[SeaBIOS] [PATCH] if HPET is not present do not report it in DSDT
Gleb Natapov
gleb at redhat.com
Sun Mar 11 09:08:38 CET 2012
Replicate the check that detects if HPET table should be created
in AML too.
Signed-off-by: Gleb Natapov <gleb at redhat.com>
diff --git a/src/acpi-dsdt.dsl b/src/acpi-dsdt.dsl
index 7082b65..4e04c48 100644
--- a/src/acpi-dsdt.dsl
+++ b/src/acpi-dsdt.dsl
@@ -188,8 +188,22 @@ DefinitionBlock (
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) {
- Return(0x0F)
+ 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() {
DWordMemory(
--
Gleb.
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