Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

45 files changed, 1131 insertions, 204 deletions

diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index afd38539b9..71d8b26c41 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -182,6 +182,7 @@ config MTK_ADSP_IPC
 config SYSFB
 	bool
 	select BOOT_VESA_SUPPORT
+	select SCREEN_INFO
 
 config SYSFB_SIMPLEFB
 	bool "Mark VGA/VBE/EFI FB as generic system framebuffer"
diff --git a/drivers/firmware/arm_ffa/bus.c b/drivers/firmware/arm_ffa/bus.c
index 1c7940ba55..2f557e90f2 100644
--- a/drivers/firmware/arm_ffa/bus.c
+++ b/drivers/firmware/arm_ffa/bus.c
@@ -105,7 +105,7 @@ static struct attribute *ffa_device_attributes_attrs[] = {
 };
 ATTRIBUTE_GROUPS(ffa_device_attributes);
 
-struct bus_type ffa_bus_type = {
+const struct bus_type ffa_bus_type = {
 	.name		= "arm_ffa",
 	.match		= ffa_device_match,
 	.probe		= ffa_device_probe,
diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c
index c15928b8c5..77c78be6e7 100644
--- a/drivers/firmware/arm_scmi/bus.c
+++ b/drivers/firmware/arm_scmi/bus.c
@@ -141,6 +141,17 @@ out:
 	return ret;
 }
 
+static int scmi_protocol_table_register(const struct scmi_device_id *id_table)
+{
+	int ret = 0;
+	const struct scmi_device_id *entry;
+
+	for (entry = id_table; entry->name && ret == 0; entry++)
+		ret = scmi_protocol_device_request(entry);
+
+	return ret;
+}
+
 /**
  * scmi_protocol_device_unrequest  - Helper to unrequest a device
  *
@@ -186,6 +197,15 @@ static void scmi_protocol_device_unrequest(const struct scmi_device_id *id_table
 	mutex_unlock(&scmi_requested_devices_mtx);
 }
 
+static void
+scmi_protocol_table_unregister(const struct scmi_device_id *id_table)
+{
+	const struct scmi_device_id *entry;
+
+	for (entry = id_table; entry->name; entry++)
+		scmi_protocol_device_unrequest(entry);
+}
+
 static const struct scmi_device_id *
 scmi_dev_match_id(struct scmi_device *scmi_dev, struct scmi_driver *scmi_drv)
 {
@@ -263,7 +283,7 @@ static void scmi_dev_remove(struct device *dev)
 		scmi_drv->remove(scmi_dev);
 }
 
-struct bus_type scmi_bus_type = {
+const struct bus_type scmi_bus_type = {
 	.name =	"scmi_protocol",
 	.match = scmi_dev_match,
 	.probe = scmi_dev_probe,
@@ -279,7 +299,7 @@ int scmi_driver_register(struct scmi_driver *driver, struct module *owner,
 	if (!driver->probe)
 		return -EINVAL;
 
-	retval = scmi_protocol_device_request(driver->id_table);
+	retval = scmi_protocol_table_register(driver->id_table);
 	if (retval)
 		return retval;
 
@@ -299,7 +319,7 @@ EXPORT_SYMBOL_GPL(scmi_driver_register);
 void scmi_driver_unregister(struct scmi_driver *driver)
 {
 	driver_unregister(&driver->driver);
-	scmi_protocol_device_unrequest(driver->id_table);
+	scmi_protocol_table_unregister(driver->id_table);
 }
 EXPORT_SYMBOL_GPL(scmi_driver_unregister);
 
diff --git a/drivers/firmware/arm_scmi/clock.c b/drivers/firmware/arm_scmi/clock.c
index e2050adbf8..134019297d 100644
--- a/drivers/firmware/arm_scmi/clock.c
+++ b/drivers/firmware/arm_scmi/clock.c
@@ -13,7 +13,7 @@
 #include "notify.h"
 
 /* Updated only after ALL the mandatory features for that version are merged */
-#define SCMI_PROTOCOL_SUPPORTED_VERSION		0x20000
+#define SCMI_PROTOCOL_SUPPORTED_VERSION		0x30000
 
 enum scmi_clock_protocol_cmd {
 	CLOCK_ATTRIBUTES = 0x3,
@@ -28,8 +28,13 @@ enum scmi_clock_protocol_cmd {
 	CLOCK_POSSIBLE_PARENTS_GET = 0xC,
 	CLOCK_PARENT_SET = 0xD,
 	CLOCK_PARENT_GET = 0xE,
+	CLOCK_GET_PERMISSIONS = 0xF,
 };
 
+#define CLOCK_STATE_CONTROL_ALLOWED	BIT(31)
+#define CLOCK_PARENT_CONTROL_ALLOWED	BIT(30)
+#define CLOCK_RATE_CONTROL_ALLOWED	BIT(29)
+
 enum clk_state {
 	CLK_STATE_DISABLE,
 	CLK_STATE_ENABLE,
@@ -49,6 +54,8 @@ struct scmi_msg_resp_clock_attributes {
 #define SUPPORTS_RATE_CHANGE_REQUESTED_NOTIF(x)	((x) & BIT(30))
 #define SUPPORTS_EXTENDED_NAMES(x)		((x) & BIT(29))
 #define SUPPORTS_PARENT_CLOCK(x)		((x) & BIT(28))
+#define SUPPORTS_EXTENDED_CONFIG(x)		((x) & BIT(27))
+#define SUPPORTS_GET_PERMISSIONS(x)		((x) & BIT(1))
 	u8 name[SCMI_SHORT_NAME_MAX_SIZE];
 	__le32 clock_enable_latency;
 };
@@ -152,14 +159,18 @@ struct clock_info {
 	u32 version;
 	int num_clocks;
 	int max_async_req;
+	bool notify_rate_changed_cmd;
+	bool notify_rate_change_requested_cmd;
 	atomic_t cur_async_req;
 	struct scmi_clock_info *clk;
 	int (*clock_config_set)(const struct scmi_protocol_handle *ph,
 				u32 clk_id, enum clk_state state,
-				u8 oem_type, u32 oem_val, bool atomic);
+				enum scmi_clock_oem_config oem_type,
+				u32 oem_val, bool atomic);
 	int (*clock_config_get)(const struct scmi_protocol_handle *ph,
-				u32 clk_id, u8 oem_type, u32 *attributes,
-				bool *enabled, u32 *oem_val, bool atomic);
+				u32 clk_id, enum scmi_clock_oem_config oem_type,
+				u32 *attributes, bool *enabled, u32 *oem_val,
+				bool atomic);
 };
 
 static enum scmi_clock_protocol_cmd evt_2_cmd[] = {
@@ -167,6 +178,15 @@ static enum scmi_clock_protocol_cmd evt_2_cmd[] = {
 	CLOCK_RATE_CHANGE_REQUESTED_NOTIFY,
 };
 
+static inline struct scmi_clock_info *
+scmi_clock_domain_lookup(struct clock_info *ci, u32 clk_id)
+{
+	if (clk_id >= ci->num_clocks)
+		return ERR_PTR(-EINVAL);
+
+	return ci->clk + clk_id;
+}
+
 static int
 scmi_clock_protocol_attributes_get(const struct scmi_protocol_handle *ph,
 				   struct clock_info *ci)
@@ -189,6 +209,17 @@ scmi_clock_protocol_attributes_get(const struct scmi_protocol_handle *ph,
 	}
 
 	ph->xops->xfer_put(ph, t);
+
+	if (!ret) {
+		if (!ph->hops->protocol_msg_check(ph, CLOCK_RATE_NOTIFY, NULL))
+			ci->notify_rate_changed_cmd = true;
+
+		if (!ph->hops->protocol_msg_check(ph,
+						  CLOCK_RATE_CHANGE_REQUESTED_NOTIFY,
+						  NULL))
+			ci->notify_rate_change_requested_cmd = true;
+	}
+
 	return ret;
 }
 
@@ -284,14 +315,44 @@ static int scmi_clock_possible_parents(const struct scmi_protocol_handle *ph, u3
 	return ret;
 }
 
+static int
+scmi_clock_get_permissions(const struct scmi_protocol_handle *ph, u32 clk_id,
+			   struct scmi_clock_info *clk)
+{
+	struct scmi_xfer *t;
+	u32 perm;
+	int ret;
+
+	ret = ph->xops->xfer_get_init(ph, CLOCK_GET_PERMISSIONS,
+				      sizeof(clk_id), sizeof(perm), &t);
+	if (ret)
+		return ret;
+
+	put_unaligned_le32(clk_id, t->tx.buf);
+
+	ret = ph->xops->do_xfer(ph, t);
+	if (!ret) {
+		perm = get_unaligned_le32(t->rx.buf);
+
+		clk->state_ctrl_forbidden = !(perm & CLOCK_STATE_CONTROL_ALLOWED);
+		clk->rate_ctrl_forbidden = !(perm & CLOCK_RATE_CONTROL_ALLOWED);
+		clk->parent_ctrl_forbidden = !(perm & CLOCK_PARENT_CONTROL_ALLOWED);
+	}
+
+	ph->xops->xfer_put(ph, t);
+
+	return ret;
+}
+
 static int scmi_clock_attributes_get(const struct scmi_protocol_handle *ph,
-				     u32 clk_id, struct scmi_clock_info *clk,
+				     u32 clk_id, struct clock_info *cinfo,
 				     u32 version)
 {
 	int ret;
 	u32 attributes;
 	struct scmi_xfer *t;
 	struct scmi_msg_resp_clock_attributes *attr;
+	struct scmi_clock_info *clk = cinfo->clk + clk_id;
 
 	ret = ph->xops->xfer_get_init(ph, CLOCK_ATTRIBUTES,
 				      sizeof(clk_id), sizeof(*attr), &t);
@@ -324,12 +385,20 @@ static int scmi_clock_attributes_get(const struct scmi_protocol_handle *ph,
 						    NULL, clk->name,
 						    SCMI_MAX_STR_SIZE);
 
-		if (SUPPORTS_RATE_CHANGED_NOTIF(attributes))
+		if (cinfo->notify_rate_changed_cmd &&
+		    SUPPORTS_RATE_CHANGED_NOTIF(attributes))
 			clk->rate_changed_notifications = true;
-		if (SUPPORTS_RATE_CHANGE_REQUESTED_NOTIF(attributes))
+		if (cinfo->notify_rate_change_requested_cmd &&
+		    SUPPORTS_RATE_CHANGE_REQUESTED_NOTIF(attributes))
 			clk->rate_change_requested_notifications = true;
-		if (SUPPORTS_PARENT_CLOCK(attributes))
-			scmi_clock_possible_parents(ph, clk_id, clk);
+		if (PROTOCOL_REV_MAJOR(version) >= 0x3) {
+			if (SUPPORTS_PARENT_CLOCK(attributes))
+				scmi_clock_possible_parents(ph, clk_id, clk);
+			if (SUPPORTS_GET_PERMISSIONS(attributes))
+				scmi_clock_get_permissions(ph, clk_id, clk);
+			if (SUPPORTS_EXTENDED_CONFIG(attributes))
+				clk->extended_config = true;
+		}
 	}
 
 	return ret;
@@ -502,6 +571,14 @@ static int scmi_clock_rate_set(const struct scmi_protocol_handle *ph,
 	struct scmi_xfer *t;
 	struct scmi_clock_set_rate *cfg;
 	struct clock_info *ci = ph->get_priv(ph);
+	struct scmi_clock_info *clk;
+
+	clk = scmi_clock_domain_lookup(ci, clk_id);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	if (clk->rate_ctrl_forbidden)
+		return -EACCES;
 
 	ret = ph->xops->xfer_get_init(ph, CLOCK_RATE_SET, sizeof(*cfg), 0, &t);
 	if (ret)
@@ -543,7 +620,8 @@ static int scmi_clock_rate_set(const struct scmi_protocol_handle *ph,
 
 static int
 scmi_clock_config_set(const struct scmi_protocol_handle *ph, u32 clk_id,
-		      enum clk_state state, u8 __unused0, u32 __unused1,
+		      enum clk_state state,
+		      enum scmi_clock_oem_config __unused0, u32 __unused1,
 		      bool atomic)
 {
 	int ret;
@@ -580,14 +658,16 @@ scmi_clock_set_parent(const struct scmi_protocol_handle *ph, u32 clk_id,
 	struct clock_info *ci = ph->get_priv(ph);
 	struct scmi_clock_info *clk;
 
-	if (clk_id >= ci->num_clocks)
-		return -EINVAL;
-
-	clk = ci->clk + clk_id;
+	clk = scmi_clock_domain_lookup(ci, clk_id);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
 
 	if (parent_id >= clk->num_parents)
 		return -EINVAL;
 
+	if (clk->parent_ctrl_forbidden)
+		return -EACCES;
+
 	ret = ph->xops->xfer_get_init(ph, CLOCK_PARENT_SET,
 				      sizeof(*cfg), 0, &t);
 	if (ret)
@@ -628,10 +708,11 @@ scmi_clock_get_parent(const struct scmi_protocol_handle *ph, u32 clk_id,
 	return ret;
 }
 
-/* For SCMI clock v2.1 and onwards */
+/* For SCMI clock v3.0 and onwards */
 static int
 scmi_clock_config_set_v2(const struct scmi_protocol_handle *ph, u32 clk_id,
-			 enum clk_state state, u8 oem_type, u32 oem_val,
+			 enum clk_state state,
+			 enum scmi_clock_oem_config oem_type, u32 oem_val,
 			 bool atomic)
 {
 	int ret;
@@ -671,6 +752,14 @@ static int scmi_clock_enable(const struct scmi_protocol_handle *ph, u32 clk_id,
 			     bool atomic)
 {
 	struct clock_info *ci = ph->get_priv(ph);
+	struct scmi_clock_info *clk;
+
+	clk = scmi_clock_domain_lookup(ci, clk_id);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	if (clk->state_ctrl_forbidden)
+		return -EACCES;
 
 	return ci->clock_config_set(ph, clk_id, CLK_STATE_ENABLE,
 				    NULL_OEM_TYPE, 0, atomic);
@@ -680,16 +769,24 @@ static int scmi_clock_disable(const struct scmi_protocol_handle *ph, u32 clk_id,
 			      bool atomic)
 {
 	struct clock_info *ci = ph->get_priv(ph);
+	struct scmi_clock_info *clk;
+
+	clk = scmi_clock_domain_lookup(ci, clk_id);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	if (clk->state_ctrl_forbidden)
+		return -EACCES;
 
 	return ci->clock_config_set(ph, clk_id, CLK_STATE_DISABLE,
 				    NULL_OEM_TYPE, 0, atomic);
 }
 
-/* For SCMI clock v2.1 and onwards */
+/* For SCMI clock v3.0 and onwards */
 static int
 scmi_clock_config_get_v2(const struct scmi_protocol_handle *ph, u32 clk_id,
-			 u8 oem_type, u32 *attributes, bool *enabled,
-			 u32 *oem_val, bool atomic)
+			 enum scmi_clock_oem_config oem_type, u32 *attributes,
+			 bool *enabled, u32 *oem_val, bool atomic)
 {
 	int ret;
 	u32 flags;
@@ -730,8 +827,8 @@ scmi_clock_config_get_v2(const struct scmi_protocol_handle *ph, u32 clk_id,
 
 static int
 scmi_clock_config_get(const struct scmi_protocol_handle *ph, u32 clk_id,
-		      u8 oem_type, u32 *attributes, bool *enabled,
-		      u32 *oem_val, bool atomic)
+		      enum scmi_clock_oem_config oem_type, u32 *attributes,
+		      bool *enabled, u32 *oem_val, bool atomic)
 {
 	int ret;
 	struct scmi_xfer *t;
@@ -768,20 +865,38 @@ static int scmi_clock_state_get(const struct scmi_protocol_handle *ph,
 }
 
 static int scmi_clock_config_oem_set(const struct scmi_protocol_handle *ph,
-				     u32 clk_id, u8 oem_type, u32 oem_val,
-				     bool atomic)
+				     u32 clk_id,
+				     enum scmi_clock_oem_config oem_type,
+				     u32 oem_val, bool atomic)
 {
 	struct clock_info *ci = ph->get_priv(ph);
+	struct scmi_clock_info *clk;
+
+	clk = scmi_clock_domain_lookup(ci, clk_id);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	if (!clk->extended_config)
+		return -EOPNOTSUPP;
 
 	return ci->clock_config_set(ph, clk_id, CLK_STATE_UNCHANGED,
 				    oem_type, oem_val, atomic);
 }
 
 static int scmi_clock_config_oem_get(const struct scmi_protocol_handle *ph,
-				     u32 clk_id, u8 oem_type, u32 *oem_val,
-				     u32 *attributes, bool atomic)
+				     u32 clk_id,
+				     enum scmi_clock_oem_config oem_type,
+				     u32 *oem_val, u32 *attributes, bool atomic)
 {
 	struct clock_info *ci = ph->get_priv(ph);
+	struct scmi_clock_info *clk;
+
+	clk = scmi_clock_domain_lookup(ci, clk_id);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	if (!clk->extended_config)
+		return -EOPNOTSUPP;
 
 	return ci->clock_config_get(ph, clk_id, oem_type, attributes,
 				    NULL, oem_val, atomic);
@@ -800,10 +915,10 @@ scmi_clock_info_get(const struct scmi_protocol_handle *ph, u32 clk_id)
 	struct scmi_clock_info *clk;
 	struct clock_info *ci = ph->get_priv(ph);
 
-	if (clk_id >= ci->num_clocks)
+	clk = scmi_clock_domain_lookup(ci, clk_id);
+	if (IS_ERR(clk))
 		return NULL;
 
-	clk = ci->clk + clk_id;
 	if (!clk->name[0])
 		return NULL;
 
@@ -824,6 +939,28 @@ static const struct scmi_clk_proto_ops clk_proto_ops = {
 	.parent_get = scmi_clock_get_parent,
 };
 
+static bool scmi_clk_notify_supported(const struct scmi_protocol_handle *ph,
+				      u8 evt_id, u32 src_id)
+{
+	bool supported;
+	struct scmi_clock_info *clk;
+	struct clock_info *ci = ph->get_priv(ph);
+
+	if (evt_id >= ARRAY_SIZE(evt_2_cmd))
+		return false;
+
+	clk = scmi_clock_domain_lookup(ci, src_id);
+	if (IS_ERR(clk))
+		return false;
+
+	if (evt_id == SCMI_EVENT_CLOCK_RATE_CHANGED)
+		supported = clk->rate_changed_notifications;
+	else
+		supported = clk->rate_change_requested_notifications;
+
+	return supported;
+}
+
 static int scmi_clk_rate_notify(const struct scmi_protocol_handle *ph,
 				u32 clk_id, int message_id, bool enable)
 {
@@ -908,6 +1045,7 @@ static const struct scmi_event clk_events[] = {
 };
 
 static const struct scmi_event_ops clk_event_ops = {
+	.is_notify_supported = scmi_clk_notify_supported,
 	.get_num_sources = scmi_clk_get_num_sources,
 	.set_notify_enabled = scmi_clk_set_notify_enabled,
 	.fill_custom_report = scmi_clk_fill_custom_report,
@@ -949,7 +1087,7 @@ static int scmi_clock_protocol_init(const struct scmi_protocol_handle *ph)
 	for (clkid = 0; clkid < cinfo->num_clocks; clkid++) {
 		struct scmi_clock_info *clk = cinfo->clk + clkid;
 
-		ret = scmi_clock_attributes_get(ph, clkid, clk, version);
+		ret = scmi_clock_attributes_get(ph, clkid, cinfo, version);
 		if (!ret)
 			scmi_clock_describe_rates_get(ph, clkid, clk);
 	}
diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h
index 00b165d1f5..6affbfdd1d 100644
--- a/drivers/firmware/arm_scmi/common.h
+++ b/drivers/firmware/arm_scmi/common.h
@@ -141,7 +141,7 @@ scmi_revision_area_get(const struct scmi_protocol_handle *ph);
 void scmi_setup_protocol_implemented(const struct scmi_protocol_handle *ph,
 				     u8 *prot_imp);
 
-extern struct bus_type scmi_bus_type;
+extern const struct bus_type scmi_bus_type;
 
 #define SCMI_BUS_NOTIFY_DEVICE_REQUEST		0
 #define SCMI_BUS_NOTIFY_DEVICE_UNREQUEST	1
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 3ea64b22cf..2709598f30 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -86,6 +86,12 @@ struct scmi_xfers_info {
  * @users: A refcount to track effective users of this protocol.
  * @priv: Reference for optional protocol private data.
  * @version: Protocol version supported by the platform as detected at runtime.
+ * @negotiated_version: When the platform supports a newer protocol version,
+ *			the agent will try to negotiate with the platform the
+ *			usage of the newest version known to it, since
+ *			backward compatibility is NOT automatically assured.
+ *			This field is NON-zero when a successful negotiation
+ *			has completed.
  * @ph: An embedded protocol handle that will be passed down to protocol
  *	initialization code to identify this instance.
  *
@@ -99,6 +105,7 @@ struct scmi_protocol_instance {
 	refcount_t			users;
 	void				*priv;
 	unsigned int			version;
+	unsigned int			negotiated_version;
 	struct scmi_protocol_handle	ph;
 };
 
@@ -1617,7 +1624,7 @@ static void
 scmi_common_fastchannel_init(const struct scmi_protocol_handle *ph,
 			     u8 describe_id, u32 message_id, u32 valid_size,
 			     u32 domain, void __iomem **p_addr,
-			     struct scmi_fc_db_info **p_db)
+			     struct scmi_fc_db_info **p_db, u32 *rate_limit)
 {
 	int ret;
 	u32 flags;
@@ -1661,6 +1668,9 @@ scmi_common_fastchannel_init(const struct scmi_protocol_handle *ph,
 		goto err_xfer;
 	}
 
+	if (rate_limit)
+		*rate_limit = le32_to_cpu(resp->rate_limit) & GENMASK(19, 0);
+
 	phys_addr = le32_to_cpu(resp->chan_addr_low);
 	phys_addr |= (u64)le32_to_cpu(resp->chan_addr_high) << 32;
 	addr = devm_ioremap(ph->dev, phys_addr, size);
@@ -1754,10 +1764,44 @@ static void scmi_common_fastchannel_db_ring(struct scmi_fc_db_info *db)
 #endif
 }
 
+/**
+ * scmi_protocol_msg_check  - Check protocol message attributes
+ *
+ * @ph: A reference to the protocol handle.
+ * @message_id: The ID of the message to check.
+ * @attributes: A parameter to optionally return the retrieved message
+ *		attributes, in case of Success.
+ *
+ * An helper to check protocol message attributes for a specific protocol
+ * and message pair.
+ *
+ * Return: 0 on SUCCESS
+ */
+static int scmi_protocol_msg_check(const struct scmi_protocol_handle *ph,
+				   u32 message_id, u32 *attributes)
+{
+	int ret;
+	struct scmi_xfer *t;
+
+	ret = xfer_get_init(ph, PROTOCOL_MESSAGE_ATTRIBUTES,
+			    sizeof(__le32), 0, &t);
+	if (ret)
+		return ret;
+
+	put_unaligned_le32(message_id, t->tx.buf);
+	ret = do_xfer(ph, t);
+	if (!ret && attributes)
+		*attributes = get_unaligned_le32(t->rx.buf);
+	xfer_put(ph, t);
+
+	return ret;
+}
+
 static const struct scmi_proto_helpers_ops helpers_ops = {
 	.extended_name_get = scmi_common_extended_name_get,
 	.iter_response_init = scmi_iterator_init,
 	.iter_response_run = scmi_iterator_run,
+	.protocol_msg_check = scmi_protocol_msg_check,
 	.fastchannel_init = scmi_common_fastchannel_init,
 	.fastchannel_db_ring = scmi_common_fastchannel_db_ring,
 };
@@ -1782,6 +1826,44 @@ scmi_revision_area_get(const struct scmi_protocol_handle *ph)
 }
 
 /**
+ * scmi_protocol_version_negotiate  - Negotiate protocol version
+ *
+ * @ph: A reference to the protocol handle.
+ *
+ * An helper to negotiate a protocol version different from the latest
+ * advertised as supported from the platform: on Success backward
+ * compatibility is assured by the platform.
+ *
+ * Return: 0 on Success
+ */
+static int scmi_protocol_version_negotiate(struct scmi_protocol_handle *ph)
+{
+	int ret;
+	struct scmi_xfer *t;
+	struct scmi_protocol_instance *pi = ph_to_pi(ph);
+
+	/* At first check if NEGOTIATE_PROTOCOL_VERSION is supported ... */
+	ret = scmi_protocol_msg_check(ph, NEGOTIATE_PROTOCOL_VERSION, NULL);
+	if (ret)
+		return ret;
+
+	/* ... then attempt protocol version negotiation */
+	ret = xfer_get_init(ph, NEGOTIATE_PROTOCOL_VERSION,
+			    sizeof(__le32), 0, &t);
+	if (ret)
+		return ret;
+
+	put_unaligned_le32(pi->proto->supported_version, t->tx.buf);
+	ret = do_xfer(ph, t);
+	if (!ret)
+		pi->negotiated_version = pi->proto->supported_version;
+
+	xfer_put(ph, t);
+
+	return ret;
+}
+
+/**
  * scmi_alloc_init_protocol_instance  - Allocate and initialize a protocol
  * instance descriptor.
  * @info: The reference to the related SCMI instance.
@@ -1853,11 +1935,21 @@ scmi_alloc_init_protocol_instance(struct scmi_info *info,
 	devres_close_group(handle->dev, pi->gid);
 	dev_dbg(handle->dev, "Initialized protocol: 0x%X\n", pi->proto->id);
 
-	if (pi->version > proto->supported_version)
-		dev_warn(handle->dev,
-			 "Detected UNSUPPORTED higher version 0x%X for protocol 0x%X."
-			 "Backward compatibility is NOT assured.\n",
-			 pi->version, pi->proto->id);
+	if (pi->version > proto->supported_version) {
+		ret = scmi_protocol_version_negotiate(&pi->ph);
+		if (!ret) {
+			dev_info(handle->dev,
+				 "Protocol 0x%X successfully negotiated version 0x%X\n",
+				 proto->id, pi->negotiated_version);
+		} else {
+			dev_warn(handle->dev,
+				 "Detected UNSUPPORTED higher version 0x%X for protocol 0x%X.\n",
+				 pi->version, pi->proto->id);
+			dev_warn(handle->dev,
+				 "Trying version 0x%X. Backward compatibility is NOT assured.\n",
+				 pi->proto->supported_version);
+		}
+	}
 
 	return pi;
 
diff --git a/drivers/firmware/arm_scmi/notify.c b/drivers/firmware/arm_scmi/notify.c
index 0efd20cd9d..27c5253119 100644
--- a/drivers/firmware/arm_scmi/notify.c
+++ b/drivers/firmware/arm_scmi/notify.c
@@ -99,6 +99,7 @@
 #define PROTO_ID_MASK		GENMASK(31, 24)
 #define EVT_ID_MASK		GENMASK(23, 16)
 #define SRC_ID_MASK		GENMASK(15, 0)
+#define NOTIF_UNSUPP		-1
 
 /*
  * Builds an unsigned 32bit key from the given input tuple to be used
@@ -788,6 +789,7 @@ int scmi_register_protocol_events(const struct scmi_handle *handle, u8 proto_id,
 
 	pd->ph = ph;
 	for (i = 0; i < ee->num_events; i++, evt++) {
+		int id;
 		struct scmi_registered_event *r_evt;
 
 		r_evt = devm_kzalloc(ni->handle->dev, sizeof(*r_evt),
@@ -809,6 +811,11 @@ int scmi_register_protocol_events(const struct scmi_handle *handle, u8 proto_id,
 		if (!r_evt->report)
 			return -ENOMEM;
 
+		for (id = 0; id < r_evt->num_sources; id++)
+			if (ee->ops->is_notify_supported &&
+			    !ee->ops->is_notify_supported(ph, r_evt->evt->id, id))
+				refcount_set(&r_evt->sources[id], NOTIF_UNSUPP);
+
 		pd->registered_events[i] = r_evt;
 		/* Ensure events are updated */
 		smp_wmb();
@@ -1166,7 +1173,13 @@ static inline int __scmi_enable_evt(struct scmi_registered_event *r_evt,
 			int ret = 0;
 
 			sid = &r_evt->sources[src_id];
-			if (refcount_read(sid) == 0) {
+			if (refcount_read(sid) == NOTIF_UNSUPP) {
+				dev_dbg(r_evt->proto->ph->dev,
+					"Notification NOT supported - proto_id:%d  evt_id:%d  src_id:%d",
+					r_evt->proto->id, r_evt->evt->id,
+					src_id);
+				ret = -EOPNOTSUPP;
+			} else if (refcount_read(sid) == 0) {
 				ret = REVT_NOTIFY_ENABLE(r_evt, r_evt->evt->id,
 							 src_id);
 				if (!ret)
@@ -1179,6 +1192,8 @@ static inline int __scmi_enable_evt(struct scmi_registered_event *r_evt,
 	} else {
 		for (; num_sources; src_id++, num_sources--) {
 			sid = &r_evt->sources[src_id];
+			if (refcount_read(sid) == NOTIF_UNSUPP)
+				continue;
 			if (refcount_dec_and_test(sid))
 				REVT_NOTIFY_DISABLE(r_evt,
 						    r_evt->evt->id, src_id);
diff --git a/drivers/firmware/arm_scmi/notify.h b/drivers/firmware/arm_scmi/notify.h
index 4e9b627edf..76758a736c 100644
--- a/drivers/firmware/arm_scmi/notify.h
+++ b/drivers/firmware/arm_scmi/notify.h
@@ -35,6 +35,8 @@ struct scmi_protocol_handle;
 
 /**
  * struct scmi_event_ops  - Protocol helpers called by the notification core.
+ * @is_notify_supported: Return 0 if the specified notification for the
+ *			 specified resource (src_id) is supported.
  * @get_num_sources: Returns the number of possible events' sources for this
  *		     protocol
  * @set_notify_enabled: Enable/disable the required evt_id/src_id notifications
@@ -50,6 +52,8 @@ struct scmi_protocol_handle;
  *	    process context.
  */
 struct scmi_event_ops {
+	bool (*is_notify_supported)(const struct scmi_protocol_handle *ph,
+				    u8 evt_id, u32 src_id);
 	int (*get_num_sources)(const struct scmi_protocol_handle *ph);
 	int (*set_notify_enabled)(const struct scmi_protocol_handle *ph,
 				  u8 evt_id, u32 src_id, bool enabled);
diff --git a/drivers/firmware/arm_scmi/optee.c b/drivers/firmware/arm_scmi/optee.c
index 25bfb46548..4e7944b91e 100644
--- a/drivers/firmware/arm_scmi/optee.c
+++ b/drivers/firmware/arm_scmi/optee.c
@@ -109,8 +109,10 @@ enum scmi_optee_pta_cmd {
  * @rx_len: Response size
  * @mu: Mutex protection on channel access
  * @cinfo: SCMI channel information
- * @shmem: Virtual base address of the shared memory
- * @req: Shared memory protocol handle for SCMI request and synchronous response
+ * @req: union for SCMI interface
+ * @req.shmem: Virtual base address of the shared memory
+ * @req.msg: Shared memory protocol handle for SCMI request and
+ *   synchronous response
  * @tee_shm: TEE shared memory handle @req or NULL if using IOMEM shmem
  * @link: Reference in agent's channel list
  */
diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index 211e8e0aef..345fff167b 100644
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/drivers/firmware/arm_scmi/perf.c
@@ -153,6 +153,7 @@ struct perf_dom_info {
 	bool perf_fastchannels;
 	bool level_indexing_mode;
 	u32 opp_count;
+	u32 rate_limit_us;
 	u32 sustained_freq_khz;
 	u32 sustained_perf_level;
 	unsigned long mult_factor;
@@ -182,6 +183,8 @@ struct scmi_perf_info {
 	enum scmi_power_scale power_scale;
 	u64 stats_addr;
 	u32 stats_size;
+	bool notify_lvl_cmd;
+	bool notify_lim_cmd;
 	struct perf_dom_info *dom_info;
 };
 
@@ -222,6 +225,15 @@ static int scmi_perf_attributes_get(const struct scmi_protocol_handle *ph,
 	}
 
 	ph->xops->xfer_put(ph, t);
+
+	if (!ret) {
+		if (!ph->hops->protocol_msg_check(ph, PERF_NOTIFY_LEVEL, NULL))
+			pi->notify_lvl_cmd = true;
+
+		if (!ph->hops->protocol_msg_check(ph, PERF_NOTIFY_LIMITS, NULL))
+			pi->notify_lim_cmd = true;
+	}
+
 	return ret;
 }
 
@@ -239,6 +251,7 @@ static void scmi_perf_xa_destroy(void *data)
 static int
 scmi_perf_domain_attributes_get(const struct scmi_protocol_handle *ph,
 				struct perf_dom_info *dom_info,
+				bool notify_lim_cmd, bool notify_lvl_cmd,
 				u32 version)
 {
 	int ret;
@@ -260,25 +273,46 @@ scmi_perf_domain_attributes_get(const struct scmi_protocol_handle *ph,
 
 		dom_info->set_limits = SUPPORTS_SET_LIMITS(flags);
 		dom_info->info.set_perf = SUPPORTS_SET_PERF_LVL(flags);
-		dom_info->perf_limit_notify = SUPPORTS_PERF_LIMIT_NOTIFY(flags);
-		dom_info->perf_level_notify = SUPPORTS_PERF_LEVEL_NOTIFY(flags);
+		if (notify_lim_cmd)
+			dom_info->perf_limit_notify =
+				SUPPORTS_PERF_LIMIT_NOTIFY(flags);
+		if (notify_lvl_cmd)
+			dom_info->perf_level_notify =
+				SUPPORTS_PERF_LEVEL_NOTIFY(flags);
 		dom_info->perf_fastchannels = SUPPORTS_PERF_FASTCHANNELS(flags);
 		if (PROTOCOL_REV_MAJOR(version) >= 0x4)
 			dom_info->level_indexing_mode =
 				SUPPORTS_LEVEL_INDEXING(flags);
+		dom_info->rate_limit_us = le32_to_cpu(attr->rate_limit_us) &
+						GENMASK(19, 0);
 		dom_info->sustained_freq_khz =
 					le32_to_cpu(attr->sustained_freq_khz);
 		dom_info->sustained_perf_level =
 					le32_to_cpu(attr->sustained_perf_level);
+		/*
+		 * sustained_freq_khz = mult_factor * sustained_perf_level
+		 * mult_factor must be non zero positive integer(not fraction)
+		 */
 		if (!dom_info->sustained_freq_khz ||
 		    !dom_info->sustained_perf_level ||
-		    dom_info->level_indexing_mode)
+		    dom_info->level_indexing_mode) {
 			/* CPUFreq converts to kHz, hence default 1000 */
 			dom_info->mult_factor =	1000;
-		else
+		} else {
 			dom_info->mult_factor =
 					(dom_info->sustained_freq_khz * 1000UL)
 					/ dom_info->sustained_perf_level;
+			if ((dom_info->sustained_freq_khz * 1000UL) %
+			    dom_info->sustained_perf_level)
+				dev_warn(ph->dev,
+					 "multiplier for domain %d rounded\n",
+					 dom_info->id);
+		}
+		if (!dom_info->mult_factor)
+			dev_warn(ph->dev,
+			         "Wrong sustained perf/frequency(domain %d)\n",
+				 dom_info->id);
+
 		strscpy(dom_info->info.name, attr->name,
 			SCMI_SHORT_NAME_MAX_SIZE);
 	}
@@ -295,9 +329,9 @@ scmi_perf_domain_attributes_get(const struct scmi_protocol_handle *ph,
 					    dom_info->id, NULL, dom_info->info.name,
 					    SCMI_MAX_STR_SIZE);
 
+	xa_init(&dom_info->opps_by_lvl);
 	if (dom_info->level_indexing_mode) {
 		xa_init(&dom_info->opps_by_idx);
-		xa_init(&dom_info->opps_by_lvl);
 		hash_init(dom_info->opps_by_freq);
 	}
 
@@ -340,13 +374,21 @@ static int iter_perf_levels_update_state(struct scmi_iterator_state *st,
 }
 
 static inline void
-process_response_opp(struct scmi_opp *opp, unsigned int loop_idx,
+process_response_opp(struct device *dev, struct perf_dom_info *dom,
+		     struct scmi_opp *opp, unsigned int loop_idx,
 		     const struct scmi_msg_resp_perf_describe_levels *r)
 {
+	int ret;
+
 	opp->perf = le32_to_cpu(r->opp[loop_idx].perf_val);
 	opp->power = le32_to_cpu(r->opp[loop_idx].power);
 	opp->trans_latency_us =
 		le16_to_cpu(r->opp[loop_idx].transition_latency_us);
+
+	ret = xa_insert(&dom->opps_by_lvl, opp->perf, opp, GFP_KERNEL);
+	if (ret)
+		dev_warn(dev, "Failed to add opps_by_lvl at %d - ret:%d\n",
+			 opp->perf, ret);
 }
 
 static inline void
@@ -354,16 +396,21 @@ process_response_opp_v4(struct device *dev, struct perf_dom_info *dom,
 			struct scmi_opp *opp, unsigned int loop_idx,
 			const struct scmi_msg_resp_perf_describe_levels_v4 *r)
 {
+	int ret;
+
 	opp->perf = le32_to_cpu(r->opp[loop_idx].perf_val);
 	opp->power = le32_to_cpu(r->opp[loop_idx].power);
 	opp->trans_latency_us =
 		le16_to_cpu(r->opp[loop_idx].transition_latency_us);
 
+	ret = xa_insert(&dom->opps_by_lvl, opp->perf, opp, GFP_KERNEL);
+	if (ret)
+		dev_warn(dev, "Failed to add opps_by_lvl at %d - ret:%d\n",
+			 opp->perf, ret);
+
 	/* Note that PERF v4 reports always five 32-bit words */
 	opp->indicative_freq = le32_to_cpu(r->opp[loop_idx].indicative_freq);
 	if (dom->level_indexing_mode) {
-		int ret;
-
 		opp->level_index = le32_to_cpu(r->opp[loop_idx].level_index);
 
 		ret = xa_insert(&dom->opps_by_idx, opp->level_index, opp,
@@ -373,12 +420,6 @@ process_response_opp_v4(struct device *dev, struct perf_dom_info *dom,
 				 "Failed to add opps_by_idx at %d - ret:%d\n",
 				 opp->level_index, ret);
 
-		ret = xa_insert(&dom->opps_by_lvl, opp->perf, opp, GFP_KERNEL);
-		if (ret)
-			dev_warn(dev,
-				 "Failed to add opps_by_lvl at %d - ret:%d\n",
-				 opp->perf, ret);
-
 		hash_add(dom->opps_by_freq, &opp->hash, opp->indicative_freq);
 	}
 }
@@ -393,7 +434,8 @@ iter_perf_levels_process_response(const struct scmi_protocol_handle *ph,
 
 	opp = &p->perf_dom->opp[st->desc_index + st->loop_idx];
 	if (PROTOCOL_REV_MAJOR(p->version) <= 0x3)
-		process_response_opp(opp, st->loop_idx, response);
+		process_response_opp(ph->dev, p->perf_dom, opp, st->loop_idx,
+				     response);
 	else
 		process_response_opp_v4(ph->dev, p->perf_dom, opp, st->loop_idx,
 					response);
@@ -786,23 +828,27 @@ static void scmi_perf_domain_init_fc(const struct scmi_protocol_handle *ph,
 
 	ph->hops->fastchannel_init(ph, PERF_DESCRIBE_FASTCHANNEL,
 				   PERF_LEVEL_GET, 4, dom->id,
-				   &fc[PERF_FC_LEVEL].get_addr, NULL);
+				   &fc[PERF_FC_LEVEL].get_addr, NULL,
+				   &fc[PERF_FC_LEVEL].rate_limit);
 
 	ph->hops->fastchannel_init(ph, PERF_DESCRIBE_FASTCHANNEL,
 				   PERF_LIMITS_GET, 8, dom->id,
-				   &fc[PERF_FC_LIMIT].get_addr, NULL);
+				   &fc[PERF_FC_LIMIT].get_addr, NULL,
+				   &fc[PERF_FC_LIMIT].rate_limit);
 
 	if (dom->info.set_perf)
 		ph->hops->fastchannel_init(ph, PERF_DESCRIBE_FASTCHANNEL,
 					   PERF_LEVEL_SET, 4, dom->id,
 					   &fc[PERF_FC_LEVEL].set_addr,
-					   &fc[PERF_FC_LEVEL].set_db);
+					   &fc[PERF_FC_LEVEL].set_db,
+					   &fc[PERF_FC_LEVEL].rate_limit);
 
 	if (dom->set_limits)
 		ph->hops->fastchannel_init(ph, PERF_DESCRIBE_FASTCHANNEL,
 					   PERF_LIMITS_SET, 8, dom->id,
 					   &fc[PERF_FC_LIMIT].set_addr,
-					   &fc[PERF_FC_LIMIT].set_db);
+					   &fc[PERF_FC_LIMIT].set_db,
+					   &fc[PERF_FC_LIMIT].rate_limit);
 
 	dom->fc_info = fc;
 }
@@ -825,6 +871,9 @@ static int scmi_dvfs_device_opps_add(const struct scmi_protocol_handle *ph,
 		else
 			freq = dom->opp[idx].indicative_freq * dom->mult_factor;
 
+		/* All OPPs above the sustained frequency are treated as turbo */
+		data.turbo = freq > dom->sustained_freq_khz * 1000;
+
 		data.level = dom->opp[idx].perf;
 		data.freq = freq;
 
@@ -855,6 +904,23 @@ scmi_dvfs_transition_latency_get(const struct scmi_protocol_handle *ph,
 	return dom->opp[dom->opp_count - 1].trans_latency_us * 1000;
 }
 
+static int
+scmi_dvfs_rate_limit_get(const struct scmi_protocol_handle *ph,
+			 u32 domain, u32 *rate_limit)
+{
+	struct perf_dom_info *dom;
+
+	if (!rate_limit)
+		return -EINVAL;
+
+	dom = scmi_perf_domain_lookup(ph, domain);
+	if (IS_ERR(dom))
+		return PTR_ERR(dom);
+
+	*rate_limit = dom->rate_limit_us;
+	return 0;
+}
+
 static int scmi_dvfs_freq_set(const struct scmi_protocol_handle *ph, u32 domain,
 			      unsigned long freq, bool poll)
 {
@@ -954,6 +1020,25 @@ static bool scmi_fast_switch_possible(const struct scmi_protocol_handle *ph,
 	return dom->fc_info && dom->fc_info[PERF_FC_LEVEL].set_addr;
 }
 
+static int scmi_fast_switch_rate_limit(const struct scmi_protocol_handle *ph,
+				       u32 domain, u32 *rate_limit)
+{
+	struct perf_dom_info *dom;
+
+	if (!rate_limit)
+		return -EINVAL;
+
+	dom = scmi_perf_domain_lookup(ph, domain);
+	if (IS_ERR(dom))
+		return PTR_ERR(dom);
+
+	if (!dom->fc_info)
+		return -EINVAL;
+
+	*rate_limit = dom->fc_info[PERF_FC_LEVEL].rate_limit;
+	return 0;
+}
+
 static enum scmi_power_scale
 scmi_power_scale_get(const struct scmi_protocol_handle *ph)
 {
@@ -970,14 +1055,37 @@ static const struct scmi_perf_proto_ops perf_proto_ops = {
 	.level_set = scmi_perf_level_set,
 	.level_get = scmi_perf_level_get,
 	.transition_latency_get = scmi_dvfs_transition_latency_get,
+	.rate_limit_get = scmi_dvfs_rate_limit_get,
 	.device_opps_add = scmi_dvfs_device_opps_add,
 	.freq_set = scmi_dvfs_freq_set,
 	.freq_get = scmi_dvfs_freq_get,
 	.est_power_get = scmi_dvfs_est_power_get,
 	.fast_switch_possible = scmi_fast_switch_possible,
+	.fast_switch_rate_limit = scmi_fast_switch_rate_limit,
 	.power_scale_get = scmi_power_scale_get,
 };
 
+static bool scmi_perf_notify_supported(const struct scmi_protocol_handle *ph,
+				       u8 evt_id, u32 src_id)
+{
+	bool supported;
+	struct perf_dom_info *dom;
+
+	if (evt_id >= ARRAY_SIZE(evt_2_cmd))
+		return false;
+
+	dom = scmi_perf_domain_lookup(ph, src_id);
+	if (IS_ERR(dom))
+		return false;
+
+	if (evt_id == SCMI_EVENT_PERFORMANCE_LIMITS_CHANGED)
+		supported = dom->perf_limit_notify;
+	else
+		supported = dom->perf_level_notify;
+
+	return supported;
+}
+
 static int scmi_perf_set_notify_enabled(const struct scmi_protocol_handle *ph,
 					u8 evt_id, u32 src_id, bool enable)
 {
@@ -995,18 +1103,47 @@ static int scmi_perf_set_notify_enabled(const struct scmi_protocol_handle *ph,
 	return ret;
 }
 
+static int
+scmi_perf_xlate_opp_to_freq(struct perf_dom_info *dom,
+			    unsigned int index, unsigned long *freq)
+{
+	struct scmi_opp *opp;
+
+	if (!dom || !freq)
+		return -EINVAL;
+
+	if (!dom->level_indexing_mode) {
+		opp = xa_load(&dom->opps_by_lvl, index);
+		if (!opp)
+			return -ENODEV;
+
+		*freq = opp->perf * dom->mult_factor;
+	} else {
+		opp = xa_load(&dom->opps_by_idx, index);
+		if (!opp)
+			return -ENODEV;
+
+		*freq = opp->indicative_freq * dom->mult_factor;
+	}
+
+	return 0;
+}
+
 static void *scmi_perf_fill_custom_report(const struct scmi_protocol_handle *ph,
 					  u8 evt_id, ktime_t timestamp,
 					  const void *payld, size_t payld_sz,
 					  void *report, u32 *src_id)
 {
+	int ret;
 	void *rep = NULL;
+	struct perf_dom_info *dom;
 
 	switch (evt_id) {
 	case SCMI_EVENT_PERFORMANCE_LIMITS_CHANGED:
 	{
 		const struct scmi_perf_limits_notify_payld *p = payld;
 		struct scmi_perf_limits_report *r = report;
+		unsigned long freq_min, freq_max;
 
 		if (sizeof(*p) != payld_sz)
 			break;
@@ -1016,14 +1153,36 @@ static void *scmi_perf_fill_custom_report(const struct scmi_protocol_handle *ph,
 		r->domain_id = le32_to_cpu(p->domain_id);
 		r->range_max = le32_to_cpu(p->range_max);
 		r->range_min = le32_to_cpu(p->range_min);
+		/* Check if the reported domain exist at all */
+		dom = scmi_perf_domain_lookup(ph, r->domain_id);
+		if (IS_ERR(dom))
+			break;
+		/*
+		 * Event will be reported from this point on...
+		 * ...even if, later, xlated frequencies were not retrieved.
+		 */
 		*src_id = r->domain_id;
 		rep = r;
+
+		ret = scmi_perf_xlate_opp_to_freq(dom, r->range_max, &freq_max);
+		if (ret)
+			break;
+
+		ret = scmi_perf_xlate_opp_to_freq(dom, r->range_min, &freq_min);
+		if (ret)
+			break;
+
+		/* Report translated freqs ONLY if both available */
+		r->range_max_freq = freq_max;
+		r->range_min_freq = freq_min;
+
 		break;
 	}
 	case SCMI_EVENT_PERFORMANCE_LEVEL_CHANGED:
 	{
 		const struct scmi_perf_level_notify_payld *p = payld;
 		struct scmi_perf_level_report *r = report;
+		unsigned long freq;
 
 		if (sizeof(*p) != payld_sz)
 			break;
@@ -1031,9 +1190,27 @@ static void *scmi_perf_fill_custom_report(const struct scmi_protocol_handle *ph,
 		r->timestamp = timestamp;
 		r->agent_id = le32_to_cpu(p->agent_id);
 		r->domain_id = le32_to_cpu(p->domain_id);
+		/* Report translated freqs ONLY if available */
 		r->performance_level = le32_to_cpu(p->performance_level);
+		/* Check if the reported domain exist at all */
+		dom = scmi_perf_domain_lookup(ph, r->domain_id);
+		if (IS_ERR(dom))
+			break;
+		/*
+		 * Event will be reported from this point on...
+		 * ...even if, later, xlated frequencies were not retrieved.
+		 */
 		*src_id = r->domain_id;
 		rep = r;
+
+		/* Report translated freqs ONLY if available */
+		ret = scmi_perf_xlate_opp_to_freq(dom, r->performance_level,
+						  &freq);
+		if (ret)
+			break;
+
+		r->performance_level_freq = freq;
+
 		break;
 	}
 	default:
@@ -1067,6 +1244,7 @@ static const struct scmi_event perf_events[] = {
 };
 
 static const struct scmi_event_ops perf_event_ops = {
+	.is_notify_supported = scmi_perf_notify_supported,
 	.get_num_sources = scmi_perf_get_num_sources,
 	.set_notify_enabled = scmi_perf_set_notify_enabled,
 	.fill_custom_report = scmi_perf_fill_custom_report,
@@ -1111,7 +1289,8 @@ static int scmi_perf_protocol_init(const struct scmi_protocol_handle *ph)
 		struct perf_dom_info *dom = pinfo->dom_info + domain;
 
 		dom->id = domain;
-		scmi_perf_domain_attributes_get(ph, dom, version);
+		scmi_perf_domain_attributes_get(ph, dom, pinfo->notify_lim_cmd,
+						pinfo->notify_lvl_cmd, version);
 		scmi_perf_describe_levels_get(ph, dom, version);
 
 		if (dom->perf_fastchannels)
diff --git a/drivers/firmware/arm_scmi/power.c b/drivers/firmware/arm_scmi/power.c
index c2e6b9b4d9..49666bd1d8 100644
--- a/drivers/firmware/arm_scmi/power.c
+++ b/drivers/firmware/arm_scmi/power.c
@@ -68,6 +68,7 @@ struct power_dom_info {
 
 struct scmi_power_info {
 	u32 version;
+	bool notify_state_change_cmd;
 	int num_domains;
 	u64 stats_addr;
 	u32 stats_size;
@@ -97,13 +98,18 @@ static int scmi_power_attributes_get(const struct scmi_protocol_handle *ph,
 	}
 
 	ph->xops->xfer_put(ph, t);
+
+	if (!ret)
+		if (!ph->hops->protocol_msg_check(ph, POWER_STATE_NOTIFY, NULL))
+			pi->notify_state_change_cmd = true;
+
 	return ret;
 }
 
 static int
 scmi_power_domain_attributes_get(const struct scmi_protocol_handle *ph,
 				 u32 domain, struct power_dom_info *dom_info,
-				 u32 version)
+				 u32 version, bool notify_state_change_cmd)
 {
 	int ret;
 	u32 flags;
@@ -122,7 +128,9 @@ scmi_power_domain_attributes_get(const struct scmi_protocol_handle *ph,
 	if (!ret) {
 		flags = le32_to_cpu(attr->flags);
 
-		dom_info->state_set_notify = SUPPORTS_STATE_SET_NOTIFY(flags);
+		if (notify_state_change_cmd)
+			dom_info->state_set_notify =
+				SUPPORTS_STATE_SET_NOTIFY(flags);
 		dom_info->state_set_async = SUPPORTS_STATE_SET_ASYNC(flags);
 		dom_info->state_set_sync = SUPPORTS_STATE_SET_SYNC(flags);
 		strscpy(dom_info->name, attr->name, SCMI_SHORT_NAME_MAX_SIZE);
@@ -231,6 +239,20 @@ static int scmi_power_request_notify(const struct scmi_protocol_handle *ph,
 	return ret;
 }
 
+static bool scmi_power_notify_supported(const struct scmi_protocol_handle *ph,
+					u8 evt_id, u32 src_id)
+{
+	struct power_dom_info *dom;
+	struct scmi_power_info *pinfo = ph->get_priv(ph);
+
+	if (evt_id != SCMI_EVENT_POWER_STATE_CHANGED ||
+	    src_id >= pinfo->num_domains)
+		return false;
+
+	dom = pinfo->dom_info + src_id;
+	return dom->state_set_notify;
+}
+
 static int scmi_power_set_notify_enabled(const struct scmi_protocol_handle *ph,
 					 u8 evt_id, u32 src_id, bool enable)
 {
@@ -285,6 +307,7 @@ static const struct scmi_event power_events[] = {
 };
 
 static const struct scmi_event_ops power_event_ops = {
+	.is_notify_supported = scmi_power_notify_supported,
 	.get_num_sources = scmi_power_get_num_sources,
 	.set_notify_enabled = scmi_power_set_notify_enabled,
 	.fill_custom_report = scmi_power_fill_custom_report,
@@ -326,7 +349,8 @@ static int scmi_power_protocol_init(const struct scmi_protocol_handle *ph)
 	for (domain = 0; domain < pinfo->num_domains; domain++) {
 		struct power_dom_info *dom = pinfo->dom_info + domain;
 
-		scmi_power_domain_attributes_get(ph, domain, dom, version);
+		scmi_power_domain_attributes_get(ph, domain, dom, version,
+						 pinfo->notify_state_change_cmd);
 	}
 
 	pinfo->version = version;
diff --git a/drivers/firmware/arm_scmi/powercap.c b/drivers/firmware/arm_scmi/powercap.c
index a4c6cd4716..1fa79bba49 100644
--- a/drivers/firmware/arm_scmi/powercap.c
+++ b/drivers/firmware/arm_scmi/powercap.c
@@ -124,6 +124,8 @@ struct scmi_powercap_state {
 struct powercap_info {
 	u32 version;
 	int num_domains;
+	bool notify_cap_cmd;
+	bool notify_measurements_cmd;
 	struct scmi_powercap_state *states;
 	struct scmi_powercap_info *powercaps;
 };
@@ -157,6 +159,18 @@ scmi_powercap_attributes_get(const struct scmi_protocol_handle *ph,
 	}
 
 	ph->xops->xfer_put(ph, t);
+
+	if (!ret) {
+		if (!ph->hops->protocol_msg_check(ph,
+						  POWERCAP_CAP_NOTIFY, NULL))
+			pi->notify_cap_cmd = true;
+
+		if (!ph->hops->protocol_msg_check(ph,
+						  POWERCAP_MEASUREMENTS_NOTIFY,
+						  NULL))
+			pi->notify_measurements_cmd = true;
+	}
+
 	return ret;
 }
 
@@ -200,10 +214,12 @@ scmi_powercap_domain_attributes_get(const struct scmi_protocol_handle *ph,
 		flags = le32_to_cpu(resp->attributes);
 
 		dom_info->id = domain;
-		dom_info->notify_powercap_cap_change =
-			SUPPORTS_POWERCAP_CAP_CHANGE_NOTIFY(flags);
-		dom_info->notify_powercap_measurement_change =
-			SUPPORTS_POWERCAP_MEASUREMENTS_CHANGE_NOTIFY(flags);
+		if (pinfo->notify_cap_cmd)
+			dom_info->notify_powercap_cap_change =
+				SUPPORTS_POWERCAP_CAP_CHANGE_NOTIFY(flags);
+		if (pinfo->notify_measurements_cmd)
+			dom_info->notify_powercap_measurement_change =
+				SUPPORTS_POWERCAP_MEASUREMENTS_CHANGE_NOTIFY(flags);
 		dom_info->async_powercap_cap_set =
 			SUPPORTS_ASYNC_POWERCAP_CAP_SET(flags);
 		dom_info->powercap_cap_config =
@@ -703,20 +719,24 @@ static void scmi_powercap_domain_init_fc(const struct scmi_protocol_handle *ph,
 	ph->hops->fastchannel_init(ph, POWERCAP_DESCRIBE_FASTCHANNEL,
 				   POWERCAP_CAP_SET, 4, domain,
 				   &fc[POWERCAP_FC_CAP].set_addr,
-				   &fc[POWERCAP_FC_CAP].set_db);
+				   &fc[POWERCAP_FC_CAP].set_db,
+				   &fc[POWERCAP_FC_CAP].rate_limit);
 
 	ph->hops->fastchannel_init(ph, POWERCAP_DESCRIBE_FASTCHANNEL,
 				   POWERCAP_CAP_GET, 4, domain,
-				   &fc[POWERCAP_FC_CAP].get_addr, NULL);
+				   &fc[POWERCAP_FC_CAP].get_addr, NULL,
+				   &fc[POWERCAP_FC_CAP].rate_limit);
 
 	ph->hops->fastchannel_init(ph, POWERCAP_DESCRIBE_FASTCHANNEL,
 				   POWERCAP_PAI_SET, 4, domain,
 				   &fc[POWERCAP_FC_PAI].set_addr,
-				   &fc[POWERCAP_FC_PAI].set_db);
+				   &fc[POWERCAP_FC_PAI].set_db,
+				   &fc[POWERCAP_FC_PAI].rate_limit);
 
 	ph->hops->fastchannel_init(ph, POWERCAP_DESCRIBE_FASTCHANNEL,
 				   POWERCAP_PAI_GET, 4, domain,
-				   &fc[POWERCAP_FC_PAI].get_addr, NULL);
+				   &fc[POWERCAP_FC_PAI].get_addr, NULL,
+				   &fc[POWERCAP_FC_PAI].rate_limit);
 
 	*p_fc = fc;
 }
@@ -788,6 +808,26 @@ static int scmi_powercap_notify(const struct scmi_protocol_handle *ph,
 	return ret;
 }
 
+static bool
+scmi_powercap_notify_supported(const struct scmi_protocol_handle *ph,
+			       u8 evt_id, u32 src_id)
+{
+	bool supported = false;
+	const struct scmi_powercap_info *dom_info;
+	struct powercap_info *pi = ph->get_priv(ph);
+
+	if (evt_id >= ARRAY_SIZE(evt_2_cmd) || src_id >= pi->num_domains)
+		return false;
+
+	dom_info = pi->powercaps + src_id;
+	if (evt_id == SCMI_EVENT_POWERCAP_CAP_CHANGED)
+		supported = dom_info->notify_powercap_cap_change;
+	else if (evt_id == SCMI_EVENT_POWERCAP_MEASUREMENTS_CHANGED)
+		supported = dom_info->notify_powercap_measurement_change;
+
+	return supported;
+}
+
 static int
 scmi_powercap_set_notify_enabled(const struct scmi_protocol_handle *ph,
 				 u8 evt_id, u32 src_id, bool enable)
@@ -904,6 +944,7 @@ static const struct scmi_event powercap_events[] = {
 };
 
 static const struct scmi_event_ops powercap_event_ops = {
+	.is_notify_supported = scmi_powercap_notify_supported,
 	.get_num_sources = scmi_powercap_get_num_sources,
 	.set_notify_enabled = scmi_powercap_set_notify_enabled,
 	.fill_custom_report = scmi_powercap_fill_custom_report,
diff --git a/drivers/firmware/arm_scmi/protocols.h b/drivers/firmware/arm_scmi/protocols.h
index e683c26f24..317d3fb326 100644
--- a/drivers/firmware/arm_scmi/protocols.h
+++ b/drivers/firmware/arm_scmi/protocols.h
@@ -33,6 +33,7 @@ enum scmi_common_cmd {
 	PROTOCOL_VERSION = 0x0,
 	PROTOCOL_ATTRIBUTES = 0x1,
 	PROTOCOL_MESSAGE_ATTRIBUTES = 0x2,
+	NEGOTIATE_PROTOCOL_VERSION = 0x10,
 };
 
 /**
@@ -234,6 +235,7 @@ struct scmi_fc_info {
 	void __iomem *set_addr;
 	void __iomem *get_addr;
 	struct scmi_fc_db_info *set_db;
+	u32 rate_limit;
 };
 
 /**
@@ -251,6 +253,8 @@ struct scmi_fc_info {
  *			provided in @ops.
  * @iter_response_run: A common helper to trigger the run of a previously
  *		       initialized iterator.
+ * @protocol_msg_check: A common helper to check is a specific protocol message
+ *			is supported.
  * @fastchannel_init: A common helper used to initialize FC descriptors by
  *		      gathering FC descriptions from the SCMI platform server.
  * @fastchannel_db_ring: A common helper to ring a FC doorbell.
@@ -264,11 +268,14 @@ struct scmi_proto_helpers_ops {
 				    unsigned int max_resources, u8 msg_id,
 				    size_t tx_size, void *priv);
 	int (*iter_response_run)(void *iter);
+	int (*protocol_msg_check)(const struct scmi_protocol_handle *ph,
+				  u32 message_id, u32 *attributes);
 	void (*fastchannel_init)(const struct scmi_protocol_handle *ph,
 				 u8 describe_id, u32 message_id,
 				 u32 valid_size, u32 domain,
 				 void __iomem **p_addr,
-				 struct scmi_fc_db_info **p_db);
+				 struct scmi_fc_db_info **p_db,
+				 u32 *rate_limit);
 	void (*fastchannel_db_ring)(struct scmi_fc_db_info *db);
 };
 
diff --git a/drivers/firmware/arm_scmi/reset.c b/drivers/firmware/arm_scmi/reset.c
index 19970d9f9e..1b31831653 100644
--- a/drivers/firmware/arm_scmi/reset.c
+++ b/drivers/firmware/arm_scmi/reset.c
@@ -67,6 +67,7 @@ struct reset_dom_info {
 struct scmi_reset_info {
 	u32 version;
 	int num_domains;
+	bool notify_reset_cmd;
 	struct reset_dom_info *dom_info;
 };
 
@@ -89,18 +90,24 @@ static int scmi_reset_attributes_get(const struct scmi_protocol_handle *ph,
 	}
 
 	ph->xops->xfer_put(ph, t);
+
+	if (!ret)
+		if (!ph->hops->protocol_msg_check(ph, RESET_NOTIFY, NULL))
+			pi->notify_reset_cmd = true;
+
 	return ret;
 }
 
 static int
 scmi_reset_domain_attributes_get(const struct scmi_protocol_handle *ph,
-				 u32 domain, struct reset_dom_info *dom_info,
-				 u32 version)
+				 struct scmi_reset_info *pinfo,
+				 u32 domain, u32 version)
 {
 	int ret;
 	u32 attributes;
 	struct scmi_xfer *t;
 	struct scmi_msg_resp_reset_domain_attributes *attr;
+	struct reset_dom_info *dom_info = pinfo->dom_info + domain;
 
 	ret = ph->xops->xfer_get_init(ph, RESET_DOMAIN_ATTRIBUTES,
 				      sizeof(domain), sizeof(*attr), &t);
@@ -115,7 +122,9 @@ scmi_reset_domain_attributes_get(const struct scmi_protocol_handle *ph,
 		attributes = le32_to_cpu(attr->attributes);
 
 		dom_info->async_reset = SUPPORTS_ASYNC_RESET(attributes);
-		dom_info->reset_notify = SUPPORTS_NOTIFY_RESET(attributes);
+		if (pinfo->notify_reset_cmd)
+			dom_info->reset_notify =
+				SUPPORTS_NOTIFY_RESET(attributes);
 		dom_info->latency_us = le32_to_cpu(attr->latency);
 		if (dom_info->latency_us == U32_MAX)
 			dom_info->latency_us = 0;
@@ -226,6 +235,20 @@ static const struct scmi_reset_proto_ops reset_proto_ops = {
 	.deassert = scmi_reset_domain_deassert,
 };
 
+static bool scmi_reset_notify_supported(const struct scmi_protocol_handle *ph,
+					u8 evt_id, u32 src_id)
+{
+	struct reset_dom_info *dom;
+	struct scmi_reset_info *pi = ph->get_priv(ph);
+
+	if (evt_id != SCMI_EVENT_RESET_ISSUED || src_id >= pi->num_domains)
+		return false;
+
+	dom = pi->dom_info + src_id;
+
+	return dom->reset_notify;
+}
+
 static int scmi_reset_notify(const struct scmi_protocol_handle *ph,
 			     u32 domain_id, bool enable)
 {
@@ -301,6 +324,7 @@ static const struct scmi_event reset_events[] = {
 };
 
 static const struct scmi_event_ops reset_event_ops = {
+	.is_notify_supported = scmi_reset_notify_supported,
 	.get_num_sources = scmi_reset_get_num_sources,
 	.set_notify_enabled = scmi_reset_set_notify_enabled,
 	.fill_custom_report = scmi_reset_fill_custom_report,
@@ -339,11 +363,8 @@ static int scmi_reset_protocol_init(const struct scmi_protocol_handle *ph)
 	if (!pinfo->dom_info)
 		return -ENOMEM;
 
-	for (domain = 0; domain < pinfo->num_domains; domain++) {
-		struct reset_dom_info *dom = pinfo->dom_info + domain;
-
-		scmi_reset_domain_attributes_get(ph, domain, dom, version);
-	}
+	for (domain = 0; domain < pinfo->num_domains; domain++)
+		scmi_reset_domain_attributes_get(ph, pinfo, domain, version);
 
 	pinfo->version = version;
 	return ph->set_priv(ph, pinfo, version);
diff --git a/drivers/firmware/arm_scmi/sensors.c b/drivers/firmware/arm_scmi/sensors.c
index 3111499653..7fc5535ca3 100644
--- a/drivers/firmware/arm_scmi/sensors.c
+++ b/drivers/firmware/arm_scmi/sensors.c
@@ -215,6 +215,8 @@ struct scmi_sensor_update_notify_payld {
 
 struct sensors_info {
 	u32 version;
+	bool notify_trip_point_cmd;
+	bool notify_continuos_update_cmd;
 	int num_sensors;
 	int max_requests;
 	u64 reg_addr;
@@ -246,6 +248,18 @@ static int scmi_sensor_attributes_get(const struct scmi_protocol_handle *ph,
 	}
 
 	ph->xops->xfer_put(ph, t);
+
+	if (!ret) {
+		if (!ph->hops->protocol_msg_check(ph,
+						  SENSOR_TRIP_POINT_NOTIFY, NULL))
+			si->notify_trip_point_cmd = true;
+
+		if (!ph->hops->protocol_msg_check(ph,
+						  SENSOR_CONTINUOUS_UPDATE_NOTIFY,
+						  NULL))
+			si->notify_continuos_update_cmd = true;
+	}
+
 	return ret;
 }
 
@@ -594,7 +608,8 @@ iter_sens_descr_process_response(const struct scmi_protocol_handle *ph,
 	 * Such bitfields are assumed to be zeroed on non
 	 * relevant fw versions...assuming fw not buggy !
 	 */
-	s->update = SUPPORTS_UPDATE_NOTIFY(attrl);
+	if (si->notify_continuos_update_cmd)
+		s->update = SUPPORTS_UPDATE_NOTIFY(attrl);
 	s->timestamped = SUPPORTS_TIMESTAMP(attrl);
 	if (s->timestamped)
 		s->tstamp_scale = S32_EXT(SENSOR_TSTAMP_EXP(attrl));
@@ -988,6 +1003,25 @@ static const struct scmi_sensor_proto_ops sensor_proto_ops = {
 	.config_set = scmi_sensor_config_set,
 };
 
+static bool scmi_sensor_notify_supported(const struct scmi_protocol_handle *ph,
+					 u8 evt_id, u32 src_id)
+{
+	bool supported = false;
+	const struct scmi_sensor_info *s;
+	struct sensors_info *sinfo = ph->get_priv(ph);
+
+	s = scmi_sensor_info_get(ph, src_id);
+	if (!s)
+		return false;
+
+	if (evt_id == SCMI_EVENT_SENSOR_TRIP_POINT_EVENT)
+		supported = sinfo->notify_trip_point_cmd;
+	else if (evt_id == SCMI_EVENT_SENSOR_UPDATE)
+		supported = s->update;
+
+	return supported;
+}
+
 static int scmi_sensor_set_notify_enabled(const struct scmi_protocol_handle *ph,
 					  u8 evt_id, u32 src_id, bool enable)
 {
@@ -1099,6 +1133,7 @@ static const struct scmi_event sensor_events[] = {
 };
 
 static const struct scmi_event_ops sensor_event_ops = {
+	.is_notify_supported = scmi_sensor_notify_supported,
 	.get_num_sources = scmi_sensor_get_num_sources,
 	.set_notify_enabled = scmi_sensor_set_notify_enabled,
 	.fill_custom_report = scmi_sensor_fill_custom_report,
diff --git a/drivers/firmware/arm_scmi/system.c b/drivers/firmware/arm_scmi/system.c
index 1621da97bc..b6358c155f 100644
--- a/drivers/firmware/arm_scmi/system.c
+++ b/drivers/firmware/arm_scmi/system.c
@@ -36,8 +36,20 @@ struct scmi_system_power_state_notifier_payld {
 struct scmi_system_info {
 	u32 version;
 	bool graceful_timeout_supported;
+	bool power_state_notify_cmd;
 };
 
+static bool scmi_system_notify_supported(const struct scmi_protocol_handle *ph,
+					 u8 evt_id, u32 src_id)
+{
+	struct scmi_system_info *pinfo = ph->get_priv(ph);
+
+	if (evt_id != SCMI_EVENT_SYSTEM_POWER_STATE_NOTIFIER)
+		return false;
+
+	return pinfo->power_state_notify_cmd;
+}
+
 static int scmi_system_request_notify(const struct scmi_protocol_handle *ph,
 				      bool enable)
 {
@@ -114,6 +126,7 @@ static const struct scmi_event system_events[] = {
 };
 
 static const struct scmi_event_ops system_event_ops = {
+	.is_notify_supported = scmi_system_notify_supported,
 	.set_notify_enabled = scmi_system_set_notify_enabled,
 	.fill_custom_report = scmi_system_fill_custom_report,
 };
@@ -147,6 +160,9 @@ static int scmi_system_protocol_init(const struct scmi_protocol_handle *ph)
 	if (PROTOCOL_REV_MAJOR(pinfo->version) >= 0x2)
 		pinfo->graceful_timeout_supported = true;
 
+	if (!ph->hops->protocol_msg_check(ph, SYSTEM_POWER_STATE_NOTIFY, NULL))
+		pinfo->power_state_notify_cmd = true;
+
 	return ph->set_priv(ph, pinfo, version);
 }
 
diff --git a/drivers/firmware/cirrus/cs_dsp.c b/drivers/firmware/cirrus/cs_dsp.c
index 79d4254d1f..9f3d665cfd 100644
--- a/drivers/firmware/cirrus/cs_dsp.c
+++ b/drivers/firmware/cirrus/cs_dsp.c
@@ -522,7 +522,7 @@ void cs_dsp_cleanup_debugfs(struct cs_dsp *dsp)
 {
 	cs_dsp_debugfs_clear(dsp);
 	debugfs_remove_recursive(dsp->debugfs_root);
-	dsp->debugfs_root = NULL;
+	dsp->debugfs_root = ERR_PTR(-ENODEV);
 }
 EXPORT_SYMBOL_NS_GPL(cs_dsp_cleanup_debugfs, FW_CS_DSP);
 #else
@@ -2246,6 +2246,11 @@ static int cs_dsp_common_init(struct cs_dsp *dsp)
 
 	mutex_init(&dsp->pwr_lock);
 
+#ifdef CONFIG_DEBUG_FS
+	/* Ensure this is invalid if client never provides a debugfs root */
+	dsp->debugfs_root = ERR_PTR(-ENODEV);
+#endif
+
 	return 0;
 }
 
diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c
index 5f3a3e913d..d19c78a78a 100644
--- a/drivers/firmware/dmi-id.c
+++ b/drivers/firmware/dmi-id.c
@@ -169,9 +169,14 @@ static int dmi_dev_uevent(const struct device *dev, struct kobj_uevent_env *env)
 	return 0;
 }
 
+static void dmi_dev_release(struct device *dev)
+{
+	kfree(dev);
+}
+
 static struct class dmi_class = {
 	.name = "dmi",
-	.dev_release = (void(*)(struct device *)) kfree,
+	.dev_release = dmi_dev_release,
 	.dev_uevent = dmi_dev_uevent,
 };
 
diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
index 9b3884ff81..7d2cdd9e22 100644
--- a/drivers/firmware/efi/cper.c
+++ b/drivers/firmware/efi/cper.c
@@ -445,8 +445,8 @@ static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie,
 		printk("%saer_uncor_severity: 0x%08x\n",
 		       pfx, aer->uncor_severity);
 		printk("%sTLP Header: %08x %08x %08x %08x\n", pfx,
-		       aer->header_log.dw0, aer->header_log.dw1,
-		       aer->header_log.dw2, aer->header_log.dw3);
+		       aer->header_log.dw[0], aer->header_log.dw[1],
+		       aer->header_log.dw[2], aer->header_log.dw[3]);
 	}
 }
 
diff --git a/drivers/firmware/efi/earlycon.c b/drivers/firmware/efi/earlycon.c
index f80a9af3d1..d18a1a5de1 100644
--- a/drivers/firmware/efi/earlycon.c
+++ b/drivers/firmware/efi/earlycon.c
@@ -252,7 +252,7 @@ static int __init efi_earlycon_setup(struct earlycon_device *device,
 	if (si->lfb_depth != 32)
 		return -ENODEV;
 
-	font = get_default_font(xres, yres, -1, -1);
+	font = get_default_font(xres, yres, NULL, NULL);
 	if (!font)
 		return -ENODEV;
 
diff --git a/drivers/firmware/efi/efi-pstore.c b/drivers/firmware/efi/efi-pstore.c
index e7b9ec6f8a..833cbb995d 100644
--- a/drivers/firmware/efi/efi-pstore.c
+++ b/drivers/firmware/efi/efi-pstore.c
@@ -14,16 +14,43 @@ static unsigned int record_size = 1024;
 module_param(record_size, uint, 0444);
 MODULE_PARM_DESC(record_size, "size of each pstore UEFI var (in bytes, min/default=1024)");
 
-static bool efivars_pstore_disable =
-	IS_ENABLED(CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE);
-
-module_param_named(pstore_disable, efivars_pstore_disable, bool, 0644);
-
 #define PSTORE_EFI_ATTRIBUTES \
 	(EFI_VARIABLE_NON_VOLATILE | \
 	 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
 	 EFI_VARIABLE_RUNTIME_ACCESS)
 
+static bool pstore_disable = IS_ENABLED(CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE);
+
+static int efivars_pstore_init(void);
+static void efivars_pstore_exit(void);
+
+static int efi_pstore_disable_set(const char *val, const struct kernel_param *kp)
+{
+	int err;
+	bool old_pstore_disable = pstore_disable;
+
+	err = param_set_bool(val, kp);
+	if (err)
+		return err;
+
+	if (old_pstore_disable != pstore_disable) {
+		if (pstore_disable)
+			efivars_pstore_exit();
+		else
+			efivars_pstore_init();
+	}
+
+	return 0;
+}
+
+static const struct kernel_param_ops pstore_disable_ops = {
+	.set	= efi_pstore_disable_set,
+	.get	= param_get_bool,
+};
+
+module_param_cb(pstore_disable, &pstore_disable_ops, &pstore_disable, 0644);
+__MODULE_PARM_TYPE(pstore_disable, "bool");
+
 static int efi_pstore_open(struct pstore_info *psi)
 {
 	int err;
@@ -218,12 +245,12 @@ static struct pstore_info efi_pstore_info = {
 	.erase		= efi_pstore_erase,
 };
 
-static __init int efivars_pstore_init(void)
+static int efivars_pstore_init(void)
 {
 	if (!efivar_supports_writes())
 		return 0;
 
-	if (efivars_pstore_disable)
+	if (pstore_disable)
 		return 0;
 
 	/*
@@ -250,7 +277,7 @@ static __init int efivars_pstore_init(void)
 	return 0;
 }
 
-static __exit void efivars_pstore_exit(void)
+static void efivars_pstore_exit(void)
 {
 	if (!efi_pstore_info.bufsize)
 		return;
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 1ea14e86a7..fdf07dd6f4 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -599,7 +599,8 @@ static const efi_config_table_type_t common_tables[] __initconst = {
 	{EFI_MEMORY_ATTRIBUTES_TABLE_GUID,	&efi_mem_attr_table,	"MEMATTR"	},
 	{LINUX_EFI_RANDOM_SEED_TABLE_GUID,	&efi_rng_seed,		"RNG"		},
 	{LINUX_EFI_TPM_EVENT_LOG_GUID,		&efi.tpm_log,		"TPMEventLog"	},
-	{LINUX_EFI_TPM_FINAL_LOG_GUID,		&efi.tpm_final_log,	"TPMFinalLog"	},
+	{EFI_TCG2_FINAL_EVENTS_TABLE_GUID,	&efi.tpm_final_log,	"TPMFinalLog"	},
+	{EFI_CC_FINAL_EVENTS_TABLE_GUID,	&efi.tpm_final_log,	"CCFinalLog"	},
 	{LINUX_EFI_MEMRESERVE_TABLE_GUID,	&mem_reserve,		"MEMRESERVE"	},
 	{LINUX_EFI_INITRD_MEDIA_GUID,		&initrd,		"INITRD"	},
 	{EFI_RT_PROPERTIES_TABLE_GUID,		&rt_prop,		"RTPROP"	},
diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index 73f4810f6d..31eb1e287c 100644
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -105,7 +105,7 @@ lib-y				:= $(patsubst %.o,%.stub.o,$(lib-y))
 # Even when -mbranch-protection=none is set, Clang will generate a
 # .note.gnu.property for code-less object files (like lib/ctype.c),
 # so work around this by explicitly removing the unwanted section.
-# https://bugs.llvm.org/show_bug.cgi?id=46480
+# https://llvm.org/pr46480
 STUBCOPY_FLAGS-y		+= --remove-section=.note.gnu.property
 
 STUBCOPY_RELOC-$(CONFIG_X86_32)	:= R_386_32
diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c
index 3dc2f9aaf0..de659f6a81 100644
--- a/drivers/firmware/efi/libstub/efi-stub-helper.c
+++ b/drivers/firmware/efi/libstub/efi-stub-helper.c
@@ -11,6 +11,7 @@
 
 #include <linux/efi.h>
 #include <linux/kernel.h>
+#include <linux/overflow.h>
 #include <asm/efi.h>
 #include <asm/setup.h>
 
@@ -201,7 +202,7 @@ void efi_apply_loadoptions_quirk(const void **load_options, u32 *load_options_si
 	*load_options_size = load_option_unpacked.optional_data_size;
 }
 
-enum efistub_event {
+enum efistub_event_type {
 	EFISTUB_EVT_INITRD,
 	EFISTUB_EVT_LOAD_OPTIONS,
 	EFISTUB_EVT_COUNT,
@@ -227,54 +228,95 @@ static const struct {
 	},
 };
 
+static_assert(sizeof(efi_tcg2_event_t) == sizeof(efi_cc_event_t));
+
+union efistub_event {
+	efi_tcg2_event_t	tcg2_data;
+	efi_cc_event_t		cc_data;
+};
+
+struct efistub_measured_event {
+	union efistub_event	event_data;
+	TCG_PCClientTaggedEvent tagged_event __packed;
+};
+
 static efi_status_t efi_measure_tagged_event(unsigned long load_addr,
 					     unsigned long load_size,
-					     enum efistub_event event)
+					     enum efistub_event_type event)
 {
+	union {
+		efi_status_t
+		(__efiapi *hash_log_extend_event)(void *, u64, efi_physical_addr_t,
+						  u64, const union efistub_event *);
+		struct { u32 hash_log_extend_event; } mixed_mode;
+	} method;
+	struct efistub_measured_event *evt;
+	int size = struct_size(evt, tagged_event.tagged_event_data,
+			       events[event].event_data_len);
 	efi_guid_t tcg2_guid = EFI_TCG2_PROTOCOL_GUID;
 	efi_tcg2_protocol_t *tcg2 = NULL;
+	union efistub_event ev;
 	efi_status_t status;
+	void *protocol;
 
 	efi_bs_call(locate_protocol, &tcg2_guid, NULL, (void **)&tcg2);
 	if (tcg2) {
-		struct efi_measured_event {
-			efi_tcg2_event_t	event_data;
-			efi_tcg2_tagged_event_t tagged_event;
-			u8			tagged_event_data[];
-		} *evt;
-		int size = sizeof(*evt) + events[event].event_data_len;
-
-		status = efi_bs_call(allocate_pool, EFI_LOADER_DATA, size,
-				     (void **)&evt);
-		if (status != EFI_SUCCESS)
-			goto fail;
-
-		evt->event_data = (struct efi_tcg2_event){
+		ev.tcg2_data = (struct efi_tcg2_event){
 			.event_size			= size,
-			.event_header.header_size	= sizeof(evt->event_data.event_header),
+			.event_header.header_size	= sizeof(ev.tcg2_data.event_header),
 			.event_header.header_version	= EFI_TCG2_EVENT_HEADER_VERSION,
 			.event_header.pcr_index		= events[event].pcr_index,
 			.event_header.event_type	= EV_EVENT_TAG,
 		};
+		protocol = tcg2;
+		method.hash_log_extend_event =
+			(void *)efi_table_attr(tcg2, hash_log_extend_event);
+	} else {
+		efi_guid_t cc_guid = EFI_CC_MEASUREMENT_PROTOCOL_GUID;
+		efi_cc_protocol_t *cc = NULL;
 
-		evt->tagged_event = (struct efi_tcg2_tagged_event){
-			.tagged_event_id		= events[event].event_id,
-			.tagged_event_data_size		= events[event].event_data_len,
-		};
-
-		memcpy(evt->tagged_event_data, events[event].event_data,
-		       events[event].event_data_len);
+		efi_bs_call(locate_protocol, &cc_guid, NULL, (void **)&cc);
+		if (!cc)
+			return EFI_UNSUPPORTED;
 
-		status = efi_call_proto(tcg2, hash_log_extend_event, 0,
-					load_addr, load_size, &evt->event_data);
-		efi_bs_call(free_pool, evt);
+		ev.cc_data = (struct efi_cc_event){
+			.event_size			= size,
+			.event_header.header_size	= sizeof(ev.cc_data.event_header),
+			.event_header.header_version	= EFI_CC_EVENT_HEADER_VERSION,
+			.event_header.event_type	= EV_EVENT_TAG,
+		};
 
+		status = efi_call_proto(cc, map_pcr_to_mr_index,
+					events[event].pcr_index,
+					&ev.cc_data.event_header.mr_index);
 		if (status != EFI_SUCCESS)
 			goto fail;
-		return EFI_SUCCESS;
+
+		protocol = cc;
+		method.hash_log_extend_event =
+			(void *)efi_table_attr(cc, hash_log_extend_event);
 	}
 
-	return EFI_UNSUPPORTED;
+	status = efi_bs_call(allocate_pool, EFI_LOADER_DATA, size, (void **)&evt);
+	if (status != EFI_SUCCESS)
+		goto fail;
+
+	*evt = (struct efistub_measured_event) {
+		.event_data			     = ev,
+		.tagged_event.tagged_event_id	     = events[event].event_id,
+		.tagged_event.tagged_event_data_size = events[event].event_data_len,
+	};
+
+	memcpy(evt->tagged_event.tagged_event_data, events[event].event_data,
+	       events[event].event_data_len);
+
+	status = efi_fn_call(&method, hash_log_extend_event, protocol, 0,
+			     load_addr, load_size, &evt->event_data);
+	efi_bs_call(free_pool, evt);
+
+	if (status == EFI_SUCCESS)
+		return EFI_SUCCESS;
+
 fail:
 	efi_warn("Failed to measure data for event %d: 0x%lx\n", event, status);
 	return status;
diff --git a/drivers/firmware/efi/libstub/efi-stub.c b/drivers/firmware/efi/libstub/efi-stub.c
index f9c1e8a2bd..958a680e06 100644
--- a/drivers/firmware/efi/libstub/efi-stub.c
+++ b/drivers/firmware/efi/libstub/efi-stub.c
@@ -167,7 +167,7 @@ efi_status_t efi_stub_common(efi_handle_t handle,
 
 	si = setup_graphics();
 
-	efi_retrieve_tpm2_eventlog();
+	efi_retrieve_eventlog();
 
 	/* Ask the firmware to clear memory on unclean shutdown */
 	efi_enable_reset_attack_mitigation();
diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h
index fc18fd649e..27abb4ce02 100644
--- a/drivers/firmware/efi/libstub/efistub.h
+++ b/drivers/firmware/efi/libstub/efistub.h
@@ -843,14 +843,14 @@ struct efi_tcg2_event {
 	/* u8[] event follows here */
 } __packed;
 
-struct efi_tcg2_tagged_event {
-	u32 tagged_event_id;
-	u32 tagged_event_data_size;
-	/* u8  tagged event data follows here */
-} __packed;
+/* from TCG PC Client Platform Firmware Profile Specification */
+typedef struct tdTCG_PCClientTaggedEvent {
+	u32	tagged_event_id;
+	u32	tagged_event_data_size;
+	u8	tagged_event_data[];
+} TCG_PCClientTaggedEvent;
 
 typedef struct efi_tcg2_event efi_tcg2_event_t;
-typedef struct efi_tcg2_tagged_event efi_tcg2_tagged_event_t;
 typedef union efi_tcg2_protocol efi_tcg2_protocol_t;
 
 union efi_tcg2_protocol {
@@ -882,6 +882,87 @@ union efi_tcg2_protocol {
 	} mixed_mode;
 };
 
+typedef struct {
+	u8 major;
+	u8 minor;
+} efi_cc_version_t;
+
+typedef struct {
+	u8 type;
+	u8 sub_type;
+} efi_cc_type_t;
+
+/* EFI CC type/subtype defines */
+#define EFI_CC_TYPE_NONE		0
+#define EFI_CC_TYPE_AMD_SEV		1
+#define EFI_CC_TYPE_INTEL_TDX		2
+
+typedef u32 efi_cc_mr_index_t;
+
+struct efi_cc_event {
+	u32 event_size;
+	struct {
+		u32 header_size;
+		u16 header_version;
+		u32 mr_index;
+		u32 event_type;
+	} __packed event_header;
+	/* u8[] event follows here */
+} __packed;
+
+typedef struct efi_cc_event efi_cc_event_t;
+
+typedef u32 efi_cc_event_log_bitmap_t;
+typedef u32 efi_cc_event_log_format_t;
+typedef u32 efi_cc_event_algorithm_bitmap_t;
+
+typedef struct {
+	u8				size;
+	efi_cc_version_t		structure_version;
+	efi_cc_version_t		protocol_version;
+	efi_cc_event_algorithm_bitmap_t	hash_algorithm_bitmap;
+	efi_cc_event_log_bitmap_t	supported_event_logs;
+	efi_cc_type_t			cc_type;
+} efi_cc_boot_service_cap_t;
+
+#define EFI_CC_EVENT_HEADER_VERSION	1
+
+#define EFI_CC_BOOT_HASH_ALG_SHA384	0x00000004
+
+#define EFI_CC_EVENT_LOG_FORMAT_TCG_2	0x00000002
+
+typedef union efi_cc_protocol efi_cc_protocol_t;
+
+union efi_cc_protocol {
+	struct {
+		efi_status_t
+		(__efiapi *get_capability)(efi_cc_protocol_t *,
+					   efi_cc_boot_service_cap_t *);
+
+		efi_status_t
+		(__efiapi *get_event_log)(efi_cc_protocol_t *,
+					  efi_cc_event_log_format_t,
+					  efi_physical_addr_t *,
+					  efi_physical_addr_t *,
+					  efi_bool_t *);
+
+		efi_status_t
+		(__efiapi *hash_log_extend_event)(efi_cc_protocol_t *, u64,
+						  efi_physical_addr_t, u64,
+						  const efi_cc_event_t *);
+
+		efi_status_t
+		(__efiapi *map_pcr_to_mr_index)(efi_cc_protocol_t *, u32,
+						efi_cc_mr_index_t *);
+	};
+	struct {
+		u32 get_capability;
+		u32 get_event_log;
+		u32 hash_log_extend_event;
+		u32 map_pcr_to_mr_index;
+	} mixed_mode;
+};
+
 struct riscv_efi_boot_protocol {
 	u64 revision;
 
@@ -1061,7 +1142,7 @@ static inline void
 efi_enable_reset_attack_mitigation(void) { }
 #endif
 
-void efi_retrieve_tpm2_eventlog(void);
+void efi_retrieve_eventlog(void);
 
 struct screen_info *alloc_screen_info(void);
 struct screen_info *__alloc_screen_info(void);
diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c
index 70e9789ff9..6a337f1f87 100644
--- a/drivers/firmware/efi/libstub/fdt.c
+++ b/drivers/firmware/efi/libstub/fdt.c
@@ -335,8 +335,8 @@ fail_free_new_fdt:
 
 fail:
 	efi_free(fdt_size, fdt_addr);
-
-	efi_bs_call(free_pool, priv.runtime_map);
+	if (!efi_novamap)
+		efi_bs_call(free_pool, priv.runtime_map);
 
 	return EFI_LOAD_ERROR;
 }
diff --git a/drivers/firmware/efi/libstub/loongarch.c b/drivers/firmware/efi/libstub/loongarch.c
index 684c935463..d0ef93551c 100644
--- a/drivers/firmware/efi/libstub/loongarch.c
+++ b/drivers/firmware/efi/libstub/loongarch.c
@@ -41,7 +41,7 @@ static efi_status_t exit_boot_func(struct efi_boot_memmap *map, void *priv)
 unsigned long __weak kernel_entry_address(unsigned long kernel_addr,
 		efi_loaded_image_t *image)
 {
-	return *(unsigned long *)(kernel_addr + 8) - VMLINUX_LOAD_ADDRESS + kernel_addr;
+	return *(unsigned long *)(kernel_addr + 8) - PHYSADDR(VMLINUX_LOAD_ADDRESS) + kernel_addr;
 }
 
 efi_status_t efi_boot_kernel(void *handle, efi_loaded_image_t *image,
diff --git a/drivers/firmware/efi/libstub/tpm.c b/drivers/firmware/efi/libstub/tpm.c
index 7acbac16ea..df3182f2e6 100644
--- a/drivers/firmware/efi/libstub/tpm.c
+++ b/drivers/firmware/efi/libstub/tpm.c
@@ -47,39 +47,18 @@ void efi_enable_reset_attack_mitigation(void)
 
 #endif
 
-void efi_retrieve_tpm2_eventlog(void)
+static void efi_retrieve_tcg2_eventlog(int version, efi_physical_addr_t log_location,
+				       efi_physical_addr_t log_last_entry,
+				       efi_bool_t truncated,
+				       struct efi_tcg2_final_events_table *final_events_table)
 {
-	efi_guid_t tcg2_guid = EFI_TCG2_PROTOCOL_GUID;
 	efi_guid_t linux_eventlog_guid = LINUX_EFI_TPM_EVENT_LOG_GUID;
 	efi_status_t status;
-	efi_physical_addr_t log_location = 0, log_last_entry = 0;
 	struct linux_efi_tpm_eventlog *log_tbl = NULL;
-	struct efi_tcg2_final_events_table *final_events_table = NULL;
 	unsigned long first_entry_addr, last_entry_addr;
 	size_t log_size, last_entry_size;
-	efi_bool_t truncated;
-	int version = EFI_TCG2_EVENT_LOG_FORMAT_TCG_2;
-	efi_tcg2_protocol_t *tcg2_protocol = NULL;
 	int final_events_size = 0;
 
-	status = efi_bs_call(locate_protocol, &tcg2_guid, NULL,
-			     (void **)&tcg2_protocol);
-	if (status != EFI_SUCCESS)
-		return;
-
-	status = efi_call_proto(tcg2_protocol, get_event_log, version,
-				&log_location, &log_last_entry, &truncated);
-
-	if (status != EFI_SUCCESS || !log_location) {
-		version = EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2;
-		status = efi_call_proto(tcg2_protocol, get_event_log, version,
-					&log_location, &log_last_entry,
-					&truncated);
-		if (status != EFI_SUCCESS || !log_location)
-			return;
-
-	}
-
 	first_entry_addr = (unsigned long) log_location;
 
 	/*
@@ -93,8 +72,10 @@ void efi_retrieve_tpm2_eventlog(void)
 		 * get_event_log only returns the address of the last entry.
 		 * We need to calculate its size to deduce the full size of
 		 * the logs.
+		 *
+		 * CC Event log also uses TCG2 format, handle it same as TPM2.
 		 */
-		if (version == EFI_TCG2_EVENT_LOG_FORMAT_TCG_2) {
+		if (version > EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2) {
 			/*
 			 * The TCG2 log format has variable length entries,
 			 * and the information to decode the hash algorithms
@@ -127,8 +108,6 @@ void efi_retrieve_tpm2_eventlog(void)
 	 * Figure out whether any events have already been logged to the
 	 * final events structure, and if so how much space they take up
 	 */
-	if (version == EFI_TCG2_EVENT_LOG_FORMAT_TCG_2)
-		final_events_table = get_efi_config_table(LINUX_EFI_TPM_FINAL_LOG_GUID);
 	if (final_events_table && final_events_table->nr_events) {
 		struct tcg_pcr_event2_head *header;
 		int offset;
@@ -165,3 +144,50 @@ void efi_retrieve_tpm2_eventlog(void)
 err_free:
 	efi_bs_call(free_pool, log_tbl);
 }
+
+void efi_retrieve_eventlog(void)
+{
+	struct efi_tcg2_final_events_table *final_events_table = NULL;
+	efi_physical_addr_t log_location = 0, log_last_entry = 0;
+	efi_guid_t tpm2_guid = EFI_TCG2_PROTOCOL_GUID;
+	int version = EFI_TCG2_EVENT_LOG_FORMAT_TCG_2;
+	efi_tcg2_protocol_t *tpm2 = NULL;
+	efi_bool_t truncated;
+	efi_status_t status;
+
+	status = efi_bs_call(locate_protocol, &tpm2_guid, NULL, (void **)&tpm2);
+	if (status == EFI_SUCCESS) {
+		status = efi_call_proto(tpm2, get_event_log, version, &log_location,
+					&log_last_entry, &truncated);
+
+		if (status != EFI_SUCCESS || !log_location) {
+			version = EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2;
+			status = efi_call_proto(tpm2, get_event_log, version,
+						&log_location, &log_last_entry,
+						&truncated);
+		} else {
+			final_events_table =
+				get_efi_config_table(EFI_TCG2_FINAL_EVENTS_TABLE_GUID);
+		}
+	} else {
+		efi_guid_t cc_guid = EFI_CC_MEASUREMENT_PROTOCOL_GUID;
+		efi_cc_protocol_t *cc = NULL;
+
+		status = efi_bs_call(locate_protocol, &cc_guid, NULL, (void **)&cc);
+		if (status != EFI_SUCCESS)
+			return;
+
+		version = EFI_CC_EVENT_LOG_FORMAT_TCG_2;
+		status = efi_call_proto(cc, get_event_log, version, &log_location,
+					&log_last_entry, &truncated);
+
+		final_events_table =
+			get_efi_config_table(EFI_CC_FINAL_EVENTS_TABLE_GUID);
+	}
+
+	if (status != EFI_SUCCESS || !log_location)
+		return;
+
+	efi_retrieve_tcg2_eventlog(version, log_location, log_last_entry,
+				   truncated, final_events_table);
+}
diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c
index 19b51dc34f..1983fd3bf3 100644
--- a/drivers/firmware/efi/libstub/x86-stub.c
+++ b/drivers/firmware/efi/libstub/x86-stub.c
@@ -776,6 +776,26 @@ static void error(char *str)
 	efi_warn("Decompression failed: %s\n", str);
 }
 
+static const char *cmdline_memmap_override;
+
+static efi_status_t parse_options(const char *cmdline)
+{
+	static const char opts[][14] = {
+		"mem=", "memmap=", "efi_fake_mem=", "hugepages="
+	};
+
+	for (int i = 0; i < ARRAY_SIZE(opts); i++) {
+		const char *p = strstr(cmdline, opts[i]);
+
+		if (p == cmdline || (p > cmdline && isspace(p[-1]))) {
+			cmdline_memmap_override = opts[i];
+			break;
+		}
+	}
+
+	return efi_parse_options(cmdline);
+}
+
 static efi_status_t efi_decompress_kernel(unsigned long *kernel_entry)
 {
 	unsigned long virt_addr = LOAD_PHYSICAL_ADDR;
@@ -807,6 +827,10 @@ static efi_status_t efi_decompress_kernel(unsigned long *kernel_entry)
 		    !memcmp(efistub_fw_vendor(), ami, sizeof(ami))) {
 			efi_debug("AMI firmware v2.0 or older detected - disabling physical KASLR\n");
 			seed[0] = 0;
+		} else if (cmdline_memmap_override) {
+			efi_info("%s detected on the kernel command line - disabling physical KASLR\n",
+				 cmdline_memmap_override);
+			seed[0] = 0;
 		}
 
 		boot_params_ptr->hdr.loadflags |= KASLR_FLAG;
@@ -883,7 +907,7 @@ void __noreturn efi_stub_entry(efi_handle_t handle,
 	}
 
 #ifdef CONFIG_CMDLINE_BOOL
-	status = efi_parse_options(CONFIG_CMDLINE);
+	status = parse_options(CONFIG_CMDLINE);
 	if (status != EFI_SUCCESS) {
 		efi_err("Failed to parse options\n");
 		goto fail;
@@ -892,7 +916,7 @@ void __noreturn efi_stub_entry(efi_handle_t handle,
 	if (!IS_ENABLED(CONFIG_CMDLINE_OVERRIDE)) {
 		unsigned long cmdline_paddr = ((u64)hdr->cmd_line_ptr |
 					       ((u64)boot_params->ext_cmd_line_ptr << 32));
-		status = efi_parse_options((char *)cmdline_paddr);
+		status = parse_options((char *)cmdline_paddr);
 		if (status != EFI_SUCCESS) {
 			efi_err("Failed to parse options\n");
 			goto fail;
@@ -941,7 +965,7 @@ void __noreturn efi_stub_entry(efi_handle_t handle,
 
 	efi_random_get_seed();
 
-	efi_retrieve_tpm2_eventlog();
+	efi_retrieve_eventlog();
 
 	setup_graphics(boot_params);
 
diff --git a/drivers/firmware/efi/memmap.c b/drivers/firmware/efi/memmap.c
index 3365944f79..34109fd86c 100644
--- a/drivers/firmware/efi/memmap.c
+++ b/drivers/firmware/efi/memmap.c
@@ -15,10 +15,6 @@
 #include <asm/early_ioremap.h>
 #include <asm/efi.h>
 
-#ifndef __efi_memmap_free
-#define __efi_memmap_free(phys, size, flags) do { } while (0)
-#endif
-
 /**
  * __efi_memmap_init - Common code for mapping the EFI memory map
  * @data: EFI memory map data
@@ -51,11 +47,6 @@ int __init __efi_memmap_init(struct efi_memory_map_data *data)
 		return -ENOMEM;
 	}
 
-	if (efi.memmap.flags & (EFI_MEMMAP_MEMBLOCK | EFI_MEMMAP_SLAB))
-		__efi_memmap_free(efi.memmap.phys_map,
-				  efi.memmap.desc_size * efi.memmap.nr_map,
-				  efi.memmap.flags);
-
 	map.phys_map = data->phys_map;
 	map.nr_map = data->size / data->desc_size;
 	map.map_end = map.map + data->size;
diff --git a/drivers/firmware/efi/sysfb_efi.c b/drivers/firmware/efi/sysfb_efi.c
index 456d0e5eaf..cc807ed35a 100644
--- a/drivers/firmware/efi/sysfb_efi.c
+++ b/drivers/firmware/efi/sysfb_efi.c
@@ -336,7 +336,7 @@ static int efifb_add_links(struct fwnode_handle *fwnode)
 	if (!sup_np)
 		return 0;
 
-	fwnode_link_add(fwnode, of_fwnode_handle(sup_np));
+	fwnode_link_add(fwnode, of_fwnode_handle(sup_np), 0);
 	of_node_put(sup_np);
 
 	return 0;
diff --git a/drivers/firmware/google/cbmem.c b/drivers/firmware/google/cbmem.c
index 88e587ba1e..c2bffdc352 100644
--- a/drivers/firmware/google/cbmem.c
+++ b/drivers/firmware/google/cbmem.c
@@ -114,6 +114,12 @@ static int cbmem_entry_probe(struct coreboot_device *dev)
 	return 0;
 }
 
+static const struct coreboot_device_id cbmem_ids[] = {
+	{ .tag = LB_TAG_CBMEM_ENTRY },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(coreboot, cbmem_ids);
+
 static struct coreboot_driver cbmem_entry_driver = {
 	.probe = cbmem_entry_probe,
 	.drv = {
@@ -121,7 +127,7 @@ static struct coreboot_driver cbmem_entry_driver = {
 		.owner = THIS_MODULE,
 		.dev_groups = dev_groups,
 	},
-	.tag = LB_TAG_CBMEM_ENTRY,
+	.id_table = cbmem_ids,
 };
 module_coreboot_driver(cbmem_entry_driver);
 
diff --git a/drivers/firmware/google/coreboot_table.c b/drivers/firmware/google/coreboot_table.c
index 2a4469bf1b..d4b6e581a6 100644
--- a/drivers/firmware/google/coreboot_table.c
+++ b/drivers/firmware/google/coreboot_table.c
@@ -28,8 +28,17 @@ static int coreboot_bus_match(struct device *dev, struct device_driver *drv)
 {
 	struct coreboot_device *device = CB_DEV(dev);
 	struct coreboot_driver *driver = CB_DRV(drv);
+	const struct coreboot_device_id *id;
 
-	return device->entry.tag == driver->tag;
+	if (!driver->id_table)
+		return 0;
+
+	for (id = driver->id_table; id->tag; id++) {
+		if (device->entry.tag == id->tag)
+			return 1;
+	}
+
+	return 0;
 }
 
 static int coreboot_bus_probe(struct device *dev)
@@ -53,11 +62,20 @@ static void coreboot_bus_remove(struct device *dev)
 		driver->remove(device);
 }
 
-static struct bus_type coreboot_bus_type = {
+static int coreboot_bus_uevent(const struct device *dev, struct kobj_uevent_env *env)
+{
+	struct coreboot_device *device = CB_DEV(dev);
+	u32 tag = device->entry.tag;
+
+	return add_uevent_var(env, "MODALIAS=coreboot:t%08X", tag);
+}
+
+static const struct bus_type coreboot_bus_type = {
 	.name		= "coreboot",
 	.match		= coreboot_bus_match,
 	.probe		= coreboot_bus_probe,
 	.remove		= coreboot_bus_remove,
+	.uevent		= coreboot_bus_uevent,
 };
 
 static void coreboot_device_release(struct device *dev)
diff --git a/drivers/firmware/google/coreboot_table.h b/drivers/firmware/google/coreboot_table.h
index d814dca33a..86427989c5 100644
--- a/drivers/firmware/google/coreboot_table.h
+++ b/drivers/firmware/google/coreboot_table.h
@@ -13,6 +13,7 @@
 #define __COREBOOT_TABLE_H
 
 #include <linux/device.h>
+#include <linux/mod_devicetable.h>
 
 /* Coreboot table header structure */
 struct coreboot_table_header {
@@ -93,7 +94,7 @@ struct coreboot_driver {
 	int (*probe)(struct coreboot_device *);
 	void (*remove)(struct coreboot_device *);
 	struct device_driver drv;
-	u32 tag;
+	const struct coreboot_device_id *id_table;
 };
 
 /* Register a driver that uses the data from a coreboot table. */
diff --git a/drivers/firmware/google/framebuffer-coreboot.c b/drivers/firmware/google/framebuffer-coreboot.c
index 5c84bbebfe..07c458bf64 100644
--- a/drivers/firmware/google/framebuffer-coreboot.c
+++ b/drivers/firmware/google/framebuffer-coreboot.c
@@ -80,13 +80,19 @@ static void framebuffer_remove(struct coreboot_device *dev)
 	platform_device_unregister(pdev);
 }
 
+static const struct coreboot_device_id framebuffer_ids[] = {
+	{ .tag = CB_TAG_FRAMEBUFFER },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(coreboot, framebuffer_ids);
+
 static struct coreboot_driver framebuffer_driver = {
 	.probe = framebuffer_probe,
 	.remove = framebuffer_remove,
 	.drv = {
 		.name = "framebuffer",
 	},
-	.tag = CB_TAG_FRAMEBUFFER,
+	.id_table = framebuffer_ids,
 };
 module_coreboot_driver(framebuffer_driver);
 
diff --git a/drivers/firmware/google/memconsole-coreboot.c b/drivers/firmware/google/memconsole-coreboot.c
index 74b5286518..24c97a70aa 100644
--- a/drivers/firmware/google/memconsole-coreboot.c
+++ b/drivers/firmware/google/memconsole-coreboot.c
@@ -96,13 +96,19 @@ static void memconsole_remove(struct coreboot_device *dev)
 	memconsole_exit();
 }
 
+static const struct coreboot_device_id memconsole_ids[] = {
+	{ .tag = CB_TAG_CBMEM_CONSOLE },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(coreboot, memconsole_ids);
+
 static struct coreboot_driver memconsole_driver = {
 	.probe = memconsole_probe,
 	.remove = memconsole_remove,
 	.drv = {
 		.name = "memconsole",
 	},
-	.tag = CB_TAG_CBMEM_CONSOLE,
+	.id_table = memconsole_ids,
 };
 module_coreboot_driver(memconsole_driver);
 
diff --git a/drivers/firmware/google/vpd.c b/drivers/firmware/google/vpd.c
index ee6e08c059..8e4216714b 100644
--- a/drivers/firmware/google/vpd.c
+++ b/drivers/firmware/google/vpd.c
@@ -306,13 +306,19 @@ static void vpd_remove(struct coreboot_device *dev)
 	kobject_put(vpd_kobj);
 }
 
+static const struct coreboot_device_id vpd_ids[] = {
+	{ .tag = CB_TAG_VPD },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(coreboot, vpd_ids);
+
 static struct coreboot_driver vpd_driver = {
 	.probe = vpd_probe,
 	.remove = vpd_remove,
 	.drv = {
 		.name = "vpd",
 	},
-	.tag = CB_TAG_VPD,
+	.id_table = vpd_ids,
 };
 module_coreboot_driver(vpd_driver);
 
diff --git a/drivers/firmware/microchip/mpfs-auto-update.c b/drivers/firmware/microchip/mpfs-auto-update.c
index 23134ffc4d..835a19a7a3 100644
--- a/drivers/firmware/microchip/mpfs-auto-update.c
+++ b/drivers/firmware/microchip/mpfs-auto-update.c
@@ -267,7 +267,7 @@ static int mpfs_auto_update_set_image_address(struct mpfs_auto_update_priv *priv
 	       AUTO_UPDATE_DIRECTORY_WIDTH);
 	memset(buffer + AUTO_UPDATE_BLANK_DIRECTORY, 0x0, AUTO_UPDATE_DIRECTORY_WIDTH);
 
-	dev_info(priv->dev, "Writing the image address (%x) to the flash directory (%llx)\n",
+	dev_info(priv->dev, "Writing the image address (0x%x) to the flash directory (0x%llx)\n",
 		 image_address, directory_address);
 
 	ret = mtd_write(priv->flash, 0x0, erase_size, &bytes_written, (u_char *)buffer);
@@ -315,7 +315,7 @@ static int mpfs_auto_update_write_bitstream(struct fw_upload *fw_uploader, const
 	erase.len = round_up(size, (size_t)priv->flash->erasesize);
 	erase.addr = image_address;
 
-	dev_info(priv->dev, "Erasing the flash at address (%x)\n", image_address);
+	dev_info(priv->dev, "Erasing the flash at address (0x%x)\n", image_address);
 	ret = mtd_erase(priv->flash, &erase);
 	if (ret)
 		goto out;
@@ -325,7 +325,7 @@ static int mpfs_auto_update_write_bitstream(struct fw_upload *fw_uploader, const
 	 * will do all of that itself - including verifying that the bitstream
 	 * is valid.
 	 */
-	dev_info(priv->dev, "Writing the image to the flash at address (%x)\n", image_address);
+	dev_info(priv->dev, "Writing the image to the flash at address (0x%x)\n", image_address);
 	ret = mtd_write(priv->flash, (loff_t)image_address, size, &bytes_written, data);
 	if (ret)
 		goto out;
diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index d9629ff878..2328ca58bb 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -497,10 +497,12 @@ int psci_cpu_suspend_enter(u32 state)
 
 static int psci_system_suspend(unsigned long unused)
 {
+	int err;
 	phys_addr_t pa_cpu_resume = __pa_symbol(cpu_resume);
 
-	return invoke_psci_fn(PSCI_FN_NATIVE(1_0, SYSTEM_SUSPEND),
+	err = invoke_psci_fn(PSCI_FN_NATIVE(1_0, SYSTEM_SUSPEND),
 			      pa_cpu_resume, 0, 0);
+	return psci_to_linux_errno(err);
 }
 
 static int psci_system_suspend_enter(suspend_state_t state)
diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c
index 29c24578ad..2ad85052b3 100644
--- a/drivers/firmware/qcom/qcom_scm.c
+++ b/drivers/firmware/qcom/qcom_scm.c
@@ -569,13 +569,14 @@ int qcom_scm_pas_init_image(u32 peripheral, const void *metadata, size_t size,
 
 	ret = qcom_scm_bw_enable();
 	if (ret)
-		return ret;
+		goto disable_clk;
 
 	desc.args[1] = mdata_phys;
 
 	ret = qcom_scm_call(__scm->dev, &desc, &res);
-
 	qcom_scm_bw_disable();
+
+disable_clk:
 	qcom_scm_clk_disable();
 
 out:
@@ -637,10 +638,12 @@ int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr, phys_addr_t size)
 
 	ret = qcom_scm_bw_enable();
 	if (ret)
-		return ret;
+		goto disable_clk;
 
 	ret = qcom_scm_call(__scm->dev, &desc, &res);
 	qcom_scm_bw_disable();
+
+disable_clk:
 	qcom_scm_clk_disable();
 
 	return ret ? : res.result[0];
@@ -672,10 +675,12 @@ int qcom_scm_pas_auth_and_reset(u32 peripheral)
 
 	ret = qcom_scm_bw_enable();
 	if (ret)
-		return ret;
+		goto disable_clk;
 
 	ret = qcom_scm_call(__scm->dev, &desc, &res);
 	qcom_scm_bw_disable();
+
+disable_clk:
 	qcom_scm_clk_disable();
 
 	return ret ? : res.result[0];
@@ -706,11 +711,12 @@ int qcom_scm_pas_shutdown(u32 peripheral)
 
 	ret = qcom_scm_bw_enable();
 	if (ret)
-		return ret;
+		goto disable_clk;
 
 	ret = qcom_scm_call(__scm->dev, &desc, &res);
-
 	qcom_scm_bw_disable();
+
+disable_clk:
 	qcom_scm_clk_disable();
 
 	return ret ? : res.result[0];
diff --git a/drivers/firmware/qemu_fw_cfg.c b/drivers/firmware/qemu_fw_cfg.c
index 03da9a4354..5f43dfa22f 100644
--- a/drivers/firmware/qemu_fw_cfg.c
+++ b/drivers/firmware/qemu_fw_cfg.c
@@ -37,7 +37,7 @@
 #include <uapi/linux/qemu_fw_cfg.h>
 #include <linux/delay.h>
 #include <linux/crash_dump.h>
-#include <linux/crash_core.h>
+#include <linux/vmcore_info.h>
 
 MODULE_AUTHOR("Gabriel L. Somlo <somlo@cmu.edu>");
 MODULE_DESCRIPTION("QEMU fw_cfg sysfs support");
@@ -67,7 +67,7 @@ static void fw_cfg_sel_endianness(u16 key)
 		iowrite16(key, fw_cfg_reg_ctrl);
 }
 
-#ifdef CONFIG_CRASH_CORE
+#ifdef CONFIG_VMCORE_INFO
 static inline bool fw_cfg_dma_enabled(void)
 {
 	return (fw_cfg_rev & FW_CFG_VERSION_DMA) && fw_cfg_reg_dma;
@@ -156,7 +156,7 @@ static ssize_t fw_cfg_read_blob(u16 key,
 	return count;
 }
 
-#ifdef CONFIG_CRASH_CORE
+#ifdef CONFIG_VMCORE_INFO
 /* write chunk of given fw_cfg blob (caller responsible for sanity-check) */
 static ssize_t fw_cfg_write_blob(u16 key,
 				 void *buf, loff_t pos, size_t count)
@@ -195,7 +195,7 @@ end:
 
 	return ret;
 }
-#endif /* CONFIG_CRASH_CORE */
+#endif /* CONFIG_VMCORE_INFO */
 
 /* clean up fw_cfg device i/o */
 static void fw_cfg_io_cleanup(void)
@@ -319,7 +319,7 @@ struct fw_cfg_sysfs_entry {
 	struct list_head list;
 };
 
-#ifdef CONFIG_CRASH_CORE
+#ifdef CONFIG_VMCORE_INFO
 static ssize_t fw_cfg_write_vmcoreinfo(const struct fw_cfg_file *f)
 {
 	static struct fw_cfg_vmcoreinfo *data;
@@ -343,7 +343,7 @@ static ssize_t fw_cfg_write_vmcoreinfo(const struct fw_cfg_file *f)
 	kfree(data);
 	return ret;
 }
-#endif /* CONFIG_CRASH_CORE */
+#endif /* CONFIG_VMCORE_INFO */
 
 /* get fw_cfg_sysfs_entry from kobject member */
 static inline struct fw_cfg_sysfs_entry *to_entry(struct kobject *kobj)
@@ -583,7 +583,7 @@ static int fw_cfg_register_file(const struct fw_cfg_file *f)
 	int err;
 	struct fw_cfg_sysfs_entry *entry;
 
-#ifdef CONFIG_CRASH_CORE
+#ifdef CONFIG_VMCORE_INFO
 	if (fw_cfg_dma_enabled() &&
 		strcmp(f->name, FW_CFG_VMCOREINFO_FILENAME) == 0 &&
 		!is_kdump_kernel()) {
diff --git a/drivers/firmware/sysfb.c b/drivers/firmware/sysfb.c
index 3c197db42c..880ffcb500 100644
--- a/drivers/firmware/sysfb.c
+++ b/drivers/firmware/sysfb.c
@@ -29,6 +29,7 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
+#include <linux/pci.h>
 #include <linux/platform_data/simplefb.h>
 #include <linux/platform_device.h>
 #include <linux/screen_info.h>
@@ -69,24 +70,72 @@ void sysfb_disable(void)
 }
 EXPORT_SYMBOL_GPL(sysfb_disable);
 
+#if defined(CONFIG_PCI)
+static __init bool sysfb_pci_dev_is_enabled(struct pci_dev *pdev)
+{
+	/*
+	 * TODO: Try to integrate this code into the PCI subsystem
+	 */
+	int ret;
+	u16 command;
+
+	ret = pci_read_config_word(pdev, PCI_COMMAND, &command);
+	if (ret != PCIBIOS_SUCCESSFUL)
+		return false;
+	if (!(command & PCI_COMMAND_MEMORY))
+		return false;
+	return true;
+}
+#else
+static __init bool sysfb_pci_dev_is_enabled(struct pci_dev *pdev)
+{
+	return false;
+}
+#endif
+
+static __init struct device *sysfb_parent_dev(const struct screen_info *si)
+{
+	struct pci_dev *pdev;
+
+	pdev = screen_info_pci_dev(si);
+	if (IS_ERR(pdev)) {
+		return ERR_CAST(pdev);
+	} else if (pdev) {
+		if (!sysfb_pci_dev_is_enabled(pdev))
+			return ERR_PTR(-ENODEV);
+		return &pdev->dev;
+	}
+
+	return NULL;
+}
+
 static __init int sysfb_init(void)
 {
 	struct screen_info *si = &screen_info;
+	struct device *parent;
 	struct simplefb_platform_data mode;
 	const char *name;
 	bool compatible;
 	int ret = 0;
 
+	screen_info_apply_fixups();
+
 	mutex_lock(&disable_lock);
 	if (disabled)
 		goto unlock_mutex;
 
 	sysfb_apply_efi_quirks();
 
+	parent = sysfb_parent_dev(si);
+	if (IS_ERR(parent)) {
+		ret = PTR_ERR(parent);
+		goto unlock_mutex;
+	}
+
 	/* try to create a simple-framebuffer device */
 	compatible = sysfb_parse_mode(si, &mode);
 	if (compatible) {
-		pd = sysfb_create_simplefb(si, &mode);
+		pd = sysfb_create_simplefb(si, &mode, parent);
 		if (!IS_ERR(pd))
 			goto unlock_mutex;
 	}
@@ -109,6 +158,8 @@ static __init int sysfb_init(void)
 		goto unlock_mutex;
 	}
 
+	pd->dev.parent = parent;
+
 	sysfb_set_efifb_fwnode(pd);
 
 	ret = platform_device_add_data(pd, si, sizeof(*si));
diff --git a/drivers/firmware/sysfb_simplefb.c b/drivers/firmware/sysfb_simplefb.c
index 74363ed750..75a186bf8f 100644
--- a/drivers/firmware/sysfb_simplefb.c
+++ b/drivers/firmware/sysfb_simplefb.c
@@ -91,7 +91,8 @@ __init bool sysfb_parse_mode(const struct screen_info *si,
 }
 
 __init struct platform_device *sysfb_create_simplefb(const struct screen_info *si,
-						     const struct simplefb_platform_data *mode)
+						     const struct simplefb_platform_data *mode,
+						     struct device *parent)
 {
 	struct platform_device *pd;
 	struct resource res;
@@ -143,6 +144,8 @@ __init struct platform_device *sysfb_create_simplefb(const struct screen_info *s
 	if (!pd)
 		return ERR_PTR(-ENOMEM);
 
+	pd->dev.parent = parent;
+
 	sysfb_set_efifb_fwnode(pd);
 
 	ret = platform_device_add_resources(pd, &res, 1);
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 79789f0563..9bc45357e1 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -3,6 +3,7 @@
  * Xilinx Zynq MPSoC Firmware layer
  *
  *  Copyright (C) 2014-2022 Xilinx, Inc.
+ *  Copyright (C) 2022 - 2023, Advanced Micro Devices, Inc.
  *
  *  Michal Simek <michal.simek@amd.com>
  *  Davorin Mista <davorin.mista@aggios.com>
@@ -1385,6 +1386,30 @@ int zynqmp_pm_aes_engine(const u64 address, u32 *out)
 EXPORT_SYMBOL_GPL(zynqmp_pm_aes_engine);
 
 /**
+ * zynqmp_pm_efuse_access - Provides access to efuse memory.
+ * @address:	Address of the efuse params structure
+ * @out:		Returned output value
+ *
+ * Return:	Returns status, either success or error code.
+ */
+int zynqmp_pm_efuse_access(const u64 address, u32 *out)
+{
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+	int ret;
+
+	if (!out)
+		return -EINVAL;
+
+	ret = zynqmp_pm_invoke_fn(PM_EFUSE_ACCESS, ret_payload, 2,
+				  upper_32_bits(address),
+				  lower_32_bits(address));
+	*out = ret_payload[1];
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_efuse_access);
+
+/**
  * zynqmp_pm_sha_hash - Access the SHA engine to calculate the hash
  * @address:	Address of the data/ Address of output buffer where
  *		hash should be stored.