Hi Pali,
I'm building a new u-boot for the Thecus N2350 board (Armada 385 dual-core 1Ghz 1GB DDR4). The trouble with this board is DDR4, which is not currently supported in u-boot (also cc this to Chris for commenting about Marvell DDR4 training driver).
So I'm building with binary.0 in the ./board/thecus/n2350/. This binary.0 is a copy of the Marvell bin_hdr for SPI in the GPL source for this board (provided by Thecus). My ./board/thecus/n2350/kwbimage.cfg.in file looks like this
# Armada 38x uses version 1 image format VERSION 1 # Boot Media configurations BOOT_FROM spi # Binary Header (bin_hdr) with DDR4 training code BINARY board/thecus/n2350/binary.0 0000005b 00000068
When I kwboot the u-boot.kwb image (using kwboot binary built with 2023.01-rc4), the header was transferred successfully, but then the BootROM jumped to SPI u-boot, instead of loading the u-boot payload from UART. Please see the log below. <BEGIN LOG> # ./kwboot -t -p -B 115200 /dev/ttyUSB0 -b uboot.kwb
kwboot version 2023.01-tld-1-00048-g19e15f9081-dirty Patching image boot signature to UART Aligning image header to Xmodem block size Sending boot message. Please reboot the target.../ Sending boot image header (97792 bytes)... 0 % [......................................................................] 9 % [......................................................................] <snip> 82 % [......................................................................] 91 % [................................................................ ] Done
BootROM - 1.73 Booting from SPI flash
<snip> U-Boot 2013.01 (Nov 12 2018 - 20:56:19) Marvell version: 2015_T1.0p18-tld-4 <END LOG>
It seems kwboot patched the image, but the BOOT_FROM indicator was still recognized as from SPI. So the BootROM loaded the stock u-boot image from SPI and executed it. Since I am booting with bin_hdr, I'm not sure if there is something inside this blob that has forced this indicator to SPI.
I'm attaching the u-boot.kwb image to this email, in case you are interested in taking a look at the structure.
Thanks, Tony