u-boot ethernet device not ready in time

Hi,
I try to make a netboot over tftp with statically assigned ip address. This is the configuration of bootcmd:

bootcmd=env set ipaddr 192.168.178.46; env set serverip 192.168.178.39; tftp 0x82000000 Image; tftp 0x88000000 imx.dtb;

after booting it shows following problem:

loading FDT from mmc 0 'imx8mp-qsxp-ml81-qsbase3-raspi-display.dtb'
MAC addr: 00:0c:c6:06:2d:dc
Net: eth0: ethernet@30bf0000
Hit any key to stop autoboot: 0
ethernet@30bf0000 Waiting for PHY auto negotiation to complete......... TIMEOUT !
ethernet@30bf0000: phy_startup() failed: -110
ethernet@30bf0000: eqos_start() FAILED: -110
ethernet@30bf0000 Waiting for PHY auto negotiation to complete.... done

this is as it seems because of not yet initialized ethernet device. As workaround I used a sleep 10, just in front of tftp command to give the ethernet device more time for initialization

question: is it possible to somehow programmatically test for available network device? something like if test is_eth_online then tftp ??

Thanks
Ivan

Ivan,

> bootcmd=env set ipaddr 192.168.178.46; env set
> serverip 192.168.178.39; tftp 0x82000000 Image;
> tftp 0x88000000 imx.dtb;
>
> question: is it possible to somehow
> programmatically test for available network
> device? something like if test is_eth_online then
> tftp ??

This is IMX u-boot so I am not sure if there is such command. In general, for any u-boot, you would do a few pings if you think the network is slow coming up. pinging the network will force it to come up. Like this,

env set initialize_net 'env set ipaddr 192.168.178.46; ping $serverip; sleep 1; ping $serverip;  sleep 1; ping $serverip; sleep 1;'
env set bootcmd 'env set ipaddr 192.168.178.46; run initialize_net; tftp 0x82000000 Image; tftp 0x88000000 imx.dtb;'

Note that you should do at least 2 pings.

There are other methods, such as using a for loop to ping until the network come up (ping successful). But I'm not sure this u-boot has supports for that syntax. Also, in modern u-boot, you have other means to check the network status.

Please post the output of the fowwoling in serial console:

ver
help

-bodhi
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Forum Wiki
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I did as you suggested with ping, but the problem is the early access of ethernet device. If I ping just after the boot I still get the same problem with negotiation. To test this I have set bootcmd to "env set ipaddr 192.168.178.46; ping 192.168.178.39" and reset. Here the output:

loading FDT from mmc 0:1 'imx8mp-qsxp-ml81-qsbase3.dtb'
MAC addr: 00:0c:c6:06:2d:dc
Net:   eth0: ethernet@30bf0000
Hit any key to stop autoboot:  0 
ethernet@30bf0000 Waiting for PHY auto negotiation to complete......... TIMEOUT !
ethernet@30bf0000: phy_startup() failed: -110
ethernet@30bf0000: eqos_start() FAILED: -110
ping failed; host 192.168.178.39 is not alive

I need something more low-level that accesses the state of ethernet device in a manner that I can just very simple use with something like test.


OUTPUT OF VER AND HELP:

QSXP U-Boot > ver
U-Boot 2020.04-5.10.9-1.0.0+gd3987c4f40 (Aug 24 2022 - 11:47:52 +0000)

aarch64-poky-linux-gcc (GCC) 11.2.0
GNU ld (GNU Binutils) 2.38.20220313

QSXP U-Boot > help
?         - alias for 'help'
base      - print or set address offset
bdinfo    - print Board Info structure
blkcache  - block cache diagnostics and control
bmp       - manipulate BMP image data
boot      - boot default, i.e., run 'bootcmd'
bootd     - boot default, i.e., run 'bootcmd'
booti     - boot Linux kernel 'Image' format from memory
bootm     - boot application image from memory
bootp     - boot image via network using BOOTP/TFTP protocol
clk       - CLK sub-system
clocks    - display clocks
cls       - clear screen
cmp       - memory compare
coninfo   - print console devices and information
cp        - memory copy
dcache    - enable or disable data cache
dhcp      - boot image via network using DHCP/TFTP protocol
dm        - Driver model low level access
echo      - echo args to console
editenv   - edit environment variable
env       - environment handling commands
eraseenv  - erase environment variables from persistent storage
exit      - exit script
ext2load  - load binary file from a Ext2 filesystem
ext2ls    - list files in a directory (default /)
ext4load  - load binary file from a Ext4 filesystem
ext4ls    - list files in a directory (default /)
ext4size  - determine a file's size
ext4write - create a file in the root directory
false     - do nothing, unsuccessfully
fatinfo   - print information about filesystem
fatload   - load binary file from a dos filesystem
fatls     - list files in a directory (default /)
fatmkdir  - create a directory
fatrm     - delete a file
fatsize   - determine a file's size
fatwrite  - write file into a dos filesystem
fdt       - flattened device tree utility commands
fstype    - Look up a filesystem type
fuse      - Fuse sub-system
go        - start application at address 'addr'
gpio      - query and control gpio pins
gpt       - GUID Partition Table
help      - print command description/usage
i2c       - I2C sub-system
icache    - enable or disable instruction cache
iminfo    - print header information for application image
itest     - return true/false on integer compare
lcdputs   - print string on video framebuffer
ln        - Create a symbolic link
load      - load binary file from a filesystem
loadb     - load binary file over serial line (kermit mode)
loads     - load S-Record file over serial line
loadx     - load binary file over serial line (xmodem mode)
loady     - load binary file over serial line (ymodem mode)
loop      - infinite loop on address range
ls        - list files in a directory (default /)
md        - memory display
mdio      - MDIO utility commands
mii       - MII utility commands
mm        - memory modify (auto-incrementing address)
mmc       - MMC sub system
mmcinfo   - display MMC info
mtest     - simple RAM read/write test
mw        - memory write (fill)
nfs       - boot image via network using NFS protocol
nm        - memory modify (constant address)
part      - disk partition related commands
ping      - send ICMP ECHO_REQUEST to network host
pinmux    - show pin-controller muxing
printenv  - print environment variables
random    - fill memory with random pattern
read      - Load binary data from a partition
regulator - uclass operations
reset     - Perform RESET of the CPU
run       - run commands in an environment variable
save      - save file to a filesystem
saveenv   - save environment variables to persistent storage
setcurs   - set cursor position within screen
setenv    - set environment variables
setexpr   - set environment variable as the result of eval expression
showvar   - print local hushshell variables
size      - determine a file's size
sleep     - delay execution for some time
source    - run script from memory
test      - minimal test like /bin/sh
tftpboot  - boot image via network using TFTP protocol
time      - run commands and summarize execution time
true      - do nothing, successfully
ums       - Use the UMS [USB Mass Storage]
usb       - USB sub-system
usbboot   - boot from USB device
version   - print monitor, compiler and linker version
videolink - list and select video link

This u-boot is quite new. And it has driver model.

Quote

dm - Driver model low level access

Run

dm tree

It should list the DM uclasses. And there might be a way to test the Enthernet uclass (i.e if it has been bound to a device).

Also, with slow network like this, you will need to do several pings before it is successful.

-bodhi
===========================
Forum Wiki
bodhi's corner (buy bodhi a beer)



Edited 1 time(s). Last edit at 04/18/2023 12:47AM by bodhi.