From nobody Tue Feb 10 04:16:55 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) client-ip=66.175.222.108; envelope-from=bounce+27952+74548+1787277+3901457@groups.io; helo=mail02.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+74548+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=arm.com ARC-Seal: i=1; a=rsa-sha256; t=1619613388; cv=none; d=zohomail.com; s=zohoarc; b=IfaQuUBrqvFYrCJngYLP8bMS2Ls9nK4lDCPo46RC/LSxuQkPZD0zTCSXcnEJVeGaxrsWPeXxPrnOUdlDu697jpTY+DkAFfeJX6ZicTZRQwVWs0vvxHa5nl8iLyl1PUzvlnOI/6LxKaYeH4Udhz8ikw7bfluysDwBsTEvh3aGrds= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1619613388; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To; bh=VcE6h1ysVmrTBtDFKBZtiREsd7FtDypMjNSM4eV9in4=; b=edvbfgw6wvsYYdmkquGAG8S4GIHONHvHC58BFpIBHX+CW+zCBc3gmGOus+dQlpMPqIW0Shpf7Q8hwyL4QM6E0k+D7RNHhE53fRJWdvW7saNbCXCP4J+KTfr91BUcKkVlctUKD2jzJrqdB1hIcDPjuteKBBlwxoXu3Ty/ObKMSX0= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+74548+1787277+3901457@groups.io; dmarc=fail header.from= (p=none dis=none) header.from= Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 1619613388276374.01674534018036; Wed, 28 Apr 2021 05:36:28 -0700 (PDT) Return-Path: X-Received: by 127.0.0.2 with SMTP id 4D1UYY1788612xjnUUQQqG0t; Wed, 28 Apr 2021 05:36:27 -0700 X-Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mx.groups.io with SMTP id smtpd.web10.11288.1619613387228378608 for ; Wed, 28 Apr 2021 05:36:27 -0700 X-Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id CF8D61FB; Wed, 28 Apr 2021 05:36:26 -0700 (PDT) X-Received: from usa.arm.com (a074742.blr.arm.com [10.162.16.32]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id A325E3F694; Wed, 28 Apr 2021 05:36:25 -0700 (PDT) From: "Pranav Madhu" To: devel@edk2.groups.io Cc: Ard Biesheuvel , Sami Mujawar Subject: [edk2-devel] [edk2-platforms][PATCH V1 07/17] Platform/Sgi: Low Power Idle States for RD-N1-Edge dual-chip Date: Wed, 28 Apr 2021 18:05:50 +0530 Message-Id: <20210428123600.2385-8-pranav.madhu@arm.com> In-Reply-To: <20210428123600.2385-1-pranav.madhu@arm.com> References: <20210428123600.2385-1-pranav.madhu@arm.com> MIME-Version: 1.0 Precedence: Bulk List-Unsubscribe: List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,pranav.madhu@arm.com X-Gm-Message-State: C2sTOLVB5QX3O75oy9rUEKOax1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1619613387; bh=FEUXPBat8B+r/XMGzUucW7EUkU50ngDgJ9fd7bzGVKU=; h=Cc:Date:From:Reply-To:Subject:To; b=R3WaGRes5PO38BEuaZ1f4SNogb+DO5g4iyQADXh6yzL1DWZAIdqpCB3ClOsnNwhUdjY dwefeNT36l4p4pdz0jp2zg/JmJbdS4W3xw9qggt6frgJCNYDKGu7FHcF7/dgwJj3vwVj4 nSvu5XRZnKmEfSjunHKr76HLHONw8M3r2mY= X-ZohoMail-DKIM: pass (identity @groups.io) Content-Type: text/plain; charset="utf-8" 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 --- 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 los= t) + 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) + } =20 Device (CP00) { // Neoverse-N1: Cluster 0, Cpu 0 Name (_HID, "ACPI0007") Name (_UID, 0) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } =20 Device (CP01) { // Neoverse-N1: Cluster 0, Cpu 1 Name (_HID, "ACPI0007") Name (_UID, 1) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } =20 Device (CP02) { // Neoverse-N1: Cluster 0, Cpu 2 Name (_HID, "ACPI0007") Name (_UID, 2) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } =20 Device (CP03) { // Neoverse-N1: Cluster 0, Cpu 3 Name (_HID, "ACPI0007") Name (_UID, 3) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } } =20 Device (CLU1) { // Cluster 1 Name (_HID, "ACPI0010") Name (_UID, 1) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.CLPI) + } =20 Device (CP04) { // Neoverse-N1: Cluster 1, Cpu 0 Name (_HID, "ACPI0007") Name (_UID, 4) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } =20 Device (CP05) { // Neoverse-N1: Cluster 1, Cpu 1 Name (_HID, "ACPI0007") Name (_UID, 5) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } =20 Device (CP06) { // Neoverse-N1: Cluster 1, Cpu 2 Name (_HID, "ACPI0007") Name (_UID, 6) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } =20 Device (CP07) { // Neoverse-N1: Cluster 1, Cpu 3 Name (_HID, "ACPI0007") Name (_UID, 7) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } } =20 @@ -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) + } =20 Device (CP08) { // Neoverse-N1: Cluster 2, Cpu 0 Name (_HID, "ACPI0007") Name (_UID, 8) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } =20 Device (CP09) { // Neoverse-N1: Cluster 2, Cpu 1 Name (_HID, "ACPI0007") Name (_UID, 9) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } =20 Device (CP10) { // Neoverse-N1: Cluster 2, Cpu 2 Name (_HID, "ACPI0007") Name (_UID, 10) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } =20 Device (CP11) { // Neoverse-N1: Cluster 2, Cpu 3 Name (_HID, "ACPI0007") Name (_UID, 11) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } } =20 Device (CLU3) { // Cluster 3 Name (_HID, "ACPI0010") Name (_UID, 3) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.CLPI) + } =20 Device (CP12) { // Neoverse-N1: Cluster 3, Cpu 0 Name (_HID, "ACPI0007") Name (_UID, 12) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } =20 Device (CP13) { // Neoverse-N1: Cluster 3, Cpu 1 Name (_HID, "ACPI0007") Name (_UID, 13) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } =20 Device (CP14) { // Neoverse-N1: Cluster 3, Cpu 2 Name (_HID, "ACPI0007") Name (_UID, 14) Name (_STA, 0xF) + Method (_LPI, 0, NotSerialized) { + Return (\_SB.PLPI) + } } =20 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) --=20 2.17.1 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. 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