[v3,3/8] hw/arm/fsl-imx25: Wire up watchdog

Commit Message

Guenter Roeck May 17, 2020, 4:21 p.m. UTC

With this commit, the watchdog on imx25-pdk is fully operational,
including pretimeout support.

Reviewed-by: Philippe Mathieu-Daudé <[e-mail]>
Signed-off-by: Guenter Roeck <[e-mail]>
---
v3: No change
v2: Select WDT_IMX2 explicitly
    Added Philippe's Reviewed-by: tag

 hw/arm/Kconfig             |  1 +
 hw/arm/fsl-imx25.c         | 10 ++++++++++
 include/hw/arm/fsl-imx25.h |  5 +++++
 3 files changed, 16 insertions(+)

Patch

diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index adf401e827..54a49aeabd 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -358,6 +358,7 @@  config FSL_IMX25
     select IMX
     select IMX_FEC
     select IMX_I2C
+    select WDT_IMX2
     select DS1338
 
 config FSL_IMX31
diff --git a/hw/arm/fsl-imx25.c b/hw/arm/fsl-imx25.c
index 6f1a82ce3d..cdaa79c26b 100644
--- a/hw/arm/fsl-imx25.c
+++ b/hw/arm/fsl-imx25.c
@@ -87,6 +87,7 @@  static void fsl_imx25_init(Object *obj)
                               TYPE_CHIPIDEA);
     }
 
+    sysbus_init_child_obj(obj, "wdt", &s->wdt, sizeof(s->wdt), TYPE_IMX2_WDT);
 }
 
 static void fsl_imx25_realize(DeviceState *dev, Error **errp)
@@ -302,6 +303,15 @@  static void fsl_imx25_realize(DeviceState *dev, Error **errp)
                                             usb_table[i].irq));
     }
 
+    /* Watchdog */
+    object_property_set_bool(OBJECT(&s->wdt), true, "pretimeout-support",
+                             &error_abort);
+    object_property_set_bool(OBJECT(&s->wdt), true, "realized", &error_abort);
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->wdt), 0, FSL_IMX25_WDT_ADDR);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->wdt), 0,
+                                      qdev_get_gpio_in(DEVICE(&s->avic),
+                                                       FSL_IMX25_WDT_IRQ));
+
     /* initialize 2 x 16 KB ROM */
     memory_region_init_rom(&s->rom[0], OBJECT(dev), "imx25.rom0",
                            FSL_IMX25_ROM0_SIZE, &err);
diff --git a/include/hw/arm/fsl-imx25.h b/include/hw/arm/fsl-imx25.h
index 5e196bbf05..9e228dacea 100644
--- a/include/hw/arm/fsl-imx25.h
+++ b/include/hw/arm/fsl-imx25.h
@@ -29,6 +29,7 @@ 
 #include "hw/gpio/imx_gpio.h"
 #include "hw/sd/sdhci.h"
 #include "hw/usb/chipidea.h"
+#include "hw/watchdog/wdt_imx2.h"
 #include "exec/memory.h"
 #include "target/arm/cpu.h"
 
@@ -60,6 +61,7 @@  typedef struct FslIMX25State {
     IMXGPIOState   gpio[FSL_IMX25_NUM_GPIOS];
     SDHCIState     esdhc[FSL_IMX25_NUM_ESDHCS];
     ChipideaState  usb[FSL_IMX25_NUM_USBS];
+    IMX2WdtState   wdt;
     MemoryRegion   rom[2];
     MemoryRegion   iram;
     MemoryRegion   iram_alias;
@@ -229,6 +231,8 @@  typedef struct FslIMX25State {
 #define FSL_IMX25_GPIO1_SIZE    0x4000
 #define FSL_IMX25_GPIO2_ADDR    0x53FD0000
 #define FSL_IMX25_GPIO2_SIZE    0x4000
+#define FSL_IMX25_WDT_ADDR      0x53FDC000
+#define FSL_IMX25_WDT_SIZE      0x4000
 #define FSL_IMX25_USB1_ADDR     0x53FF4000
 #define FSL_IMX25_USB1_SIZE     0x0200
 #define FSL_IMX25_USB2_ADDR     0x53FF4400
@@ -268,5 +272,6 @@  typedef struct FslIMX25State {
 #define FSL_IMX25_ESDHC2_IRQ    8
 #define FSL_IMX25_USB1_IRQ      37
 #define FSL_IMX25_USB2_IRQ      35
+#define FSL_IMX25_WDT_IRQ       55
 
 #endif /* FSL_IMX25_H */