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Sun, 01 May 2022 20:07:06 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1651428426; bh=EK+Nd3HrCu2Q3vhwZTo952T/A31WqzQV30a1i1wUlsU=; h=X-UI-Sender-Class:Date:From:Subject:To:Cc; b=R4KB6B3SVUm+oSHCzPYmmqyFpePPKJrc+Q3eODZ77Wn5Uq14e19JdFjwNXh19yg5p /svHvLwbpdfxUr4237sp6jEXYOST17L7gRc/B4seJFc5WAKRZUfy0iG2Q5ltsubKHA ertKIkSaAzMnhNTuIgbasZenGPuzq4B8MvyhnvS8= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Message-ID: <4ad779bc-09f6-4041-d671-624fd0e22cf9@web.de> Date: Sun, 1 May 2022 20:07:05 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 From: Jan Kiszka Subject: [PATCH] hw/arm: virt: Add SBSA watchdog Content-Language: en-US To: Peter Maydell , qemu-arm Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:L68wGUAjY68kk+kubslSaDs/2FMLWO24Q6qEapqrKSVattMiWA4 S9BwZ32D9gsOEUaPZMsY4Log7byy26BqIZZhgMGOKqh6fWfHlOwzJQnkj9TUGYvaH0dMny5 zRuUch5LCuTFcac71rDNSFpCEE+OjED1zAUBE/b2xulFAujBc36BiCYLw/5oCUJuC1vTs85 FPGRU4otRAvY1f3jSsNQA== X-UI-Out-Filterresults: notjunk:1;V03:K0:1yeS6MU6+E8=:8qKvD1bhYJTb031LBko+lC YfZwtBXJFhNqEZQppx+R/cnixuoFkdzZjMy2g0DMkOpQ6WN52QggEZisNtypg2omELfRfpnTq mNXYr+QUrtgMY7mctqzAgiDczYFvOh1daz+QZA6RPazeVZaeWoa35VsbRsPQJlg5Wwrioy2Im XZ24GC+MUxPqDyGBaXSX4PK1AT5Mpzw5ZmWro/H3RDkjSvSjx4E4DH2uNEI+Vmn+jfkA0/IVf /bRSsAs7Wcn5YhIa0qFtf1AjKW5+YP94YEDCUUjsEZS99eU/2eB8JzdBRfAIpR2kJmiDhJgxb kZKbo5rStmJwFpgq5rfAEfRMBaxiQ3rC+63C+z9yqQM8QdYmlkUz27YMjRvMd3EO+G1hmsZGP 1LGNYN63QIRUy/dWaVDnonfULEatErUOmHcWx4OBiZmfdJiyh+ifni153hO3nXWghSU6+QH0s I22AP20QB0xDm6hIpP7fQWEfTucd/4cM1H3RVN+XfIselWmi407ccfd7Y6eZZxcqO2CRoeXNg iaqRQfNmIttsbL6HcUTU5wS45s/C9t5gOmUTLUHrPYfFxpQUOQt9CBgXrhYdcQNirK1rVijSW rbTFFbfxQoWlbPU0qdZiFaL48Yp/yOD/k9Gpt5MmVVUNP/+phRyvxma3vYmMzE2iagP6ISsuC p3v3xK39WE4T553w5Ez3sFkA6xLMzSeWJrmK02waljyKR/LFf2RWpCYiOgtvZ322I7P4gATjS GPRooU3DH5wW7VfNh3FKPttAr0APxZNVpGwjOTG6W0gb6h8ilPkqMjdyu0gd9K61NiTfeRlrS 2lLGfdOxsTqcxcowPT+jykzTlebQYEiEKhiLfnS2WFPSr+Fq4XHdYf5uRxtV9K8adjD5mWnUQ rXjw/CIdyd40Ix2MTx5/8CWX6xuomxrYcs+gX6H1ywatca8hXoQMXI+YkROR8atbED6/nFd/k hCb0UK02XMnxcOk86UuVlura11dGOYpyTB6Epa0GhlDux4EqbixIrvnsc7wvR5U/kYPYwWQ6q gosz1p4DJRm14fWvY93FWXKEmPHvDwgynyXM8mTy7qztqDKqFeU9X2V+iEcjXDEk6f47r0EGm tZ/PtdJ/pps4W8= 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=212.227.15.14; envelope-from=jan.kiszka@web.de; helo=mout.web.de X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=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: qemu-devel Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @web.de) X-ZM-MESSAGEID: 1651428480612100001 Content-Type: text/plain; charset="utf-8" From: Jan Kiszka The virt machine lacks a watchdog so far while the sbsa-ref has a simple model that is also supported by Linux and even U-Boot. Let's take it to allow, e.g., system integration tests of A/B software update under watchdog monitoring. Signed-off-by: Jan Kiszka --- An alternative could be sp805. However, QEMU has no support for that device yet. hw/arm/Kconfig | 1 + hw/arm/virt.c | 35 +++++++++++++++++++++++++++++++++++ include/hw/arm/virt.h | 3 +++ 3 files changed, 39 insertions(+) diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig index 97f3b38019..8df04a3533 100644 --- a/hw/arm/Kconfig +++ b/hw/arm/Kconfig @@ -29,6 +29,7 @@ config ARM_VIRT select ACPI_APEI select ACPI_VIOT select VIRTIO_MEM_SUPPORTED + select WDT_SBSA config CHEETAH bool diff --git a/hw/arm/virt.c b/hw/arm/virt.c index f94278935f..a7b85438a8 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -78,6 +78,7 @@ #include "hw/virtio/virtio-mem-pci.h" #include "hw/virtio/virtio-iommu.h" #include "hw/char/pl011.h" +#include "hw/watchdog/sbsa_gwdt.h" #include "qemu/guest-random.h" #define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \ @@ -154,6 +155,8 @@ static const MemMapEntry base_memmap[] =3D { [VIRT_NVDIMM_ACPI] =3D { 0x09090000, NVDIMM_ACPI_IO_LEN}, [VIRT_PVTIME] =3D { 0x090a0000, 0x00010000 }, [VIRT_SECURE_GPIO] =3D { 0x090b0000, 0x00001000 }, + [VIRT_GWDT_CONTROL] =3D { 0x090c0000, 0x00001000 }, + [VIRT_GWDT_REFRESH] =3D { 0x090d0000, 0x00001000 }, [VIRT_MMIO] =3D { 0x0a000000, 0x00000200 }, /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that siz= e */ [VIRT_PLATFORM_BUS] =3D { 0x0c000000, 0x02000000 }, @@ -190,6 +193,7 @@ static const int a15irqmap[] =3D { [VIRT_GPIO] =3D 7, [VIRT_SECURE_UART] =3D 8, [VIRT_ACPI_GED] =3D 9, + [VIRT_GWDT_WS0] =3D 10, [VIRT_MMIO] =3D 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */ [VIRT_GIC_V2M] =3D 48, /* ...to 48 + NUM_GICV2M_SPIS - 1 */ [VIRT_SMMU] =3D 74, /* ...to 74 + NUM_SMMU_IRQS - 1 */ @@ -902,6 +906,35 @@ static void create_rtc(const VirtMachineState *vms) g_free(nodename); } +static void create_wdt(const VirtMachineState *vms) +{ + hwaddr cbase =3D vms->memmap[VIRT_GWDT_CONTROL].base; + hwaddr csize =3D vms->memmap[VIRT_GWDT_CONTROL].size; + hwaddr rbase =3D vms->memmap[VIRT_GWDT_REFRESH].base; + hwaddr rsize =3D vms->memmap[VIRT_GWDT_REFRESH].size; + DeviceState *dev =3D qdev_new(TYPE_WDT_SBSA); + SysBusDevice *s =3D SYS_BUS_DEVICE(dev); + int irq =3D vms->irqmap[VIRT_GWDT_WS0]; + const char compat[] =3D "arm,sbsa-gwdt"; + MachineState *ms =3D MACHINE(vms); + char *nodename; + + sysbus_realize_and_unref(s, &error_fatal); + sysbus_mmio_map(s, 1, cbase); + sysbus_mmio_map(s, 0, rbase); + sysbus_connect_irq(s, 0, qdev_get_gpio_in(vms->gic, irq)); + + nodename =3D g_strdup_printf("/watchdog@%" PRIx64, cbase); + qemu_fdt_add_subnode(ms->fdt, nodename); + qemu_fdt_setprop(ms->fdt, nodename, "compatible", compat, sizeof(compa= t)); + qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", + 2, cbase, 2, csize, 2, rbase, 2, rsize); + qemu_fdt_setprop_cells(ms->fdt, nodename, "interrupts", + GIC_FDT_IRQ_TYPE_SPI, irq, + GIC_FDT_IRQ_FLAGS_LEVEL_HI); + g_free(nodename); +} + static DeviceState *gpio_key_dev; static void virt_powerdown_req(Notifier *n, void *opaque) { @@ -2240,6 +2273,8 @@ static void machvirt_init(MachineState *machine) create_rtc(vms); + create_wdt(vms); + create_pcie(vms); if (has_ged && aarch64 && firmware_loaded && virt_is_acpi_enabled(vms)= ) { diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h index 15feabac63..7f295f771e 100644 --- a/include/hw/arm/virt.h +++ b/include/hw/arm/virt.h @@ -86,6 +86,9 @@ enum { VIRT_ACPI_GED, VIRT_NVDIMM_ACPI, VIRT_PVTIME, + VIRT_GWDT_WS0, + VIRT_GWDT_CONTROL, + VIRT_GWDT_REFRESH, VIRT_LOWMEMMAP_LAST, }; -- 2.34.1