RD-N1-Edge platform in multi chip configuration supports 2 LPI states, LPI1 (Standby WFI) and LPI3 (Power-down). The cluster supports LPI2 (Power-down) state. The LPI implementation also supports combined power state for core and cluster.
Signed-off-by: Pranav Madhu <pranav.ma...@arm.com> --- Platform/ARM/SgiPkg/AcpiTables/RdN1EdgeX2/Dsdt.asl | 162 ++++++++++++++++++++ 1 file changed, 162 insertions(+) diff --git a/Platform/ARM/SgiPkg/AcpiTables/RdN1EdgeX2/Dsdt.asl b/Platform/ARM/SgiPkg/AcpiTables/RdN1EdgeX2/Dsdt.asl index 2379f20a79ef..5807658e7815 100644 --- a/Platform/ARM/SgiPkg/AcpiTables/RdN1EdgeX2/Dsdt.asl +++ b/Platform/ARM/SgiPkg/AcpiTables/RdN1EdgeX2/Dsdt.asl @@ -15,62 +15,194 @@ 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 (CLPI, Package () { /* LPI for Cluster, support 1 LPI state */ + 0, // Version + 0, // Level Index + 1, // Count + Package () { // Power Gating state for Cluster + 2500, // Min residency (uS) + 1150, // Wake latency (uS) + 1, // Flags + 1, // Arch Context Flags + 100, // Residency Counter Frequency + 0, // No Parent State + 0x00000020, // Integer Entry method + ResourceTemplate () { // Null Residency Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + ResourceTemplate () { // Null Usage Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + "LPI2-Cluster" + }, + }) + + 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 lost) + 100, // Residency Counter Frequency + 1, // Parent node can be in any shallower state + 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" + }, + }) + /* Chip 0 CPUs */ Device (CLU0) { // Cluster 0 Name (_HID, "ACPI0010") Name (_UID, 0) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.CLPI) + } Device (CP00) { // Neoverse-N1: Cluster 0, Cpu 0 Name (_HID, "ACPI0007") Name (_UID, 0) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } Device (CP01) { // Neoverse-N1: Cluster 0, Cpu 1 Name (_HID, "ACPI0007") Name (_UID, 1) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } Device (CP02) { // Neoverse-N1: Cluster 0, Cpu 2 Name (_HID, "ACPI0007") Name (_UID, 2) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } Device (CP03) { // Neoverse-N1: Cluster 0, Cpu 3 Name (_HID, "ACPI0007") Name (_UID, 3) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } } Device (CLU1) { // Cluster 1 Name (_HID, "ACPI0010") Name (_UID, 1) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.CLPI) + } Device (CP04) { // Neoverse-N1: Cluster 1, Cpu 0 Name (_HID, "ACPI0007") Name (_UID, 4) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } Device (CP05) { // Neoverse-N1: Cluster 1, Cpu 1 Name (_HID, "ACPI0007") Name (_UID, 5) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } Device (CP06) { // Neoverse-N1: Cluster 1, Cpu 2 Name (_HID, "ACPI0007") Name (_UID, 6) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } Device (CP07) { // Neoverse-N1: Cluster 1, Cpu 3 Name (_HID, "ACPI0007") Name (_UID, 7) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } } @@ -78,58 +210,88 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD", "ARMSGI", Device (CLU2) { // Cluster 2 Name (_HID, "ACPI0010") Name (_UID, 2) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.CLPI) + } Device (CP08) { // Neoverse-N1: Cluster 2, Cpu 0 Name (_HID, "ACPI0007") Name (_UID, 8) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } Device (CP09) { // Neoverse-N1: Cluster 2, Cpu 1 Name (_HID, "ACPI0007") Name (_UID, 9) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } Device (CP10) { // Neoverse-N1: Cluster 2, Cpu 2 Name (_HID, "ACPI0007") Name (_UID, 10) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } Device (CP11) { // Neoverse-N1: Cluster 2, Cpu 3 Name (_HID, "ACPI0007") Name (_UID, 11) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } } Device (CLU3) { // Cluster 3 Name (_HID, "ACPI0010") Name (_UID, 3) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.CLPI) + } Device (CP12) { // Neoverse-N1: Cluster 3, Cpu 0 Name (_HID, "ACPI0007") Name (_UID, 12) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } Device (CP13) { // Neoverse-N1: Cluster 3, Cpu 1 Name (_HID, "ACPI0007") Name (_UID, 13) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } Device (CP14) { // Neoverse-N1: Cluster 3, Cpu 2 Name (_HID, "ACPI0007") Name (_UID, 14) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } Device (CP15) { // Neoverse-N1: Cluster 3, Cpu 3 Name (_HID, "ACPI0007") Name (_UID, 15) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } } } // Scope(_SB) -- 2.17.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. 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