From patchwork Fri Jan 22 21:52:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxim Uvarov X-Patchwork-Id: 1430581 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=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=x1VB69CE; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 4DMtQ46zT3z9sCD for ; Sat, 23 Jan 2021 08:56:44 +1100 (AEDT) Received: from localhost ([::1]:46548 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l34Q6-0003Rt-RU for incoming@patchwork.ozlabs.org; Fri, 22 Jan 2021 16:56:42 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:41400) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l34MA-0000VS-Ot for qemu-devel@nongnu.org; Fri, 22 Jan 2021 16:52:40 -0500 Received: from mail-lf1-x134.google.com ([2a00:1450:4864:20::134]:47017) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1l34M5-0007IT-5G for qemu-devel@nongnu.org; Fri, 22 Jan 2021 16:52:38 -0500 Received: by mail-lf1-x134.google.com with SMTP id o10so9555316lfl.13 for ; Fri, 22 Jan 2021 13:52:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=iEyWJZhAZPnLFDMgDIpbGYkV2+NYdmfH2gdbQlh81PQ=; b=x1VB69CEfqvH9ZKopFDbeFrgpyFv3/alukJxhChqnrbFmVYswJ/YZ5GEYvLRjOZ+ys 3iqxdCKmuEVEXEwpZqgxboa2tA6IhodXppBGFUWdhpYk4t4zVU1OyRP8mCIARJIeoHn/ PaaaYe0gsPLipDB3llTTFwFe8cxOOMjQLDwErVLGHDYwjIZIfcXCiGzlqpLGrcFi1VQS 7K6M94OFL4OG8OFcTIrD0pljjK3dVQj1BNi8z8xU8wCxrDsPE/ISxIvD9HpsDoscY5y+ 41IfLRKq3ISjLHLUb6VsH1Wb6M06gIzuEtcVn4p57EjsDTRe8t6/hYKwwEBrzyidhAzT XsOw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=iEyWJZhAZPnLFDMgDIpbGYkV2+NYdmfH2gdbQlh81PQ=; b=FKFnSVdzN/WfRlJNBxxpZfLawh82Yoq1Gkzc/xcTdsLUziRHYI9jIeRqjI4NF+97g8 5ZZpJ2swNp/SHemCfzfpqYvKe2k4hgE5LMj+i0gQW0pymho1ckUwwVZH8wuJRZSboaj/ WcEJ/AWg7ujBh9S7LG5flvXPcgPwYWEjsDESm6y+LYyyku9iMoVeY8r10ruG9xz9ZpsX kVTNAidTzNv510Q3+/9+irZpiZoyI/Fl7pEXJOgCCuPA8KvsG/Hiw9pR1ZJdUy1MZdFH 7bgeQuvhs6sfRamKrSQiF1JnOZsb3UHpCl30l1u1xao2xjeceLH0Vf+vh1b3VBlrL1mj ikHA== X-Gm-Message-State: AOAM530aoxXi6O4bU+8knyCoKjeexut8V8aMTlEyvDuCMVYH4VAvJceH rFRwgHgMa8KtMdRDZidYPhly8A== X-Google-Smtp-Source: ABdhPJwnQFj586CwgXNThKYZDdLaYntRpu+M4FBTB0mDZIUGJS4LSUryP7vbHgrLfoHiAJwWbtUimw== X-Received: by 2002:a19:a0a:: with SMTP id 10mr250338lfk.397.1611352351093; Fri, 22 Jan 2021 13:52:31 -0800 (PST) Received: from localhost.localdomain ([176.59.42.245]) by smtp.gmail.com with ESMTPSA id a11sm1019890lfl.22.2021.01.22.13.52.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Jan 2021 13:52:30 -0800 (PST) From: Maxim Uvarov To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCHv9 1/3] hw: gpio: implement gpio-pwr driver for qemu reset/poweroff Date: Sat, 23 Jan 2021 00:52:20 +0300 Message-Id: <20210122215222.8320-2-maxim.uvarov@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210122215222.8320-1-maxim.uvarov@linaro.org> References: <20210122215222.8320-1-maxim.uvarov@linaro.org> Received-SPF: pass client-ip=2a00:1450:4864:20::134; envelope-from=maxim.uvarov@linaro.org; helo=mail-lf1-x134.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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, drjones@redhat.com, Maxim Uvarov , Jose.Marinho@arm.com, f4bug@amsat.org, tf-a@lists.trustedfirmware.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Implement gpio-pwr driver to allow reboot and poweroff machine. This is simple driver with just 2 gpios lines. Current use case is to reboot and poweroff virt machine in secure mode. Secure pl066 gpio chip is needed for that. Signed-off-by: Maxim Uvarov Reviewed-by: Hao Wu Reviewed-by: Peter Maydell --- hw/gpio/Kconfig | 3 ++ hw/gpio/gpio_pwr.c | 70 +++++++++++++++++++++++++++++++++++++++++++++ hw/gpio/meson.build | 1 + 3 files changed, 74 insertions(+) create mode 100644 hw/gpio/gpio_pwr.c diff --git a/hw/gpio/Kconfig b/hw/gpio/Kconfig index b6fdaa2586..f0e7405f6e 100644 --- a/hw/gpio/Kconfig +++ b/hw/gpio/Kconfig @@ -8,5 +8,8 @@ config PL061 config GPIO_KEY bool +config GPIO_PWR + bool + config SIFIVE_GPIO bool diff --git a/hw/gpio/gpio_pwr.c b/hw/gpio/gpio_pwr.c new file mode 100644 index 0000000000..7714fa0dc4 --- /dev/null +++ b/hw/gpio/gpio_pwr.c @@ -0,0 +1,70 @@ +/* + * GPIO qemu power controller + * + * Copyright (c) 2020 Linaro Limited + * + * Author: Maxim Uvarov + * + * Virtual gpio driver which can be used on top of pl061 + * to reboot and shutdown qemu virtual machine. One of use + * case is gpio driver for secure world application (ARM + * Trusted Firmware.). + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +/* + * QEMU interface: + * two named input GPIO lines: + * 'reset' : when asserted, trigger system reset + * 'shutdown' : when asserted, trigger system shutdown + */ + +#include "qemu/osdep.h" +#include "hw/sysbus.h" +#include "sysemu/runstate.h" + +#define TYPE_GPIOPWR "gpio-pwr" +OBJECT_DECLARE_SIMPLE_TYPE(GPIO_PWR_State, GPIOPWR) + +struct GPIO_PWR_State { + SysBusDevice parent_obj; +}; + +static void gpio_pwr_reset(void *opaque, int n, int level) +{ + if (level) { + qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); + } +} + +static void gpio_pwr_shutdown(void *opaque, int n, int level) +{ + if (level) { + qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); + } +} + +static void gpio_pwr_init(Object *obj) +{ + DeviceState *dev = DEVICE(obj); + + qdev_init_gpio_in_named(dev, gpio_pwr_reset, "reset", 1); + qdev_init_gpio_in_named(dev, gpio_pwr_shutdown, "shutdown", 1); +} + +static const TypeInfo gpio_pwr_info = { + .name = TYPE_GPIOPWR, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(GPIO_PWR_State), + .instance_init = gpio_pwr_init, +}; + +static void gpio_pwr_register_types(void) +{ + type_register_static(&gpio_pwr_info); +} + +type_init(gpio_pwr_register_types) diff --git a/hw/gpio/meson.build b/hw/gpio/meson.build index 5c0a7d7b95..79568f00ce 100644 --- a/hw/gpio/meson.build +++ b/hw/gpio/meson.build @@ -1,5 +1,6 @@ softmmu_ss.add(when: 'CONFIG_E500', if_true: files('mpc8xxx.c')) softmmu_ss.add(when: 'CONFIG_GPIO_KEY', if_true: files('gpio_key.c')) +softmmu_ss.add(when: 'CONFIG_GPIO_PWR', if_true: files('gpio_pwr.c')) softmmu_ss.add(when: 'CONFIG_MAX7310', if_true: files('max7310.c')) softmmu_ss.add(when: 'CONFIG_PL061', if_true: files('pl061.c')) softmmu_ss.add(when: 'CONFIG_PUV3', if_true: files('puv3_gpio.c'))