DiskOnChip 2000 and Millenium support in GRUB bootloader

[Vadim Khmelnitsky]

[Ilguiz]
Vadim, should the Millennium SPL check sum include IPL?

[Vadim]
No . IPL of Millennium chip copies 7K of data out of offset 0x400 and
calculates the checksum  , which should be 0x55 . If it's not 0x55 IPL
returns to BIOS without executing SPL .

Vadim
-----Original Message-----
From: Ilguiz Latypov [mailto:ilatypov at superbt.com]
Sent: Fri, February 22, 2002 2:39 PM
To: Mark Meade
Cc: linux-mtd at lists.infradead.org
Subject: Re: DiskOnChip 2000 and Millenium support in GRUB bootloader 



Mark,

On Fri, 22 Feb 2002, Mark Meade wrote:

> The doc_loadbios output to /dev/mtd0 is off by 512 bytes (when I use an
> offset of 1024):

Thanks for the correction.   I adjusted your patch to take into account 
the almost impossible case when IPL is bigger than erase sector.

> My system now recognizes that something is there, but refuses to boot:
>     Searching for boot record from SCSI: Not Found.

Perhaps, IPL refuses to execute SPL (GRUB's doc_stage1) because the
doc_stage1's check sum didn't include IPL itself.  

Vadim, should the Millennium SPL check sum include IPL?

The other thought is if the stage1 code can be placed instead of IPL.

Ilguiz



______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/