Re: No valid device tree blob found!

Alexander Leidinger Fri, 08 Nov 2024 00:35:36 -0800

Am 2024-11-08 05:46, schrieb Warner Losh:

OK. I'm confused... but no matter.


Three more things to help...
(1) kenv after boot with a fixed kernel


COLUMNS="100"
LINES="31"
acpi.oem="BOCHS "
acpi.revision="2"
acpi.rsdp="0x00000006385c0018"
acpi.rsdt="0x0000000000000000"
acpi.xsdt="0x00000006385cfe98"
acpi.xsdt_length="36"
acpi_dsdt_load="NO"
acpi_dsdt_name="/boot/acpi_dsdt.aml"
acpi_dsdt_type="acpi_dsdt"
acpi_video_load="NO"
audit_event_load="NO"
audit_event_name="/etc/security/audit_event"
audit_event_type="etc_security_audit_event"
autoboot_delay="1"
beastie_disable="YES"
bitmap_load="NO"
bitmap_name="splash.bmp"
bitmap_type="splash_image_data"
boot_multicons="YES"
boot_serial="YES"
bootenv_autolist="YES"
bootenvs[0]="zfs:zroot/ROOT/2024-10-30-121420_ko"
bootenvs[10]="zfs:zroot/ROOT/2024-07-15-110946"
bootenvs[11]="zfs:zroot/ROOT/2024-09-12-140543"
bootenvs[1]="zfs:zroot/ROOT/2024-10-14-233343_ko"
bootenvs[2]="zfs:zroot/ROOT/2024-10-14-160359"
bootenvs[3]="zfs:zroot/ROOT/2024-10-14-160358"
bootenvs[4]="zfs:zroot/ROOT/2024-10-13-232308"
bootenvs[5]="zfs:zroot/ROOT/2024-10-14-102617"
bootenvs[6]="zfs:zroot/ROOT/2024-10-11-084349"
bootenvs[7]="zfs:zroot/ROOT/2024-11-06-084833"
bootenvs[8]="zfs:zroot/ROOT/2024-08-15-222928"
bootenvs[9]="zfs:zroot/ROOT/2024-07-16-094205"
bootenvs_count="12"
bootfile="kernel"
console="efi"
cpu_microcode_load="NO"
cpu_microcode_name="/boot/firmware/ucode.bin"
cpu_microcode_type="cpu_microcode"
cryptodev_load="YES"
currdev="zfs:zroot/ROOT/2024-11-06-084833:"
efi-version="2.70"
efi_com_port="0"
efi_com_speed="38400"
efi_max_resolution="1x1"
entropy_cache_load="YES"
entropy_cache_name="/boot/entropy"
entropy_cache_type="boot_entropy_cache"
entropy_efi_seed="YES"
entropy_efi_seed_size="2048"
geom_eli_load="YES"
hint.acpi.0.disabled="0"
hint.smbios.0.mem="0x63bed0000"
hostuuid_load="YES"
hostuuid_name="/etc/hostid"
hostuuid_type="hostuuid"
hw.mca.enabled="1"
hw.uart.console="db:8,dt:pl011,mm:0x9000000,rs:0,rw:1,pa:none,br:9600,xo=0"
hw.usb.no_boot_wait="0"
kern.msgbuf_show_timestamp="1"
kern.random.fortuna.concurrent_read="1"
kernel="kernel"
kernel_options=""
kernel_path="/boot/kernel"
kernelname="/boot/kernel/kernel"
kernels_autodetect="YES"
loaddev="zfs:zroot/ROOT/2024-11-06-084833:"
loader.efi="1"
loader_conf_dirs="/boot/loader.conf.d"
loader_logo="none"
local_loader_conf_files="/boot/loader.conf.local"
module_blacklist="drm drm2 radeonkms i915kms amdgpu"
module_path="/boot/kernel;/boot/modules;/boot/dtb;/boot/dtb/overlays"
module_verbose="2"
net.inet.tcp.soreceive_stream="1"
net.link.ifqmaxlen="256"
nextboot_conf="/boot/nextboot.conf"
ram_blacklist_load="NO"
ram_blacklist_name="/boot/blacklist.txt"
ram_blacklist_type="ram_blacklist"
screensave_load="NO"
screensave_name="green_saver"
script.lang="lua"
smbios.bios.reldate="06/16/2021"
smbios.bios.revision="0.0"
smbios.bios.vendor="EFI Development Kit II / OVMF"
smbios.bios.version="1.5.1"
smbios.chassis.maker="QEMU"
smbios.chassis.tag="OracleCloud.com"
smbios.chassis.type="Other"
smbios.chassis.version="virt-4.2"
smbios.memory.enabled="25165824"
smbios.socket.enabled="1"
smbios.socket.populated="1"
smbios.system.maker="QEMU"
smbios.system.product="KVM Virtual Machine"
smbios.system.uuid="14fd7a5a-8f68-44d4-88b6-68498f8b55fb"
smbios.system.version="virt-4.2"
smbios.version="3.0"
splash="/boot/images/freebsd-logo-rev.png"
splash_bmp_load="NO"
splash_pcx_load="NO"
splash_txt_load="NO"
tcp_rack_load="YES"
tcphpts_load="YES"
twiddle_divisor="16"
verbose_loading="NO"
vesa_load="NO"
vfs.root.mountfrom="zfs:zroot/ROOT/2024-11-06-084833"
vm.exec_map_entries="32"
xz_load="YES"
zfs-bootonce="zfs:zroot/ROOT/2024-11-06-084833:"
zfs_be_active="zfs:zroot/ROOT/2024-10-14-160358"
zfs_be_currpage="1"
zfs_be_root="zroot/ROOT"
zfs_load="YES"

(2) sudo efivar --device-path 8be4df61-93ca-11d2-aa0d-00e098032b8c-ConIn


8be4df61-93ca-11d2-aa0d-00e098032b8c-ConIn

: UsbHID(0xffff,0xffff,0x1,0x1),/VenHw(d3987d4b-971a-435f-8caf-4967eb627241)/Uart(38400,8,N,1)/VenVt100()

(3) sudo efivar --device-path 8be4df61-93ca-11d2-aa0d-00e098032b8c-ConOut


8be4df61-93ca-11d2-aa0d-00e098032b8c-ConOut

: PciRoot(0x0)/Pci(0x1,0x0)/AcpiAdr(0x80010300),/VenHw(d3987d4b-971a-435f-8caf-4967eb627241)/Uart(38400,8,N,1)/VenVt100()


Bye,
Alexander.

Warner
On Thu, Nov 7, 2024 at 2:41 PM Alexander Leidinger <alexan...@leidinger.net> wrote:
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.
Yea. This is a hang or a bad console. The warning is lame and misleading.
Can you bisect?


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

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

    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(-)

-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...


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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Re: No valid device tree blob found!

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