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

[Park, Aiden]

Hi Bin,

> -----Original Message-----
> From: Park, Aiden
> Sent: Sunday, August 25, 2019 9:56 PM
> To: 'Bin Meng' <bmeng.cn at gmail.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 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!
> 
Now, Slim Bootloader supports -smp option on QEMU with the latest code base.
Thanks again for bringing this up.

> > Regards,
> > Bin
> 
> Best Regards,
> Aiden

Best Regards,
Aiden