DRAM: 948 MiB (effective 7.9 GiB)
RPI 4 Model B (0xd03114)
Core: 133 devices, 13 uclasses, devicetree: board
MMC: emmc2@7e340000: 0, mmcnr@7e300000: 1
Loading Environment from FAT… OK
In: serial
Out: serial
Err: serial
Net:
Warning: genet@7d580000 MAC addresses don’t match:
Address in DT is e4:5f:01:42:5b:0d
Address in environment is dc:a6:32:07:b3:a4
eth0: genet@7d580000
Hit any key to stop autoboot: 0
12667552 bytes read in 549 ms (22 MiB/s)
Booting kernel from Legacy Image at 00100000 …
Image Name: vxworks
Image Type: AArch64 VxWorks Kernel Image (uncompressed)
Data Size: 12667488 Bytes = 12.1 MiB
Load Address: 00100000
Entry Point: 00100000
Verifying Checksum … OK
Working FDT set to 0
Loading Kernel Image
!!! WARNING !!! Using legacy DTB
Starting vxWorks at 0x00100000, device tree at 0x00000000 …
Your build of U-boot seems to be very recent. If you didn’t update the board firmware since January, going back to a U-Boot checkout from late January would be a good start to troubleshoot the problem. Are you using version 1.4 of the Raspberry Pi 4 SDK?
I am having an issue getting VxWorks to boot on my Raspberry PI 4b. I have downloaded and compiled the latest version of uBoot, version 1.4 of vxWorks and have the lastest Raspberry Pi image. When booting, it simply shows a blank screen. Attached is an image of how far it boots:
The VxWorks kernel image included in the Raspberry Pi 4 SDK v1.4 does not include graphics support, so you’ll need to use a serial adapter as described in the README.
As mentioned by @Ishaan, the latest version of U-Boot may also not work properly, so, while troubleshooting startup issues, try using U-Boot v2023.01.