PR 252541: Early kernel panic on RPi4B (Too many early devmatch mappings)

[Gordon Bergling]

Hi,

I am currently investigating PR 252541 (Too many early devmatch mappings) [1].

The kernel panic happends on the RPi4B. Has anyone successfully booted a rivision
on the RPi4B after:

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commit e83fdf8bb391579fa422d34663cd8c1f82a00dc0
Author:     Chuck Tuffli <chuck at FreeBSD.org>
AuthorDate: 2021-01-08 22:36:37 +0000
Commit:     Chuck Tuffli <chuck at FreeBSD.org>
CommitDate: 2021-01-08 22:41:45 +0000

   fix big-endian platforms after 6733401935f8

   The NVMe byte-swap routines for big-endian platforms used memcpy() to
   move the unaligned 64-bit value into a temp register to byte swap it.
   Instead of introducing a dependency, manually byte-swap the values in
   place.
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--Gordon

[1] https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252541
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