From nobody Thu Dec 26 13:26:49 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=none (zoho.com: 198.145.21.10 is neither permitted nor denied by domain of lists.01.org) smtp.mailfrom=edk2-devel-bounces@lists.01.org Return-Path: Received: from ml01.01.org (ml01.01.org [198.145.21.10]) by mx.zohomail.com with SMTPS id 1513967695493241.2941402868604; Fri, 22 Dec 2017 10:34:55 -0800 (PST) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id DA55B22198F7F; Fri, 22 Dec 2017 10:29:45 -0800 (PST) Received: from cam-smtp0.cambridge.arm.com (fw-tnat.cambridge.arm.com [217.140.96.140]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 969C022225C1E for ; Fri, 22 Dec 2017 10:29:37 -0800 (PST) Received: from E111747.Emea.Arm.com (e111747.emea.arm.com [10.1.25.75]) by cam-smtp0.cambridge.arm.com (8.13.8/8.13.8) with ESMTP id vBMIYOYg007680; Fri, 22 Dec 2017 18:34:25 GMT X-Original-To: edk2-devel@lists.01.org Received-SPF: none (zoho.com: 198.145.21.10 is neither permitted nor denied by domain of lists.01.org) client-ip=198.145.21.10; envelope-from=edk2-devel-bounces@lists.01.org; helo=ml01.01.org; Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=217.140.96.140; helo=cam-smtp0.cambridge.arm.com; envelope-from=evan.lloyd@arm.com; receiver=edk2-devel@lists.01.org From: evan.lloyd@arm.com To: edk2-devel@lists.01.org Date: Fri, 22 Dec 2017 18:34:16 +0000 Message-Id: <20171222183418.8616-12-evan.lloyd@arm.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20171222183418.8616-1-evan.lloyd@arm.com> References: <20171222183418.8616-1-evan.lloyd@arm.com> Subject: [edk2] [PATCH v2 11/13] ArmPlatformPkg: Reserving framebuffer at build X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "ard.biesheuvel@linaro.org"@arm.com, "leif.lindholm@linaro.org"@arm.com, "nd@arm.com"@arm.com, "Matteo.Carlini@arm.com"@arm.com MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Errors-To: edk2-devel-bounces@lists.01.org Sender: "edk2-devel" X-ZohoMail: RSF_4 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" From: Girish Pathak Currently framebuffer memory is either reserved in special VRAM or dynamically allocated using boot services memory allocation functions. When allocated using boot services calls the memory has to be allocated as EfiBootServicesData. Unfortunately failures have been seen with this case. There is also an unfortunate lack of control on the placement of the framebuffer. This change introduces two PCDs, PcdArmLcdFrameBufferBase and PcdArmLcdFrameBufferSize which enable build time reservation of the framebuffer, avoiding the need to allocate dynamically. This allows the framebuffer to appear as "I/O memory" outside of the normal RAM map, which is similar to the "VRAM" case. This change has no impact on current code, only enables the option of build time reservation of framebuffers. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Girish Pathak Signed-off-by: Evan Lloyd --- ArmPlatformPkg/ArmPlatformPkg.dec | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/ArmPlatformPkg/ArmPlatformPkg.dec b/ArmPlatformPkg/ArmPlatform= Pkg.dec index 9a61e4a511024c80e787500de5038779363f0d95..a887ffcfd9f3b168bfb19ff0a84= e310c7891b527 100644 --- a/ArmPlatformPkg/ArmPlatformPkg.dec +++ b/ArmPlatformPkg/ArmPlatformPkg.dec @@ -93,6 +93,10 @@ [PcdsFixedAtBuild.common] gArmPlatformTokenSpaceGuid.PcdPL111LcdBase|0x0|UINT32|0x00000026 gArmPlatformTokenSpaceGuid.PcdArmHdLcdBase|0x0|UINT32|0x00000027 =20 + ## If set, frame buffer memory will be reserved and mapped in the system= RAM + gArmPlatformTokenSpaceGuid.PcdArmLcdDdrFrameBufferSize|0x0|UINT32|0x0000= 0043 + gArmPlatformTokenSpaceGuid.PcdArmLcdDdrFrameBufferBase|0x0|UINT64|0x0000= 0044 + ## PL180 MCI gArmPlatformTokenSpaceGuid.PcdPL180SysMciRegAddress|0x00000000|UINT32|0x= 00000028 gArmPlatformTokenSpaceGuid.PcdPL180MciBaseAddress|0x00000000|UINT32|0x00= 000029 --=20 Guid("CE165669-3EF3-493F-B85D-6190EE5B9759") _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel