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authorSean Christopherson <sean.j.christopherson@intel.com>2021-02-17 21:51:16 -0800
committerMichael S. Tsirkin <mst@redhat.com>2021-02-23 10:58:42 -0500
commit51124bbfd2ea31ab4d9f9dd5134b67d308518781 (patch)
treee5bd03118ca24e3cb6887b85552f72b0ba94dd5c /tests/data/acpi/q35
parente3fb55f06501b7cffd1df2223eeadaa60e25565d (diff)
i386: acpi: Don't build HPET ACPI entry if HPET is disabled
Omit HPET AML if the HPET is disabled, QEMU is not emulating it and the guest may get confused by seeing HPET in the ACPI tables without a "physical" device present. The change of DSDT when -no-hpet is as follows. @@ -141,47 +141,6 @@ DefinitionBlock ("", "DSDT", 1, "BOCHS " } } - Scope (_SB) - { - Device (HPET) - { - Name (_HID, EisaId ("PNP0103") /* HPET System Timer */) // _HID: Hardware ID - Name (_UID, Zero) // _UID: Unique ID - OperationRegion (HPTM, SystemMemory, 0xFED00000, 0x0400) - Field (HPTM, DWordAcc, Lock, Preserve) - { - VEND, 32, - PRD, 32 - } - - Method (_STA, 0, NotSerialized) // _STA: Status - { - Local0 = VEND /* \_SB_.HPET.VEND */ - Local1 = PRD /* \_SB_.HPET.PRD_ */ - Local0 >>= 0x10 - If (((Local0 == Zero) || (Local0 == 0xFFFF))) - { - Return (Zero) - } - - If (((Local1 == Zero) || (Local1 > 0x05F5E100))) - { - Return (Zero) - } - - Return (0x0F) - } - - Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings - { - Memory32Fixed (ReadOnly, - 0xFED00000, // Address Base - 0x00000400, // Address Length - ) - }) - } - } - Scope (_SB.PCI0) { Device (ISA) Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Message-Id: <66114dead09232d04891b9e5f5a4081e85cc2c4d.1613615732.git.isaku.yamahata@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'tests/data/acpi/q35')
0 files changed, 0 insertions, 0 deletions