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Date: Mon, 29 Nov 2010 11:19:29 +0100
From: Gerd Hoffmann <kraxel@redhat.com>
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Subject: [Qemu-devel] Re: [PATCHv6 00/16] boot order specification
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To: Kevin O'Connor <kevin@koconnor.net>
Cc: Anthony Liguori <aliguori@us.ibm.com>, kvm@vger.kernel.org, Gleb Natapov <gleb@redhat.com>, mst@redhat.com, armbru@redhat.com, qemu-devel@nongnu.org, blauwirbel@gmail.com, alex.williamson@redhat.com

   Hi,

>> BTW are you actually aware of any option rom with multiple BCVs and, if
>> yes, how those BCVs differ?
>
> Multiple BCVs - yes.  A SCSI card will define a BCV for each attached
> drive.  I don't have a scsi card myself, but the support was added by
> a user who ran into the problem first hand.

FYI: You can test with a virtual card ;)

lsi emulation in recent qemu versions is good enougth that the original 
boot rom runs.  You can fetch it here:

http://www.lsi.com/DistributionSystem/AssetDocument/files/support/ssp/sdms/Bios/lsi_bios.zip

qemu -drive if=scsi,file=$image -option-rom 8xx_64.rom

Gives you a list like this ...

   Press F12 for boot menu.

   Select boot device:

   1. AHCI/0: QEMU HARDDISK ATA-7 Hard-Disk (8192 MiBytes)
   2. #20 ID00 LUN0 QEMU     QEMU HARD
   3. #20 ID01 LUN0 QEMU     QEMU HARD
   4. DVD/CD [ata1-0: QEMU DVD-ROM ATAPI-4 DVD/CD]
   5. DVD/CD [AHCI/2: QEMU DVD-ROM ATAPI-4 DVD/CD]
   6. gPXE (PCI 00:03.0)

... where entries 2+3 are created by the scsi rom.

HTH,
   Gerd