Date: Mon, 7 Nov 2016 20:33:50 +0100 (CET) From: Alexander Klein <xelalex_maker@web.de> To: freebsd-ppc@freebsd.org Subject: A few glitches with 10.3-RELEASE on an iBook G4 Message-ID: <alpine.BSF.2.20.1611061803001.1318@Apfelinchen>
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Hello,
the other day I decided to resurrect my old iBook G4 using FreeBSD just to=
=20
see how far I'd get in setting up an evironment without X or whatever.
Since the hardware is pretty old, I really wasn't expecting everything to=
=20
work right out of the box with a modern system, but generally most things=
=20
work pretty well. There are a few points, however, where I simply got=20
stuck, and maybe someone on the list has a few hints for me:
1. Keyboard:
The keymaps I could choose during install weren't all that useful, but I=20
modified an existing one to suit my needs for the time being. However,=20
there are still a few quirks left:
The machine has a German keyboard, and it seems that both, the ^/=B0-key in=
=20
the top left corner, as well as the fn-key in the bottom left corner get=20
mapped to scancode 0, which results in some unwelcome duplicated features=
=20
for fn, such as generating additional carets when switching virtual=20
consoles with fn+ctrl+alt+<Fn>
2. Screen:
I can't seem to do anything useful with vidcontrol when it comes to=20
switching video modes. First of all, vidcontrol -i mode only provides me=20
with the following:
mode# flags type size font window linear buff=
er
---------------------------------------------------------------------------=
---
0 (0x000) 0x00000000 T 0x0 0x1099121152 0xffffd948 1074888k =
-9k 0xffffd900 1073243k
1 (0x001) 0x00000000 T 0x0 0x1099121152 0xffffd948 1074888k =
-9k 0xffffd900 1073243k
=2E.. and so on for another few hundred lines.
This may be related to the video card not being detected properly. I'm=20
pretty sure it's ATI, but look what sysctl says with respect to the=20
backlight:
dev.backlight.0.level: 0
dev.backlight.0.%parent: vgapci0
dev.backlight.0.%pnpinfo:=20
dev.backlight.0.%location:=20
dev.backlight.0.%driver: backlight
dev.backlight.0.%desc: PowerBook backlight for nVidia graphics
dev.backlight.%parent:
Needless to say that changing the backlight-level doesn't do a thing, and=
=20
vidcontrol -c blink as well as vidcontrol -t 10 don't do anything useful,=
=20
either.
3. Sound:
While a sound device is detected, and the startup sound works just fine,=20
FreeBSD has yet to produce a single beep; here's /dev/soundstat:
Installed devices:
pcm0: <Apple I2S Audio Controller> (play) default
And this is what sysctl knows about sound:
device=09snd_ai2s
device=09snd_davbus
device=09snd_uaudio
hw.snd.default_auto: 1
hw.snd.version: 2009061500/powerpc
hw.snd.default_unit: 0
hw.snd.maxautovchans: 16
hw.snd.verbose: 0
hw.snd.vpc_mixer_bypass: 1
hw.snd.feeder_rate_presets: 100:8:0.85 100:36:0.92 100:164:0.97
hw.snd.feeder_rate_polyphase_max: 183040
hw.snd.feeder_rate_min: 1
hw.snd.feeder_rate_max: 2016000
hw.snd.feeder_rate_round: 25
hw.snd.feeder_rate_quality: 1
hw.snd.feeder_eq_presets: PEQ:16000,0.2500,62,0.2500:-9,9,1.0:44100,48000,8=
8200,96000,176400,192000
hw.snd.feeder_eq_exact_rate: 0
hw.snd.compat_linux_mmap: 0
hw.snd.basename_clone: 1
hw.snd.report_soft_formats: 1
hw.snd.report_soft_matrix: 1
hw.snd.latency: 5
hw.snd.latency_profile: 1
hw.snd.vpc_autoreset: 1
hw.snd.vpc_0db: 45
hw.snd.vpc_reset: 0
However, there's no /dev/dsp
4. CPU:
The machine ought to be running at 800MHz, but it seems to come up with=20
some kind of frequency throttling according to dmesg:
cpu0: Motorola PowerPC 7455 revision 3.3, 614.62 MHz
cpu0: Features 9c000000<PPC32,ALTIVEC,FPU,MMU>
cpu0: HID0 8450c0bc<EMCP,TBEN,NAP,DPM,ICE,DCE,SGE,BTIC,LRSTK,FOLD,BHT>
cpulist0: <Open Firmware CPU Group> on ofwbus0
cpu0: <Open Firmware CPU> on cpulist0
Anything related to cpufreq is missing from sysctl -a output.
Are those bugs, or am I doing something wrong?
I'll be grateful for any hints.
Best regards,
=09Alexander
From owner-freebsd-ppc@freebsd.org Mon Nov 7 19:40:30 2016
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To: freebsd-ppc@freebsd.org
Subject: Why Huge pages must be enabled to boot a FreeBSD VM?
From: Breno Leitao <brenohl@br.ibm.com>
Date: Mon, 7 Nov 2016 17:40:19 -0200
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Hello,
I am wondering why Huge pages must be enabled in the hypervisor (KVM) in
order to boot FreeBSD as a guest.
I was facing the issue below, and then I found that I didn't have enough huge
pages available. Enabling the amount of huge pages available solved this issue.
Kernel entry at 0x1023c0 ...
panic: Page replacement error: -4
cpuid = 0
KDB: stack backtrace:
#0 0x6144fc at ??+0
#1 0x614598 at ??+0
#2 0xa7b078 at ??+0
#3 0xa31544 at ??+0
#4 0xa33010 at ??+0
#5 0xa7b480 at ??+0
#6 0xa6b2bc at ??+0
#7 0xa64c74 at ??+0
#8 0x102458 at ??+0
Uptime: 1s
If huge pages is not enabled, is there a way to proceed with normal pages
other than crashing the VM?
Thank you,
Breno
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