[U-Boot] [PATCH 1/1] doc: slimbootloader: Update Linux booting steps on QEMU

[Park, Aiden]

Hi Bin,

> -----Original Message-----
> From: Bin Meng [mailto:bmeng.cn at gmail.com]
> Sent: Sunday, August 25, 2019 9:47 PM
> To: Park, Aiden <aiden.park at intel.com>
> Cc: Andy Shevchenko <andy.shevchenko at gmail.com>; u-boot at lists.denx.de
> Subject: Re: [PATCH 1/1] doc: slimbootloader: Update Linux booting steps on
> QEMU
> 
> Hi Aiden,
> 
> On Mon, Aug 26, 2019 at 11:20 AM Park, Aiden <aiden.park at intel.com> wrote:
> >
> > Hi Bin,
> >
> > > -----Original Message-----
> > > From: Bin Meng [mailto:bmeng.cn at gmail.com]
> > > Sent: Sunday, August 25, 2019 7:36 PM
> > > To: Park, Aiden <aiden.park at intel.com>
> > > Cc: Andy Shevchenko <andy.shevchenko at gmail.com>;
> > > u-boot at lists.denx.de
> > > Subject: Re: [PATCH 1/1] doc: slimbootloader: Update Linux booting
> > > steps on QEMU
> > >
> > > Hi Aiden,
> > >
> > > On Fri, Aug 23, 2019 at 5:31 AM Park, Aiden <aiden.park at intel.com> wrote:
> > > >
> > > > Add steps to test Linux booting on QEMU with Yocto image.
> > > >
> > > > Signed-off-by: Aiden Park <aiden.park at intel.com>
> > > > ---
> > > >  doc/board/intel/slimbootloader.rst | 22 ++++++++++++++++++++++
> > > >  1 file changed, 22 insertions(+)
> > > >
> > > > diff --git a/doc/board/intel/slimbootloader.rst
> > > > b/doc/board/intel/slimbootloader.rst
> > > > index 07c9b126f7..375e676804 100644
> > > > --- a/doc/board/intel/slimbootloader.rst
> > > > +++ b/doc/board/intel/slimbootloader.rst
> > > > @@ -86,6 +86,28 @@ The PayloadId can be any 4 Bytes value.
> > > >
> > > >     $ qemu-system-x86_64 -machine q35 -nographic -serial mon:stdio
> > > > -pflash Outputs/qemu/SlimBootloader.bin
> > > >
> > > > +Test Linux booting on QEMU target
> > > > +---------------------------------
> > > > +
> > > > +Let's use LeafHill (APL) Yocto image for testing.
> > > > +Download it from
> > > > +http://downloads.yoctoproject.org/releases/yocto/yocto-
> > > 2.0/machines/leafhill/.
> > > > +
> > > > +1. Prepare Yocto hard disk image::
> > > > +
> > > > +   $ wget http://downloads.yoctoproject.org/releases/yocto/yocto-
> > > 2.0/machines/leafhill/leafhill-4.0-jethro-2.0.tar.bz2
> > > > +   $ tar -xvf leafhill-4.0-jethro-2.0.tar.bz2
> > > > +   $ ls -l
> > > > + leafhill-4.0-jethro-2.0/binary/core-image-sato-intel-corei7-64.h
> > > > + ddim
> > > > + g
> > >
> > > nits: this line is not necessary
> > >
> > This is just to show unzipped file path and make sure the file exists properly.
> >
> > > > +
> > > > +2. Launch Slim Bootloader on QEMU with disk image::
> > > > +
> > > > +   $ qemu-system-x86_64 -machine q35 -nographic -serial mon:stdio
> > > > + -pflash Outputs/qemu/SlimBootloader.bin -drive
> > > > + id=mydrive,if=none,file=/path/to/core-image-sato-intel-corei7-64
> > > > + .hdd img,format=raw -device ide-hd,drive=mydrive
> > > > +
> > > > +3. Update boot environment values on shell::
> > > > +
> > > > +   => setenv bootfile vmlinuz
> > > > +   => setenv bootdev scsi
> > > > +   => boot
> > >
> > > I followed all the instructions here, and I see the same problem as
> > > I reported
> > > before: Invalid Boot Flag.
> > >
> > > => setenv bootfile vmlinuz
> > > => setenv bootdev scsi
> > > => boot
> > > scanning bus for devices...
> > > SATA link 0 timeout.
> > > SATA link 1 timeout.
> > > SATA link 2 timeout.
> > > SATA link 3 timeout.
> > > SATA link 4 timeout.
> > > Target spinup took 0 ms.
> > > AHCI 0001.0000 32 slots 6 ports 1.5 Gbps 0x3f impl SATA mode
> > > flags: ncq only
> > > Error: Invalid Boot Flag (found 0x0000, expected 0xaa55)
> > >
> > This has a dependency on a patch -
> > https://patchwork.ozlabs.org/patch/1150306/
> > which is still waiting to be applied.
> >
> 
> Thanks, now I am able to boot the Yocto Linux kernel image.
> 
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
> Tested-by: Bin Meng <bmeng.cn at gmail.com>
> 
Thanks Bin for your testing.

> However when testing, I noticed that SlimBootloader does not support
> multicore? If I passed "-smp 2" or "-smp 4" to QEMU, it failed to boot. Logs
> below:
> 
> MP Init (Wakeup)
> MP Init (Run)
> Detected 2 CPU threads
>  CPU  0 APIC ID: 0
>  CPU  1 APIC ID: 1
> PCI Enum
> Call FspNotifyPhase(20) ... Success
> ACPI Init
> Less MADT entries than Number of cores..
> ACPI Ret: Out of Resources
> Error: Out of Resources
> 
> ACPI error !
> STAGE_2: System halted!
>
We simply verified a single core system only with QEMU.
Let me fix this MADT issue on Slim Bootloader side.
Thanks a lot for bringing up this issue!
 
> Regards,
> Bin

Best Regards,
Aiden