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:
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NetBootFileXferSize= 00380004
Erasing SPI Flash...
Writing to SPI Flash...
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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.
Loading to SDRAM via TFTP should not update env.
- ngc
- Posts: 10
- Joined: Mon Dec 12, 2016 10:42 pm
- noblepepper
- Posts: 240
- Joined: Sat Nov 29, 2014 3:22 pm
Re: Loading to SDRAM via TFTP should not update env.
1. It will take writing the flash once per minute for 2 months continuously to reach the MINIMUM flash Erase/Program Endurance. While it is possible to wear out the flash if human interaction (i.e not a program doing this) is required I'm not going to worry about it, I'll just buy a new board at that point.
2. The messages you see indicate Das U-Boot is calling the functions that modify flash, they print a "." on the next line each time they modify a sector. Since there isn't a next line nothing is actually modified.
3. I don't know why you think this is writing the environment variables, but if the u-boot-env partition wears out Das U-Boot will start using compiled in defaults, you won't be able to change environment variables but the VoCore2 will boot up normally.
2. The messages you see indicate Das U-Boot is calling the functions that modify flash, they print a "." on the next line each time they modify a sector. Since there isn't a next line nothing is actually modified.
3. I don't know why you think this is writing the environment variables, but if the u-boot-env partition wears out Das U-Boot will start using compiled in defaults, you won't be able to change environment variables but the VoCore2 will boot up normally.
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