hw/arm: Add WDT to Allwinner-A10 and Cubieboard

This patch adds WDT to Allwinner-A10 and Cubieboard. WDT is added as an overlay to the Timer module memory map. Signed-off-by: Strahinja Jankovic <strahinja.p.jankovic@gmail.com> Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com> Message-id: 20230326202256.22980-3-strahinja.p.jankovic@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
qemu · Apr 20, 2023 · 470f9f2 · 470f9f2
1 parent 17b9730
commit 470f9f2
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diff --git a/docs/system/arm/cubieboard.rst b/docs/system/arm/cubieboard.rst
@@ -15,3 +15,4 @@ Emulated devices:
 - USB controller
 - SATA controller
 - TWI (I2C) controller
+- Watchdog timer
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
@@ -325,6 +325,7 @@ config ALLWINNER_A10
     select ALLWINNER_A10_PIC
     select ALLWINNER_A10_CCM
     select ALLWINNER_A10_DRAMC
+    select ALLWINNER_WDT
     select ALLWINNER_EMAC
     select ALLWINNER_I2C
     select AXP209_PMU

diff --git a/hw/arm/allwinner-a10.c b/hw/arm/allwinner-a10.c
@@ -38,6 +38,7 @@
 #define AW_A10_EHCI_BASE        0x01c14000
 #define AW_A10_OHCI_BASE        0x01c14400
 #define AW_A10_SATA_BASE        0x01c18000
+#define AW_A10_WDT_BASE         0x01c20c90
 #define AW_A10_RTC_BASE         0x01c20d00
 #define AW_A10_I2C0_BASE        0x01c2ac00
 
@@ -92,6 +93,8 @@ static void aw_a10_init(Object *obj)
     object_initialize_child(obj, "mmc0", &s->mmc0, TYPE_AW_SDHOST_SUN4I);
 
     object_initialize_child(obj, "rtc", &s->rtc, TYPE_AW_RTC_SUN4I);
+
+    object_initialize_child(obj, "wdt", &s->wdt, TYPE_AW_WDT_SUN4I);
 }
 
 static void aw_a10_realize(DeviceState *dev, Error **errp)
@@ -203,6 +206,10 @@ static void aw_a10_realize(DeviceState *dev, Error **errp)
     sysbus_realize(SYS_BUS_DEVICE(&s->i2c0), &error_fatal);
     sysbus_mmio_map(SYS_BUS_DEVICE(&s->i2c0), 0, AW_A10_I2C0_BASE);
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c0), 0, qdev_get_gpio_in(dev, 7));
+
+    /* WDT */
+    sysbus_realize(SYS_BUS_DEVICE(&s->wdt), &error_fatal);
+    sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->wdt), 0, AW_A10_WDT_BASE, 1);
 }
 
 static void aw_a10_class_init(ObjectClass *oc, void *data)

diff --git a/include/hw/arm/allwinner-a10.h b/include/hw/arm/allwinner-a10.h
@@ -13,6 +13,7 @@
 #include "hw/misc/allwinner-a10-ccm.h"
 #include "hw/misc/allwinner-a10-dramc.h"
 #include "hw/i2c/allwinner-i2c.h"
+#include "hw/watchdog/allwinner-wdt.h"
 #include "sysemu/block-backend.h"
 
 #include "target/arm/cpu.h"
@@ -41,6 +42,7 @@ struct AwA10State {
     AwSdHostState mmc0;
     AWI2CState i2c0;
     AwRtcState rtc;
+    AwWdtState wdt;
     MemoryRegion sram_a;
     EHCISysBusState ehci[AW_A10_NUM_USB];
     OHCISysBusState ohci[AW_A10_NUM_USB];