[OpenBIOS] [PATCHv8 00/16] boot order specification

[Blue Swirl]

On Wed, Dec 8, 2010 at 11:34 AM, Gleb Natapov <gleb at redhat.com> wrote:
> Forget to save a couple of buffers before sending version 7 :(
>
> Anthony, Blue can this be applied now?

I made some more tests, this time with PPC. I modified OpenBIOS to
print out the boot device list:

$ qemu-system-ppc -drive if=none,id=hda,file=/dev/null -device
ide-drive,drive=hda,bootindex=1 -drive if=none,id=cd,file=/dev/null
-device ide-drive,drive=cd,bootindex=0 -nographic -prom-env
'auto-boot?=false' -L .
qemu-system-ppc: pci_add_option_rom: failed to find romfile "vgabios-stdvga.bin"
Could not open option rom 'pxe-ne2k_pci.bin': No such file or directory

>> =============================================================
>> OpenBIOS 1.0 [Nov 28 2010 19:37]
>> Configuration device id QEMU version 1 machine id 2
>> CPUs: 1
>> Memory: 128M
>> UUID: 00000000-0000-0000-0000-000000000000
>> CPU type PowerPC,750
>> bootindex /grackle at fec00000/ide at 3/drive at 1/disk at 1
>> /grackle at fec00000/ide at 3/drive at 1/disk at 0
Welcome to OpenBIOS v1.0 built on Nov 28 2010 19:37

0 > show-devs
7be6324 /
7be6440 /aliases
7be64e4 /openprom (BootROM)
7bebfa0 /openprom/client-services
7be668c /options
7be6704 /chosen
7be67e8 /builtin
7be688c /builtin/console
7bebcac /packages
7becda8 /packages/cmdline
7becee8 /packages/disk-label
7bedb58 /packages/terminal-emulator
7bee548 /packages/deblocker
7bee89c /packages/hfsplus-files
7beeb3c /packages/hfs-files
7beedd8 /packages/ext2-files
7bef010 /packages/iso9660-files
7bef248 /packages/grubfs-files
7bef480 /packages/mac-parts
7bef6b8 /packages/pc-parts
7bef8ec /packages/xcoff-loader
7bef9b8 /packages/elf-loader
7befa80 /packages/bootinfo-loader
7bed958 /cpus
7bf2fe8 /cpus/PowerPC,750 at 0 (cpu)
7beda58 /memory at 0 (memory)
7befb4c /pci at 80000000 (pci)
7beff64 /pci at 80000000/QEMU,VGA at 1 (display)
7bf0438 /pci at 80000000/NE2000 at 2 (network)
7bf0814 /pci at 80000000/pci-ata at 3 (pci-ide)
7bf0c50 /pci at 80000000/pci-ata at 3/ata-1 at 500 (ata)
7bf0dd0 /pci at 80000000/pci-ata at 3/ata-2 at 600 (ata)
7bf0f50 /pci at 80000000/pci-ata at 3/ata-2 at 600/disk at 1 (block)
7bf131c /pci at 80000000/pci-ata at 3/ata-2 at 600/disk at 0 (block)
7bf1674 /pci at 80000000/mac-io at 4 (mac-io)
7bf1b54 /pci at 80000000/mac-io at 4/via-cuda at 16000 (via-cuda)
7bf1d70 /pci at 80000000/mac-io at 4/via-cuda at 16000/adb (adb)
7bf1ed8 /pci at 80000000/mac-io at 4/via-cuda at 16000/adb/keyboard at 8 (keyboard)
7bf2080 /pci at 80000000/mac-io at 4/via-cuda at 16000/adb/mouse at 9 (mouse)
7bf220c /pci at 80000000/mac-io at 4/via-cuda at 16000/rtc (rtc)
7bf23f4 /pci at 80000000/mac-io at 4/nvram at 60000 (nvram)
7bf2614 /pci at 80000000/mac-io at 4/escc at 13000 (escc)
7bf271c /pci at 80000000/mac-io at 4/escc at 13000/ch-a at 13020 (serial)
7bf29b4 /pci at 80000000/mac-io at 4/escc at 13000/ch-b at 13000 (serial)
7bf2c20 /pci at 80000000/mac-io at 4/ata-3 at 20000 (ata)
 ok

/grackle at fec00000/ide at 3/drive at 1/disk at 1 does not match
/pci at 80000000/pci-ata at 3/ata-2 at 600/disk at 1.

I wonder where '@80000000' comes from. A dump of original g3beige
device tree is here:
http://penguinppc.org/historical/dev-trees-html/g3_beige_300.html

But actually the tree generated by OpenBIOS looks more like g3bw one:
http://penguinppc.org/historical/dev-trees-html/g3bw_400.html

How can we get the names to be more compatible? At least
s/grackle/pci/ is easy to do in QEMU, but which instance (QEMU or
OpenBIOS) should handle pci-ata vs ide change? What should we do with
ata-2 at 600 vs drive at 1?
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