mirror of https://github.com/xemu-project/xemu.git
hw/arm: Add watchdog timer to Allwinner H40 and Bananapi board
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 <linux@roeck-us.net> Reviewed-by: Strahinja Jankovic <strahinja.p.jankovic@gmail.com> Message-id: 20240115182757.1095012-4-linux@roeck-us.net Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@ -25,6 +25,7 @@ The Banana Pi M2U machine supports the following devices:
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* SATA
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* TWI (I2C)
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* USB 2.0
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* Hardware Watchdog
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Limitations
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"""""""""""
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@ -33,7 +34,6 @@ Currently, Banana Pi M2U does *not* support the following features:
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- Graphical output via HDMI, GPU and/or the Display Engine
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- Audio output
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- Hardware Watchdog
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- Real Time Clock
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Also see the 'unimplemented' array in the Allwinner R40 SoC module
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@ -411,6 +411,7 @@ config ALLWINNER_R40
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select AHCI
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select ALLWINNER_SRAMC
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select ALLWINNER_A10_PIT
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select ALLWINNER_WDT
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select AXP2XX_PMU
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select SERIAL
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select ARM_TIMER
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@ -53,6 +53,7 @@ const hwaddr allwinner_r40_memmap[] = {
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[AW_R40_DEV_OHCI2] = 0x01c1c400,
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[AW_R40_DEV_CCU] = 0x01c20000,
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[AW_R40_DEV_PIT] = 0x01c20c00,
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[AW_R40_DEV_WDT] = 0x01c20c90,
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[AW_R40_DEV_UART0] = 0x01c28000,
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[AW_R40_DEV_UART1] = 0x01c28400,
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[AW_R40_DEV_UART2] = 0x01c28800,
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@ -279,6 +280,8 @@ static void allwinner_r40_init(Object *obj)
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object_property_add_alias(obj, "clk1-freq", OBJECT(&s->timer),
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"clk1-freq");
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object_initialize_child(obj, "wdt", &s->wdt, TYPE_AW_WDT_SUN4I);
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object_initialize_child(obj, "ccu", &s->ccu, TYPE_AW_R40_CCU);
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for (int i = 0; i < AW_R40_NUM_MMCS; i++) {
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@ -545,6 +548,11 @@ static void allwinner_r40_realize(DeviceState *dev, Error **errp)
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sysbus_connect_irq(SYS_BUS_DEVICE(&s->emac), 0,
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qdev_get_gpio_in(DEVICE(&s->gic), AW_R40_GIC_SPI_EMAC));
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/* WDT */
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sysbus_realize(SYS_BUS_DEVICE(&s->wdt), &error_fatal);
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sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->wdt), 0,
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allwinner_r40_memmap[AW_R40_DEV_WDT], 1);
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/* Unimplemented devices */
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for (unsigned i = 0; i < ARRAY_SIZE(r40_unimplemented); i++) {
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create_unimplemented_device(r40_unimplemented[i].device_name,
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@ -33,6 +33,7 @@
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#include "hw/net/allwinner-sun8i-emac.h"
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#include "hw/usb/hcd-ohci.h"
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#include "hw/usb/hcd-ehci.h"
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#include "hw/watchdog/allwinner-wdt.h"
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#include "target/arm/cpu.h"
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#include "sysemu/block-backend.h"
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@ -54,6 +55,7 @@ enum {
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AW_R40_DEV_OHCI2,
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AW_R40_DEV_CCU,
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AW_R40_DEV_PIT,
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AW_R40_DEV_WDT,
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AW_R40_DEV_UART0,
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AW_R40_DEV_UART1,
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AW_R40_DEV_UART2,
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@ -114,6 +116,7 @@ struct AwR40State {
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const hwaddr *memmap;
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AwSRAMCState sramc;
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AwA10PITState timer;
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AwWdtState wdt;
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AllwinnerAHCIState sata;
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AwSdHostState mmc[AW_R40_NUM_MMCS];
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EHCISysBusState ehci[AW_R40_NUM_USB];
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