Re: No valid device tree blob found!

[Alexander Leidinger]

Am 2024-11-07 20:59, schrieb Warner Losh:

On Wed, Nov 6, 2024 at 3:41 AM Alexander Leidinger <alexan...@leidinger.net> wrote:

Am 2024-11-02 17:08, schrieb Warner Losh:

On Sat, Nov 2, 2024, 10:03 AM Alexander Leidinger <alexan...@leidinger.net> wrote: Am 2024-10-30 22:11, schrieb Alexander Leidinger:

WARNING! Trying to fire up the kernel, but no device tree blob found!

For anyone interested, I opened
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=282493 for this.



Can you bisect?

Yea. This is a hang or a bad console. The warning is lame and misleading.

Found it.

# git bisect bad
c87b3f0006be9ac5813f1ff636f18c9b4a41b08e is the first bad commit
commit c87b3f0006be9ac5813f1ff636f18c9b4a41b08e (HEAD)
Author: Warner Losh <i...@freebsd.org>
Date:   Mon Oct 14 15:58:10 2024 -0600

    uart: uart_getenv: check for NULL class last, not first


    parsing the spec, so defer checking until then.

    Sponsored by:           Netflix
    Reviewed by:            adrian, andrew, markj
    Differential Revision:  https://reviews.freebsd.org/D47078

 sys/dev/uart/uart_subr.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)





loader.conf:

autoboot_delay="1"
hw.usb.no_boot_wait="0"
beastie_disable="YES"
boot_serial="YES"
loader_logo="none"
cryptodev_load="YES"
xz_load="YES"
zfs_load="YES"
geom_eli_load="YES"

tcphpts_load="yes"
tcp_rack_load="YES"

hw.mca.enabled="1"
vm.exec_map_entries="32"

net.link.ifqmaxlen="256"
net.inet.tcp.soreceive_stream="1"
kern.random.fortuna.concurrent_read="1"
kern.msgbuf_show_timestamp="1"

Bye,
Alexander.

--
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This allows one to specify dt:XXXX when the default class isn't compiled into the kernel. It's not an error to not have a class until we're done -current as of today without this change boots just fine on the Ampere system in the Oracle cloud. what's your loader.conf? this should only matter if something is set there...

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