Genode on PC Engines apu2c4 with coreboot
Alexander Boettcher
alexander.boettcher at genode-labs.com
Fri Sep 6 10:51:34 CEST 2019
Sorry, the link was one section off
[0]
https://genode.org/documentation/release-notes/18.05#Accessing_PCI_via_ECAM_MMCONF
On 05.09.19 20:41, Alexander Boettcher 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
>>
>>
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>>
>
>
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--
Alexander Boettcher
Genode Labs
https://www.genode-labs.com - https://www.genode.org
Genode Labs GmbH - Amtsgericht Dresden - HRB 28424 - Sitz Dresden
Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth
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