Hi Jiewen, After I looked into the UefiPayload example, I have a few questions on how to implement things in OvmfPkg:
- Do you expect EFI_HOB_PLATFORM_INFO to be extended with two additional fields AcpiTimerAddress and AcpiShutdownAddress? Or do you think the ACPI_BOARD_INFO should be copied over from the the UefiPayload package? - Is InitializePlatform() from OvmfPkg/PlatformPei/Platform.c the correct place where the FADT parsing should happen? I would need the platform info HOB to be accessible from OvmfPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.c, OvmfPkg/Library/AcpiTimerLib/BaseRomAcpiTimerLib.c, OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.c, OvmfPkg/Library/ResetSystemLib/DxeResetShutdown.c, and OvmfPkg/Library/ResetSystemLib/BaseResetShutdown.c. Thanks, Sebastien On Tue, 2022-09-06 at 15:57 +0000, Yao, Jiewen wrote: > One good example is in UefiPayloadPkg. > > 1. At entrypoint, the UefiPayload parses the ACPI table and build > gUefiAcpiBoardInfoGuid.https://github.com/tianocore/edk2/blob/mas > ter/UefiPayloadPkg/UefiPayloadEntry/AcpiTable.c#L23 > > 1. Later, AcpiTimer driver uses the ACPI data in > gUefiAcpiBoardInfoGuid.https://github.com/tianocore/edk2/blob/mas > ter/UefiPayloadPkg/Library/AcpiTimerLib/AcpiTimerLib.c#L49 > > 1. Other driver may also use the ACPI data, such as > PciExpressAddress. (from > MCFG).https://github.com/tianocore/edk2/blob/master/UefiPayloadPk > g/Library/PciSegmentInfoLibAcpiBoardInfo/PciSegmentInfoLibAcpiBoa > rdInfo.c#L55 > > > Thank you > Yao Jiewen > > > From: Boeuf, Sebastien <sebastien.bo...@intel.com> > Sent: Tuesday, September 6, 2022 11:41 PM > To: Yao, Jiewen <jiewen....@intel.com> > Cc: Justen, Jordan L <jordan.l.jus...@intel.com>; kra...@redhat.com; > devel@edk2.groups.io > Subject: Re: [PATCH v2] OvmfPkg: Update I/O port related to ACPI > devices for CloudHv > > Hi Jiewen, > > We patched Cloud Hypervisor to support both I/O ports for at least > two versions. And of course at some point users will have to rely on > latest CloudHv binary (which we always build). > > One improvement could be to retrieve the I/O ports addresses from the > FADT table. Do you know if there's some code already doing that in > OVMF? > > Thanks, > Sebastien > From: Yao, Jiewen <jiewen....@intel.com> > Sent: Tuesday, September 6, 2022 4:27 PM > To: Boeuf, Sebastien <sebastien.bo...@intel.com> > Cc: Justen, Jordan L <jordan.l.jus...@intel.com>;kra...@redhat.com > <kra...@redhat.com>;devel@edk2.groups.io <devel@edk2.groups.io> > Subject: RE: [PATCH v2] OvmfPkg: Update I/O port related to ACPI > devices for CloudHv > > This seems a big incompatible change. > > I feel this is weird to hardcode the configuration here. > > How the OVMF binary knows it runs on a new CloudHv or old CloudHv? > > Can we have a mechanism to detect the data at runtime? E.g. read some > PCI register ? > > > > > From: Boeuf, Sebastien <sebastien.bo...@intel.com> > Sent: Tuesday, September 6, 2022 10:08 PM > To: Yao, Jiewen <jiewen....@intel.com> > Cc: Justen, Jordan L <jordan.l.jus...@intel.com>;kra...@redhat.com; > devel@edk2.groups.io > Subject: Re: [PATCH v2] OvmfPkg: Update I/O port related to ACPI > devices for CloudHv > > Hi Jiewen, > > Do you think this could be merged? > > Thanks, > Sebastien > From: Boeuf, Sebastien <sebastien.bo...@intel.com> > Sent: Friday, August 19, 2022 11:59 AM > To: devel@edk2.groups.io <devel@edk2.groups.io> > Cc: Yao, Jiewen <jiewen....@intel.com>; Justen, Jordan L > <jordan.l.jus...@intel.com>;kra...@redhat.com <kra...@redhat.com>; > Boeuf, Sebastien <sebastien.bo...@intel.com> > Subject: [PATCH v2] OvmfPkg: Update I/O port related to ACPI devices > for CloudHv > > From: Sebastien Boeuf <sebastien.bo...@intel.com> > > Both ACPI shutdown and ACPI PM timer devices has been moved to > different > port addresses in the latest version of Cloud Hypervisor. These > changes > need to be reflected on the OVMF firmware. > > Acked-by: Gerd Hoffmann <kra...@redhat.com> > Signed-off-by: Sebastien Boeuf <sebastien.bo...@intel.com> > --- > OvmfPkg/Include/IndustryStandard/CloudHv.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/OvmfPkg/Include/IndustryStandard/CloudHv.h > b/OvmfPkg/Include/IndustryStandard/CloudHv.h > index d31ecc9eec..527c236f48 100644 > --- a/OvmfPkg/Include/IndustryStandard/CloudHv.h > +++ b/OvmfPkg/Include/IndustryStandard/CloudHv.h > @@ -16,12 +16,12 @@ > // > > // ACPI timer address > > // > > -#define CLOUDHV_ACPI_TIMER_IO_ADDRESS 0xb008 > > +#define CLOUDHV_ACPI_TIMER_IO_ADDRESS 0x0608 > > > > // > > // ACPI shutdown device address > > // > > -#define CLOUDHV_ACPI_SHUTDOWN_IO_ADDRESS 0x03c0 > > +#define CLOUDHV_ACPI_SHUTDOWN_IO_ADDRESS 0x0600 > > > > // > > // 32-bit MMIO memory hole base address > --------------------------------------------------------------------- Intel Corporation SAS (French simplified joint stock company) Registered headquarters: "Les Montalets"- 2, rue de Paris, 92196 Meudon Cedex, France Registration Number: 302 456 199 R.C.S. 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