A question about zImage when booting from HD

[Gabriel Paubert]

On Mon, 6 Sep 1999, Simone Piccardi wrote:

> 
> Hi, 
> after some time, I'm retrying to boot my board (a MVME2431) from the HD,
> but still I have to use NFS. I partitioned the HD as:
> 
> Disk /dev/sda: 64 heads, 32 sectors, 8683
> cylinders                             
> Units = cylinders of 2048 * 512
> bytes                                           
>                                                                                 
>    Device Boot    Start       End    Blocks   Id 
> System                        
> /dev/sda1             1      8620   8826864   83 
> Linux                         
> /dev/sda2          8621      8680     61440   82  Linux
> swap                    
> /dev/sda3   *      8681      8683      3072   41  PPC PReP
> Boot                 
> 
> then I create an image (make zImage) that is normally working when
> booted by NFS (could be this the problem? there are some option to set
> during the kernel compilation?) and copied it to /dev/sda3 using dd.
> 
> But when i tried to boot from the HD I obtain this:
> PPC4-Bug>ioi                                                                    
> I/O Inquiry
> Status:                                                             
> CLUN  DLUN  CNTRL-TYPE  DADDR  DTYPE  RM 
> Inquiry-Data                          
>    1     0  PC8477      0      $00    Y  
> <None>                                
>   10    50  NCR53C825   5      $00    N   SEAGATE  ST39140W        
> 1487        
> PPC4-Bug>pboot 10 50
> 0                                                          
> Booting from: NCR53C825, Controller 10, Drive
> 50                                
> Device Name :
> /pci at 80000000/pci1000,3 at 10,0/harddisk at 5,0                         
> Loading: Operating
> System                                                       
>                                                                                 
> IPL Size Exceeds Free-Available
> Memory:                                         
> IPL Size              =AC444000
> (&-1404813312)                                  
> Free-Available Memory =01F74000
> (&32980992)                                     
> 
> I looked both in /dev/sda3 and in
> /usr/src/linux/arch/ppc/prepboot/zImage and what I get is (the results
> were the same):
> 
> [root at vmesez1 /root]# od -N 10000 -Ad -tx /dev/sda3
> 0000000 48000400 00000000 00000000 00000000
> 0000016 00000000 00000000 00000000 00000000
> *
> 0000432 00000000 00000000 00000000 00008000
> 0000448 02004101 124f0000 0000b004 00000000
> 0000464 00000000 00000000 00000000 00000000
> *
> 0000496 00000000 00000000 00000000 000055aa 
> 0000512 00040000 6c5f0900 00004c69 6e757800
> 0000528 00000000 00000000 00000000 00000000
> * 
> 0001024 48000005 7c2802a6 38000000 9401fd8c 
> 0001040 bf410008 48000005 7fc802a6 801e0358
> ...
> 
> and I cannot figure from where I get this IPL Size =AC444000. If I
> understand right what is written in the PPCBug manual it seems that the
> code start at 1024 (byte 512), and the lenght is 0x095f6c (byte 516),
> nothing related to AC444000; I'm missing something in the partion? Or
> I'm using a wrong image?

Well, I don't think so. I'm also very surprised since I have a very
similar setup and I have never seen this command fail (NetBoot is another
story), the length in /dev/sda3 is correct. 

What is your verssion of PPCBug ? 

Can you try PBOOT;A and PBOOT;V ? 

	Regards,
	Gabriel.

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