[PATCH RFC v2 1/2] ec: add ASL for ACPI Embedded Controller

[liguang]

Signed-off-by: liguang 
---
 src/acpi-dsdt-isa.dsl |   26 ++++++++++++++++++++++++++
 1 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/src/acpi-dsdt-isa.dsl b/src/acpi-dsdt-isa.dsl
index 23761db..2b9c3a0 100644
--- a/src/acpi-dsdt-isa.dsl
+++ b/src/acpi-dsdt-isa.dsl
@@ -99,4 +99,30 @@ Scope(_SB.PCI0.ISA) {
             IRQNoFlags() { 3 }
         })
     }
+
+	Device (EC0) {
+		Name(_HID, EISAID ("PNP0C09"))
+		Name(_UID, 1)
+
+		Method(_CRS, 0) {
+			Name(BFFR, ResourceTemplate() {
+				IO(Decode16, 0x62, 0x62, 0, 1)      // ACPI DATA IN/OUT
+				IO(Decode16, 0x66, 0x66, 0, 1)      // CMD/STS
+	        })
+			Return(BFFR)
+		}
+
+		OperationRegion(ECFD, EmbeddedControl, 0, 0xFF)
+		Field(ECFD, ByteAcc, Lock, Preserve) {
+			Offset(1),
+			CPUS,   8,      // 1, CPU plug/unplug status map
+			CPUN,   8,      // 2, CPU index
+		}
+
+		Name(_GPE, 3)
+
+		Method(_Q01) {
+		}
+	}
+
 }

[PATCH RFC v2 2/2] use EC space instead of specific systemio for cpu hotplug

[liguang]

Signed-off-by: liguang 
---
 src/acpi-dsdt-cpu-hotplug.dsl |    9 +++++----
 src/acpi-dsdt-isa.dsl         |    8 +++++---
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/src/acpi-dsdt-cpu-hotplug.dsl b/src/acpi-dsdt-cpu-hotplug.dsl
index 0f3e83b..869373b 100644
--- a/src/acpi-dsdt-cpu-hotplug.dsl
+++ b/src/acpi-dsdt-cpu-hotplug.dsl
@@ -6,6 +6,7 @@ Scope(_SB) {
     /* Objects filled in by run-time generated SSDT */
     External(NTFY, MethodObj)
     External(CPON, PkgObj)
+    External(PRS, BuffObj)

/* Methods called by run-time generated SSDT Processor objects */
     Method(CPMA, 1, NotSerialized) {
@@ -38,10 +39,10 @@ Scope(_SB) {
     }

/* CPU hotplug notify method */
-    OperationRegion(PRST, SystemIO, 0xaf00, 32)
-    Field(PRST, ByteAcc, NoLock, Preserve) {
-        PRS, 256
-    }
+//   OperationRegion(PRST, SystemIO, 0xaf00, 32)
+//    Field(PRST, ByteAcc, NoLock, Preserve) {
+//      PRS, 256
+//  }
     Method(PRSC, 0) {
         // Local5 = active cpu bitmap
         Store(PRS, Local5)
diff --git a/src/acpi-dsdt-isa.dsl b/src/acpi-dsdt-isa.dsl
index 2b9c3a0..1db92a1 100644
--- a/src/acpi-dsdt-isa.dsl
+++ b/src/acpi-dsdt-isa.dsl
@@ -103,6 +103,7 @@ Scope(_SB.PCI0.ISA) {
    Device (EC0) {
    	Name(_HID, EISAID ("PNP0C09"))
    	Name(_UID, 1)
+		Name(_STR, Unicode ("QEMU-EC"))

Method(_CRS, 0) {
    		Name(BFFR, ResourceTemplate() {
@@ -114,9 +115,10 @@ Scope(_SB.PCI0.ISA) {

OperationRegion(ECFD, EmbeddedControl, 0, 0xFF)
    	Field(ECFD, ByteAcc, Lock, Preserve) {
-			Offset(1),
-			CPUS,   8,      // 1, CPU plug/unplug status map
-			CPUN,   8,      // 2, CPU index
+			Offset(2),
+			CCMD,   3,      // 2, CMD for plug/unplug
+			CPUN,   8,      // 3, CPU changed id index
+			PRS,	256,	// 4. CPU status map
    	}

Name(_GPE, 3)