Re: Succeeded to boot on Lenovo Yoga C630

Thank you.

2022年12月6日(火) 3:49 Mark Millard <[email protected]>:

> The following might be involved in your context.
>
> The following is from a successful boot of a HoneyComb via
> UEFI/ACPI (not device tree) via an old log file that I
> have around. Note the first two lines.
>
> . . .
> No valid device tree blob found!
> WARNING! Trying to fire up the kernel, but no device tree blob found!
> EFI framebuffer information:
> addr, size     0x0, 0x0
> dimensions     0 x 0
> stride         0
> masks          0x00000000, 0x00000000, 0x00000000, 0x00000000
> ---<<BOOT>>---
> GDB: no debug ports present
> KDB: debugger backends: ddb

OK, I (and the subject) was wrong. The loader boots, and show
following log at last:

Loading kernel...
/boot/kernel/kernel text=0x2a8 text=0x8bcbf0 text=0x1f97ac
data=0x1a6ac0 data=0x0+0x381000 syms=[0x8+0x11f6a0+0x8+0x1439ea]
Loading configured modules...
can't find '/boot/entropy'
can't find '/etc/hostid'
No valid device tree blob found!
WARNING! Trying to fire up the kernel, but no device tree blob found!
EFI framebuffer information
addr, size        0x80400000, 0x7e9000
dimensions     1920 x 1080
stride             1920
masks            0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000

and it stops here. No "<<BOOT>>" line is displayed.
So, it seems that the kernel is loaded but could not be started.

> . . .
>
> Such also happens for stable/13, releng/13.* based installations
> as well --and likely others too.
>
> ACPI booting does not use Device Tree information but the messages
> are output anyway about the lack. Only if you know that the context
> is a Device Tree style of boot are the messages actually reporting
> a problem.
>
>
> ===
> Mark Millard
> marklmi at yahoo.com
>