Loading to SDRAM via TFTP should not update env.
Posted: Sun Dec 18, 2016 6:08 am
My v2u reached to me. Thanks for works.
Now I'm trying new system image with "1: load system code to SDRAM via TFTP".
I noticed a bad point about it.
After loading system image (load ***-sysupgrade.bin as 'uImage'), u-boot said:
------
NetBootFileXferSize= 00380004
Erasing SPI Flash...
Writing to SPI Flash...
------
The above messages indicate updating environment variable on SPI FLASH.
It is no needs and u-boot should not update environment vars when only loading to SDRAM, because choice "1" is mainly used for debugging.
Updating endurance of SPI FLASH is not much.
Now I'm trying new system image with "1: load system code to SDRAM via TFTP".
I noticed a bad point about it.
After loading system image (load ***-sysupgrade.bin as 'uImage'), u-boot said:
------
NetBootFileXferSize= 00380004
Erasing SPI Flash...
Writing to SPI Flash...
------
The above messages indicate updating environment variable on SPI FLASH.
It is no needs and u-boot should not update environment vars when only loading to SDRAM, because choice "1" is mainly used for debugging.
Updating endurance of SPI FLASH is not much.