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[209.51.188.17]) by mx.google.com with ESMTPS id e9si2501392ybr.430.2021.01.12.06.37.18 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 12 Jan 2021 06:37:18 -0800 (PST) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=fail header.i=@linaro.org header.s=google header.b=wZF6SMDI; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from localhost ([::1]:56034 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kzKnN-0002pE-Pw for patch@linaro.org; Tue, 12 Jan 2021 09:37:17 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:50678) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kzKhR-0006DO-5U for qemu-devel@nongnu.org; Tue, 12 Jan 2021 09:31:09 -0500 Received: from mail-lj1-x22a.google.com ([2a00:1450:4864:20::22a]:41262) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kzKhN-0004fb-EZ for qemu-devel@nongnu.org; Tue, 12 Jan 2021 09:31:08 -0500 Received: by mail-lj1-x22a.google.com with SMTP id f11so3040140ljm.8 for ; Tue, 12 Jan 2021 06:31:05 -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=aSVqArs50dH6ORORx7j1pebjzF5WWw6+PDwzFqwRDNc=; b=wZF6SMDINx4eBMO6VmJVJ9zM5so/EZ3L9fBSFIVF/BJK3NYQ+ReRtgjPnE4F9v9RrF t979uwv/EYt1Bt3+sN6pfIUAYLuNrAYgVJ6q8eSeAUQl05q0xZd3psGuesZS4rhUPVbo a3r4RDtJ1HUwVBcwvb+EZjxiNg9hO6CxThkJXGqyCQsYCUMt0fUZm+9A57BlGEX7qmqF XTNYjqYQJb8dsiSVnvYPDIMuYDnFJNEuN83iJAtH1nWGNQ8BRW5fmTItJGr6VvJmexQG wLkf7UJb7Y9S+mZumlW54hfLSP2Fi76tc3RRHJ0JYAzA6w6FU83U8Jy9uqcKxD2DyBVz emuA== 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=aSVqArs50dH6ORORx7j1pebjzF5WWw6+PDwzFqwRDNc=; b=lqnnWc4W+Du+Yp4fbx1yvd+GvSyRezvE5lVlepdrgg8howEGOgu1PD5PINq35kLuH9 cJwxwCyvyBCgU2Lb0KeUbhgrWqa2DoAeM3zRmnruaps+cvh849XpZYF2pvdKbvQbFtH+ b13Xe82G7/9nmjR2k/81yOo618vBOyovSdLoVdZBtrp+QHnV9mD1+B6zOry4G6F2FTBu 7SLIk0M6Xca+6KW7r0+LDZoK9NNJgM0c8nngz8i1wXGzESxkZy48ieBEG8/w5f8bkHlV utJr8TEDl63EWmJ/cfFxXu9xjjmZrZF78naY3Vmr5oXRTF2JWoaV7Ihuk9x2zHs7p/dW ZzqQ== X-Gm-Message-State: AOAM530PR+olnG8gb2NwEXNBLLv2wfmNh+pzya3VDEpuAZ3s0VcmcPaP /3iyeayx9TjSbUxdPzbiqC9RJw== X-Received: by 2002:a2e:2a83:: with SMTP id q125mr2169658ljq.436.1610461863000; Tue, 12 Jan 2021 06:31:03 -0800 (PST) Received: from localhost.localdomain ([2.92.195.184]) by smtp.gmail.com with ESMTPSA id c24sm365499ljn.116.2021.01.12.06.31.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Jan 2021 06:31:02 -0800 (PST) From: Maxim Uvarov To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCHv4 1/2] hw: gpio: implement gpio-pwr driver for qemu reset/poweroff Date: Tue, 12 Jan 2021 17:30:57 +0300 Message-Id: <20210112143058.12159-2-maxim.uvarov@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210112143058.12159-1-maxim.uvarov@linaro.org> References: <20210112143058.12159-1-maxim.uvarov@linaro.org> Received-SPF: pass client-ip=2a00:1450:4864:20::22a; envelope-from=maxim.uvarov@linaro.org; helo=mail-lj1-x22a.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=ham 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, Maxim Uvarov , f4bug@amsat.org, Jose.Marinho@arm.com, tf-a@lists.trustedfirmware.org Errors-To: qemu-devel-bounces+patch=linaro.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 --- 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 -- 2.17.1 Reviewed-by: Hao Wu Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>
Reviewed-by: Hao Wu <wuhaotsh@google.com> 
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..8ed8d5d24f --- /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'))