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From: Peter Maydell <peter.maydell@linaro.org>
To: qemu-devel@nongnu.org
Subject: [PULL 33/43] hw/arm/fsl-imx8mp: Add SNVS
Date: Tue, 25 Feb 2025 18:04:59 +0000
Message-ID: <20250225180510.1318207-34-peter.maydell@linaro.org>
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From: Bernhard Beschow <shentey@gmail.com>
SNVS contains an RTC which allows Linux to deal correctly with time. This is
particularly useful when handling persistent storage which will be done in =
the
next patch.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-id: 20250223114708.1780-7-shentey@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
docs/system/arm/imx8mp-evk.rst | 1 +
include/hw/arm/fsl-imx8mp.h | 2 ++
hw/arm/fsl-imx8mp.c | 10 ++++++++++
3 files changed, 13 insertions(+)
diff --git a/docs/system/arm/imx8mp-evk.rst b/docs/system/arm/imx8mp-evk.rst
index f0df346113f..22541c54424 100644
--- a/docs/system/arm/imx8mp-evk.rst
+++ b/docs/system/arm/imx8mp-evk.rst
@@ -12,6 +12,7 @@ The ``imx8mp-evk`` machine implements the following devic=
es:
* Up to 4 Cortex-A53 cores
* Generic Interrupt Controller (GICv3)
* 4 UARTs
+ * Secure Non-Volatile Storage (SNVS) including an RTC
* Clock Tree
=20
Boot options
diff --git a/include/hw/arm/fsl-imx8mp.h b/include/hw/arm/fsl-imx8mp.h
index ce5188e7f23..26e24e99a15 100644
--- a/include/hw/arm/fsl-imx8mp.h
+++ b/include/hw/arm/fsl-imx8mp.h
@@ -12,6 +12,7 @@
#include "cpu.h"
#include "hw/char/imx_serial.h"
#include "hw/intc/arm_gicv3_common.h"
+#include "hw/misc/imx7_snvs.h"
#include "hw/misc/imx8mp_analog.h"
#include "hw/misc/imx8mp_ccm.h"
#include "qom/object.h"
@@ -36,6 +37,7 @@ struct FslImx8mpState {
GICv3State gic;
IMX8MPCCMState ccm;
IMX8MPAnalogState analog;
+ IMX7SNVSState snvs;
IMXSerialState uart[FSL_IMX8MP_NUM_UARTS];
};
=20
diff --git a/hw/arm/fsl-imx8mp.c b/hw/arm/fsl-imx8mp.c
index bc15b25ca16..18c9c54ddc6 100644
--- a/hw/arm/fsl-imx8mp.c
+++ b/hw/arm/fsl-imx8mp.c
@@ -201,6 +201,8 @@ static void fsl_imx8mp_init(Object *obj)
=20
object_initialize_child(obj, "analog", &s->analog, TYPE_IMX8MP_ANALOG);
=20
+ object_initialize_child(obj, "snvs", &s->snvs, TYPE_IMX7_SNVS);
+
for (i =3D 0; i < FSL_IMX8MP_NUM_UARTS; i++) {
g_autofree char *name =3D g_strdup_printf("uart%d", i + 1);
object_initialize_child(obj, name, &s->uart[i], TYPE_IMX_SERIAL);
@@ -344,6 +346,13 @@ static void fsl_imx8mp_realize(DeviceState *dev, Error=
**errp)
qdev_get_gpio_in(gicdev, serial_table[i].irq));
}
=20
+ /* SNVS */
+ if (!sysbus_realize(SYS_BUS_DEVICE(&s->snvs), errp)) {
+ return;
+ }
+ sysbus_mmio_map(SYS_BUS_DEVICE(&s->snvs), 0,
+ fsl_imx8mp_memmap[FSL_IMX8MP_SNVS_HP].addr);
+
/* Unimplemented devices */
for (i =3D 0; i < ARRAY_SIZE(fsl_imx8mp_memmap); i++) {
switch (i) {
@@ -352,6 +361,7 @@ static void fsl_imx8mp_realize(DeviceState *dev, Error =
**errp)
case FSL_IMX8MP_GIC_DIST:
case FSL_IMX8MP_GIC_REDIST:
case FSL_IMX8MP_RAM:
+ case FSL_IMX8MP_SNVS_HP:
case FSL_IMX8MP_UART1 ... FSL_IMX8MP_UART4:
/* device implemented and treated above */
break;
--=20
2.43.0