[meta-xilinx] PicoZed 7030 again

[Artjom Rjabov]

For some reason, I can't boot the picozed-zynq7 image from an SD card on PicoZed+FMC Carrier Card Gen2. I worked with Zedboard previously and everything worked perfectly.
I've read all the threads about Picozed here but didn't find anything helpful. Devicetree in "meta-xilinx-bsp/recipes-bsp/device-tree" looks fine at the moment.
It has a console definition (chosen/stdout-path) in it and serial0 is enabled. I decompiled it to make sure that everything is there.

Here what I did:

1. Compiled everything without my own recipes and bbappends. Uploaded  boot.bin, uImage, picozed-zynq7.dtb, uEnv.txt, u-boot.img, and rootfs on the SD card and tried to boot.
It didn't work. The D10 and D11 PS LEDs on the FMC carrier were blinking in sync indefinitely.

2. I generated my own ps7_init_gpl files in vivado (SD0 and SD1 enabled, UART1 on MIO48 and 49), created my own platform-init.bbappend file for replacing the init files. Enabled SD0 in the device tree. Bitbaked everything. Same result.

3. FSBL approach that worked with Zedboard. I copied u-boot.elf from the generated image folder, created FSBL in SDK and generated BOOT.bin with these two files. The result was different. The D10 and D11 blinked only once, but still no console output over the UART. It looks like it doesn't even get to the device tree because the result is the same even if there is no dtb file on the SD card.

What am I missing here?