Ard Biesheuvel 7e5f1b6738 ArmVirtPkg/PlatformHasAcpiDtDxe: allow guest level ACPI disable override ... In general, we should not present two separate (and inevitably different) hardware descriptions to the OS, in the form of ACPI tables and a device tree blob. For this reason, we recently added the logic to ArmVirtQemu to only expose the ACPI 2.0 entry point if no DT binary is being passed, and vice versa. However, this is arguably a regression for those who relied on DT descriptions being available, even if the former behavior can be restored by passing the -no-acpi switch to QEMU. So allow a secret handshake with the UEFI Shell, to set a variable that will result in ACPI to be disabled on subsequent boots even if -no-acpi was not passed on the QEMU command line. setvar -nv -bs -guid 50bea1e5-a2c5-46e9-9b3a-59596516b00a ForceNoAcpi =01 To delete the variable and revert to the old situation, simply omit the value after the = setvar -nv -bs -guid 50bea1e5-a2c5-46e9-9b3a-59596516b00a ForceNoAcpi = Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Tested-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com>		2017-03-31 11:44:36 +01:00
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PlatformHasAcpiDtDxe.c	ArmVirtPkg/PlatformHasAcpiDtDxe: allow guest level ACPI disable override	2017-03-31 11:44:36 +01:00
PlatformHasAcpiDtDxe.inf	ArmVirtPkg/PlatformHasAcpiDtDxe: allow guest level ACPI disable override	2017-03-31 11:44:36 +01:00