[OpenBIOS] Fail to boot a macosx 10.5 disk image

[Cédric Le Goater]

Hello Mark, 

On 06/08/2016 08:52 PM, Mark Cave-Ayland wrote:
> On 08/06/16 14:48, Cédric Le Goater wrote:
> 
>> So it is hd:3 and then, openbios dies directly :  
>>
>> 	...
>> 	IN: 
>> 	0xfff0d6c8:  mr      r28,r3
>> 	0xfff0d6cc:  add     r30,r30,r3
>> 	0xfff0d6d0:  add     r31,r31,r3
>> 	0xfff0d6d4:  b       0xfff0d6a0
>>
>> 	IN: 
>> 	0xfff0d6a0:  mr      r3,r29
>> 	0xfff0d6a4:  li      r5,0
>> 	0xfff0d6a8:  mr      r6,r30
>> 	0xfff0d6ac:  bl      0xfff279e8
>>
>> 	IN: 
>> 	0x00000300:  .long 0x0
>>
>> 	IN: 
>> 	0x00000700:  .long 0x0
>>
>> which is this loop in bootcode_load() :
>>
>>     ...
>>     bootcode = loadbase;
>>     offset = 0;
>>     
>>     while(1) {
>>         if (seek_io(fd, offset) == -1)
>>             break;
>>         count = read_io(fd, (void *)bootcode, 512);
>>         offset += count;
>>         bootcode += count;
>>     }
>>     ...
> 
> Hi Cédric,
> 
> As a starting point, can you provide the contents of the root of the HD
> image as given with:
> 
> dir hd:3,\

0 > dir hd:3,\
      7065 2006-11-05 15:39:15  .\debugdata\debug.txt
         0 2006-01-10 13:37:45  .com_symantec_symfs_private\
     12292 2002-05-16 10:37:41  .DS_Store
    458752 2005-10-20 18:00:21  .hotfiles.btree
   8388608 2005-07-12 03:37:09  .journal
      4096 2005-07-12 03:37:09  .journal_info_block
         0 2005-07-12 04:48:20  .Spotlight-V100\
         0 2006-01-09 10:49:19  .symSchedScanLockxz
         0 2005-07-12 04:53:28  .Trashes\
         0 2005-03-22 00:01:29  .vol\
         0 2005-07-11 09:36:46  Applications\
         0 2005-07-11 17:21:58  Applications (Mac OS 9)\
       512 2005-12-28 17:51:55  Auth-DigitalPerformer 4.0
         0 2005-12-02 17:25:12  automount\
         0 2005-07-11 10:28:40  bin\
         0 2005-05-28 17:05:33  cores\
    133120 2005-07-12 04:48:01  Desktop DB
    715698 2005-07-12 04:48:01  Desktop DF
         0 2003-10-32 14:57:45  Desktop Folder\
         0 2005-05-28 17:05:33  dev\
         0 2008-09-07 00:40:24  Developer\
         0 2005-11-15 13:13:52  Dossier Systeme\
        11 2005-07-12 03:37:16  etc
  21579557 2006-09-19 08:26:22  gmon.out
        60 2005-12-02 11:59:32  Guides de lutilisateur et informations
       297 2005-01-09 16:29:43  Installer Log File
         0 2005-07-11 10:22:09  Library\
         9 2015-05-28 12:06:55  mach
    604360 2015-05-28 12:06:55  mach.sym
   4352200 2007-10-12 01:26:11  mach_kernel
         0 2005-11-17 19:04:29  Macintosh HD
  13027540 2006-01-09 10:48:44  NAVMac800QSFile
         0 2005-05-28 17:05:33  Network\
     29150 2005-01-18 09:35:39  Office 2004 11.1.0 Update Log
         0 2005-07-11 10:19:09  private\
         0 2005-07-11 10:28:00  sbin\
         0 2006-11-02 08:15:23  sblibng.log
         0 2005-07-11 09:36:30  System\
         0 2004-10-02 10:23:16  TheVolumeSettingsFolder\
        11 2005-07-12 03:37:52  tmp
         0 2005-03-21 23:57:33  Users\
         0 2005-07-11 09:39:44  usr\
        11 2005-07-12 03:37:59  var
         0 2005-03-22 00:01:29  Volumes\
         0 2005-07-12 03:30:28  HFS+ Private Data\
 ok
0 > 

That system was updated from Mac OS 9. That might be the issue.

> (it's much easier to cut/paste if you run qemu-system-ppc with
> -nographic). This is just to ensure that a HFS+ FS isn't accidentally
> getting picked up as a HFS filesystem (some driver partitions are set up
> this way).
>
>> How do I add more logging with openbios ? 
> 
> You should find that in -nographic mode Forth errors are logged to the
> console - does anything obvious stand out? If not, you'd probably have
> to look at modifying OpenBIOS to dump out the 10.5 bootloader to see
> what it's trying to do.

yes. I will look into that next.

Using -nographic, I get more info : "Not a bootable ELF image". That's 
something to look for ! 


Thanks,

C.