From patchwork Thu Jan 19 05:26:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jesse T X-Patchwork-Id: 13107431 X-Patchwork-Delegate: palmer@dabbelt.com 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 099AAC00A5A for ; Thu, 19 Jan 2023 05:26:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0D7bi2rTLbneoXThAVXXihWuvb/79KU7yhsK5Vu9lTo=; b=ENE0YFSK+9+oTa Jz3ggFic7kZ5ASB63HBmESIV+esc7FNObWJSLGcx8HD5UaD49SCFMkZ3iJhyRh2KW0nBadhZhmAeI dTy5dtWLBRPw+BOhOh9iRjPBWMn1Ijon/8cpNXWMphIl1wMbfXXtsZGYYJhpqVCRj8RLOJAGqZMP7 Q922fLzvVFCiXztPYyyirSqGGw5kih57HGZaxWm5DNcA1QAEIRDXMqAzwXRYYeilVjYPW7qmVSU0S cQ6Eob0H9cps73RNzi6suUjkGqkkaEgWBdI1u5+80q5Ml+JWWjUjsl74YPrf1LDtq2/dejNg00ZbJ qkPZ3UdyMq4hedGDRijA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pINRs-003fXC-1O; Thu, 19 Jan 2023 05:26:52 +0000 Received: from mail-qt1-x836.google.com ([2607:f8b0:4864:20::836]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pINRo-003fVS-UA for linux-riscv@lists.infradead.org; Thu, 19 Jan 2023 05:26:50 +0000 Received: by mail-qt1-x836.google.com with SMTP id j9so807689qtv.4 for ; Wed, 18 Jan 2023 21:26:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=tC4jG2P7TxWk2xJp/iiDtds8NtE5bfDPvvXdGd6AAck=; b=NAGaDdwxyXQU9vq7ltkCPRl1iGhpgYu/A2RgiYg6jwn1rEsUpWIb+1C7cEqotNB2dH 3kC8jzOXysoav7zP3YE+69BlP0NgLv69Ow30Q+l7FRS9H0JFopH80KG7yEsMmkLITON7 Y+av8jnv+G3M/d4rtXltAvKRf3LFLxiuTupvkvziaZOtddRCie0OdfyAdB0NEVdqNvkc B4svO4SegF0tP6xvxalxDC36jb8wGnEZMWfdoh7p1vGi0Fz5ArhGhu3OlkMBx3DfVbPA SxClmoaOnUNIkPS225ElDLrxWGLxfvvO89R39rK3hUtMTLno7NgOTRuAK5UH726aT6zv R6nA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=tC4jG2P7TxWk2xJp/iiDtds8NtE5bfDPvvXdGd6AAck=; b=znMu5vXhhohctOANubga/evh7yO5u1Cv7kzh+tOqnATfm3EWypSv0TEryPYF/rHEhz 43jWM2wEIfYLkKdDLmE5auJR0eZMLK/1LzeqL4oiC40NKEEOYz3zUTBNSh7MTPSmtIH3 V6L8iWWY1Bhh5CJTB6nu8Bjz4QvosS4d4Hb/irqdObgPVGemu9AGWVc4+gUKEyRFqhqd +bqorhU6VbcW5NXQ2XN/o44FBcs5RYnbpg+VKIn3WDtewRwW67AM/hUfcqgWuLAAvJbf j60a13chnKDERZkmgGOlkA7Mq//TGKr8HrlftK/KA1NC0dUO2iRZAsVp/LM0QdT5E6M3 zrRw== X-Gm-Message-State: AFqh2kobhnJrqcjY5E+7ZHub0ABJSirw4Z5hvSv4Ub8MctJakJeoB2CN Bv+YdtkINM+2LuIXbPCppyoXBmvOv4sFMA== X-Google-Smtp-Source: AMrXdXtbA85An2UlTdL2XzbhfLYOvcD87z0EDVwbQ4RYCtnVmmT6y5CqsNyrZiS3va0/p+EQApDNig== X-Received: by 2002:ac8:5ed2:0:b0:3b6:313a:f461 with SMTP id s18-20020ac85ed2000000b003b6313af461mr12124149qtx.65.1674106005334; Wed, 18 Jan 2023 21:26:45 -0800 (PST) Received: from jesse-desktop.jtp-bos.lab (pool-108-26-182-112.bstnma.fios.verizon.net. [108.26.182.112]) by smtp.gmail.com with ESMTPSA id v21-20020ac87295000000b003a5430ee366sm507330qto.60.2023.01.18.21.26.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Jan 2023 21:26:45 -0800 (PST) From: Jesse Taube X-Google-Original-From: Jesse Taube To: linux-riscv@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Jesse Taube , Yimin Gu , Waldemar Brodkorb , Albert Ou , Palmer Dabbelt , Paul Walmsley Subject: [PATCH v1 1/2] riscv: Kconfig: Allow RV32 to build with no MMU Date: Thu, 19 Jan 2023 00:26:41 -0500 Message-Id: <20230119052642.1112171-2-Mr.Bossman075@gmail.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230119052642.1112171-1-Mr.Bossman075@gmail.com> References: <20230119052642.1112171-1-Mr.Bossman075@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230118_212648_995983_19D971DA X-CRM114-Status: GOOD ( 10.40 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Yimin Gu Some RISC-V 32bit ores do not have an MMU, and the kernel should be able to build for them. This patch enables the RV32 to be built with no MMU support. Signed-off-by: Yimin Gu CC: Jesse Taube Tested-By: Waldemar Brodkorb Signed-off-by: Jesse Taube Reported-by: kernel test robot Signed-off-by: Conor Dooley --- arch/riscv/Kconfig | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 59d18881f35b..49759dbe6a8f 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -163,8 +163,8 @@ config MMU config PAGE_OFFSET hex - default 0xC0000000 if 32BIT - default 0x80000000 if 64BIT && !MMU + default 0xC0000000 if 32BIT && MMU + default 0x80000000 if !MMU default 0xff60000000000000 if 64BIT config KASAN_SHADOW_OFFSET @@ -262,7 +262,6 @@ config ARCH_RV32I select GENERIC_LIB_ASHRDI3 select GENERIC_LIB_LSHRDI3 select GENERIC_LIB_UCMPDI2 - select MMU config ARCH_RV64I bool "RV64I" From patchwork Thu Jan 19 05:26:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jesse T X-Patchwork-Id: 13107432 X-Patchwork-Delegate: palmer@dabbelt.com 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4DB68C678D6 for ; Thu, 19 Jan 2023 05:27:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=PXtuEqnHDSVXQk94pqKM750IVd3tl8R7WuC9M0Yrims=; b=dYcYe9wLC7bk0/ TdrcTf0fTNPcczQjf2GKCnI1LNV1ubMi2gWdAzokEXhZSNQNlzIRmwEqgldvvwhGO5OT7QTL7LpG3 uUln2foGBpNhrhDOTuNImtvzjEUTfSpyKirVie3evHQQnDgcuIXx9nbFYW8Y7xFpvGJIphHCx4TYi OTb7zLMh6JjB6TYcF68DHIYfiUdVLLDmEEgmUBWdZD8qsTtq3cZ6Agth2WyEVnf8ovClc3tkVXW71 SlqtUbqCBqqj9SVWC9B1P8ucOR/B0X4s6BgZw3VtRwN912LCuItIbftz2PP7Ose95xc5f4aaJH2BA UDsIABeZzXfsEGYTUXQQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pINRt-003fXZ-Ly; Thu, 19 Jan 2023 05:26:53 +0000 Received: from mail-qt1-x835.google.com ([2607:f8b0:4864:20::835]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pINRp-003fVY-V0 for linux-riscv@lists.infradead.org; Thu, 19 Jan 2023 05:26:51 +0000 Received: by mail-qt1-x835.google.com with SMTP id jr10so794917qtb.7 for ; Wed, 18 Jan 2023 21:26:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=CvWquSrWDihZ0acdWJU0hmpgtyP5vfxrh4ZjBtKv7GY=; b=oVvCL60ecUhBG09j4Y1NsZFRHxe3MVE2V7Cmffled1FjHBdZnUskAjCtHgy3YWfu9c mPMCAS/8DS8ty4ksFnckwt9R5MQbofpmZKC9r3eABUzFFt5TyTBYFx7uZ+P/Zdbioale bl4TS6vHA+e5Qv3zYovsIblT1K7LkfBVCKo1JXwn3Ahsi6t/LHVKw1ACCe11Q4X67zxd c+gyi8m2S6r71GEvmT7nJnEdhSw8VfVIi16DuQO5iIdupZGa5/jbKLaa4OHl5k6nvItT oD405HVs8KDChN261QLu685xaE7UIWO/4Av1yps2ekHeYo9F8YEcszeHdaPZemxAMPcD gVzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=CvWquSrWDihZ0acdWJU0hmpgtyP5vfxrh4ZjBtKv7GY=; b=yFVBZ/UcN+MFhkfpfKkUVXw35+R/R5yJM+bT6yyTqOMaq64WLnrWj5Hn22hJzLWEdf CIIwFcX25diFw8LCTZzfMvutaARAL4Ptht2LhigUMLeCjXUmryOvlDD3hhUDT/+T7x/v n48bQpo7fE1jpdbcdFvgu+KGhYKXiazOu52vuWAXr6IEplMVP6X7oumvtPYmiKx91YF0 6rTawse9D6eXT9LRTC531d/o4p2a6K2eLNkcUPegaLc2WNc9ZR98xJU4bJEuAIrolFNd EWhN+EyVGdtp5VkN/eFfdIPbvkgeMfACfbjECEPSNMJCxJhzrMb4tfN7EvRC4I5sSMem M1sQ== X-Gm-Message-State: AFqh2kpSTEtLfAHQMMB9nIy00QNNamopIarbPWhxCvsM8hjdc0YowOMg WWdi6LmAW4D2Y68Ew1p0wRLxMq6vLrrwCg== X-Google-Smtp-Source: AMrXdXsjJu8KZfUuO0V9UN0rraw3kxggjI/UB7RLpcZFW/B0GdZEoVmL4URNPATKL/WkMQXZDTfqrA== X-Received: by 2002:a05:622a:598b:b0:3a9:8f6c:2d7c with SMTP id gb11-20020a05622a598b00b003a98f6c2d7cmr14850392qtb.52.1674106006392; Wed, 18 Jan 2023 21:26:46 -0800 (PST) Received: from jesse-desktop.jtp-bos.lab (pool-108-26-182-112.bstnma.fios.verizon.net. [108.26.182.112]) by smtp.gmail.com with ESMTPSA id v21-20020ac87295000000b003a5430ee366sm507330qto.60.2023.01.18.21.26.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Jan 2023 21:26:46 -0800 (PST) From: Jesse Taube X-Google-Original-From: Jesse Taube To: linux-riscv@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Jesse Taube , Yimin Gu , Waldemar Brodkorb , Albert Ou , Palmer Dabbelt , Paul Walmsley Subject: [PATCH v1 2/2] riscv: configs: Add nommu decfconfig for RV32 Date: Thu, 19 Jan 2023 00:26:42 -0500 Message-Id: <20230119052642.1112171-3-Mr.Bossman075@gmail.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230119052642.1112171-1-Mr.Bossman075@gmail.com> References: <20230119052642.1112171-1-Mr.Bossman075@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230118_212650_011622_82A18264 X-CRM114-Status: GOOD ( 11.17 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org 32bit risc-v can be configured to run without MMU. This patch adds an example configuration for RV32 nommu virtual machine. Signed-off-by: Jesse Taube Cc: Yimin Gu --- arch/riscv/configs/rv32_nommu_virt_defconfig | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 arch/riscv/configs/rv32_nommu_virt_defconfig diff --git a/arch/riscv/configs/rv32_nommu_virt_defconfig b/arch/riscv/configs/rv32_nommu_virt_defconfig new file mode 100644 index 000000000000..460907253a80 --- /dev/null +++ b/arch/riscv/configs/rv32_nommu_virt_defconfig @@ -0,0 +1,16 @@ +CONFIG_BLK_DEV_INITRD=y +# CONFIG_MMU is not set +CONFIG_COMPAT_32BIT_TIME=y +CONFIG_SOC_VIRT=y +CONFIG_NONPORTABLE=y +CONFIG_ARCH_RV32I=y +CONFIG_BINFMT_FLAT=y +CONFIG_SLOB=y +CONFIG_VIRTIO_BLK=y +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_SERIAL_OF_PLATFORM=y +CONFIG_VIRTIO_MMIO=y +CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y +CONFIG_EXT2_FS=y +CONFIG_PRINTK_TIME=y