Re: How to collect debug information while booting kernel on powerpc 32 bit

2020-07-01 Thread John Paul Adrian Glaubitz
On 7/1/20 4:51 PM, Giuseppe Sacco wrote:
> How may I debug the problem? I tried a lot of kernel parameters without
> having any additional information on the screen. Would it be helpful to
> connect a serial cable (where?), use it to connect a console, and get
> more info? Is there any parameter that may be used for collecting more
> information when creating the initrd image?
Try setting up a netconsole [1][2], that usually works just fine.

Adrian

> [1] https://wiki.ubuntu.com/Kernel/Netconsole
> [2] https://www.kernel.org/doc/Documentation/networking/netconsole.txt

-- 
 .''`.  John Paul Adrian Glaubitz
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How to collect debug information while booting kernel on powerpc 32 bit

2020-07-01 Thread Giuseppe Sacco
Hello,
I cannot boot a powerbook g4 with kernels more recent than 3.16. Using
5.6 and 5.7 from sid, the system blocks after printing these lines:

pmac32_cpufreq: registering PowerMac CPU frequency driver
pamc32_cpufreq: Low: 667 MHz, High: 867 Mhz, Boot: 667 MHz

I opened a bug report (#963689) but I would like to contribute more
information.

How may I debug the problem? I tried a lot of kernel parameters without
having any additional information on the screen. Would it be helpful to
connect a serial cable (where?), use it to connect a console, and get
more info? Is there any parameter that may be used for collecting more
information when creating the initrd image?

Thank you,
Giuseppe



GCC and binutils plans for bullseye

2020-07-01 Thread Matthias Klose
Debian bullseye will be based on a gcc-10 package taken from the gcc-10 upstream
branch, and binutils based on a binutils package taken from the 2.35 branch.

I'm planning to make gcc-10 the default after gcc-10 (10.2.0) is available
(upstream targets mid July).  binutils will be updated before making the GCC
switch. The GCC 10 switch involves some minor library transitions for D, gccgo,
M2, which should be no-brainers. The gnat transition will be handled separately
by the debian Ada maintainers.

binutils should be pretty stable until the bullseye release, not planning an
update to 2.36.  GCC 10 should be updated to 10.3, or close to 10.3 (the release
date is not yet known, could be Feb 2021).

I'd like to get rid off GCC 8 and GCC 9 for the bullseye release.

Matthias