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Re: port-macppc/59632: Cannot Boot NetBSD 10.1 on Mac G
The following reply was made to PR port-macppc/59632; it has been noted by GNATS.
From: James Horner <humankind135%gmail.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: port-macppc-maintainer%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
netbsd-bugs%netbsd.org@localhost
Subject: Re: port-macppc/59632: Cannot Boot NetBSD 10.1 on Mac G
Date: Sun, 7 Sep 2025 12:57:53 +0100
Hi There
To start I would like thank you for your quick response, apologies for
the delay in response. I went down a rabbithole trying to install 10.0
but that didn't work (it would boot but get a dsa trap)
I tried the values you suggested and no luck and I tried some values
from the linked post and got a little further but no luck as yet:
--- Fresh Boot after time set and Sysem Disk save
--- real-base at default (-1)
>> NetBSD/macppc OpenFirmware Boot, Revision 1.14 (Mon Dec 16 13:08:11 UTC 2024)
>> Open Firmware version 2.x
>> Open Firmware running in virtual-mode.
no active packageno active package11860332+167196 [463456CLAIM
failed!!! FAILED TO CLAIM PHYS 0xc79000 size 0x71000
read section
start=0x0
DEFAULT CATCH!, code=FFF00300 at %SRR0: 00E0E6E8 %SRR1: 00003070
ok
0 > printenv
VARIABLE CURRENT DEFAULT
little-endian? false false
real-mode? false false
auto-boot? false true
diag-switch? false false
fcode-debug? false false
oem-banner? false false
oem-logo? false false
use-nvramrc? true false
real-base -1 -1
real-size 100000 100000
virt-base -1 -1
virt-size 100000 100000
load-base 600000 4000
pci-probe-list -1 -1
screen-#columns 64 64
screen-#rows 28 28
selftest-#megs 0 0
boot-device /AAPL,ROM /AAPL,ROM
boot-file
diag-device fd:diags
diag-file
input-device kbd kbd
output-device screen screen
oem-banner
oem-logo
nvramrc
hex
: $D find-device ;
: $E device-end ;
: $L BLpatch ; : $R BRpatch ;
: $X execute ;
: $p 0 to my-self property ;
: $a " /chosen" $D $p $E ;
: &c " ata-enable" $call-parent ;
10 buffer: km
dev kbd
get-key-map km swap move
$E
: ck 0 do swap dup 3 >> km + c@ 1 rot 7 and << and or loop ;
: bootr 0d word count encode-string " machargs" $a
0 0 1 ck if 0 and else f 3d 0 2 ck if 40 or then then
if bye else 1e 0 do ['] boot catch drop 1f4 ms loop then bye ;
: myboot boot-command eval ;
dev enet
' open constant $M
: $M2 $M 710 - $X ;
: rl@ -7D9D40 $X ;
: chstat begin $M2 $M 14f8 - $X -7D6C20 $X rl@ 400 and 0= until ;
: bmstat begin $M2 $M 13F0 - $X rl@ 100 and until ;
: xmt1 get-msecs $M 720 - ! chstat $M A00 - $X bmstat chstat ;
' xmt1 ' WRITE 10 + l!
62 ' READ 7 - c!
: READ { _p _n ; _a } begin _p _n bead -> _a _a 2+
if _p c@ 80 and 0= else 1 then until _a ;
$E
dev /packages/obp-tftp
: $M over + ['] noop $L ;
: $O ['] open + ;
: $M1 dup 24 - -1720 $O $X 6 move 14 + ;
-5BC $O ' $M1 $L
0 $O E8 $M EC $M F0 $M F4 $M F8 + ' true $L
$E
dev /packages/mac-parts
: $M -7E89E0 $X 8000 alloc-mem 7F00 + 4 -7E89E0 $X ;
' load 268 - ' $M $L
' load 160 + ' 0 $L
$E
dev ide0
: open use-ata-interface 0 &c -1 ;
: set-device-ID set-drive-select ;
: reset-atapi-bus reset-ata-bus ;
' reset-ata-bus 2c + ' 2 $L
$E
dev ide1
: open use-ata-interface 0 &c -1 ;
: set-device-ID set-drive-select ;
: reset-atapi-bus reset-ata-bus ;
' reset-ata-bus 2c + ' 2 $L
$E
dev scsi
: $M ['] do-cmd + ;
: $M2 5 us -5f0 $M $X ;
: $M3 -710 $M f over $X $X ;
: $M4 1 ms ;
-1AC $M ' $M2 $L
100 $M ' $M3 $L
120 $M ' $M4 $L
124 $M ' 1 $L
$E
ff000000 dup dup 400 28 do-map 4+ w@ 10 and 0=
if 90b7 f3000032 w! then
unselect-dev
boot-command boot boot
ok
0 > setenv boot-load-base 6000000 ok
0 > setenv boot-device ide0/disk@0:0,ofwboot ok
0 > setenv boot-file netbsd ok
0 > setenv input-device ttya ok
0 > setenv output-device ttya ok
0 > reset-all
Open Firmware, 2.0f1
To continue booting the MacOS type:
BYE<return>
To continue booting from the default boot device type:
BOOT<return>
For Open Firmware serial I/O type:
TTYA IO<return>
ok
0 > boot bad partition number, using 0
OF_open bootpath=ide0/disk@0
read stage 2 blocks: 01234. done!
starting stage 2...
>> NetBSD/macppc OpenFirmware Boot, Revision 1.14 (Mon Dec 16 13:08:11 UTC 2024)
>> Open Firmware version 2.x
>> Open Firmware running in virtual-mode.
Cannot use bootpath
Using boot-device instead
no active packageno active package11860332CLAIM failed!!! FAILED TO
CLAIM PHYS 0x100000 size 0xb50000
read section
start=0x0
DEFAULT CATCH!, code=FFF00300 at %SRR0: 00E0E6E8 %SRR1: 00003070
ok
0 >
-- real-base set to ffffffff
Open Firmware, 2.0f1
To continue booting the MacOS type:
BYE<return>
To continue booting from the default boot device type:
BOOT<return>
For Open Firmware serial I/O type:
TTYA IO<return>
ok
0 > setenv breal-base FFFFFFFF ok
0 > reset-all
Open Firmware, 2.0f1
To continue booting the MacOS type:
BYE<return>
To continue booting from the default boot device type:
BOOT<return>
For Open Firmware serial I/O type:
TTYA IO<return>
ok
0 > boot bad partition number, using 0
OF_open bootpath=ide0/disk@0
read stage 2 blocks: 01234. done!
starting stage 2...
>> NetBSD/macppc OpenFirmware Boot, Revision 1.14 (Mon Dec 16 13:08:11 UTC 2024)
>> Open Firmware version 2.x
>> Open Firmware running in virtual-mode.
Cannot use bootpath
Using boot-device instead
no active packageno active package11860332CLAIM failed!!! FAILED TO
CLAIM PHYS 0x100000 size 0xb50000
read section
start=0x0
DEFAULT CATCH!, code=FFF00300 at %SRR0: 00E0E6E8 %SRR1: 00003070
ok
--- real-base 8F00000, this got the furthest
0 > setenv real-base 8F00000 ok
0 > reset-all
Open Firmware, 2.0f1
To continue booting the MacOS type:
BYE<return>
To continue booting from the default boot device type:
BOOT<return>
For Open Firmware serial I/O type:
TTYA IO<return>
ok
0 > boot bad partition number, using 0
OF_open bootpath=ide0/disk@0
read stage 2 blocks: 01234. done!
starting stage 2...
>> NetBSD/macppc OpenFirmware Boot, Revision 1.14 (Mon Dec 16 13:08:11 UTC 2024)
>> Open Firmware version 2.x
>> Open Firmware running in virtual-mode.
Cannot use bootpath
Using boot-device instead
no active packageno active package11860332+167196 [463456CLAIM
failed!!! FAILED TO CLAIM PHYS 0xc79000 size 0x71000
read section
start=0x0
DEFAULT CATCH!, code=FFF00300 at %SRR0: 00E0E6E8 %SRR1: 00003070
ok
0 >
--- load-base at 70000 same as pre
ad-base is affecting the process
0 > setenv load-base 70000 ok
0 > reset-all
Open Firmware, 2.0f1
To continue booting the MacOS type:
BYE<return>
To continue booting from the default boot device type:
BOOT<return>
For Open Firmware serial I/O type:
TTYA IO<return>
ok
0 > 0 > 0 > boot bad partition number, using 0
OF_open bootpath=ide0/disk@0
read stage 2 blocks: 01234. done!
starting stage 2...
>> NetBSD/macppc OpenFirmware Boot, Revision 1.14 (Mon Dec 16 13:08:11 UTC 2024)
>> Open Firmware version 2.x
>> Open Firmware running in virtual-mode.
Cannot use bootpath
Using boot-device instead
no active packageno active package11860332+167196 [463456CLAIM
failed!!! FAILED TO CLAIM PHYS 0xc79000 size 0x71000
read section
start=0x0
DEFAULT CATCH!, code=FFF00300 at %SRR0: 00E0E6E8 %SRR1: 00003070
ok
0 >
I tried some more values, 9F00000 didn't work but FF00000 did work. I
increased this value arbitrarily so FF00000 is probably larger than is
needed. I missed the logs for these but 9F00000 was basically the
same.
--- First SSH to Mac G3 Running NetBSD 10.1
NetBSD 10.1 (GENERIC) #0: Mon Dec 16 13:08:11 UTC 2024
Welcome to NetBSD!
macppcg3$ uname -a
NetBSD macppcg3.home....co.uk 10.1 NetBSD 10.1 (GENERIC) #0: Mon Dec
16 13:08:11 UTC 2024
mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/macppc/compile/GENERIC
macppc
Trying other values I got the same issues incrementing the first digit
of real-base from 9 though C, at D open firmware stopped starting (no
chime) and so I reset the nvram by removing the battery and power at
which point I went through the time and system disk process and tried
real-base FF00000 and the default load base and that seems to work.
An issue I have encountered is that it really doesn't like having
384MB memory, I had to remove a stick and bring it down to 256M to
get it to boot.
I;m not really sure what load-base and real-base do, although its
seems to have relevance as some kind of memory addresses for the
kernel/userspace loading.
I hope this information is useful, I have it booting but I am not sure
why the memory limit.
Thanks Again
James
On Fri, 5 Sept 2025 at 13:15, Izumi Tsutsui via gnats
<gnats-admin%netbsd.org@localhost> wrote:
>
> The following reply was made to PR port-macppc/59632; it has been noted by GNATS.
>
> From: Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>
> To: gnats-bugs%netbsd.org@localhost
> Cc: tsutsui%ceres.dti.ne.jp@localhost
> Subject: Re: port-macppc/59632: Cannot Boot NetBSD 10.1 on Mac G
> Date: Fri, 5 Sep 2025 21:13:30 +0900
>
> > 0 > setenv bootload-base 600000 ok
> > 0 > setenv real-base F00000 ok
> > 0 > setenv boot-file netbsd ok
> > 0 > setenv boot-device dide0/disk@0:0,ofwboot ok
> > 0 > boot bad partition number, using 0
>
> Try "setenv real-base ffffffff" (i.e. the default value) instead.
> https://mail-index.netbsd.org/netbsd-bugs/2024/05/27/msg083212.html
>
> ---
> Izumi Tsutsui
>
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