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* Newworld OF boot
@ 1999-11-02 18:32 Florent
  1999-11-02 20:07 ` Takashi Oe
  1999-11-02 20:24 ` David Edelsohn
  0 siblings, 2 replies; 6+ messages in thread
From: Florent @ 1999-11-02 18:32 UTC (permalink / raw)
  To: linuxppc-dev


Has anyone succeeded in booting newworld macintoshes (ie the iMac or the B&W
G3) using OF ?
I've looked at the mailing list archive and this topic has already been
discuted here, but as far as I read, there was no solution found.
Because I can't believe Apple has crippled OF for non-MacOS booting, I'm
sure there is a way to turn around.

Here is what I know and what I've tried :

- Quik doesn't works on newworld, but it is not the only way to boot under
OF.

- OF can load files from HFS, HFS+, iso9660, FAT... filesystems (included in
/packages)

- OF can execute at least ELF and XCOFF binaries.

- the root of a MacOS disk I can see under OF is the System folder. (I can
see that with "dir hd:,5\\", where 5 is the number of my MacOS partition)

- I can boot MacOS by typing "boot hd:,5\\Mac%20OS%20ROM".

- When I try "boot hd:,5\\vmlinux" (there is a linux kernel in my system
folder), the kernel is recognised as an elf binary, OF writes some
informations about it, but it fails and replies : CLAIM failed.

- I can sucessfuly load smaller ELF binaries without CLAIM errors.

Next, I've examined the MacOS ROM file (there is something about it at
http://developer.apple.com/technotes/tn/tn1167.html)
Just open it with a disk track editor or a text editor :

This file contains the following :

- An header with some informations and a forth boot script

- an ELF bootstraff code

- a MacOS ROM image.

The script seems to create and/or modify /rom/macos and
/rom/AAPL,toolbox-image,lzss. Then it loads the ELF code.
According to Apple, the ELF code (called Trampoline code) is specific to OF
and does the transition between OF and the ROM image.

I can successfuly run any Forth script loaded from the hard disk. This would
be a way to make a nice dual-boot menu.

In the past (before BootX), I used to boot LinuxPPC on a floppy where there
was an XCoff kernel (boot fd:\\vmlinux.coff). How can I compile an XCoff
kernel to try it ?

I've heard that FreeBSD is bootable under newworld's OF. Is the kernel an
ELF file, too ? Or is it like MacOS Rom file ?


--
Il est maintenant temps de clore votre connection et de reprendre une vie
normale.
Mon e-mail : FloBo@iName.com (Florent Boudet)
Mon e-mail secondaire : FloBo@Rocketmail.com (je ne le regarde jamais)
Mon QG : http://www.multimania.com/flobo/

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re : Newworld OF boot
@ 1999-11-04 23:48 Florent
  1999-11-08 14:12 ` Benjamin Herrenschmidt
  0 siblings, 1 reply; 6+ messages in thread
From: Florent @ 1999-11-04 23:48 UTC (permalink / raw)
  To: Ethan Benson; +Cc: linuxppc-dev


>>Has anyone succeeded in booting newworld macintoshes (ie the iMac or the B&W
>>G3) using OF ?
>
> no
>
>>I'm
>>sure there is a way to turn around.
>
> yup, we need a elf version of quik that works, then we can stick that
> on a tiny partition and not have to use msdosfs or hfs for the root
> filesystem
[...]
> let me know if you find out anything else, I want to fix this issue
> but it seems that everyone else just want to use bootx for eternity.
> it would be nice if you could find a way to make OF load a bootblock
> as that would be cleaner then a partition, if you can write code then
> perhaps fix the quik second stage loader (elf version) to work
> properly (it loads now but just says an error because it does not
> expect to be loaded like that)

I'm currently working on the second stage loader (version 2.0.0a). When it
is launched from OF, it detects the machine as a CHRP and fixes the root
partition as the second one (this part of the code seems to be a quick add).

Things I've changed :
-in main.c line 353: replaced fip->conf_part = 2; with my root partition
number.
-in disk.c line 59 : sprintf(bootdevice, "disk:0"); replaced disk:0 with hd
(or ultra0) to match the blueg3 firmware's aliases names.

Now it works better, but it fails when it tries to open /etc/quik.conf (call
to ext2fs_open() in file.c) : I get a Default Catch error and OF breaks.

Since the second stage loader relies on OF for raw disk access, and that
doesn't seems to work with newworld's OF, i think it will never boot this
way.
I think that there is no way else than make an OF-readable partition
containing the kernel and an elf program to load it...

I must boot MacOS to boot Linux, then I modify and compile quik, then I
reboot my computer to test it with OF, then it crashes, then I reboot under
MacOS, then Linux... I'm fed up with rebooting.


--
Il est maintenant temps de clore votre connection et de reprendre une vie
normale.
Mon e-mail : FloBo@iName.com (Florent Boudet)
Mon e-mail secondaire : FloBo@Rocketmail.com (je ne le regarde jamais)
Mon QG : http://www.multimania.com/flobo/

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Newworld OF boot
@ 1999-11-02 18:32 Florent
  0 siblings, 0 replies; 6+ messages in thread
From: Florent @ 1999-11-02 18:32 UTC (permalink / raw)
  To: linuxppc-dev


Has anyone succeeded in booting newworld macintoshes (ie the iMac or the B&W
G3) using OF ?
I've looked at the mailing list archive and this topic has already been
discuted here, but as far as I read, there was no solution found.
Because I can't believe Apple has crippled OF for non-MacOS booting, I'm
sure there is a way to turn around.

Here is what I know and what I've tried :

- Quik doesn't works on newworld, but it is not the only way to boot under
OF.

- OF can load files from HFS, HFS+, iso9660, FAT... filesystems (included in
/packages)

- OF can execute at least ELF and XCOFF binaries.

- the root of a MacOS disk I can see under OF is the System folder. (I can
see that with "dir hd:,5\\", where 5 is the number of my MacOS partition)

- I can boot MacOS by typing "boot hd:,5\\Mac%20OS%20ROM".

- When I try "boot hd:,5\\vmlinux" (there is a linux kernel in my system
folder), the kernel is recognised as an elf binary, OF writes some
informations about it, but it fails and replies : CLAIM failed.

- I can sucessfuly load smaller ELF binaries without CLAIM errors.

Next, I've examined the MacOS ROM file (there is something about it at
http://developer.apple.com/technotes/tn/tn1167.html)
Just open it with a disk track editor or a text editor :

This file contains the following :

- An header with some informations and a forth boot script

- an ELF bootstraff code

- a MacOS ROM image.

The script seems to create and/or modify /rom/macos and
/rom/AAPL,toolbox-image,lzss. Then it loads the ELF code.
According to Apple, the ELF code (called Trampoline code) is specific to OF
and does the transition between OF and the ROM image.

I can successfuly run any Forth script loaded from the hard disk. This would
be a way to make a nice dual-boot menu.

In the past (before BootX), I used to boot LinuxPPC on a floppy where there
was an XCoff kernel (boot fd:\\vmlinux.coff). How can I compile an XCoff
kernel to try it ?

I've heard that FreeBSD is bootable under newworld's OF. Is the kernel an
ELF file, too ? Or is it like MacOS Rom file ?


--
Il est maintenant temps de clore votre connection et de reprendre une vie
normale.
Mon e-mail : FloBo@iName.com (Florent Boudet)
Mon e-mail secondaire : FloBo@Rocketmail.com (je ne le regarde jamais)
Mon QG : http://www.multimania.com/flobo/

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~1999-11-08 14:12 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
1999-11-02 18:32 Newworld OF boot Florent
1999-11-02 20:07 ` Takashi Oe
1999-11-02 20:24 ` David Edelsohn
1999-11-02 16:04   ` Troy Benjegerdes
  -- strict thread matches above, loose matches on Subject: below --
1999-11-04 23:48 Re : " Florent
1999-11-08 14:12 ` Benjamin Herrenschmidt
1999-11-02 18:32 Florent

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