From nobody Tue Feb 10 10:03:24 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1645776969275119.409053145901; Fri, 25 Feb 2022 00:16:09 -0800 (PST) Received: from localhost ([::1]:45104 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nNVln-0004Wf-Vo for importer@patchew.org; Fri, 25 Feb 2022 03:16:08 -0500 Received: from eggs.gnu.org ([209.51.188.92]:47088) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nNVZi-00080j-NR for qemu-devel@nongnu.org; Fri, 25 Feb 2022 03:03:41 -0500 Received: from mail.loongson.cn ([114.242.206.163]:41746 helo=loongson.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nNVZK-0002R7-05 for qemu-devel@nongnu.org; Fri, 25 Feb 2022 03:03:38 -0500 Received: from localhost.localdomain (unknown [10.2.5.185]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9DxqMg8jRhiw9UGAA--.8228S3; Fri, 25 Feb 2022 16:03:11 +0800 (CST) From: Xiaojuan Yang To: qemu-devel@nongnu.org Subject: [RFC PATCH v6 01/29] target/loongarch: Add system emulation introduction Date: Fri, 25 Feb 2022 03:02:40 -0500 Message-Id: <20220225080308.1405-2-yangxiaojuan@loongson.cn> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220225080308.1405-1-yangxiaojuan@loongson.cn> References: <20220225080308.1405-1-yangxiaojuan@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: AQAAf9DxqMg8jRhiw9UGAA--.8228S3 X-Coremail-Antispam: 1UD129KBjvJXoWxGryUur48uw17ZF1fAF45GFg_yoWrXFy3pr nxua4fKr48Gr9rArsagFy3Xr15trn3Cr17Xa1xAry09FZrAr1vqr1rt3WktFy7C34rCFyY qry8Gr4UWa15W3DanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnUUvcSsGvfC2KfnxnUUI43ZEXa7xR_UUUUUUUUU== X-CM-SenderInfo: p1dqw5xldry3tdq6z05rqj20fqof0/ Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=114.242.206.163; envelope-from=yangxiaojuan@loongson.cn; helo=loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-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: , Cc: mark.cave-ayland@ilande.co.uk, richard.henderson@linaro.org, Song Gao Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1645776969894100001 Content-Type: text/plain; charset="utf-8" Signed-off-by: Xiaojuan Yang Signed-off-by: Song Gao --- MAINTAINERS | 8 +++++++ docs/system/loongarch/loongson3.rst | 37 +++++++++++++++++++++++++++++ target/loongarch/README | 28 ++++++++++++++++++++++ 3 files changed, 73 insertions(+) create mode 100644 docs/system/loongarch/loongson3.rst diff --git a/MAINTAINERS b/MAINTAINERS index 568fb731f7..df3d738d17 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1115,6 +1115,14 @@ F: hw/net/*i82596* F: include/hw/net/lasi_82596.h F: pc-bios/hppa-firmware.img =20 +LoongArch Machines +------------------ +Virt +M: Xiaojuan Yang +M: Song Gao +S: Maintained +F: docs/system/loongarch/loongson3.rst + M68K Machines ------------- an5206 diff --git a/docs/system/loongarch/loongson3.rst b/docs/system/loongarch/lo= ongson3.rst new file mode 100644 index 0000000000..367fff9d9d --- /dev/null +++ b/docs/system/loongarch/loongson3.rst @@ -0,0 +1,37 @@ +loongson3 virt generic platform (``virt``) +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D + +The ``virt`` machine use gpex host bridge, and there are some +emulated devices on virt board, such as loongson7a RTC device, +IOAPIC device, ACPI device and so on. + +Supported devices +----------------- + +The ``virt`` machine supports: +- Gpex host bridge +- Ls7a RTC device +- Ls7a IOAPIC device +- Ls7a ACPI device +- Fw_cfg device +- PCI/PCIe devices +- Memory device +- CPU device. Type: Loongson-3A5000. + +CPU and machine Type +-------------------- + +The ``qemu-system-loongarch64`` provides emulation for virt +machine. You can specify the machine type ``virt`` and +cpu type ``Loongson-3A5000``. + +Boot options +------------ + +Now the ``virt`` machine can start using -bios parameter: + +.. code-block:: bash + + $ qemu-system-loongarch64 -M virt -cpu Loongson-3A5000 -smp 2 -m 1G \ + -display none -serial stdio \ + -bios loongarch_bios.bin diff --git a/target/loongarch/README b/target/loongarch/README index 383db6cc15..de44d39561 100644 --- a/target/loongarch/README +++ b/target/loongarch/README @@ -71,6 +71,34 @@ ./qemu-loongarch64 /opt/clfs/usr/bin/pwd ... =20 +- System emulation + + Mainly emulate a virt 3A5000 board and ls7a bridge that is not exactly t= he same as the host. + 3A5000 support multiple interrupt cascading while here we just emulate t= he extioi interrupt + cascading. LS7A1000 host bridge support multiple devices, such as sata, = gmac, uart, rtc + and so on. But we just realize the rtc. Others use the qemu common devic= es. It does not affect + the general use. We also introduced the emulation of devices at docs/sys= tem/loongarch/loongson3.rst. + + You can compile the binaries by youself or just get all required binarie= s from the github for testing. + + 1.Download kernel and the cross-tools.(vmlinux) + + https://github.com/loongson/linux/tree/loongarch-next + https://github.com/loongson/build-tools/releases/latest/download/loo= ngarch64-clfs-20211202-cross-tools.tar.xz + + 2.Download uefi code.(loongarch_bios.bin) + + https://github.com/loongson/edk2/tree/LoongArch + https://github.com/loongson/edk2-platforms + + 3.Download the clfs-system and make a ramdisk with busybox.(ramdisk) + + 4.Run with command,eg: + + ./build/qemu-system-loongarch64 -m 4G -smp 4 --cpu Loongson-3A5000 --ma= chine loongson3-ls7a -kernel ./vmlinux -initrd ./ramdisk -append "root=3D/= dev/ram console=3DttyS0,115200 rdinit=3D/sbin/init loglevel=3D8" -monitor t= cp::4000,server,nowait -nographic + +All binaries can get from here directly: + git clone https://github.com/yangxiaojuan-loongson/qemu-binary =20 - Note. We can get the latest LoongArch documents or LoongArch tools at https://= github.com/loongson/ --=20 2.27.0