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authorIgor Mammedov <imammedo@redhat.com>2014-01-09 17:36:37 +0100
committerMichael S. Tsirkin <mst@redhat.com>2014-01-26 13:11:44 +0200
commit61a3f63560ccd2b5e8c9134e9213a1cff36f26bf (patch)
treec7bef41880d8296d926df4eade314816ead433ca
parent562e56a9f8e627b2a4ef60037507361ce3cb4e6d (diff)
downloadqemu-arm-61a3f63560ccd2b5e8c9134e9213a1cff36f26bf.tar.gz
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>
-rw-r--r--hw/i386/acpi-dsdt-cpu-hotplug.dsl14
1 files changed, 13 insertions, 1 deletions
diff --git a/hw/i386/acpi-dsdt-cpu-hotplug.dsl b/hw/i386/acpi-dsdt-cpu-hotplug.dsl
index 1dfbb4f086..f91eafd008 100644
--- a/hw/i386/acpi-dsdt-cpu-hotplug.dsl
+++ b/hw/i386/acpi-dsdt-cpu-hotplug.dsl
@@ -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 */
+ }
}