Boot without DRAM and running PS without OS

[carnby]

According to some actual reasons, I have to boot my Zynq 7000 FPGA withou any DRAM nor SD on board.

I have used many FPGAs, but to embedded devices, I'm a new guy.

I want to ask 3 questions.

1: Can I boot a Zynq 7000 device with no DRAM nor SD on board, just using a flash?

2: Can I using the PS to excute some C code program without any OS?

3: Can I using PL to debug some external components without PS boot? In other words, is booting PS the first necessary step to use PL?

[mattwaltz · Accepted solution]

1. Yes

2. Yes, but your program and program data have to live *somewhere*. Are you perhaps using bram inside the FPGA logic?

3. If flash is used for booting, the FPGA is programmed by the FSBL running inside the PS. Therefore, the PS needs to at least run the FSBL in order to program the FPGA at boot.

[drjohnsmith]

this gives some pointers.
https://forums.xilinx.com/t5/Embedded-Boot-and-Configuration/Zynq-7000-Initialize-BRAM-from-FSBL/td-p/943001

[carnby]

Thanks a lot!
This answer do help.

[carnby]

Thank you!
Your answers are very clear.