U-Boot with direct NVMe boot support for eMMC/SPI Flash

[Wizzard]

I tried it but this is the output:

dd: writing to '/dev/mtd0': No space left on device
8129+0 records in
8128+0 records out
4161536 bytes (4.2 MB, 4.0 MiB) copied, 12.889 s, 323 kB/s

I see in lsblk there is no mtd0 device, just this:

mtdblock0     31:0    0     4M  0 disk
mtdblock1     31:1    0    32K  0 disk
mtdblock2     31:2    0   256K  0 disk

So I am a little afraid to reboot now

---

I tried to PM, but you have the PMs disabled, so I think I can reply here:

SPI flash is not supposed to show up in lsblk because it's not a block device.
Which Linux distribution did you use to flash the image? You should've checked the target before doing any writes.
Execute `dmesg | grep spi` and make sure spi-nor module was loaded correctly. There should be something along these lines:

Code:

spi-nor spi0.0: gd25q128 (16384 Kbytes)

Try to read the image back from /dev/mtd0 and check its contents.
If they represent the first 4 Mbytes of spiflash.bin and spi-nor was loaded properly, you can try to erase the contents by executing

Code:

flash_erase /dev/mtd0 0 0

Don't do this unless you're sure that /dev/mtd0 is indeed an SPI flash.

Thanks, but it seems it is late for me, I rebooted already and PBP does not start now. I used Ubuntu Mate distro.
I just tried cat /dev/mtd0 and the result was empty.
I also found some 16 MB device in lsblk, but as you said, it should not be SPI flash.
I know, it is just my fault, so I will try something with the SD cards now. I made those steps to clean those booting code from SD card but still does not boot. I guess I cannot just replace the SPi flash because it is a part of PCB, right?