Re: No valid device tree blob found!

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 
> <Alexander@leidinger.net> wrote:
> 
> Am 2024-11-07 20:59, schrieb Warner Losh:
> 
> On Wed, Nov 6, 2024 at 3:41 AM Alexander Leidinger 
> <Alexander@leidinger.net> wrote:
> 
> Am 2024-11-02 17:08, schrieb Warner Losh:
> 
> On Sat, Nov 2, 2024, 10:03 AM Alexander Leidinger 
> <Alexander@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 <imp@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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