From nobody Thu May 16 10:21:52 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1677250143; cv=none; d=zohomail.com; s=zohoarc; b=m7QRTa/jsIFhprMkzEbewHDJhkpftmAwbRJaClI2AY62qVcUqadh9srRjU/tDZibRJkq8SL2a9qLj7wx86gOtkDiMf1byJ2BepHj8mnRxd68yHLcLcBj9+JRL5CmKL8chjn0N7LSCC5k/UNDQZD4lOel0dW6TPuqy+hSKlA123k= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1677250143; h=Content-Transfer-Encoding:Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:To; bh=gqs1O6BrGgUjBQwv5/Wo5K7s6aN+rCmfuqoj9RJz1Dk=; b=jYaw92BLxE/QYjpTZWrqqdCZkim0RXwamAtQSoF8IemJbS6/zjZ9PbCKHRfYr0jbJq5pGzoakO+p9WFgCQQLLlQwcqfEiMc48wfYPTuPG1uc86NbOooQHgKb9/YucejF+6ylcXE/KdShN1EmLHITfPDxumkvdGsj+VFGDjXW8Ko= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1677250143410691.4078994899041; Fri, 24 Feb 2023 06:49:03 -0800 (PST) Received: from list by lists.xenproject.org with outflank-mailman.501081.772655 (Exim 4.92) (envelope-from ) id 1pVZN4-00070r-JP; Fri, 24 Feb 2023 14:48:26 +0000 Received: by outflank-mailman (output) from mailman id 501081.772655; Fri, 24 Feb 2023 14:48:26 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pVZN4-00070k-GX; Fri, 24 Feb 2023 14:48:26 +0000 Received: by outflank-mailman (input) for mailman id 501081; Fri, 24 Feb 2023 14:48:24 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pVZN2-00070e-AA for xen-devel@lists.xenproject.org; Fri, 24 Feb 2023 14:48:24 +0000 Received: from mail-lj1-x236.google.com (mail-lj1-x236.google.com [2a00:1450:4864:20::236]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 4849c744-b452-11ed-a82a-c9ca1d2f71af; Fri, 24 Feb 2023 15:48:21 +0100 (CET) Received: by mail-lj1-x236.google.com with SMTP id j17so14566922ljq.11 for ; Fri, 24 Feb 2023 06:48:21 -0800 (PST) Received: from 34-6F-24-FC-D2-65.. (46.204.108.92.nat.umts.dynamic.t-mobile.pl. [46.204.108.92]) by smtp.gmail.com with ESMTPSA id z9-20020a2e3509000000b0029352fc39fbsm1481923ljz.63.2023.02.24.06.48.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Feb 2023 06:48:20 -0800 (PST) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 4849c744-b452-11ed-a82a-c9ca1d2f71af DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=gqs1O6BrGgUjBQwv5/Wo5K7s6aN+rCmfuqoj9RJz1Dk=; b=VY3iQtCSyiHWtlJtvrkE+Ni53vTwmU+SlXRpkj53JYYSUiERSOMph4wjCg37+Jva9R DNGG9yKB/jzbgoNnpImhgJYP+BWBGEyc3JzH4fw6XtQb6KZTkvk+qO2KBcOWcUTt6TMb cvv/oNOkDhS5LampNYg11+qytj1xbIBO9SM+AwcTj0Gxpnm4nqjcx056JSIZRDeMfGUA nOT9DgP39zP7DwFLxayembvtdrDMp6+lZuWnrp84r/T41B+hSuqRBk6lmUHiCor6lnaT TtOe1APZUkVM6dpmuGyx6TQpN1z88LT1bd3Ggf4rDzdG3V7tgvOuTSkDpy2OIn8nRJIX hs4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=gqs1O6BrGgUjBQwv5/Wo5K7s6aN+rCmfuqoj9RJz1Dk=; b=hkBuMXTyOGUzGTwaoTaSAkU3McORwigQrj4TzlyAxZpSmZnit0rsqsn2qT6CQGFDdv ygWeR+pQpU88XO1bV9y+BSqO+KMI8Cmnk6ANCqqAR77qFRHcwo4BVpSz2UmJkqHgUrHV LwiUnSyf0I2WpBB0gfV39ujPDW1+9ckYq/N3AojPdNEVQ3FG0P7nY7rUsSrx3nqdodZk N9KeYbLl/LejhIecssioDCXfGZinvtoqz1+/l/IEW9dZw7Fwk2jgyUL2zInPU6g9kixk OeTh1Hn1htrsov+Y3xcSLuy2p45hyIX96PAig3W7SN17tHmhWfFyacrfuRjs7CFH9n5/ 4Liw== X-Gm-Message-State: AO0yUKUxzqZwnvauFK63IZUM4XXPBThRwdSc6wE10Gj2z0v2YjH0NyOG VDxrdN/2rs7svdavmgFROKiemkrPa54= X-Google-Smtp-Source: AK7set9qi5LCaooJ9u5U5ZW7+Lui02JjCe57lsfjGowWKdLjWJrzgztFZWxXXxJ55Qd5hnArzVDnDA== X-Received: by 2002:a2e:9e44:0:b0:295:8c47:dca6 with SMTP id g4-20020a2e9e44000000b002958c47dca6mr4385392ljk.17.1677250100386; Fri, 24 Feb 2023 06:48:20 -0800 (PST) From: Oleksii Kurochko To: xen-devel@lists.xenproject.org Cc: Andrew Cooper , Stefano Stabellini , Gianluca Guida , Oleksii Kurochko , Bob Eshleman , Alistair Francis , Connor Davis Subject: [PATCH] xen/riscv: read hart_id and dtb_base passed by bootloader Date: Fri, 24 Feb 2023 16:48:14 +0200 Message-Id: <94d722dea114defa2a5efe29e6511829f0c54b41.1677249592.git.oleksii.kurochko@gmail.com> X-Mailer: git-send-email 2.39.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1677250145374100001 Content-Type: text/plain; charset="utf-8" Signed-off-by: Oleksii Kurochko --- xen/arch/riscv/setup.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/xen/arch/riscv/setup.c b/xen/arch/riscv/setup.c index b3f8b10f71..154bf3a0bc 100644 --- a/xen/arch/riscv/setup.c +++ b/xen/arch/riscv/setup.c @@ -26,6 +26,18 @@ static void test_macros_from_bug_h(void) =20 void __init noreturn start_xen(void) { + /* + * The following things are passed by bootloader: + * a0 -> hart_id + * a1 -> dtb_base + */ + register unsigned long hart_id asm("a0"); + register unsigned long dtb_base asm("a1"); + + asm volatile( "mv %0, a0" : "=3Dr" (hart_id) ); + + asm volatile( "mv %0, a1" : "=3Dr" (dtb_base) ); + early_printk("Hello from C env\n"); =20 trap_init(); --=20 2.39.0