From patchwork Sun Oct 8 03:36:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Protsenko X-Patchwork-Id: 731793 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5A104E95A8F for ; Sun, 8 Oct 2023 03:36:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344309AbjJHDgh (ORCPT ); Sat, 7 Oct 2023 23:36:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344300AbjJHDgg (ORCPT ); Sat, 7 Oct 2023 23:36:36 -0400 Received: from mail-ot1-x32d.google.com (mail-ot1-x32d.google.com [IPv6:2607:f8b0:4864:20::32d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22F11C5 for ; Sat, 7 Oct 2023 20:36:35 -0700 (PDT) Received: by mail-ot1-x32d.google.com with SMTP id 46e09a7af769-6c7bbfb7a73so2320219a34.3 for ; Sat, 07 Oct 2023 20:36:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1696736194; x=1697340994; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=O46Z79/thQ1J3qOk74OlVCEf6C6SSN1l//6jVCg8hMY=; b=zNmONDL/Rio2cmoS1E9S64+48isst4YaPeRvvYGG5wH4h1H5OMjyYny3I3HDVzlifD FxfhyKPcs35hfheaJDS0IJOhwlz3RXuElxYuAEWGafN7M76vog4AL3NByF8cdWM6eSM8 rxeoR59SO4GH6jcIy0slkUpEX1YVAL/iCF4DIDkWK2Np+TryncKSFO649NrMbGZ7uf2q s3rqjavv6gkhu4kX5jxuuBlB5/2lVQ6sfDI9Y78b32qteIJfz0Q17UzBMOte2gMPr5pr lVZMJhDHdjkvfQhdIbQhqSRntfbK5TPR0fRlT9AxwdZ5GWPt4kNJPtls9Jc4X4O81vPZ YTJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696736194; x=1697340994; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=O46Z79/thQ1J3qOk74OlVCEf6C6SSN1l//6jVCg8hMY=; b=U6ck/UW2kRn+YHz7JqyZPQw9Juhej1C/aP/QxuiVuR8vdP1ZUlPffH+kdYKJIKvtId RNvEDiv0BR+Nlztoz7MoGJGxA29Vlb1egQwqZT8E3OwrmTKTM29FTIiX/y6JB8yan4Bb jK0SE4QcSaEmjxhkvtNzmkh9Gsz9xxb/4ik4f8GRaHdRMPX5ewubydH17p0Y4AqGAiM0 bho/M6QZlKeX0Z8tg8LBL+dkKSiVkKOEIqn95woIodKuIsLzo7IWpRFoNBR26wSZk+fF sNFN8DczKiNh4Aq5YbOCxycg6Sg0Ni5X7jDfwddLGSrP89oytlkrlWHj1uPhOCyvf5si GrHA== X-Gm-Message-State: AOJu0YwQK5NFOdiW3FK0gpUMhmPpZ4Qohks9yeYunWkbVk7wmo/JGmIq uNczk7qgINRtk1IUAsnaq7UKI/epohI+Jb0Qe9DeBg== X-Google-Smtp-Source: AGHT+IF2WJna5aTcHCff9FDb3AFiiR1caqvPjH4/+qNmboSMrw0kS/evk2m4kO5zetYpq0utIAPz9A== X-Received: by 2002:a9d:7a42:0:b0:6b9:4216:c209 with SMTP id z2-20020a9d7a42000000b006b94216c209mr12258669otm.12.1696736194435; Sat, 07 Oct 2023 20:36:34 -0700 (PDT) Received: from localhost ([136.62.192.75]) by smtp.gmail.com with ESMTPSA id c11-20020a9d684b000000b006c460c58b00sm1104080oto.2.2023.10.07.20.36.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 Oct 2023 20:36:34 -0700 (PDT) From: Sam Protsenko To: Krzysztof Kozlowski , Rob Herring Cc: Conor Dooley , Alim Akhtar , Kees Cook , Tony Luck , "Guilherme G. Piccoli" , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH] arm64: dts: exynos: Add reserved memory for pstore on E850-96 Date: Sat, 7 Oct 2023 22:36:33 -0500 Message-Id: <20231008033633.21304-1-semen.protsenko@linaro.org> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Reserve a 2 MiB memory region to record kmsg dumps, console, ftrace and userspace messages. The implemented memory split allows capturing and reading corresponding ring buffers: * dmesg: 6 dumps, 128 KiB each * console: 128 KiB * ftrace: 128 KiB for each of 8 CPUs (1 MiB total) * userspace messages: 128 KiB Signed-off-by: Sam Protsenko --- arch/arm64/boot/dts/exynos/exynos850-e850-96.dts | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts b/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts index 8d733361ef82..d54c8fa55c09 100644 --- a/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts +++ b/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts @@ -59,6 +59,21 @@ memory@80000000 { <0x8 0x80000000 0x80000000>; }; + reserved-memory { + #address-cells = <2>; + #size-cells = <1>; + ranges; + + ramoops@f0000000 { + compatible = "ramoops"; + reg = <0x0 0xf0000000 0x200000>; + record-size = <0x20000>; + console-size = <0x20000>; + ftrace-size = <0x100000>; + pmsg-size = <0x20000>; + }; + }; + gpio-keys { compatible = "gpio-keys"; pinctrl-names = "default";