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ArmVirtPkg/ArmVirtQemu: limit ACPI support to v5.0 and higher 

The ACPI spec predates the AARCH64 architecture by 5 versions, so there
is no point in supporting anything below v5.0. So set the PCD that
controls the ACPI table generation to the appropriate value.

Note that the current consumers of this PCD only check whether bit 1
is set or not (i.e., ACPI v1.0b), but this may change in the future,
so let's choose a meaningful value right away.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Ard Biesheuvel 2016-02-18 20:51:08 +01:00
parent f9bbb8d9c3
commit e069278905
1 changed files with 4 additions and 0 deletions
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4
ArmVirtPkg/ArmVirtQemu.dsc
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@ -177,6 +177,10 @@
# point only, for entry point versions >= 3.0.
gEfiMdeModulePkgTokenSpaceGuid.PcdSmbiosEntryPointProvideMethod|0x2
# ACPI predates the AARCH64 architecture by 5 versions, so
# we only target OSes that support ACPI v5.0 or later
gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiExposedTableVersions|0x20
[PcdsDynamicDefault.common]
## If TRUE, OvmfPkg/AcpiPlatformDxe will not wait for PCI
# enumeration to complete before installing ACPI tables.