Hey
Getting Started with the Rock 3A Board
I installed on a Linux SD card as written in the wiki, but I need something different.
I want to download my bin file to SD card and run it via U-boot. How to do it? If you install Linux, it starts immediately (boot delay = 0), and if there is no OS on the sd card, then the board constantly reboots. Is it possible to exit Linux through console and return to U-boot?
I tried to turn on the debug board without an sd card, and then connect the sd card, but did not find how to do it in U-boot.
Can you help with advice or a link to a guide on how to do what I need (run user bin-file from sd-card)?
P.S.
Studied other topics and experimented
- formatted the sd card and wrote the bin file
- included the board without sd card
- Connected the SD card
- Run the following commands
4.1. mmc list
4.2. mmc dev 1
4.3. fatload mmc 1 50000 app.bin
4.4. go 50000
If I need to update the firmware, turn off the board and follow steps 2-4.
It turns out inconvenient, but at least it works for now.
Perhaps updating u-boot will make life easier, but I’m not confident in my abilities and would not like to influence what is already working
I’m still looking for advice.