From patchwork Fri May 27 17:27:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stafford Horne X-Patchwork-Id: 12863613 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 47966C433F5 for ; Fri, 27 May 2022 17:28:59 +0000 (UTC) Received: from localhost ([::1]:55736 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nudli-0005Fu-8G for qemu-devel@archiver.kernel.org; Fri, 27 May 2022 13:28:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60766) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nudkV-0003OD-V7 for qemu-devel@nongnu.org; Fri, 27 May 2022 13:27:43 -0400 Received: from mail-pj1-x1034.google.com ([2607:f8b0:4864:20::1034]:36744) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nudkU-00048s-3e for qemu-devel@nongnu.org; Fri, 27 May 2022 13:27:43 -0400 Received: by mail-pj1-x1034.google.com with SMTP id u12-20020a17090a1d4c00b001df78c7c209so7694428pju.1 for ; Fri, 27 May 2022 10:27:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=dKxraNqOZmC1Qjd1FJlCqqyBvierGHSKYTP+opFyWIE=; b=Yc87GM7+F/nYRNEVqsZA8OJ4YLOq9NqBGBEzFB8cquToTRhQp/2IwQTPAObKVNRBen xy5lEjmV4XzaVbrBtHAUg1XO3xLxRHIP5fZyb5/tSYhuf5/cTJXlcI1MI6R9VCQFm+kk nsQhgGVdrkN9gkbegRP7dE0xIgOCZtJV2VTr2SjWv/voxPI012arrt7boo/YVOG0zzpZ emX0aElByuwOH8GlpC4xCDC3+CCLuud5vAuMGLeLAyAVIpewPCxqbmx1hOKjAWUYLqPc lvWOl8dhzR1OENf86LFVcF5cJssKiY+u0ZIg6qKaLUdyCu4DijCrWFUF5eDSmJOa0HFq DHGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=dKxraNqOZmC1Qjd1FJlCqqyBvierGHSKYTP+opFyWIE=; b=nzR7KdNX84VkxMFCQguwf+Iza4SejKVFq0FucE89+aTIGeNmSi8mbvpn2RhUUj3Sh4 dcVx3B5SlCxuAO0dd/1sHH7hZGUxczTbyUxgF1AsdW9s/1rITLXd14YCeus8+M53b/lT 1xPSwB1/BfCzmVu1jg4ZwfZSWC96RfxnAa9n1ulpxPOWjaV64O9bxopwVanf1SHoVkod BPWHtiAk1mckXBOmvQLFMu6jB59vcE/S1L7QJCIDwPrCpZIxTA4ZRmMQevDxWRBuXB6O SmGZzR15olkzYLmd0MQSszuyNHJeAXjjhfVlG94+27VJI2K5ynoPnZ2nZqh9Ul45MTQf MiCw== X-Gm-Message-State: AOAM53035uESX+t3kR8QpwsDq3OqZPuV1aw4NvfdM/zpmF45SU0zXF3/ PebTCYmPyyD+H8Rc6IIdFdGnszifPXqIeQ== X-Google-Smtp-Source: ABdhPJzsjUwA4OHUFiopRUYj+HP+AsaLxQoaYY1U2mrRMfaxsXCSZG9SfCXxNB/Ho0pNZY00xLeG8g== X-Received: by 2002:a17:903:244c:b0:162:4b19:a0e7 with SMTP id l12-20020a170903244c00b001624b19a0e7mr18380075pls.44.1653672459159; Fri, 27 May 2022 10:27:39 -0700 (PDT) Received: from localhost ([2409:10:24a0:4700:e8ad:216a:2a9d:6d0c]) by smtp.gmail.com with ESMTPSA id u27-20020a63455b000000b003db0f2d135esm3599647pgk.49.2022.05.27.10.27.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 May 2022 10:27:38 -0700 (PDT) From: Stafford Horne To: QEMU Development Cc: Openrisc , "Jason A. Donenfeld" , Stafford Horne Subject: [RFC PATCH 0/3] OpenRISC Semihosting and Virt Date: Sat, 28 May 2022 02:27:27 +0900 Message-Id: <20220527172731.1742837-1-shorne@gmail.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::1034; envelope-from=shorne@gmail.com; helo=mail-pj1-x1034.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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" Hello, I provide 2 options here 2 help with OpenRISC CI testing sush as the wireguard testing that Jason has been working on. The two are: 1. Add semihosting to openrisc to handle l.nop based Halt and Reset 2. Define a new virt platform, this includes widing in the sifive test device that provides a syscon interface to allow for shutdown and reboot. We could upstream both of them or just one. I am leaning toward dropping the semi-hosting work and just going ahead with virt. The semi-hosting stuff was discussed here: - https://www.mail-archive.com/qemu-devel@nongnu.org/msg884560.html Also, I started to propose architecture changes here: - https://github.com/openrisc/openrisc.github.io/pull/18 However, looking at how other platforms define semihosting it seems the openrisc requirements are quite different. We do not use the open/close/write etc syscalls as riscv, arm etc do. Stafford Horne (3): target/openrisc: Add basic support for semihosting hw/openrisc: Split re-usable boot time apis out to boot.c hw/openrisc: Add the OpenRISC virtual machine configs/devices/or1k-softmmu/default.mak | 3 + hw/openrisc/Kconfig | 9 + hw/openrisc/boot.c | 127 +++++++ hw/openrisc/meson.build | 2 + hw/openrisc/openrisc_sim.c | 106 +----- hw/openrisc/virt.c | 429 +++++++++++++++++++++++ include/hw/openrisc/boot.h | 34 ++ qemu-options.hx | 16 +- target/openrisc/cpu.h | 2 + target/openrisc/helper.h | 1 + target/openrisc/meson.build | 1 + target/openrisc/openrisc-semi.c | 54 +++ target/openrisc/sys_helper.c | 5 + target/openrisc/translate.c | 6 + 14 files changed, 690 insertions(+), 105 deletions(-) create mode 100644 hw/openrisc/boot.c create mode 100644 hw/openrisc/virt.c create mode 100644 include/hw/openrisc/boot.h create mode 100644 target/openrisc/openrisc-semi.c