From patchwork Mon Oct 7 03:34:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: LIU Zhiwei X-Patchwork-Id: 13824043 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 EDE48CFB43C for ; Mon, 7 Oct 2024 04:19:22 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sxfCg-0004hl-NP; Mon, 07 Oct 2024 00:18:39 -0400 Received: from eggs.gnu.org ([209.51.188.92]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sxf8a-0004Tk-Ol; Mon, 07 Oct 2024 00:18:06 -0400 Received: from out30-124.freemail.mail.aliyun.com ([115.124.30.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sxf3h-0001Gq-Jp; Mon, 07 Oct 2024 00:09:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1728274155; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=E2twuR14LYSGtq8m/vSLS1GgHxOHXTDk0j0rsNDxxBE=; b=W9vk+JqyTx/l8bKPh0JvWRjYuTR24uFd/8DUaasAVeHMPKPEQR6Kzgq8TbN7h8eXpvHaLl54A5sy2L8vqUiexTTujR5kYH7DKQoZag7t1LIhzLms7ZEbhjmlLK6FnGGQwb5gzWZsivAm7ZQqASV335iTY1omjvC3eq9mt/cfVns= Received: from localhost.localdomain(mailfrom:zhiwei_liu@linux.alibaba.com fp:SMTPD_---0WGLWXng_1728274153) by smtp.aliyun-inc.com; Mon, 07 Oct 2024 12:09:14 +0800 From: LIU Zhiwei To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, palmer@dabbelt.com, alistair.francis@wdc.com, dbarboza@ventanamicro.com, liwei1518@gmail.com, bmeng.cn@gmail.com, TANG Tiancheng Subject: [PATCH v1 7/7] target/riscv: Expose sxl32 configuration in RISC-V CPU Date: Mon, 7 Oct 2024 11:34:00 +0800 Message-Id: <20241007033400.50163-8-zhiwei_liu@linux.alibaba.com> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20241007033400.50163-1-zhiwei_liu@linux.alibaba.com> References: <20241007033400.50163-1-zhiwei_liu@linux.alibaba.com> MIME-Version: 1.0 Received-SPF: pass client-ip=115.124.30.124; envelope-from=zhiwei_liu@linux.alibaba.com; helo=out30-124.freemail.mail.aliyun.com X-Spam_score_int: -174 X-Spam_score: -17.5 X-Spam_bar: ----------------- X-Spam_report: (-17.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_DEF_SPF_WL=-7.5 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: TANG Tiancheng Enable with "-cpu rv64,sxl32=on". When sxl32 is enabled, RV64 can boot 32-bit Linux with 64-bit Opensbi while requiring to make minor modifications to the Linux kernel source code. How to patch linux: https://git Signed-off-by: TANG Tiancheng --- target/riscv/cpu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 9dbbb1ca77..86984b7f8f 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -2665,6 +2665,7 @@ static Property riscv_cpu_properties[] = { #ifndef CONFIG_USER_ONLY DEFINE_PROP_UINT64("resetvec", RISCVCPU, env.resetvec, DEFAULT_RSTVEC), + DEFINE_PROP_BOOL("sxl32", RISCVCPU, cfg.sxl32, false), #endif DEFINE_PROP_BOOL("short-isa-string", RISCVCPU, cfg.short_isa_string, false),