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pc: ACPI: expose PRST IO range via _CRS 

.. so OSPM could notice resource conflict if there is any.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2014-01-09 17:36:37 +01:00 committed by Michael S. Tsirkin
parent 562e56a9f8
commit 61a3f63560
1 changed files with 13 additions and 1 deletions
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14
hw/i386/acpi-dsdt-cpu-hotplug.dsl
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@ -16,6 +16,7 @@
/****************************************************************
* CPU hotplug
****************************************************************/
#define CPU_HOTPLUG_RESOURCE_DEVICE PRES
Scope(\_SB) {
/* Objects filled in by run-time generated SSDT */
@ -52,7 +53,8 @@ Scope(\_SB) {
Sleep(200)
}
OperationRegion(PRST, SystemIO, CPU_STATUS_BASE, 32)
#define CPU_STATUS_LEN 32
OperationRegion(PRST, SystemIO, CPU_STATUS_BASE, CPU_STATUS_LEN)
Field(PRST, ByteAcc, NoLock, Preserve) {
PRS, 256
}
@ -89,4 +91,14 @@ Scope(\_SB) {
Increment(Local0)
}
}
Device(CPU_HOTPLUG_RESOURCE_DEVICE) {
Name(_HID, "ACPI0004")
Name(_CRS, ResourceTemplate() {
IO(Decode16, CPU_STATUS_BASE, CPU_STATUS_BASE, 0, CPU_STATUS_LEN)
})
Name(_STA, 0xB) /* present, functioning, decoding, not shown in UI */
}
}