kernel panic when booting FreeBSD-12.1-RELEASE- powerpc-bootonly.iso

[Neal Elliott]

hello, 
                  I'm trying to boot a VM from the "FreeBSD-12.1-RELEASE- powerpc-bootonly.iso" boot file. I'm using qemu with the following arguments:

qemu-system-ppc -M mac99 -prom-env "auto-boot?=true" -prom-env "boot-device=cdrom:,\ppc\loader" -L Bios -cdrom FreeBSD-12.1-RELEAS
E-powerpc-bootonly.iso -serial mon:telnet:127.0.0.1:6699,server -vga none -nographic

how can I go about troubleshooting this problem? can I exclude freebsd from using the "pci at f2000000/mac-io at c/escc/ch-b_TT
▒▒" device?

here is the output from the failed boot:

>> =============================================================
>> OpenBIOS 1.1 [Nov 15 2014 13:00]
>> Configuration device id QEMU version 1 machine id 1
>> CPUs: 1
>> Memory: 128M
>> UUID: 00000000-0000-0000-0000-000000000000
>> CPU type PowerPC,G4
milliseconds isn't unique.
Welcome to OpenBIOS v1.1 built on Nov 15 2014 13:00
Trying cdrom:,\ppc\loader...
Consoles: Open Firmware console

FreeBSD/powerpc Open Firmware loader, Revision 0.1
Memory: 131072KB
Booted from: /pci at f2000000/mac-io at c/ata-4 at 21000/cdrom at 0

Loading /boot/defaults/loader.conf
/boot/kernel/kernel data=0xd950fc+0x3030b8 syms=[0x4+0x98790+0x4+0xff011]
|
Hit [Enter] to boot immediately, or any other key for command prompt.
Booting [/boot/kernel/kernel]...
Kernel entry at 0x1001e0 ...
---<<BOOT>>---
Copyright (c) 1992-2019 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 12.1-RELEASE r354233 GENERIC powerpc
gcc version 4.2.1 20070831 patched [FreeBSD]
VT: init without driver.
cpu0: Motorola PowerPC 7400 revision 2.9, 0.00 MHz
cpu0: Features 9c000000<PPC32,ALTIVEC,FPU,MMU>
cpu0: HID0 809400a4<EMCP,DOZE,DPM,EIEC,SGE,BTIC,BHT>
real memory  = 103051264 (98 MB)
avail memory = 96157696 (91 MB)
arc4random: no preloaded entropy cache
random: entropy device external interface
kbd0 at kbdmux0
ofwbus0: <Open Firmware Device Tree> on nexus0
cpulist0: <Open Firmware CPU Group> on ofwbus0
cpu0: <Open Firmware CPU> on cpulist0
pcib0: <Apple UniNorth Host-PCI bridge> mem 0xf2000000-0xf3ffffff on ofwbus0
pci0: <OFW PCI bus> on pcib0
macio0: <KeyLargo I/O Controller> mem 0x80000000-0x8007ffff irq 27 at device 12.0 on pci0
cuda0: <Apple CUDA I/O Controller> mem 0x16000-0x17fff irq 25 on macio0
cuda0: registered as a time-of-day clock, resolution 0.001000s
adb0: <Apple Desktop Bus> on cuda0
scc0: <Zilog Z8530 dual channel SCC> mem 0x13000-0x13fff irq 37,36 on macio0
uart0: <z8530, channel A> on scc0
uart1: <z8530, channel B> on scc0
ata0: <Apple MacIO ATA Controller> mem 0x20000-0x20fff,0x8b00-0x8cff irq 13,2 on macio0
ata1: <Apple MacIO Ultra ATA Controller> mem 0x21000-0x21fff,0x8d00-0x8eff irq 14,3 on macio0
openpic0: <OpenPIC Interrupt Controller> mem 0x40000-0x7ffff on macio0
ohci0: <Apple KeyLargo/Intrepid USB controller> mem 0x80080000-0x800800ff irq 27 at device 13.0 on pci0
usbus0 on ohci0
pci0: <network, ethernet> at device 14.0 (no driver attached)
powermac_nvram0: <Apple NVRAM> mem 0xfff04000-0xfff07fff on ofwbus0
powermac_nvram0: both banks appear to be corrupt
device_attach: powermac_nvram0 attach returned 6
unin0: <Apple UniNorth System Controller> mem 0xf8000000-0xf8ffffff on ofwbus0
unin0: Version 913731689
cryptosoft0: <software crypto> on nexus0
panic: make_dev_alias_v: bad si_name (error=22, si_name=pci at f2000000/mac-io at c/escc/ch-b_TT
▒▒)
cpuid = 0
time = 1
KDB: stack backtrace:
#0 0x5b2a1c at kdb_backtrace+0x7c
#1 0x54c7f0 at vpanic+0x1f8
#2 0x54c8b4 at panic+0x54
#3 0x4c8d3c at make_dev_alias_v+0xa4
#4 0x4c9070 at make_dev_alias+0x60
#5 0x9417b8 at cn_drvinit+0xd0
#6 0x4c1d5c at mi_startup+0x178
#7 0x100254 at __start+0x74
Uptime: 1s

>> =============================================================
>> OpenBIOS 1.1 [Nov 15 2014 13:00]
>> Configuration device id QEMU version 1 machine id 1
>> CPUs: 1
>> Memory: 128M
>> UUID: 00000000-0000-0000-0000-000000000000
>> CPU type PowerPC,G4
milliseconds isn't unique.
Welcome to OpenBIOS v1.1 built on Nov 15 2014 13:00
Trying cdrom:,\ppc\loader...
Consoles: Open Firmware console

FreeBSD/powerpc Open Firmware loader, Revision 0.1
Memory: 131072KB
Booted from: /pci at f2000000/mac-io at c/ata-4 at 21000/cdrom at 0

Loading /boot/defaults/loader.conf
/boot/kernel/kernel data=0xd950fc+0x3030b8 syms=[0x4+0x98790+0x4+0xff011]
|
Hit [Enter] to boot immediately, or any other key for command prompt.


Type '?' for a list of commands, 'help' for more detailed help.
OK
 not found
OK