From nobody Tue Feb 10 04:17:10 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+102706+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+102706+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1680881425; cv=none; d=zohomail.com; s=zohoarc; b=YWMTxJRbn6s6cRCYpC2vAzuE+9QshfCPyd4wYjfCxpSmDyqaqFn3JMtt9tcPH7QS8GpjcPBcPfYsY5tErTly23xVyBgVf+aSZpIsE5+8gjPjtkQi1LUhA8C99b+3UpN8kXzwDLilvTYUak/lHlfGSF4uNU4+aFIZLeFqbH//HD8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1680881425; 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=T/8CwiJnJDZdkhavIBa9lQY20cmh3XYSMRM7HBW0qbw=; b=N73Hzlik/x5gP8UvQMH9vu7c7/gM673N4Evf0mPQEFfrSPh6VvY6xVud2PYhvOIeOOFXIgwHd8EpcT6bGuMTfJoGZddXJsoRpMxTVzNEmpFLj1qneYcsqbQavLhwz+BiZ4Ap5FDqAt9z3hKIrEinKz9AaxuT9nx5/2q27DFcOB8= 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+102706+1787277+3901457@groups.io; dmarc=fail header.from= (p=none dis=none) Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 1680881425162474.9868010154879; Fri, 7 Apr 2023 08:30:25 -0700 (PDT) Return-Path: X-Received: by 127.0.0.2 with SMTP id phQIYY1788612xQkRKA6SBUF; Fri, 07 Apr 2023 08:30:24 -0700 X-Received: from muminek.juszkiewicz.com.pl (muminek.juszkiewicz.com.pl [213.251.184.221]) by mx.groups.io with SMTP id smtpd.web11.11562.1680881422750667140 for ; Fri, 07 Apr 2023 08:30:23 -0700 X-Received: from localhost (localhost [127.0.0.1]) by muminek.juszkiewicz.com.pl (Postfix) with ESMTP id 6EACD26069C; Fri, 7 Apr 2023 17:30:15 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at juszkiewicz.com.pl X-Received: from muminek.juszkiewicz.com.pl ([127.0.0.1]) by localhost (muminek.juszkiewicz.com.pl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id nR7fCfK9dpHt; Fri, 7 Apr 2023 17:30:13 +0200 (CEST) X-Received: from applejack.lan (83.11.21.111.ipv4.supernova.orange.pl [83.11.21.111]) by muminek.juszkiewicz.com.pl (Postfix) with ESMTPSA id 27DAF260FDE; Fri, 7 Apr 2023 17:30:13 +0200 (CEST) From: "Marcin Juszkiewicz" To: devel@edk2.groups.io Cc: Ard Biesheuvel , Leif Lindholm , Rebecca Cran , Pedro Falcato , Marcin Juszkiewicz Subject: [edk2-devel] [PATCH v5 1/2] ArmLib: add functions to read system registers Date: Fri, 7 Apr 2023 17:29:56 +0200 Message-Id: <20230407152957.157494-2-marcin.juszkiewicz@linaro.org> In-Reply-To: <20230407152957.157494-1-marcin.juszkiewicz@linaro.org> References: <1753ABF1A296B040.11304@groups.io> <20230407152957.157494-1-marcin.juszkiewicz@linaro.org> 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,marcin.juszkiewicz@linaro.org X-Gm-Message-State: Np7wadXb5OxMoR9WdKZiNYMQx1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1680881424; bh=dIzn7Im5av1O8bmKMiEf/G2AoVc3WjDw1EQMnBYUV94=; h=Cc:Date:From:Reply-To:Subject:To; b=TxHpkgKn5WmaoyROQ5yX8RCEe2j9iKEZv2PVo1HNMm15zanpEgHfj4u+PbW8CpV8I7u kb7vkeAxZ8ue7kWJAdV+im5GRue45CXTFZvnf2J4d//NdPiusLg7+xJL+Z9tZB7baGC80 g85eODROaqBKV3lwUUWCdVVJGdhbcQJkMa0= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1680881425353100001 Content-Type: text/plain; charset="utf-8" ArmCpuInfo uses those to read system registers and other parts of EDK2 may find them useful. Signed-off-by: Marcin Juszkiewicz --- ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h | 48 +++++++++++++++++++ .../Library/ArmLib/AArch64/AArch64Support.S | 32 +++++++++++++ 2 files changed, 80 insertions(+) diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h b/ArmPkg/Library/Ar= mLib/AArch64/AArch64Lib.h index 330481fc50db..d9744a66cdcf 100644 --- a/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h +++ b/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h @@ -44,6 +44,54 @@ ArmReadIdAA64Pfr0 ( VOID ); =20 +UINTN +EFIAPI +ArmReadIdAA64Pfr1 ( + VOID + ); + +UINTN +EFIAPI +ArmReadIdAA64Dfr0 ( + VOID + ); + +UINTN +EFIAPI +ArmReadIdAA64Dfr1 ( + VOID + ); + +UINTN +EFIAPI +ArmReadIdAA64Isar0 ( + VOID + ); + +UINTN +EFIAPI +ArmReadIdAA64Isar1 ( + VOID + ); + +UINTN +EFIAPI +ArmReadIdAA64Isar2 ( + VOID + ); + +UINTN +EFIAPI +ArmReadIdAA64Mmfr0 ( + VOID + ); + +UINTN +EFIAPI +ArmReadIdAA64Mmfr1 ( + VOID + ); + /** Reads the ID_AA64MMFR2_EL1 register. =20 @return The contents of the ID_AA64MMFR2_EL1 register. diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S b/ArmPkg/Librar= y/ArmLib/AArch64/AArch64Support.S index d3cc1e86716b..3e8d461bc819 100644 --- a/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S +++ b/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S @@ -482,4 +482,36 @@ ASM_FUNC(ArmWriteCntHctl) msr cnthctl_el2, x0 ret =20 +ASM_FUNC(ArmReadIdAA64Pfr1) + mrs x0, ID_AA64PFR1_EL1 + ret + +ASM_FUNC(ArmReadIdAA64Dfr0) + mrs x0, ID_AA64DFR0_EL1 + ret + +ASM_FUNC(ArmReadIdAA64Dfr1) + mrs x0, ID_AA64DFR1_EL1 + ret + +ASM_FUNC(ArmReadIdAA64Isar0) + mrs x0, ID_AA64ISAR0_EL1 + ret + +ASM_FUNC(ArmReadIdAA64Isar1) + mrs x0, ID_AA64ISAR1_EL1 + ret + +ASM_FUNC(ArmReadIdAA64Isar2) + mrs x0, ID_AA64ISAR2_EL1 + ret + +ASM_FUNC(ArmReadIdAA64Mmfr0) + mrs x0, ID_AA64MMFR0_EL1 + ret + +ASM_FUNC(ArmReadIdAA64Mmfr1) + mrs x0, ID_AA64MMFR1_EL1 + ret + ASM_FUNCTION_REMOVE_IF_UNREFERENCED --=20 2.40.0 -=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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