It enables emulation of WDT in iMX8MM
Added WDT IRQ lines
Signed-off-by: Gaurav Sharma <[email protected]>
---
docs/system/arm/imx8mm-evk.rst | 1 +
hw/arm/Kconfig | 1 +
hw/arm/fsl-imx8mm.c | 28 ++++++++++++++++++++++++++++
include/hw/arm/fsl-imx8mm.h | 7 +++++++
4 files changed, 37 insertions(+)
diff --git a/docs/system/arm/imx8mm-evk.rst b/docs/system/arm/imx8mm-evk.rst
index a7cbb20708..e2762ef333 100644
--- a/docs/system/arm/imx8mm-evk.rst
+++ b/docs/system/arm/imx8mm-evk.rst
@@ -17,6 +17,7 @@ The ``imx8mm-evk`` machine implements the following devices:
* 5 GPIO Controllers
* 6 I2C Controllers
* 3 SPI Controllers
+ * 3 Watchdogs
* Secure Non-Volatile Storage (SNVS) including an RTC
* Clock Tree
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index d442ea0624..9498a96f30 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -638,6 +638,7 @@ config FSL_IMX8MM
select SDHCI
select PCI_EXPRESS_DESIGNWARE
select PCI_EXPRESS_FSL_IMX8M_PHY
+ select WDT_IMX2
config FSL_IMX8MM_EVK
bool
diff --git a/hw/arm/fsl-imx8mm.c b/hw/arm/fsl-imx8mm.c
index a9017c90a0..0a3e057bf3 100644
--- a/hw/arm/fsl-imx8mm.c
+++ b/hw/arm/fsl-imx8mm.c
@@ -197,6 +197,11 @@ static void fsl_imx8mm_init(Object *obj)
object_initialize_child(obj, name, &s->spi[i], TYPE_IMX_SPI);
}
+ for (i = 0; i < FSL_IMX8MM_NUM_WDTS; i++) {
+ g_autofree char *name = g_strdup_printf("wdt%d", i);
+ object_initialize_child(obj, name, &s->wdt[i], TYPE_IMX2_WDT);
+ }
+
object_initialize_child(obj, "pcie", &s->pcie, TYPE_DESIGNWARE_PCIE_HOST);
object_initialize_child(obj, "pcie_phy", &s->pcie_phy,
TYPE_FSL_IMX8M_PCIE_PHY);
@@ -481,6 +486,28 @@ static void fsl_imx8mm_realize(DeviceState *dev, Error
**errp)
sysbus_mmio_map(SYS_BUS_DEVICE(&s->snvs), 0,
fsl_imx8mm_memmap[FSL_IMX8MM_SNVS_HP].addr);
+ /* Watchdogs */
+ for (i = 0; i < FSL_IMX8MM_NUM_WDTS; i++) {
+ static const struct {
+ hwaddr addr;
+ unsigned int irq;
+ } wdog_table[FSL_IMX8MM_NUM_WDTS] = {
+ { fsl_imx8mm_memmap[FSL_IMX8MM_WDOG1].addr, FSL_IMX8MM_WDOG1_IRQ },
+ { fsl_imx8mm_memmap[FSL_IMX8MM_WDOG2].addr, FSL_IMX8MM_WDOG2_IRQ },
+ { fsl_imx8mm_memmap[FSL_IMX8MM_WDOG3].addr, FSL_IMX8MM_WDOG3_IRQ },
+ };
+
+ object_property_set_bool(OBJECT(&s->wdt[i]), "pretimeout-support",
+ true, &error_abort);
+ if (!sysbus_realize(SYS_BUS_DEVICE(&s->wdt[i]), errp)) {
+ return;
+ }
+
+ sysbus_mmio_map(SYS_BUS_DEVICE(&s->wdt[i]), 0, wdog_table[i].addr);
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->wdt[i]), 0,
+ qdev_get_gpio_in(gicdev, wdog_table[i].irq));
+ }
+
/* PCIe */
if (!sysbus_realize(SYS_BUS_DEVICE(&s->pcie), errp)) {
return;
@@ -521,6 +548,7 @@ static void fsl_imx8mm_realize(DeviceState *dev, Error
**errp)
case FSL_IMX8MM_SNVS_HP:
case FSL_IMX8MM_UART1 ... FSL_IMX8MM_UART4:
case FSL_IMX8MM_USDHC1 ... FSL_IMX8MM_USDHC3:
+ case FSL_IMX8MM_WDOG1 ... FSL_IMX8MM_WDOG3:
/* device implemented and treated above */
break;
diff --git a/include/hw/arm/fsl-imx8mm.h b/include/hw/arm/fsl-imx8mm.h
index f3a3304565..7107e932c6 100644
--- a/include/hw/arm/fsl-imx8mm.h
+++ b/include/hw/arm/fsl-imx8mm.h
@@ -21,6 +21,7 @@
#include "hw/pci-host/fsl_imx8m_phy.h"
#include "hw/sd/sdhci.h"
#include "hw/ssi/imx_spi.h"
+#include "hw/watchdog/wdt_imx2.h"
#include "qom/object.h"
#include "qemu/units.h"
@@ -38,6 +39,7 @@ enum FslImx8mmConfiguration {
FSL_IMX8MM_NUM_IRQS = 128,
FSL_IMX8MM_NUM_UARTS = 4,
FSL_IMX8MM_NUM_USDHCS = 3,
+ FSL_IMX8MM_NUM_WDTS = 3,
};
struct FslImx8mmState {
@@ -53,6 +55,7 @@ struct FslImx8mmState {
IMXI2CState i2c[FSL_IMX8MM_NUM_I2CS];
IMXSerialState uart[FSL_IMX8MM_NUM_UARTS];
SDHCIState usdhc[FSL_IMX8MM_NUM_USDHCS];
+ IMX2WdtState wdt[FSL_IMX8MM_NUM_WDTS];
DesignwarePCIEHost pcie;
FslImx8mPciePhyState pcie_phy;
};
@@ -198,6 +201,10 @@ enum FslImx8mmIrqs {
FSL_IMX8MM_GPIO5_LOW_IRQ = 72,
FSL_IMX8MM_GPIO5_HIGH_IRQ = 73,
+ FSL_IMX8MM_WDOG1_IRQ = 78,
+ FSL_IMX8MM_WDOG2_IRQ = 79,
+ FSL_IMX8MM_WDOG3_IRQ = 10,
+
FSL_IMX8MM_PCI_INTA_IRQ = 122,
FSL_IMX8MM_PCI_INTB_IRQ = 123,
FSL_IMX8MM_PCI_INTC_IRQ = 124,
--
2.34.1
