From patchwork Wed Feb 2 22:35:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 1587809 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 bilbo.ozlabs.org (Postfix) with ESMTPS id 4JpxXv6BMKz9s07 for ; Thu, 3 Feb 2022 09:38:39 +1100 (AEDT) Received: from localhost ([::1]:50404 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nFOGq-0008TQ-S9 for incoming@patchwork.ozlabs.org; Wed, 02 Feb 2022 17:38:36 -0500 Received: from eggs.gnu.org ([209.51.188.92]:39898) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nFOEF-0008Py-UJ for qemu-devel@nongnu.org; Wed, 02 Feb 2022 17:35:55 -0500 Received: from mout.kundenserver.de ([217.72.192.74]:40093) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nFOEA-0004QA-45 for qemu-devel@nongnu.org; Wed, 02 Feb 2022 17:35:55 -0500 Received: from quad ([82.142.10.94]) by mrelayeu.kundenserver.de (mreue108 [212.227.15.183]) with ESMTPSA (Nemesis) id 1MlwFp-1mWjjN1UoN-00izjt; Wed, 02 Feb 2022 23:35:30 +0100 From: Laurent Vivier To: qemu-devel@nongnu.org Subject: [PATCH 0/3] m68k: virt: add a firmware to the virt machine (petit boot) Date: Wed, 2 Feb 2022 23:35:25 +0100 Message-Id: <20220202223528.1260154-1-laurent@vivier.eu> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Provags-ID: V03:K1:NjGUJK8RzmeRmpdiKfkwJ/8ElhO2kkdA2d6lXTnOGQr1qG9h5we +jIbfI/XR5YDVVB/SyKi200rRkqSNY+LZJzxNuzb/LbmiVkpdAUY2vq3lWRsGE3zbx5UlQg InyFLQV4REo1xtKKtlzBLSTdZLT7hgCSjBMimMGMMH5onyGMr67bRajZD/vmcBeGdyapLEH C0fbzaiZiZpNM27HJcR5w== X-UI-Out-Filterresults: notjunk:1;V03:K0:ozfbZrLLIfc=:QVYC4ZkS0r8DBT77bUVBMe aPFNsJt6V/RywNKfZaaJvhR2TbMF9V8K6WJUDwQrlQwrWSQ56NYbq/ADU05RY/0hFe2px29xU dS4TglG3jq2tZZ1WYXeCQPKNK1GQ9YbjP/F7YSyKzKrOM/jpV0YTXps9z0D3h6Y5sWirPN+ZT V4lTYK1CQehqPROCsaECaxFm8n5L7DyqADg5H7+gaIYtacYlq+VKQRNcy5el207co5ba8r9UG /G04/XiBZe+7bVRmS2aQUUFmzFyR7sZhWMeuxgE5Gs9tWUUoMaHBTBj129fNE9odi/UAaFjBP ELjlLAGYHaPkV+MkDHrUeDOI1MQj8Iwc8+3D3iOrn6sgIWiFmubeRta0hH4gXCz0nG2HjHeE8 4q+e3L0zyn4okrXrOsJhPOoCdMulUm69ADymcVmEtCA5z5cfbP6cfZ7rHAERuE9Hhxjndwol1 9ebnizrv8/I67pT1NRG1G8bpNuYw232bkWB0C+LEgrhrHyyJvflOuXm8tJQNolmMXwnJMphuQ 8IK0cg6OOudeZ4LEGJRYIKL2spXqeU8NAjRX5t6UsKIRCMCGB2kIKwEuTISGh67O/0H0XxFGm 0gedhVYCJwUzcjwBljd0SzkVRdQzLKobEztqdaSGRkiB1B99wo8GeSUs8/VeDfkeR8MVX80DS b6M7pORx6PeRuvFiKcnLF9Kb387B06ZYooEZhbNITXSeFO5soZGihfpOnp8//y36wn+U= Received-SPF: none client-ip=217.72.192.74; envelope-from=laurent@vivier.eu; helo=mout.kundenserver.de 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, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=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: Laurent Vivier Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" For the moment, the virt machine can only be started by using QEMU "-kernel" parameter, and thus can only load the kernel/initramfs from the host filesystem. Adding a firmware is a good way to allow the machine to boot and update a kernel from the guest point of view (disk, network, cdrom, ...). As I don't want to port a firmware to this machine, the easy way to do that is to use linux. This approach is already in use by petit boot on the bare metal POWER systems. This series adds a bootstrap ROM to load the firmware (petit boot), and a buildroot environment to build the petit boot firmware for the m68k virt machine. To build the bootstram ROM: $ git submodule init roms/m68k-virt $ git submodule updage roms/m68k-virt $ make -C roms m68k-virt-bootrom To build the firmware: $ git submodule init roms/buildroot $ git submodule update roms/buildroot $ make -C roms m68k-virt-firmware Build qemu-system-m68k and then you can start QEMU and play with petit boot: $ ./qemu-system-m68k -M virt -nographic Petit boot supports various bootloader configuration files, like grub, pxe, kboot, syslinux... For instance: menuentry "Linux 5.16.0-virt (debian 10.0)" { search --set=root --label root linux /boot/vmlinux-5.16.0-virt ro root=/dev/vda2 console=ttyGF0 } default="vmlinux-5.16.0-virt" vmlinux-5.16.0-virt='/boot/vmlinux-5.16.0-virt root=/dev/vda2 console=ttyGF0' default vmlinux-5.16.0-virt (debian 10.0) label vmlinux-5.16.0-virt (debian 10.0) kernel /boot/vmlinux-5.16.0-virt append root=/dev/vda2 console=ttyGF0 Laurent Vivier (3): m68k: bootinfo entry size must be aligned on 4 bytes m68k: virt: add a bootstrap ROM m68k: virt: add a firmware (petitboot) configure | 3 +- hw/m68k/bootinfo.h | 4 +- include/hw/misc/virt_ctrl.h | 6 ++ hw/m68k/virt.c | 38 ++++++++++++ hw/misc/virt_ctrl.c | 111 +++++++++++++++++++++++++++++++++++- .gitmodules | 6 ++ pc-bios/meson.build | 3 + roms/Makefile | 15 +++++ roms/buildroot | 1 + roms/m68k-virt | 1 + 10 files changed, 183 insertions(+), 5 deletions(-) create mode 160000 roms/buildroot create mode 160000 roms/m68k-virt