Genode on PC Engines apu2c4 with coreboot

Sid Hussmann sid.hussmann at gapfruit.com
Mon Sep 9 08:51:17 CEST 2019 

Good morning,

coreboot now sends the MCFG table and I'm able to access all PCIe devices. 
Thanks y'all for the support!

Cheers,
Sid


On 9/8/19 7:35 PM, Sid Hussmann wrote:
> Hi Jean-Philippe, and Michal,
> 
> thanks for pointing Michal to this thread! And Michal, thank you so much for the quick fix!
> I just built the coreboot image including your patch with the MCFG table.
> Unfortunately I don't have a device with me.
> Will test tomorrow morning and give feedback then.
> 
> Cheers,
> Sid
> 
> 
> On 9/8/19 2:25 PM, Alexander Boettcher wrote:
>> Hello Jean-Philippe,
>>
>> thanks (and of course the pcengine maintainer) for the efforts. Let's
>> see what Sid will tell us.
>>
>> Alex.
>>
>> On 06.09.19 20:52, Jean-Philippe Ouellet wrote:
>>> 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
>>>>
>>>> Genode Labs GmbH - Amtsgericht Dresden - HRB 28424 - Sitz Dresden
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>>>>
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>>
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