I maintain a U-Boot port for some custom ASICs (Intel Axxia network processors). I've been basing this on v2015.10 for some time. I just rebased to the latest (v2016.07-67-gb8e5997), and though I can get to the U-Boot prompt, Linux no longer boots. As U-Boot seems to require a device tree now, I copied the one I use for Linux (port of Linux 4.1 for the same chips). I use a .fit image containing Linux and a device tree. Here's what happens.

=> iminfo

## Checking Image at 04000000 ... FIT image found FIT description: X9 Image 0 (kernel) Description: Linux Kernel Type: Kernel Image Compression: gzip compressed Data Start: 0x040000c8 Data Size: 4432517 Bytes = 4.2 MiB Architecture: AArch64 OS: Linux Load Address: 0x00080000 Entry Point: 0x00080000 Hash node: 'hash1' Hash algo: crc32 Hash value: 2e88186e Hash len: 4 Hash node: 'hash2' Hash algo: sha1 Hash value: 0c6c2a86daf3b7aca573b8d1256b516ab75126d1 Hash len: 20 Image 1 (fdt) Description: Flattened Device Tree blob Type: Flat Device Tree Compression: uncompressed Data Start: 0x0443a478 Data Size: 10841 Bytes = 10.6 KiB Architecture: AArch64 Hash node: 'hash1' Hash algo: crc32 Hash value: 9ef65e46 Hash len: 4 Hash node: 'hash2' Hash algo: sha1 Hash value: 7fa07a2584ecb094e2ab3431078dd0d47006313e Hash len: 20 Default Configuration: 'conf' Configuration 0 (conf) Description: X9 Kernel: kernel FDT: fdt ## Checking hash(es) for FIT Image at 04000000 ... Hash(es) for Image 0 (kernel): crc32+ sha1+ Hash(es) for Image 1 (fdt): crc32+ sha1+

=> bootm ## Loading kernel from FIT Image at 04000000 ... Fdt for comparison has no "compatible" property. No match found. Could not find configuration node ERROR: can't get kernel image!

How do I specify the "Fdt for comparison"? The device tree I added to the U-Boot build has the same compatible string as the fdt in the image I'm trying to boot?