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Sat, 13 Jan 2024 11:16:58 -0800 (PST) From: Guenter Roeck To: Peter Maydell Cc: Paolo Bonzini , Beniamino Galvani , Strahinja Jankovic , qemu-devel@nongnu.org, qemu-arm@nongnu.org, Guenter Roeck Subject: [PATCH 3/3] hw/arm: Add watchdog timer to Allwinner H40 and Bananapi board Date: Sat, 13 Jan 2024 11:16:51 -0800 Message-Id: <20240113191651.1313226-4-linux@roeck-us.net> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240113191651.1313226-1-linux@roeck-us.net> References: <20240113191651.1313226-1-linux@roeck-us.net> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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=2607:f8b0:4864:20::630; envelope-from=groeck7@gmail.com; helo=mail-pl1-x630.google.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FORGED_FROMDOMAIN=0.248, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, WEIRD_QUOTING=0.001 autolearn=no 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1705173509052100001 Content-Type: text/plain; charset="utf-8" Add watchdog timer support to Allwinner-H40 and Bananapi. The watchdog timer is added as an overlay to the Timer module memory map. Signed-off-by: Guenter Roeck --- docs/system/arm/bananapi_m2u.rst | 2 +- hw/arm/Kconfig | 1 + hw/arm/allwinner-r40.c | 8 ++++++++ include/hw/arm/allwinner-r40.h | 3 +++ 4 files changed, 13 insertions(+), 1 deletion(-) diff --git a/docs/system/arm/bananapi_m2u.rst b/docs/system/arm/bananapi_m2= u.rst index 542310591d..587b488655 100644 --- a/docs/system/arm/bananapi_m2u.rst +++ b/docs/system/arm/bananapi_m2u.rst @@ -25,6 +25,7 @@ The Banana Pi M2U machine supports the following devices: * SATA * TWI (I2C) * USB 2.0 + * Hardware Watchdog =20 Limitations """"""""""" @@ -33,7 +34,6 @@ Currently, Banana Pi M2U does *not* support the following= features: =20 - Graphical output via HDMI, GPU and/or the Display Engine - Audio output -- Hardware Watchdog - Real Time Clock =20 Also see the 'unimplemented' array in the Allwinner R40 SoC module diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig index 98ca5ebc7d..386edbae15 100644 --- a/hw/arm/Kconfig +++ b/hw/arm/Kconfig @@ -411,6 +411,7 @@ config ALLWINNER_R40 select AHCI select ALLWINNER_SRAMC select ALLWINNER_A10_PIT + select ALLWINNER_WDT select AXP2XX_PMU select SERIAL select ARM_TIMER diff --git a/hw/arm/allwinner-r40.c b/hw/arm/allwinner-r40.c index f90d59fb5e..334692ef97 100644 --- a/hw/arm/allwinner-r40.c +++ b/hw/arm/allwinner-r40.c @@ -53,6 +53,7 @@ const hwaddr allwinner_r40_memmap[] =3D { [AW_R40_DEV_OHCI2] =3D 0x01c1c400, [AW_R40_DEV_CCU] =3D 0x01c20000, [AW_R40_DEV_PIT] =3D 0x01c20c00, + [AW_R40_DEV_WDT] =3D 0x01c20c90, [AW_R40_DEV_UART0] =3D 0x01c28000, [AW_R40_DEV_UART1] =3D 0x01c28400, [AW_R40_DEV_UART2] =3D 0x01c28800, @@ -279,6 +280,8 @@ static void allwinner_r40_init(Object *obj) object_property_add_alias(obj, "clk1-freq", OBJECT(&s->timer), "clk1-freq"); =20 + object_initialize_child(obj, "wdt", &s->wdt, TYPE_AW_WDT_SUN4I); + object_initialize_child(obj, "ccu", &s->ccu, TYPE_AW_R40_CCU); =20 for (int i =3D 0; i < AW_R40_NUM_MMCS; i++) { @@ -553,6 +556,11 @@ static void allwinner_r40_realize(DeviceState *dev, Er= ror **errp) sysbus_connect_irq(SYS_BUS_DEVICE(&s->emac), 0, qdev_get_gpio_in(DEVICE(&s->gic), AW_R40_GIC_SPI_EM= AC)); =20 + /* WDT */ + sysbus_realize(SYS_BUS_DEVICE(&s->wdt), &error_fatal); + sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->wdt), 0, + allwinner_r40_memmap[AW_R40_DEV_WDT], 1); + /* Unimplemented devices */ for (unsigned i =3D 0; i < ARRAY_SIZE(r40_unimplemented); i++) { create_unimplemented_device(r40_unimplemented[i].device_name, diff --git a/include/hw/arm/allwinner-r40.h b/include/hw/arm/allwinner-r40.h index c589fcc1c1..66c38e7d90 100644 --- a/include/hw/arm/allwinner-r40.h +++ b/include/hw/arm/allwinner-r40.h @@ -33,6 +33,7 @@ #include "hw/net/allwinner-sun8i-emac.h" #include "hw/usb/hcd-ohci.h" #include "hw/usb/hcd-ehci.h" +#include "hw/watchdog/allwinner-wdt.h" #include "target/arm/cpu.h" #include "sysemu/block-backend.h" =20 @@ -54,6 +55,7 @@ enum { AW_R40_DEV_OHCI2, AW_R40_DEV_CCU, AW_R40_DEV_PIT, + AW_R40_DEV_WDT, AW_R40_DEV_UART0, AW_R40_DEV_UART1, AW_R40_DEV_UART2, @@ -114,6 +116,7 @@ struct AwR40State { const hwaddr *memmap; AwSRAMCState sramc; AwA10PITState timer; + AwWdtState wdt; AllwinnerAHCIState sata; AwSdHostState mmc[AW_R40_NUM_MMCS]; EHCISysBusState ehci[AW_R40_NUM_USB]; --=20 2.39.2