have ipv4 on my imx7d-pico/Yocto
No, that’s looking for a mac address…
Try setting:
setenv ethaddr 00:01:02:03:04:05
Regards,
@RobertCNelson What about this ? I will need mii commands in u-boot ? pls Where I can find u-boot with mii commands do see PHY
You have a few issues there… For one, you are running a different version of SPL and u-boot, which isn’t good…
You can setup extlinux with:
https://www.digikey.com/eewiki/display/linuxonarm/PICO-PI-IMX7#PICO-PI-IMX7-Setupextlinux.conf
Regards,
@RobertCNelson 1) Why I need extlinux in my case? 2) Why this u-boot version don’t have mii command ?
3) What about TFTP from server 192.168.1.1 our IP address is 192.168.1.103?
4) What about missing environment variable: pxeuuid?
Because that’s what mainline u-boot needs for YOU to tell it what to do, via config_distro_bootcmd
#define BOOT_TARGET_DEVICES(func) \
func(MMC, mmc, 0) \
func(USB, usb, 0) \
func(PXE, pxe, na) \
func(DHCP, dhcp, na)
#include <config_distro_bootcmd.h>
Boot order is:
So, add an extlinux file so the MMC will actually load your kernel…
Just booted my board:
=> version
U-Boot 2020.07 (Aug 19 2020 - 15:48:41 -0500)
arm-linux-gnueabihf-gcc (Linaro GCC 6.5-2018.12) 6.5.0
GNU ld (Linaro_Binutils-2018.12) 2.27.0.20161229
=> mii
Unknown command 'mii' - try 'help'
Enable the config option in u-boot, it defaults to not enabled…
Do you have a TFTP server running on 192.168.1.1? This is PXE Boot, you aren’t using this…
Regards,
`sudo mkdir -p /media/rootfs/boot/extlinux/`
`sudo sh -c ` `"echo 'label Linux ${kernel_version}' > /media/rootfs/boot/extlinux/extlinux.conf"`
`sudo sh -c ` `"echo ' kernel /boot/vmlinuz-${kernel_version}' >> /media/rootfs/boot/extlinux/extlinux.conf"`
`sudo sh -c ` `"echo ' append root=/dev/mmcblk2p1 ro rootfstype=ext4 rootwait quiet' >> /media/rootfs/boot/extlinux/extlinux.conf"`
`sudo sh -c ` `"echo ' fdtdir /boot/dtbs/${kernel_version}/' >> /media/rootfs/boot/extlinux/extlinux.conf"`
I need help to put extlinux because my partition table is different AND I don’t know my kernel version:(Yesterday I do this command with old U-boot 2018:
root@imx7d-pico:~# uname -r
uname -r
4.20.0-rc6-fslc+gbf414f71d713
@RobertCNelson I need help in screen below. I stay enable mii (in correct point) but I can’t use mii command in uboot cli. How to salve .config? Whats name? I need delete u-boot paste everytime or just redo the 5 commands below:
export CC=
pwd/gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-${CC}gcc --version
cd u-boot (existing folder)
- make ARCH=arm CROSS_COMPILE=${CC} distclean
- make ARCH=arm CROSS_COMPILE=${CC} pico-pi-imx7d_defconfig
- make ARCH=arm CROSS_COMPILE=${CC}
It’s stored as “.config”, name it what ever you want to name it…
make ARCH=arm CROSS_COMPILE=${CC} distclean
make ARCH=arm CROSS_COMPILE=${CC} pico-pi-mx7d_defconfig
make ARCH=arm CROSS_COMPILE=${CC} menuconfig
cp ./.config ../my-working-config
make ARCH=arm CROSS_COMPILE=${CC}
Regards,
This is going to be for you to figure out:
So let’s look at the basic extlinux.conf file:
label Linux 5.4.58-armv7-lpae-x33
kernel /boot/vmlinuz-5.4.58-armv7-lpae-x33
append root=/dev/mmcblk2p1 ro rootfstype=ext4 rootwait quiet
fdtdir /boot/dtbs/5.4.58-armv7-lpae-x33/
First Line:
label Linux 5.4.58-armv7-lpae-x33
This is just a label and dumped on bootup, it’s value is not used for anything.
2nd line:
kernel /boot/vmlinuz-5.4.58-armv7-lpae-x33
This is kernel “boot file”, it’s a link to a raw file, access by u-boot:
debian@arm:~$ ls -la /boot/
total 10372
drwxr-xr-x 5 root root 4096 Aug 19 21:08 .
drwxr-xr-x 21 root root 4096 May 10 20:17 ..
-rw-r--r-- 1 root root 192123 Aug 19 21:08 config-5.4.58-armv7-lpae-x33
drwxr-xr-x 3 root root 4096 Aug 19 21:08 dtbs
drwxr-xr-x 2 root root 4096 Aug 19 21:08 extlinux
drwxr-xr-x 2 root root 4096 May 10 20:17 uboot
-rwxr-xr-x 1 root root 10404352 Aug 19 21:08 vmlinuz-5.4.58-armv7-lpae-x33 <- kernel file
3rd line:
append root=/dev/mmcblk2p1 ro rootfstype=ext4 rootwait quiet
This is our bootarg’s appended to the default cmdline:
debian@arm:~$ cat /proc/cmdline
root=/dev/mmcblk2p1 ro rootfstype=ext4 rootwait quiet
debian@arm:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
mmcblk2 179:0 0 3.6G 0 disk
└─mmcblk2p1 179:1 0 3.6G 0 part / <- Root Driver
mmcblk2boot0 179:256 0 2M 1 disk
mmcblk2boot1 179:512 0 2M 1 disk
4th line:
fdtdir /boot/dtbs/5.4.58-armv7-lpae-x33/
This is the directory containing all our device tree’s:
debian@arm:~$ ls -alh /boot/dtbs/5.4.58-armv7-lpae-x33/ | grep pico
-rw-r--r-- 1 debian debian 47K Aug 19 21:04 imx7d-pico-hobbit.dtb
-rw-r--r-- 1 debian debian 47K Aug 19 21:04 imx7d-pico-pi.dtb
So it’s going to be you to convert your Yocto sytem to use extlinux.conf for bootup.
But feel free to switch to Debian or Ubuntu at any time:
Regards,
@RobertCNelson Based on this link: https://patchwork.kernel.org/patch/10066323/ I can put wifi in my imx7d-pico board. But, every time I restart I have to give these three commands below:
1 ) wpa_passphrase test 12345678 > /etc/wpa_supplicant.conf
2) wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf -D nl80211 &
3) udhcpc -i wlan0
I already put it in .bashrc and it didn’t work.
Would you know how to solve this?