[SeaBIOS] [PATCH] Support for booting from LSI Logic LSI53C1030, SAS1068, SAS1068e

[Kevin O'Connor]

On Wed, Jan 27, 2016 at 10:45:13AM -0600, Timothy Pearson wrote:
> On 01/27/2016 10:38 AM, Paolo Bonzini wrote:
> > On 27/01/2016 16:57, Kevin O'Connor wrote:
> >> On Wed, Jan 27, 2016 at 03:51:02PM +0100, Paolo Bonzini wrote:
> >>> --- a/src/Kconfig
> >>> +++ b/src/Kconfig
> >>> @@ -208,6 +208,12 @@ menu "Hardware support"
> >>>          default y
> >>>          help
> >>>              Support boot from LSI MegaRAID SAS scsi storage.
> >>> +    config MPT_SCSI
> >>> +        depends on DRIVES
> >>> +        bool "LSI MPT Fusion controllers"
> >>> +        default y
> >>> +        help
> >>> +            Support boot from LSI MPT Fusion scsi storage.
> >>
> >> Unless there is good reason to believe this will work on real
> >> hardware, I think this should depend on QEMU_HARDWARE and the
> >> mpt_scsi_setup() function should check runningOnQEMU().
> > 
> > It should work on real hardware; the submission of requests works more
> > or less the same as for a full-blown driver.  I wouldn't have problems
> > with adding the dependency though, since real hardware would come with
> > an option ROM.
> 
> This I might be able to test directly on real hardware.  Certain systems
> cannot use the LSI option ROM (coreboot-based systems in particular), so
> I am keen on seeing this work outside of QEMU.
> 
> I will test and report back, though it may be a few days before I can do
> that.

Thanks!  FYI, there are two existing LSI drivers (CONFIG_LSI_SCSI and
CONFIG_MEGASAS) as well.  And, if you want to test CONFIG_LSI_SCSI
support on real hardware, you'll need to remove its check for
CONFIG_COREBOOT in Kconfig and remove the check for runningOnQEMU() in
lsi_scsi_setup().

Also, if there are option roms on these cards, you'll probably want to
set pci->have_driver in init_lsi_scsi(), init_megasas(), and/or
init_mpt_scsi() to prevent SeaBIOS from running the optionrom once the
driver has been found.

-Kevin