From patchwork Tue Apr 19 15:11:56 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep Holla X-Patchwork-Id: 66107 Delivered-To: patch@linaro.org Received: by 10.140.93.198 with SMTP id d64csp1908554qge; Tue, 19 Apr 2016 08:12:08 -0700 (PDT) X-Received: by 10.66.190.131 with SMTP id gq3mr4787329pac.42.1461078728433; Tue, 19 Apr 2016 08:12:08 -0700 (PDT) Return-Path: Received: from ml01.01.org (ml01.01.org. [198.145.21.10]) by mx.google.com with ESMTPS id h14si14529499pfh.211.2016.04.19.08.12.08 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 19 Apr 2016 08:12:08 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of edk2-devel-bounces@lists.01.org designates 198.145.21.10 as permitted sender) client-ip=198.145.21.10; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of edk2-devel-bounces@lists.01.org designates 198.145.21.10 as permitted sender) smtp.mailfrom=edk2-devel-bounces@lists.01.org Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 05DB31A2011; Tue, 19 Apr 2016 08:12:08 -0700 (PDT) X-Original-To: edk2-devel@lists.01.org Delivered-To: edk2-devel@lists.01.org Received: from foss.arm.com (foss.arm.com [217.140.101.70]) by ml01.01.org (Postfix) with ESMTP id 089321A21D0 for ; Tue, 19 Apr 2016 08:12:06 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 9858063; Tue, 19 Apr 2016 08:10:49 -0700 (PDT) Received: from e103737-lin.cambridge.arm.com (e103737-lin.cambridge.arm.com [10.1.207.150]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 088073F222; Tue, 19 Apr 2016 08:12:04 -0700 (PDT) From: Sudeep Holla To: edk2-devel@lists.01.org, linaro-uefi@lists.linaro.org Date: Tue, 19 Apr 2016 16:11:56 +0100 Message-Id: <1461078716-21369-3-git-send-email-sudeep.holla@arm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1461078716-21369-1-git-send-email-sudeep.holla@arm.com> References: <1461078716-21369-1-git-send-email-sudeep.holla@arm.com> Subject: [edk2] [PATCH 3/3] Platforms/ARM/Juno: Add support for ACPI 6.0 LPI(Low Power Idle) states X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Ard Biesheuvel , Leif Lindholm , Sudeep Holla MIME-Version: 1.0 Errors-To: edk2-devel-bounces@lists.01.org Sender: "edk2-devel" ACPI 6.0 introduced LPI(Low Power Idle) states that provides an alternate method to describe processor idle states. LPI extensions leverages the processor container device(again introduced in ACPI 6.0) allowing to express which parts of the system are affected by a given LPI state. It defines the local power states for each node in a hierarchical processor topology. The OSPM can use _LPI object to select a local power state for each level of processor hierarchy in the system. This patch adds LPI support on Juno. Contributed-under: TianoCore Contribution Agreement 1.0 Cc: Ard Biesheuvel Cc: Leif Lindholm Signed-off-by: Sudeep Holla --- Platforms/ARM/Juno/AcpiTables/Dsdt.asl | 232 ++++++++++++++++++++++++++++++--- 1 file changed, 213 insertions(+), 19 deletions(-) -- 1.9.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel diff --git a/Platforms/ARM/Juno/AcpiTables/Dsdt.asl b/Platforms/ARM/Juno/AcpiTables/Dsdt.asl index c80f46a4ce64..3247e6b12aa5 100644 --- a/Platforms/ARM/Juno/AcpiTables/Dsdt.asl +++ b/Platforms/ARM/Juno/AcpiTables/Dsdt.asl @@ -19,29 +19,223 @@ DefinitionBlock("DsdtTable.aml", "DSDT", 1, "ARMLTD", "ARM-JUNO", EFI_ACPI_ARM_O // // A57x2-A53x4 Processor declaration // - Device(CPU0) { // A53-0: Cluster 1, Cpu 0 - Name(_HID, "ACPI0007") - Name(_UID, 0) + Method (_OSC, 4, Serialized) { // _OSC: Operating System Capabilities + CreateDWordField (Arg3, 0x00, STS0) + CreateDWordField (Arg3, 0x04, CAP0) + If ((Arg0 == ToUUID ("0811b06e-4a27-44f9-8d60-3cbbc22e7b48") /* Platform-wide Capabilities */)) { + If (!(Arg1 == One)) { + STS0 &= ~0x1F + STS0 |= 0x0A + } Else { + If ((CAP0 & 0x100)) { + CAP0 &= ~0x100 /* No support for OS Initiated LPI */ + STS0 &= ~0x1F + STS0 |= 0x12 + } + } + } Else { + STS0 &= ~0x1F + STS0 |= 0x06 + } + Return (Arg3) } - Device(CPU1) { // A53-1: Cluster 1, Cpu 1 - Name(_HID, "ACPI0007") + Device (CLU0) { // Cluster0 state + Name(_HID, "ACPI0010") Name(_UID, 1) + Name (_LPI, Package() { + 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 + 0x01000000, // Integer Entry method + ResourceTemplate() { // Null Residency Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + ResourceTemplate() { // Null Usage Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + "CluPwrDn" + }, + }) + Name(PLPI, Package() { + 0, // Version + 1, // Level Index + 2, // Count + Package() { // WFI for CPU + 1, // Min residency (uS) + 1, // Wake latency (uS) + 1, // Flags + 0, // Arch Context Flags + 100, //Residency Counter Frequency + 0, // No parent state + ResourceTemplate () { + // Register Entry method + Register (FFixedHW, + 0x20, // Bit Width + 0x00, // Bit Offset + 0xFFFFFFFF, // Address + 0x03, // Access Size + ) + }, + ResourceTemplate() { // Null Residency Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + ResourceTemplate() { // Null Usage Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + "WFI", + }, + Package() { // Power Gating state for CPU + 150, // Min residency (uS) + 350, // Wake latency (uS) + 1, // Flags + 1, // Arch Context Flags + 100, //Residency Counter Frequency + 1, // Parent node can be in any state + ResourceTemplate () { + // Register Entry method + Register (FFixedHW, + 0x20, // Bit Width + 0x00, // Bit Offset + 0x00010000, // Address + 0x03, // Access Size + ) + }, + ResourceTemplate() { // Null Residency Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + ResourceTemplate() { // Null Usage Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + "CorePwrDn" + }, + }) + Device(CPU0) { // A57-0: Cluster 0, Cpu 0 + Name(_HID, "ACPI0007") + Name(_UID, 4) + Method (_LPI, 0, NotSerialized) { + return(PLPI) + } + } + Device(CPU1) { // A57-1: Cluster 0, Cpu 1 + Name(_HID, "ACPI0007") + Name(_UID, 5) + Method (_LPI, 0, NotSerialized) { + return(PLPI) + } + } } - Device(CPU2) { // A53-2: Cluster 1, Cpu 2 - Name(_HID, "ACPI0007") + Device (CLU1) { // Cluster1 state + Name(_HID, "ACPI0010") Name(_UID, 2) - } - Device(CPU3) { // A53-3: Cluster 1, Cpu 3 - Name(_HID, "ACPI0007") - Name(_UID, 3) - } - Device(CPU4) { // A57-0: Cluster 0, Cpu 0 - Name(_HID, "ACPI0007") - Name(_UID, 4) - } - Device(CPU5) { // A57-1: Cluster 0, Cpu 1 - Name(_HID, "ACPI0007") - Name(_UID, 5) + Name (_LPI, Package() { + 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 + 0x01000000, // Integer Entry method + ResourceTemplate() { // Null Residency Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + ResourceTemplate() { // Null Usage Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + "CluPwrDn" + }, + }) + Name(PLPI, Package() { + 0, // Version + 1, // Level Index + 2, // Count + Package() { // WFI for CPU + 1, // Min residency (uS) + 1, // Wake latency (uS) + 1, // Flags + 0, // Arch Context Flags + 100, //Residency Counter Frequency + 0, // No parent state + ResourceTemplate () { + // Register Entry method + Register (FFixedHW, + 0x20, // Bit Width + 0x00, // Bit Offset + 0xFFFFFFFF, // Address + 0x03, // Access Size + ) + }, + ResourceTemplate() { // Null Residency Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + ResourceTemplate() { // Null Usage Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + "WFI", + }, + Package() { // Power Gating state for CPU + 150, // Min residency (uS) + 350, // Wake latency (uS) + 1, // Flags + 1, // Arch Context Flags + 100, //Residency Counter Frequency + 1, // Parent node can be in any state + ResourceTemplate () { + // Register Entry method + Register (FFixedHW, + 0x20, // Bit Width + 0x00, // Bit Offset + 0x00010000, // Address + 0x03, // Access Size + ) + }, + ResourceTemplate() { // Null Residency Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + ResourceTemplate() { // Null Usage Counter + Register (SystemMemory, 0, 0, 0, 0) + }, + "CorePwrDn" + }, + }) + Device(CPU2) { // A53-0: Cluster 1, Cpu 0 + Name(_HID, "ACPI0007") + Name(_UID, 0) + Method (_LPI, 0, NotSerialized) { + return(PLPI) + } + } + Device(CPU3) { // A53-1: Cluster 1, Cpu 1 + Name(_HID, "ACPI0007") + Name(_UID, 1) + Method (_LPI, 0, NotSerialized) { + return(PLPI) + } + } + Device(CPU4) { // A53-2: Cluster 1, Cpu 2 + Name(_HID, "ACPI0007") + Name(_UID, 2) + Method (_LPI, 0, NotSerialized) { + return(PLPI) + } + } + Device(CPU5) { // A53-3: Cluster 1, Cpu 3 + Name(_HID, "ACPI0007") + Name(_UID, 3) + Method (_LPI, 0, NotSerialized) { + return(PLPI) + } + } } //