[edk2-platforms][PATCH V2 05/11] Platform/Sgi: Low Power Idle states for RD-V1 platform


Pranav Madhu
 

RD-V1 platform supports 2 LPI states, LPI1 (Standby WFI) and LPI3
(Power-down). Add idle support for RD-V1 platform.

Signed-off-by: Pranav Madhu <pranav.madhu@arm.com>
---
Platform/ARM/SgiPkg/AcpiTables/RdV1/Dsdt.asl | 128 ++++++++++++++++++++
1 file changed, 128 insertions(+)

diff --git a/Platform/ARM/SgiPkg/AcpiTables/RdV1/Dsdt.asl b/Platform/ARM/=
SgiPkg/AcpiTables/RdV1/Dsdt.asl
index 05e8601290e2..fe33b74e3a5b 100644
--- a/Platform/ARM/SgiPkg/AcpiTables/RdV1/Dsdt.asl
+++ b/Platform/ARM/SgiPkg/AcpiTables/RdV1/Dsdt.asl
@@ -13,6 +13,86 @@
DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD", "ARMSGI",
EFI_ACPI_ARM_OEM_REVISION) {
Scope (_SB) {
+ /* _OSC: Operating System Capabilities */
+ Method (_OSC, 4, Serialized) {
+ CreateDWordField (Arg3, 0x00, STS0)
+ CreateDWordField (Arg3, 0x04, CAP0)
+
+ /* Platform-wide Capabilities */
+ If (LEqual (Arg0, ToUUID("0811b06e-4a27-44f9-8d60-3cbbc22e7b48")))=
{
+ /* OSC rev 1 supported, for other version, return failure */
+ If (LEqual (Arg1, One)) {
+ And (STS0, Not (OSC_STS_MASK), STS0)
+
+ If (And (CAP0, OSC_CAP_OS_INITIATED_LPI)) {
+ /* OS initiated LPI not supported */
+ And (CAP0, Not (OSC_CAP_OS_INITIATED_LPI), CAP0)
+ Or (STS0, OSC_STS_CAPABILITY_MASKED, STS0)
+ }
+ } Else {
+ And (STS0, Not (OSC_STS_MASK), STS0)
+ Or (STS0, Or (OSC_STS_FAILURE, OSC_STS_UNRECOGNIZED_REV), STS0=
)
+ }
+ } Else {
+ And (STS0, Not (OSC_STS_MASK), STS0)
+ Or (STS0, Or (OSC_STS_FAILURE, OSC_STS_UNRECOGNIZED_UUID), STS0)
+ }
+
+ Return (Arg3)
+ }
+
+ Name (PLPI, Package () { /* LPI for Processor, support 2 LPI states=
*/
+ 0, // Version
+ 1, // Level Index
+ 2, // Count
+ Package () { // WFI for CPU
+ 1, // Min residency (uS)
+ 1, // Wake latency (uS)
+ 1, // Flags
+ 0, // Arch Context lost Flags (no loss)
+ 100, // Residency Counter Frequency
+ 0, // No parent state
+ ResourceTemplate () { // Register Entry method
+ Register (FFixedHW,
+ 32, // Bit Width
+ 0, // Bit Offset
+ 0xFFFFFFFF, // Address
+ 3, // Access Size
+ )
+ },
+ ResourceTemplate () { // Null Residency Counter
+ Register (SystemMemory, 0, 0, 0, 0)
+ },
+ ResourceTemplate () { // Null Usage Counter
+ Register (SystemMemory, 0, 0, 0, 0)
+ },
+ "LPI1-Core"
+ },
+ Package () { // Power Gating state for CPU
+ 150, // Min residency (uS)
+ 350, // Wake latency (uS)
+ 1, // Flags
+ 1, // Arch Context lost Flags (Core context l=
ost)
+ 100, // Residency Counter Frequency
+ 1, // Parent node can be in any shallower sta=
te
+ ResourceTemplate () { // Register Entry method
+ Register (FFixedHW,
+ 32, // Bit Width
+ 0, // Bit Offset
+ 0x40000002, // Address (PwrLvl:core, StateTyp:PwrDn)
+ 3, // Access Size
+ )
+ },
+ ResourceTemplate () { // Null Residency Counter
+ Register (SystemMemory, 0, 0, 0, 0)
+ },
+ ResourceTemplate () { // Null Usage Counter
+ Register (SystemMemory, 0, 0, 0, 0)
+ },
+ "LPI3-Core"
+ },
+ })
+
Device (CL00) { // Cluster 0
Name (_HID, "ACPI0010")
Name (_UID, 0)
@@ -21,6 +101,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",=
"ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 0)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -32,6 +115,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",=
"ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 1)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -43,6 +129,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",=
"ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 2)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -54,6 +143,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",=
"ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 3)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -65,6 +157,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",=
"ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 4)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -76,6 +171,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",=
"ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 5)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -87,6 +185,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",=
"ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 6)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -98,6 +199,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",=
"ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 7)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -109,6 +213,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD"=
, "ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 8)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -120,6 +227,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD"=
, "ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 9)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -131,6 +241,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD"=
, "ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 10)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -142,6 +255,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD"=
, "ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 11)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -153,6 +269,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD"=
, "ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 12)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -164,6 +283,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD"=
, "ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 13)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -175,6 +297,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD"=
, "ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 14)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
=20
@@ -186,6 +311,9 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD"=
, "ARMSGI",
Name (_HID, "ACPI0007")
Name (_UID, 15)
Name (_STA, 0xF)
+ Method (_LPI, 0, NotSerialized) {
+ Return (\_SB.PLPI)
+ }
}
}
} // Scope(_SB)
--=20
2.17.1