[Bug 282493] Doesn't boot anymore on Oracle Cloud Ampere system

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=282493

            Bug ID: 282493
           Summary: Doesn't boot anymore on Oracle Cloud Ampere system
           Product: Base System
           Version: CURRENT
          Hardware: arm64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: arm
          Assignee: [email protected]
          Reporter: [email protected]

I've updated an oracle cloud ampere instance running -current from
2024-09-12-140543 to 2024-10-30-121420 and now it fails to boot from this BE:
---snip---
Hit [Enter] to boot immediately, or any other key for command prompt.
Booting [/boot/kernel/kernel]...
Loading splash ok
No valid device tree blob found!
WARNING! Trying to fire up the kernel, but no device tree blob found!
---snip---

The previous BE boots just fine and I can provide info from it about the
system.

My kernel config is:
---snip---
cpu             ARM64
ident           ALCATRAZ

include         "std.arm64"
include         "std.dev"

# Include SoC specific configuration
include         "std.arm"
include         "std.virt"

include         "../../conf/std.nodebug"

nooptions TCP_BLACKBOX
nooptions MD_ROOT
nooptions NFSCL
nooptions NFSD
nooptions NFSLOCKD
nooptions NFS_ROOT
nooptions MSDOSFS
nooptions CD9660
#nooptions COMPAT_FREEBSD11
nooptions COMPAT_FREEBSD12
nooptions COMPAT_FREEBSD13
nodevice cd
nodevice nvme
nodevice nvd
nodevice pwm
nodevice sound
nodevice mmc
nodevice mmcsd

makeoptions WITH_KERNEL_RETPOLINE=yes
options         MAXPHYS=(4*1024*1024)
options         NETLINK
options         TCP_RFC7413
---snip---

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