From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54135) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ys1k4-0005Dl-R5 for qemu-devel@nongnu.org; Tue, 12 May 2015 00:24:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Ys1k0-0006nU-Nx for qemu-devel@nongnu.org; Tue, 12 May 2015 00:24:28 -0400 Received: from mail-pd0-f177.google.com ([209.85.192.177]:36093) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ys1k0-0006nO-I4 for qemu-devel@nongnu.org; Tue, 12 May 2015 00:24:24 -0400 Received: by pdea3 with SMTP id a3so168585419pde.3 for ; Mon, 11 May 2015 21:24:23 -0700 (PDT) From: shannon.zhao@linaro.org Date: Tue, 12 May 2015 12:24:09 +0800 Message-Id: <1431404656-7180-1-git-send-email-shannon.zhao@linaro.org> Subject: [Qemu-devel] [PATCH 0/7] Add system_powerdown support on ARM through ACPI and DT List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org, peter.maydell@linaro.org, imammedo@redhat.com, mst@redhat.com, pbonzini@redhat.com, wei@redhat.com, arnd@arndb.de, christoffer.dall@linaro.org Cc: hangaohuai@huawei.com, peter.huangpeng@huawei.com, zhaoshenglong@huawei.com From: Shannon Zhao ACPI SPEC 5.0 defines GPIO-signaled ACPI Events for Hardware-reduced platforms(like ARM). It uses GPIO pin to trigger an event to the guest. For QEMU, here we add PL061 GPIO controller and use PIN 3 for system_powerdown, reserving PIN 0, 1, 2 for PCI hotplug, CPU hotplug and memory hotplug. This patchset adds system_powerdown support on ARM through both ACPI and DT ways. It adds a GPIO controller(here is PL061) in machine virt and uses GPIO-singled event for ACPI while gpio-keys for DT. It can be fetched from [1] and has been tested for the guests starting by ACPI or DT while guests use systemd or acpid. a) ACPI way. As ACPI on ARM64 doesn't support probing amba device, we should convert the PL061 to platform device(apply patch[2]). In addition, we should use ACPI to start VM, referring to below script. QEMU_EFI.fd can be fetched from [3]. Note: The guest kernel must have the ARM64 ACPI support(the related patches are in upstream kernel now) and uart SBSA support for ACPI [4]. qemu-system-aarch64 \ -smp 1 -m 1024 -M virt \ -cpu cortex-a57 -nographic \ -monitor telnet::4444,server,nowait \ -bios QEMU_EFI.fd \ -kernel Image \ -initrd guestfs.cpio.gz \ -append "rdinit=/sbin/init console=ttySBSA mem=512M root=/dev/ram earlycon=pl011,0x9000000 rw acpi=force" b) DT way. Apply patch[2] as well. Start vm as usual. qemu-system-aarch64 \ -smp 1 -m 1024 -M virt \ -cpu cortex-a57 -nographic \ -monitor telnet::4444,server,nowait \ -kernel Image \ -initrd guestfs.cpio.gz \ -append "rdinit=/sbin/init console=ttyAMA0 mem=512M root=/dev/ram earlycon=pl011,0x9000000 rw" Guest internal setup: If your guest FS uses systemd, you should check file /lib/udev/rules.d/70-power-switch.rules and add the following line in it if it doesn't exist. SUBSYSTEM=="input", KERNEL=="event*", SUBSYSTEMS=="platform", ATTRS{keys}=="116", TAG+="power-switch" If your guest FS uses acpid, you should check it has /etc/acpi/powerbtn.sh and /etc/acpi/events/powerbtn. Refer to [5] for the setup of acpid. Thanks, Shannon [1] https://git.linaro.org/people/shannon.zhao/qemu.git/shortlog/refs/heads/PowerButton [2] http://people.linaro.org/~shannon.zhao/PowerButton/0001-PL061-convert-to-platform-device.patch [3] http://people.linaro.org/~shannon.zhao/ACPI_ARM/QEMU_EFI.fd [4] http://people.linaro.org/~shannon.zhao/ACPI_ARM/0001-tty-SBSA-compatible-UART.patch [5] https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/GPIOPowerButton Shannon Zhao (7): hw/arm/virt: Add a GPIO controller hw/arm/virt-acpi-build: Add GPIO controller in ACPI DSDT table hw/arm/virt-acpi-build: Add power button device in ACPI DSDT table hw/acpi/aml-build: Add aml_gpio_int() term hw/arm/virt-acpi-build: Add _E03 for Power Button hw/arm/virt: Add QEMU powerdown notifier and hook it to GPIO Pin 3 hw/arm/virt: Add gpio-keys node for Poweroff using DT hw/acpi/aml-build.c | 60 +++++++++++++++++++++++++++++++++++++++++++++ hw/arm/virt-acpi-build.c | 43 ++++++++++++++++++++++++++++++++ hw/arm/virt.c | 60 +++++++++++++++++++++++++++++++++++++++++++++ include/hw/acpi/aml-build.h | 16 ++++++++++++ include/hw/arm/virt.h | 1 + 5 files changed, 180 insertions(+) -- 2.1.0