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-rw-r--r--qemu/hw/i386/acpi-dsdt-hpet.dsl48
1 files changed, 48 insertions, 0 deletions
diff --git a/qemu/hw/i386/acpi-dsdt-hpet.dsl b/qemu/hw/i386/acpi-dsdt-hpet.dsl
new file mode 100644
index 000000000..44961b87a
--- /dev/null
+++ b/qemu/hw/i386/acpi-dsdt-hpet.dsl
@@ -0,0 +1,48 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/****************************************************************
+ * HPET
+ ****************************************************************/
+
+Scope(\_SB) {
+ Device(HPET) {
+ Name(_HID, EISAID("PNP0103"))
+ Name(_UID, 0)
+ OperationRegion(HPTM, SystemMemory, 0xFED00000, 0x400)
+ Field(HPTM, DWordAcc, Lock, Preserve) {
+ VEND, 32,
+ PRD, 32,
+ }
+ Method(_STA, 0, NotSerialized) {
+ Store(VEND, Local0)
+ Store(PRD, Local1)
+ ShiftRight(Local0, 16, Local0)
+ If (LOr(LEqual(Local0, 0), LEqual(Local0, 0xffff))) {
+ Return (0x0)
+ }
+ If (LOr(LEqual(Local1, 0), LGreater(Local1, 100000000))) {
+ Return (0x0)
+ }
+ Return (0x0F)
+ }
+ Name(_CRS, ResourceTemplate() {
+ Memory32Fixed(ReadOnly,
+ 0xFED00000, // Address Base
+ 0x00000400, // Address Length
+ )
+ })
+ }
+}