Genode on PC Engines apu2c4 with coreboot

Jean-Philippe Ouellet jpo at vt.edu
Fri Sep 6 20:52:00 CEST 2019 

Fortunately, the pcengines coreboot maintainers are awesome people and
interested in enabling cool use cases :)

I pointed them at this thread and briefly described the situation &
motivation, and a MCFG table is now pending review! [1]

If you aren't afraid of reflashing, you may already be unblocked :)

Cheers,
Jean-Philippe

[1]: https://review.coreboot.org/c/coreboot/+/35286

On Thu, Sep 5, 2019 at 11:41 AM Alexander Boettcher
<alexander.boettcher at genode-labs.com> wrote:
>
> Hello Sid,
>
> because of [0] you need with 18.05 a valid MCFG ACPI table to run Genode
> on x86. The general answer is, that coreboot or companion must provide
> the tables, otherwise you are out of luck. Maybe the hints at [1] are
> helpful to start investigation for you coreboot build ?
>
> Cheers,
>
> Alex.
>
> [0]
> https://genode.org/documentation/release-notes/18.05#Kernel-agnostic_platform-information_handling
> [1] https://www.coreboot.org/ACPI#acpi_fill_mcfg
>
> On 05.09.19 16:06, Sid Hussmann wrote:
> > Dear Genodians,
> >
> > I'm trying to enable Genode on the apu2c4. I successfully could run the test-pci component using branch [1] based on Genode 17.11:
> >
> > However, using the genodelabs/master branch results in a ACPI parsing error:
> > ´[init -> platform_drv] Error: ACPI report parsing error.´
> >
> > I set the report_rom to verbose and I noticed following differences:
> >
> > # Working version on apu2c4 [1]:
> >
> > ´´´
> > Genode 17.11-103-gd0028480b <local changes>
> > 4039 MiB RAM and 63253 caps assigned to init
> > [init -> test-pci] --- Platform test started ---
> > [init -> acpi_drv] Found MADT
> > [init -> acpi_drv] MADT IRQ 0 -> GSI 2 flags: 0
> > [init -> acpi_drv] MADT IRQ 9 -> GSI 9 flags: 15
> > [init -> acpi_report_rom] report 'acpi_drv -> acpi'
> > [init -> acpi_report_rom]   <acpi>
> > [init -> acpi_report_rom]       <fadt features="0x3c5a5" reset_type="0x1000801" reset_addr="0xcf9" reset_value="0x6"/>
> > [init -> acpi_report_rom]       <irq_override irq="9" gsi="9" flags="0xf"/>
> > [init -> acpi_report_rom]       <irq_override irq="0" gsi="2" flags="0x0"/>
> > [init -> acpi_report_rom]       <routing gsi="0x2b" bridge_bdf="0x15" device="0x0" device_pin="0x3"/>
> > [init -> acpi_report_rom]       <routing gsi="0x2a" bridge_bdf="0x15" device="0x0" device_pin="0x2"/>
> > [init -> acpi_report_rom]       <routing gsi="0x29" bridge_bdf="0x15" device="0x0" device_pin="0x1"/>
> > ...
> > [init -> acpi_report_rom]       <routing gsi="0x2c" bridge_bdf="0xc0" device="0x1" device_pin="0x0"/>
> > [init -> acpi_report_rom]   </acpi>
> > [init -> test-pci] 0:0.0 class=0x600 vendor=0x1022 (unknown) device=0x1566
> > [init -> test-pci] 0:2.0 class=0x600 vendor=0x1022 (unknown) device=0x156b
> > ...
> >
> > ´´´
> >
> >
> > # Broken version on apu2c4 (current master):
> >
> > ´´´
> > Genode 19.08 <local changes>
> > 4027 MiB RAM and 63253 caps assigned to init
> > [init -> test-pci] --- Platform test started ---
> > [init -> acpi_drv] Found MADT
> > [init -> acpi_drv] MADT IRQ 0 -> GSI 2 flags: 0
> > [init -> acpi_drv] MADT IRQ 9 -> GSI 9 flags: 15
> > [init -> acpi_drv] XSDT OEM 'CORE  ', table id 'COREBOOT', revision 0, creator 'CORE' (0)
> > [init -> acpi_report_rom] report 'acpi_drv -> acpi'
> > [init -> acpi_report_rom]   <acpi>
> > [init -> acpi_report_rom]       <root_bridge bdf="0xc0"/>
> > [init -> acpi_report_rom]       <irq_override irq="9" gsi="9" flags="0xf"/>
> > [init -> acpi_report_rom]       <irq_override irq="0" gsi="2" flags="0x0"/>
> > [init -> acpi_report_rom]       <routing gsi="0x2b" bridge_bdf="0x15" device="0x0" device_pin="0x3"/>
> > [init -> acpi_report_rom]       <routing gsi="0x2a" bridge_bdf="0x15" device="0x0" device_pin="0x2"/>
> > [init -> acpi_report_rom]       <routing gsi="0x29" bridge_bdf="0x15" device="0x0" device_pin="0x1"/>
> > ...
> > [init -> acpi_report_rom]       <routing gsi="0x2c" bridge_bdf="0xc0" device="0x1" device_pin="0x0"/>
> > [init -> acpi_report_rom]   </acpi>
> > [init -> platform_drv] Error: ACPI report parsing error.
> > [init -> acpi_drv] SMBIOS table (entry point: 0x163ad0 structures: 0xdffd7020)
> > [init -> platform_drv] Error: Uncaught exception of type 'int'
> > [init -> platform_drv] Warning: abort called - thread: ep
> > [init -> acpi_report_rom] report 'acpi_drv -> smbios_table'
> > [init -> acpi_report_rom]   _SM_b▒
> > ´´´
> >
> >
> > # on QEMU (current master):
> >
> > ´´´
> > Genode 19.08 <local changes>
> > 471 MiB RAM and 63253 caps assigned to init
> > [init -> test-pci] --- Platform test started ---
> > [init -> acpi_drv] Found MADT
> > [init -> acpi_drv] MADT IRQ 0 -> GSI 2 flags: 0
> > [init -> acpi_drv] MADT IRQ 5 -> GSI 5 flags: 13
> > [init -> acpi_drv] MADT IRQ 9 -> GSI 9 flags: 13
> > [init -> acpi_drv] MADT IRQ 10 -> GSI 10 flags: 13
> > [init -> acpi_drv] MADT IRQ 11 -> GSI 11 flags: 13
> > [init -> acpi_drv] Found MCFG
> > [init -> acpi_drv] MCFG BASE 0xb0000000 seg 0x0 bus 0x0-0xff
> > [init -> acpi_drv] RSDT OEM 'BOCHS ', table id 'BXPCRSDT', revision 1, creator 'BXPC' (1)
> > [init -> acpi_report_rom] report 'acpi_drv -> acpi'
> > [init -> acpi_report_rom]   <acpi>
> > [init -> acpi_report_rom]       <root_bridge bdf="0x0"/>
> > [init -> acpi_report_rom]       <bdf start="0" count="65536" base="0xb0000000"/>
> > [init -> acpi_report_rom]       <irq_override irq="11" gsi="11" flags="0xd"/>
> > [init -> acpi_report_rom]       <irq_override irq="10" gsi="10" flags="0xd"/>
> > [init -> acpi_report_rom]       <irq_override irq="9" gsi="9" flags="0xd"/>
> > [init -> acpi_report_rom]       <irq_override irq="5" gsi="5" flags="0xd"/>
> > [init -> acpi_report_rom]       <irq_override irq="0" gsi="2" flags="0x0"/>
> > [init -> acpi_report_rom]   </acpi>
> > [init -> platform_drv] ECAM/MMCONF range 00:00.0-ff:1f.7 - addr [00000000b0000000,00000000c0000000)
> > [init -> acpi_drv] SMBIOS table (entry point: 0x165710 structures: 0xf5730)
> > [init -> platform_drv] Root bridge: 00:00.0
> > [init -> acpi_report_rom] report 'acpi_drv -> smbios_table'
> > [init -> acpi_report_rom]   _SM_W
> > [init -> test-pci] 0:0.0 class=0x600 vendor=0x8086 (Intel) device=0x29c0
> > [init -> test-pci] 0:1.0 class=0x300 vendor=0x1234 (unknown) device=0x1111
> > ...
> >
> > ´´´
> >
> >
> > Cherry-picking from [1] to the master branch didn't help.
> >
> > On QEMU I noticed a ´bdf´ node in the acpi_report. ´platform_drv´ is expecting this node.
> > The ´bdf´ node is written in ´Acpi::generate_report()´ but only if there is an entry in the ´Pci_config_space´ list.
> > The only function that inserts something to that list is ´Table_wrapper::parse_mcfg()´, which is called from ´Acpi_table::_parse_tables()´ in case one of the tables has the "MCFG" signature. However, none of the tables seem to have that signature.
> >
> > And now I'm lost.
> > How do I move on?
> >
> > Cheers,
> > Sid
> >
> >
> > [1] https://github.com/chelmuth/genode/commits/cobalt
> >
> >
> > _______________________________________________
> > Genode users mailing list
> > users at lists.genode.org
> > https://lists.genode.org/listinfo/users
> >
>
> --
> Alexander Boettcher
> Genode Labs
>
> https://www.genode-labs.com - https://www.genode.org
>
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