Hello all. Having strange issues when using mkenvimage tool. I have generated uEnv.txt with three variables defined: var1, var2 and var3. And I am trying to load it into U-boot. I have done two different tests:
Test1 (null-terminated strings)
OUT=uEnv.txt echo -ne "var1=1\0" > $OUT echo -ne "var2=1\0" >> $OUT echo -ne "var3=1\0" >> $OUT echo -ne "\0" >> $OUT
mkenvimage -s 8000 -o uEnv_blob uEnv.txt
=> tftp 0x87000000 uEnv_blob Using FEC0 device TFTP from server 192.168.1.110; our IP address is 192.168.1.134 Filename 'uEnv_blob'. Load address: 0x87000000 Loading: # 1.1 MiB/s done Bytes transferred = 8000 (1f40 hex)
=> env import -b 0x87000000 8000 => printenv var2=1 var3=1 �ue�var1=1
Test2 (\n terminated strings)
OUT=uEnv.txt echo "var1=1" > $OUT echo "var2=1" >> $OUT echo "var3=1" >> $OUT echo "" >> $OUT
mkenvimage -s 8000 -o uEnv_blob uEnv.txt
=> tftp 0x87000000 uEnv_blob Using FEC0 device TFTP from server 192.168.1.110; our IP address is 192.168.1.134 Filename 'uEnv_blob'. Load address: 0x87000000 Loading: # 976.6 KiB/s done Bytes transferred = 8000 (1f40 hex)
=> env import -b 0x87000000 8000 => print Uل5var1=1 var2=1 var3=1
As you can see, in both cases, variable var1 is not loaded as expected.
This is my current u-boot version: => version U-Boot 2017.03-mx6ul+g434eba6 (Dec 06 2017 - 13:31:34 +0200) arm-fslc-linux-gnueabi-gcc (GCC) 7.2.0 GNU ld (GNU Binutils) 2.29.0.20170912
And this is u-boot-tools package installed on Ubuntu 20.04
$ dpkg -l|grep boot-tools ii u-boot-tools 2019.07+dfsg-1ubuntu6 amd64 companion tools for Das U-Boot bootloader
I am not sure if some step to clean the memory area where the uEnv_blob is loaded is missing before the tftp tranfer command. Or if this is simply a bug. Please explain what are the exact steps to follow in order to get this working.
Thanks in advance!