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anthonyw
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Location: Dundalk, Ireland

PostPosted: Mon Sep 29, 2014 7:53 am    Post subject: Installing gentoo on a G4 desktop Reply with quote

I've just started installing gentoo onto a G4 desktop. At work we have about 20 of these and wanted to get some more up to date software running on them. They still have the original Mac OS on them. A colleague of mine has debian stable running on one, and i wanted to try out gentoo.

Haven't done much yet other than prepare the disk. Going to have a go at compiling the kernel on it today.

Any suggestions about kernel configs, what desktop to use etc. welcome.

Quote:

(chroot) livecd / # cat /proc/cpuinfo
processor : 0
cpu : 7450, altivec supported
clock : 866.666664MHz
revision : 2.1 (pvr 8000 0201)
bogomips : 66.43

total bogomips : 66.43
timebase : 33217983
platform : PowerMac
model : PowerMac3,5
machine : PowerMac3,5
motherboard : PowerMac3,5 MacRISC2 MacRISC Power Macintosh
detected as : 69 (PowerMac G4 Silver)
pmac flags : 00000010
L2 cache : 256K unified
pmac-generation : NewWorld
Memory : 640 MB
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chithanh
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Posts: 2152
Location: Berlin, Germany

PostPosted: Mon Sep 29, 2014 10:34 am    Post subject: Reply with quote

Just a heads up, there is a known issue using radeon KMS, AGP and libata together. See this post.

If you encounter this problem, radeon.agpmode=0 kernel parameter or switching to the IDE driver might help.

About the kernel config, start with "make pmac32_defconfig" and adjust as needed.
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anthonyw
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PostPosted: Tue Sep 30, 2014 4:08 pm    Post subject: Reply with quote

Thanks for that,

I've just compiled a kernel but can't get it to boot. There's different reports via google of getting yaboot to boot a kernel from an ext4 filesystem, some say they can and some say they can't.
Here's my partitioning i have a swap partition on hda3 and then / on hda4 which is ext4. So no seperate /boot partition.

I'm going to try creating a small ext2 partition for /boot

So going boot from the cd again, tar what i have done already up, repartiton with a small ext2 partition for /boot, and then untar back to the disks again. Just to see if that solves my issue.

Quote:

livecd linux # mac-fdisk /dev/hda
/dev/hda
Command (? for help): p
/dev/hda
# type name length base ( size ) system
/dev/hda1 Apple_partition_map Apple 63 @ 1 ( 31.5k) Partition map
/dev/hda2 Apple_Bootstrap bootstrap 1600 @ 64 (800.0k) NewWorld bootblock
/dev/hda3 Apple_UNIX_SVR2 swap 1048576 @ 1664 (512.0M) Linux swap
/dev/hda4 Apple_UNIX_SVR2 root 119052960 @ 1050240 ( 56.8G) Linux native

Block size=512, Number of Blocks=120103200
DeviceType=0x0, DeviceId=0x0
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anthonyw
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PostPosted: Wed Oct 08, 2014 4:29 pm    Post subject: Reply with quote

So I've repartitioned and have gone through a number of kernel recompiles. Here's the screen that is currently displaying just after yaboot.

http://i105.photobucket.com/albums/m225/anthonywalters/computerstuff/bootmsg.jpg

It's hangs here.

My thought processes are that:
This is the kernel starting to boot right?
So then it might be some form of video/display issue?

Code:

livecd ~ # lspci
0000:00:0b.0 Host bridge: Apple Inc. UniNorth 1.5 AGP
0000:00:10.0 VGA compatible controller: NVIDIA Corporation NV11 [GeForce2 MX/MX 400] (rev a1)
0001:10:0b.0 Host bridge: Apple Inc. UniNorth 1.5 PCI
0001:10:15.0 Multimedia controller: Motorola DSP56301 Digital Signal Processor (rev 03)
0001:10:17.0 Unassigned class [ff00]: Apple Inc. KeyLargo Mac I/O (rev 03)
0001:10:18.0 USB controller: Apple Inc. KeyLargo USB
0001:10:19.0 USB controller: Apple Inc. KeyLargo USB
0002:20:0b.0 Host bridge: Apple Inc. UniNorth 1.5 Internal PCI
0002:20:0e.0 FireWire (IEEE 1394): LSI Corporation FW322/323 [TrueFire] 1394a Controller (rev ff)
0002:20:0f.0 Ethernet controller: Apple Inc. UniNorth GMAC (Sun GEM) (rev 01)
livecd ~ #


Code:
livecd ~ # cat /mnt/gentoo/etc/fstab     
# /etc/fstab: static file system information.
#
# noatime turns off atimes for increased performance (atimes normally aren't
# needed); notail increases performance of ReiserFS (at the expense of storage
# efficiency).  It's safe to drop the noatime options if you want and to
# switch between notail / tail freely.
#
# The root filesystem should have a pass number of either 0 or 1.
# All other filesystems should have a pass number of 0 or greater than 1.
#
# See the manpage fstab(5) for more information.
#

# <fs>         <mountpoint>   <type>      <opts>      <dump/pass>

# NOTE: If your BOOT partition is ReiserFS, add the notail option to opts.
#/dev/BOOT      /boot      ext2      noauto,noatime   1 2
#/dev/ROOT      /      ext3      noatime      0 1
#/dev/SWAP      none      swap      sw      0 0
#/dev/cdrom      /mnt/cdrom   auto      noauto,ro   0 0
#/dev/fd0      /mnt/floppy   auto      noauto      0 0

/dev/hda3   none         swap    sw                   0 0
/dev/hda4   /boot        ext2    noauto,noatime       1 2
/dev/hda5   /            ext4    noatime              0 1

/dev/cdrom  /mnt/cdrom   auto    noauto,user          0 0
livecd ~ #


Code:

livecd ~ # cat /mnt/gentoo/etc/yaboot.conf
## yaboot.conf generated by yabootconfig 1.0.8
##
## run: "man yaboot.conf" for details. Do not make changes until you have!!
##
## For a dual-boot menu, add one or more of:
## bsd=/dev/hdaX, macos=/dev/hdaY, macosx=/dev/hdaZ
##        append="video=ofonly"

boot=/dev/hda2
#device=/pci@f2000000/mac-io@17/ata-4@1f000/disk@0:
device=hd:
partition=4
root=/dev/hda5
timeout=30
install=/usr/lib/yaboot/yaboot
magicboot=/usr/lib/yaboot/ofboot

image=/kernel-3.12.21-gentoo-r1
   label=Linux
   read-only
livecd ~ #



Code:
livecd ~ # mac-fdisk -l
/dev/hda
        #                    type name                  length   base      ( size )  system
/dev/hda1     Apple_partition_map Apple                     63 @ 1         ( 31.5k)  Partition map
/dev/hda2         Apple_Bootstrap bootstrap               1600 @ 64        (800.0k)  NewWorld bootblock
/dev/hda3         Apple_UNIX_SVR2 swap                 1310720 @ 1664      (640.0M)  Linux swap
/dev/hda4         Apple_UNIX_SVR2 boot                  204800 @ 1312384   (100.0M)  Linux native
/dev/hda5         Apple_UNIX_SVR2 root               118586016 @ 1517184   ( 56.5G)  Linux native

Block size=512, Number of Blocks=120103200
DeviceType=0x0, DeviceId=0x0

/dev/hdb
        #                    type name                  length   base      ( size )  system
/dev/hdb1     Apple_partition_map Apple                     63 @ 1         ( 31.5k)  Partition map
/dev/hdb2          Apple_Driver43 Macintosh                 56 @ 64        ( 28.0k)  Driver 4.3
/dev/hdb3          Apple_Driver43 Macintosh                 56 @ 120       ( 28.0k)  Driver 4.3
/dev/hdb4        Apple_Driver_ATA Macintosh                 56 @ 176       ( 28.0k)  Unknown
/dev/hdb5        Apple_Driver_ATA Macintosh                 56 @ 232       ( 28.0k)  Unknown
/dev/hdb6          Apple_FWDriver Macintosh                512 @ 288       (256.0k)  Unknown
/dev/hdb7      Apple_Driver_IOKit Macintosh                512 @ 800       (256.0k)  Unknown
/dev/hdb8           Apple_Patches Patch Partition          512 @ 1312      (256.0k)  Unknown
/dev/hdb9              Apple_Free                       262144 @ 1824      (128.0M)  Free space
/dev/hdb10              Apple_HFS Apple_HFS_Untitled_2 156037504 @ 263968    ( 74.4G)  HFS
/dev/hdb11             Apple_Free                           16 @ 156301472 (  8.0k)  Free space

Block size=512, Number of Blocks=156301488
DeviceType=0x0, DeviceId=0x0
Drivers-
1: @ 64 for 23, type=0x1
2: @ 120 for 36, type=0xffff
3: @ 176 for 21, type=0x701
4: @ 232 for 34, type=0xf8ff

/dev/hdc
        #                    type name                length   base    ( size )  system
/dev/hdc1     Apple_partition_map Apple                    2 @ 1       (  1.0k)  Partition map
/dev/hdc2               Apple_HFS catalyst 20140713   345912 @ 16      (168.9M)  HFS

Block size=512, Number of Blocks=345928
DeviceType=0x1, DeviceId=0x1

livecd ~ #
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john90901
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PostPosted: Wed Jul 20, 2016 11:52 am    Post subject: Reply with quote

Is it just me or does yaboot work correctly only after re-ordering in mac-fdisk so that bootstrap is on partition number 2 , as in, it won't work if it's at number 5 or anything else ?
[G4]
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GreenNeonWhale
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PostPosted: Wed Aug 03, 2016 4:46 am    Post subject: that has not been my experience with yaboot Reply with quote

I haven't had that problem with yaboot. For example I currently have a PowerMac G3 with the boot partition on partition 4, and the OS on partition 3, and it works just fine. I would recommend the ext2 filesystem for the boot partition, as I know that yaboot can read that filesystem. That's the way I do it on PPC Macs and its worked well for me.
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GreenNeonWhale
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PostPosted: Wed Aug 03, 2016 8:07 pm    Post subject: bootstrap or /boot partition Reply with quote

I was just thinking, and if you're referring to the Apple_Bootstrap partition, and not the separate /boot partition, then no I haven't tried that on anything other than partition 2. I was thinking of the /boot partition when I wrote my last post. If you do want to move it, you might try manually configuring yaboot.conf if you haven't tried that already.
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cbefdf
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PostPosted: Thu Aug 11, 2016 8:53 am    Post subject: Reply with quote

In case anyone needs a G4 config, here is one, based on the ppc32 minimal CD:
http://pastebin.ca/3683748

RAM issues ?
http://powerpcliberation.blogspot.com/2015/04/when-you-need-to-memtest-your-ram.html
http://www.command-tab.com/2008/01/11/how-to-test-ram-under-mac-os-x/
_________________
box1: Power Mac G4 Quicksilver
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