Merge remote-tracking branch 'origin/master' into perf/core

Further perf/core patches will depend on:

  d3f7b1bb2040 ("mm/gup: fix gup_fast with dynamic page table folding")

which is already in Linus' tree.

57 files changed, 1524 insertions, 731 deletions

diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index fbd785dd0513..3315e3c21586 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -7,7 +7,7 @@
 menu "Firmware Drivers"
 
 config ARM_SCMI_PROTOCOL
-	bool "ARM System Control and Management Interface (SCMI) Message Protocol"
+	tristate "ARM System Control and Management Interface (SCMI) Message Protocol"
 	depends on ARM || ARM64 || COMPILE_TEST
 	depends on MAILBOX
 	help
@@ -178,16 +178,15 @@ config ISCSI_IBFT
 	  Otherwise, say N.
 
 config RASPBERRYPI_FIRMWARE
-	bool "Raspberry Pi Firmware Driver"
+	tristate "Raspberry Pi Firmware Driver"
 	depends on BCM2835_MBOX
-	default USB_PCI
 	help
 	  This option enables support for communicating with the firmware on the
 	  Raspberry Pi.
 
 config FW_CFG_SYSFS
 	tristate "QEMU fw_cfg device support in sysfs"
-	depends on SYSFS && (ARM || ARM64 || PPC_PMAC || SPARC || X86)
+	depends on SYSFS && (ARM || ARM64 || PARISC || PPC_PMAC || SPARC || X86)
 	depends on HAS_IOPORT_MAP
 	default n
 	help
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 99510be9f5ed..5e013b6a3692 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -22,7 +22,7 @@ obj-$(CONFIG_TI_SCI_PROTOCOL)	+= ti_sci.o
 obj-$(CONFIG_TRUSTED_FOUNDATIONS) += trusted_foundations.o
 obj-$(CONFIG_TURRIS_MOX_RWTM)	+= turris-mox-rwtm.o
 
-obj-$(CONFIG_ARM_SCMI_PROTOCOL)	+= arm_scmi/
+obj-y				+= arm_scmi/
 obj-y				+= broadcom/
 obj-y				+= meson/
 obj-$(CONFIG_GOOGLE_FIRMWARE)	+= google/
diff --git a/drivers/firmware/arm_scmi/Makefile b/drivers/firmware/arm_scmi/Makefile
index 6f9cbc4aef22..bc0d54f8e861 100644
--- a/drivers/firmware/arm_scmi/Makefile
+++ b/drivers/firmware/arm_scmi/Makefile
@@ -1,9 +1,11 @@
 # SPDX-License-Identifier: GPL-2.0-only
-obj-y	= scmi-bus.o scmi-driver.o scmi-protocols.o scmi-transport.o
 scmi-bus-y = bus.o
 scmi-driver-y = driver.o notify.o
 scmi-transport-y = shmem.o
 scmi-transport-$(CONFIG_MAILBOX) += mailbox.o
 scmi-transport-$(CONFIG_HAVE_ARM_SMCCC_DISCOVERY) += smc.o
-scmi-protocols-y = base.o clock.o perf.o power.o reset.o sensors.o
+scmi-protocols-y = base.o clock.o perf.o power.o reset.o sensors.o system.o
+scmi-module-objs := $(scmi-bus-y) $(scmi-driver-y) $(scmi-protocols-y) \
+		    $(scmi-transport-y)
+obj-$(CONFIG_ARM_SCMI_PROTOCOL) += scmi-module.o
 obj-$(CONFIG_ARM_SCMI_POWER_DOMAIN) += scmi_pm_domain.o
diff --git a/drivers/firmware/arm_scmi/base.c b/drivers/firmware/arm_scmi/base.c
index 9853bd3c4d45..017e5d8bd869 100644
--- a/drivers/firmware/arm_scmi/base.c
+++ b/drivers/firmware/arm_scmi/base.c
@@ -197,6 +197,8 @@ static int scmi_base_implementation_list_get(const struct scmi_handle *handle,
 			protocols_imp[tot_num_ret + loop] = *(list + loop);
 
 		tot_num_ret += loop_num_ret;
+
+		scmi_reset_rx_to_maxsz(handle, t);
 	} while (loop_num_ret);
 
 	scmi_xfer_put(handle, t);
diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c
index db55c43a2cbd..1377ec76a45d 100644
--- a/drivers/firmware/arm_scmi/bus.c
+++ b/drivers/firmware/arm_scmi/bus.c
@@ -230,7 +230,7 @@ static void scmi_devices_unregister(void)
 	bus_for_each_dev(&scmi_bus_type, NULL, NULL, __scmi_devices_unregister);
 }
 
-static int __init scmi_bus_init(void)
+int __init scmi_bus_init(void)
 {
 	int retval;
 
@@ -240,12 +240,10 @@ static int __init scmi_bus_init(void)
 
 	return retval;
 }
-subsys_initcall(scmi_bus_init);
 
-static void __exit scmi_bus_exit(void)
+void __exit scmi_bus_exit(void)
 {
 	scmi_devices_unregister();
 	bus_unregister(&scmi_bus_type);
 	ida_destroy(&scmi_bus_id);
 }
-module_exit(scmi_bus_exit);
diff --git a/drivers/firmware/arm_scmi/clock.c b/drivers/firmware/arm_scmi/clock.c
index 75e39882746e..4645677d86f1 100644
--- a/drivers/firmware/arm_scmi/clock.c
+++ b/drivers/firmware/arm_scmi/clock.c
@@ -192,6 +192,8 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id,
 		}
 
 		tot_rate_cnt += num_returned;
+
+		scmi_reset_rx_to_maxsz(handle, t);
 		/*
 		 * check for both returned and remaining to avoid infinite
 		 * loop due to buggy firmware
@@ -318,7 +320,7 @@ scmi_clock_info_get(const struct scmi_handle *handle, u32 clk_id)
 	return clk;
 }
 
-static struct scmi_clk_ops clk_ops = {
+static const struct scmi_clk_ops clk_ops = {
 	.count_get = scmi_clock_count_get,
 	.info_get = scmi_clock_info_get,
 	.rate_get = scmi_clock_rate_get,
@@ -364,9 +366,4 @@ static int scmi_clock_protocol_init(struct scmi_handle *handle)
 	return 0;
 }
 
-static int __init scmi_clock_init(void)
-{
-	return scmi_protocol_register(SCMI_PROTOCOL_CLOCK,
-				      &scmi_clock_protocol_init);
-}
-subsys_initcall(scmi_clock_init);
+DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(SCMI_PROTOCOL_CLOCK, clock)
diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h
index c113e578cc6c..65063fa948d4 100644
--- a/drivers/firmware/arm_scmi/common.h
+++ b/drivers/firmware/arm_scmi/common.h
@@ -147,6 +147,8 @@ int scmi_do_xfer_with_response(const struct scmi_handle *h,
 			       struct scmi_xfer *xfer);
 int scmi_xfer_get_init(const struct scmi_handle *h, u8 msg_id, u8 prot_id,
 		       size_t tx_size, size_t rx_size, struct scmi_xfer **p);
+void scmi_reset_rx_to_maxsz(const struct scmi_handle *handle,
+			    struct scmi_xfer *xfer);
 int scmi_handle_put(const struct scmi_handle *handle);
 struct scmi_handle *scmi_handle_get(struct device *dev);
 void scmi_set_handle(struct scmi_device *scmi_dev);
@@ -156,6 +158,30 @@ void scmi_setup_protocol_implemented(const struct scmi_handle *handle,
 
 int scmi_base_protocol_init(struct scmi_handle *h);
 
+int __init scmi_bus_init(void);
+void __exit scmi_bus_exit(void);
+
+#define DECLARE_SCMI_REGISTER_UNREGISTER(func)		\
+	int __init scmi_##func##_register(void);	\
+	void __exit scmi_##func##_unregister(void)
+DECLARE_SCMI_REGISTER_UNREGISTER(clock);
+DECLARE_SCMI_REGISTER_UNREGISTER(perf);
+DECLARE_SCMI_REGISTER_UNREGISTER(power);
+DECLARE_SCMI_REGISTER_UNREGISTER(reset);
+DECLARE_SCMI_REGISTER_UNREGISTER(sensors);
+DECLARE_SCMI_REGISTER_UNREGISTER(system);
+
+#define DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(id, name) \
+int __init scmi_##name##_register(void) \
+{ \
+	return scmi_protocol_register((id), &scmi_##name##_protocol_init); \
+} \
+\
+void __exit scmi_##name##_unregister(void) \
+{ \
+	scmi_protocol_unregister((id)); \
+}
+
 /* SCMI Transport */
 /**
  * struct scmi_chan_info - Structure representing a SCMI channel information
@@ -210,7 +236,7 @@ struct scmi_transport_ops {
  * @max_msg_size: Maximum size of data per message that can be handled.
  */
 struct scmi_desc {
-	struct scmi_transport_ops *ops;
+	const struct scmi_transport_ops *ops;
 	int max_rx_timeout_ms;
 	int max_msg;
 	int max_msg_size;
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 03ec74242c14..3dfd8b6a0ebf 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -402,6 +402,14 @@ int scmi_do_xfer(const struct scmi_handle *handle, struct scmi_xfer *xfer)
 	return ret;
 }
 
+void scmi_reset_rx_to_maxsz(const struct scmi_handle *handle,
+			    struct scmi_xfer *xfer)
+{
+	struct scmi_info *info = handle_to_scmi_info(handle);
+
+	xfer->rx.len = info->desc->max_msg_size;
+}
+
 #define SCMI_MAX_RESPONSE_TIMEOUT	(2 * MSEC_PER_SEC)
 
 /**
@@ -730,6 +738,7 @@ struct scmi_prot_devnames {
 
 static struct scmi_prot_devnames devnames[] = {
 	{ SCMI_PROTOCOL_POWER,  { "genpd" },},
+	{ SCMI_PROTOCOL_SYSTEM, { "syspower" },},
 	{ SCMI_PROTOCOL_PERF,   { "cpufreq" },},
 	{ SCMI_PROTOCOL_CLOCK,  { "clocks" },},
 	{ SCMI_PROTOCOL_SENSOR, { "hwmon" },},
@@ -928,7 +937,35 @@ static struct platform_driver scmi_driver = {
 	.remove = scmi_remove,
 };
 
-module_platform_driver(scmi_driver);
+static int __init scmi_driver_init(void)
+{
+	scmi_bus_init();
+
+	scmi_clock_register();
+	scmi_perf_register();
+	scmi_power_register();
+	scmi_reset_register();
+	scmi_sensors_register();
+	scmi_system_register();
+
+	return platform_driver_register(&scmi_driver);
+}
+subsys_initcall(scmi_driver_init);
+
+static void __exit scmi_driver_exit(void)
+{
+	scmi_bus_exit();
+
+	scmi_clock_unregister();
+	scmi_perf_unregister();
+	scmi_power_unregister();
+	scmi_reset_unregister();
+	scmi_sensors_unregister();
+	scmi_system_unregister();
+
+	platform_driver_unregister(&scmi_driver);
+}
+module_exit(scmi_driver_exit);
 
 MODULE_ALIAS("platform: arm-scmi");
 MODULE_AUTHOR("Sudeep Holla <sudeep.holla@arm.com>");
diff --git a/drivers/firmware/arm_scmi/mailbox.c b/drivers/firmware/arm_scmi/mailbox.c
index 6998dc86b5ce..4626404be541 100644
--- a/drivers/firmware/arm_scmi/mailbox.c
+++ b/drivers/firmware/arm_scmi/mailbox.c
@@ -110,7 +110,7 @@ static int mailbox_chan_free(int id, void *p, void *data)
 	struct scmi_chan_info *cinfo = p;
 	struct scmi_mailbox *smbox = cinfo->transport_info;
 
-	if (!IS_ERR(smbox->chan)) {
+	if (smbox && !IS_ERR(smbox->chan)) {
 		mbox_free_channel(smbox->chan);
 		cinfo->transport_info = NULL;
 		smbox->chan = NULL;
@@ -181,7 +181,7 @@ mailbox_poll_done(struct scmi_chan_info *cinfo, struct scmi_xfer *xfer)
 	return shmem_poll_done(smbox->shmem, xfer);
 }
 
-static struct scmi_transport_ops scmi_mailbox_ops = {
+static const struct scmi_transport_ops scmi_mailbox_ops = {
 	.chan_available = mailbox_chan_available,
 	.chan_setup = mailbox_chan_setup,
 	.chan_free = mailbox_chan_free,
diff --git a/drivers/firmware/arm_scmi/notify.c b/drivers/firmware/arm_scmi/notify.c
index 4731daaacd19..ce336899d636 100644
--- a/drivers/firmware/arm_scmi/notify.c
+++ b/drivers/firmware/arm_scmi/notify.c
@@ -1403,15 +1403,21 @@ static void scmi_protocols_late_init(struct work_struct *work)
 				"finalized PENDING handler - key:%X\n",
 				hndl->key);
 			ret = scmi_event_handler_enable_events(hndl);
+			if (ret) {
+				dev_dbg(ni->handle->dev,
+					"purging INVALID handler - key:%X\n",
+					hndl->key);
+				scmi_put_active_handler(ni, hndl);
+			}
 		} else {
 			ret = scmi_valid_pending_handler(ni, hndl);
-		}
-		if (ret) {
-			dev_dbg(ni->handle->dev,
-				"purging PENDING handler - key:%X\n",
-				hndl->key);
-			/* this hndl can be only a pending one */
-			scmi_put_handler_unlocked(ni, hndl);
+			if (ret) {
+				dev_dbg(ni->handle->dev,
+					"purging PENDING handler - key:%X\n",
+					hndl->key);
+				/* this hndl can be only a pending one */
+				scmi_put_handler_unlocked(ni, hndl);
+			}
 		}
 	}
 	mutex_unlock(&ni->pending_mtx);
@@ -1421,7 +1427,7 @@ static void scmi_protocols_late_init(struct work_struct *work)
  * notify_ops are attached to the handle so that can be accessed
  * directly from an scmi_driver to register its own notifiers.
  */
-static struct scmi_notify_ops notify_ops = {
+static const struct scmi_notify_ops notify_ops = {
 	.register_event_notifier = scmi_register_notifier,
 	.unregister_event_notifier = scmi_unregister_notifier,
 };
@@ -1468,7 +1474,7 @@ int scmi_notification_init(struct scmi_handle *handle)
 	ni->gid = gid;
 	ni->handle = handle;
 
-	ni->notify_wq = alloc_workqueue("scmi_notify",
+	ni->notify_wq = alloc_workqueue(dev_name(handle->dev),
 					WQ_UNBOUND | WQ_FREEZABLE | WQ_SYSFS,
 					0);
 	if (!ni->notify_wq)
diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index 3e1e87012c95..82fb3babff72 100644
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/drivers/firmware/arm_scmi/perf.c
@@ -304,6 +304,8 @@ scmi_perf_describe_levels_get(const struct scmi_handle *handle, u32 domain,
 		}
 
 		tot_opp_cnt += num_returned;
+
+		scmi_reset_rx_to_maxsz(handle, t);
 		/*
 		 * check for both returned and remaining to avoid infinite
 		 * loop due to buggy firmware
@@ -748,7 +750,7 @@ static bool scmi_fast_switch_possible(const struct scmi_handle *handle,
 	return dom->fc_info && dom->fc_info->level_set_addr;
 }
 
-static struct scmi_perf_ops perf_ops = {
+static const struct scmi_perf_ops perf_ops = {
 	.limits_set = scmi_perf_limits_set,
 	.limits_get = scmi_perf_limits_get,
 	.level_set = scmi_perf_level_set,
@@ -890,9 +892,4 @@ static int scmi_perf_protocol_init(struct scmi_handle *handle)
 	return 0;
 }
 
-static int __init scmi_perf_init(void)
-{
-	return scmi_protocol_register(SCMI_PROTOCOL_PERF,
-				      &scmi_perf_protocol_init);
-}
-subsys_initcall(scmi_perf_init);
+DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(SCMI_PROTOCOL_PERF, perf)
diff --git a/drivers/firmware/arm_scmi/power.c b/drivers/firmware/arm_scmi/power.c
index 46f213644c49..1f37258e9bee 100644
--- a/drivers/firmware/arm_scmi/power.c
+++ b/drivers/firmware/arm_scmi/power.c
@@ -184,7 +184,7 @@ static char *scmi_power_name_get(const struct scmi_handle *handle, u32 domain)
 	return dom->name;
 }
 
-static struct scmi_power_ops power_ops = {
+static const struct scmi_power_ops power_ops = {
 	.num_domains_get = scmi_power_num_domains_get,
 	.name_get = scmi_power_name_get,
 	.state_set = scmi_power_state_set,
@@ -301,9 +301,4 @@ static int scmi_power_protocol_init(struct scmi_handle *handle)
 	return 0;
 }
 
-static int __init scmi_power_init(void)
-{
-	return scmi_protocol_register(SCMI_PROTOCOL_POWER,
-				      &scmi_power_protocol_init);
-}
-subsys_initcall(scmi_power_init);
+DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(SCMI_PROTOCOL_POWER, power)
diff --git a/drivers/firmware/arm_scmi/reset.c b/drivers/firmware/arm_scmi/reset.c
index 3691bafca057..a981a22cfe89 100644
--- a/drivers/firmware/arm_scmi/reset.c
+++ b/drivers/firmware/arm_scmi/reset.c
@@ -36,9 +36,7 @@ struct scmi_msg_reset_domain_reset {
 #define EXPLICIT_RESET_ASSERT	BIT(1)
 #define ASYNCHRONOUS_RESET	BIT(2)
 	__le32 reset_state;
-#define ARCH_RESET_TYPE		BIT(31)
-#define COLD_RESET_STATE	BIT(0)
-#define ARCH_COLD_RESET		(ARCH_RESET_TYPE | COLD_RESET_STATE)
+#define ARCH_COLD_RESET		0
 };
 
 struct scmi_msg_reset_notify {
@@ -194,7 +192,7 @@ scmi_reset_domain_deassert(const struct scmi_handle *handle, u32 domain)
 	return scmi_domain_reset(handle, domain, 0, ARCH_COLD_RESET);
 }
 
-static struct scmi_reset_ops reset_ops = {
+static const struct scmi_reset_ops reset_ops = {
 	.num_domains_get = scmi_reset_num_domains_get,
 	.name_get = scmi_reset_name_get,
 	.latency_get = scmi_reset_latency_get,
@@ -313,9 +311,4 @@ static int scmi_reset_protocol_init(struct scmi_handle *handle)
 	return 0;
 }
 
-static int __init scmi_reset_init(void)
-{
-	return scmi_protocol_register(SCMI_PROTOCOL_RESET,
-				      &scmi_reset_protocol_init);
-}
-subsys_initcall(scmi_reset_init);
+DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(SCMI_PROTOCOL_RESET, reset)
diff --git a/drivers/firmware/arm_scmi/sensors.c b/drivers/firmware/arm_scmi/sensors.c
index 1af0ad362e82..b4232d611033 100644
--- a/drivers/firmware/arm_scmi/sensors.c
+++ b/drivers/firmware/arm_scmi/sensors.c
@@ -166,6 +166,8 @@ static int scmi_sensor_description_get(const struct scmi_handle *handle,
 		}
 
 		desc_index += num_returned;
+
+		scmi_reset_rx_to_maxsz(handle, t);
 		/*
 		 * check for both returned and remaining to avoid infinite
 		 * loop due to buggy firmware
@@ -275,7 +277,7 @@ static int scmi_sensor_count_get(const struct scmi_handle *handle)
 	return si->num_sensors;
 }
 
-static struct scmi_sensor_ops sensor_ops = {
+static const struct scmi_sensor_ops sensor_ops = {
 	.count_get = scmi_sensor_count_get,
 	.info_get = scmi_sensor_info_get,
 	.trip_point_config = scmi_sensor_trip_point_config,
@@ -365,9 +367,4 @@ static int scmi_sensors_protocol_init(struct scmi_handle *handle)
 	return 0;
 }
 
-static int __init scmi_sensors_init(void)
-{
-	return scmi_protocol_register(SCMI_PROTOCOL_SENSOR,
-				      &scmi_sensors_protocol_init);
-}
-subsys_initcall(scmi_sensors_init);
+DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(SCMI_PROTOCOL_SENSOR, sensors)
diff --git a/drivers/firmware/arm_scmi/smc.c b/drivers/firmware/arm_scmi/smc.c
index a1537d123e38..82a82a5dc86a 100644
--- a/drivers/firmware/arm_scmi/smc.c
+++ b/drivers/firmware/arm_scmi/smc.c
@@ -137,7 +137,7 @@ smc_poll_done(struct scmi_chan_info *cinfo, struct scmi_xfer *xfer)
 	return shmem_poll_done(scmi_info->shmem, xfer);
 }
 
-static struct scmi_transport_ops scmi_smc_ops = {
+static const struct scmi_transport_ops scmi_smc_ops = {
 	.chan_available = smc_chan_available,
 	.chan_setup = smc_chan_setup,
 	.chan_free = smc_chan_free,
@@ -149,6 +149,6 @@ static struct scmi_transport_ops scmi_smc_ops = {
 const struct scmi_desc scmi_smc_desc = {
 	.ops = &scmi_smc_ops,
 	.max_rx_timeout_ms = 30,
-	.max_msg = 1,
+	.max_msg = 20,
 	.max_msg_size = 128,
 };
diff --git a/drivers/firmware/arm_scmi/system.c b/drivers/firmware/arm_scmi/system.c
new file mode 100644
index 000000000000..283e12d5f24b
--- /dev/null
+++ b/drivers/firmware/arm_scmi/system.c
@@ -0,0 +1,131 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * System Control and Management Interface (SCMI) System Power Protocol
+ *
+ * Copyright (C) 2020 ARM Ltd.
+ */
+
+#define pr_fmt(fmt) "SCMI Notifications SYSTEM - " fmt
+
+#include <linux/scmi_protocol.h>
+
+#include "common.h"
+#include "notify.h"
+
+#define SCMI_SYSTEM_NUM_SOURCES		1
+
+enum scmi_system_protocol_cmd {
+	SYSTEM_POWER_STATE_NOTIFY = 0x5,
+};
+
+struct scmi_system_power_state_notify {
+	__le32 notify_enable;
+};
+
+struct scmi_system_power_state_notifier_payld {
+	__le32 agent_id;
+	__le32 flags;
+	__le32 system_state;
+};
+
+struct scmi_system_info {
+	u32 version;
+};
+
+static int scmi_system_request_notify(const struct scmi_handle *handle,
+				      bool enable)
+{
+	int ret;
+	struct scmi_xfer *t;
+	struct scmi_system_power_state_notify *notify;
+
+	ret = scmi_xfer_get_init(handle, SYSTEM_POWER_STATE_NOTIFY,
+				 SCMI_PROTOCOL_SYSTEM, sizeof(*notify), 0, &t);
+	if (ret)
+		return ret;
+
+	notify = t->tx.buf;
+	notify->notify_enable = enable ? cpu_to_le32(BIT(0)) : 0;
+
+	ret = scmi_do_xfer(handle, t);
+
+	scmi_xfer_put(handle, t);
+	return ret;
+}
+
+static int scmi_system_set_notify_enabled(const struct scmi_handle *handle,
+					  u8 evt_id, u32 src_id, bool enable)
+{
+	int ret;
+
+	ret = scmi_system_request_notify(handle, enable);
+	if (ret)
+		pr_debug("FAIL_ENABLE - evt[%X] - ret:%d\n", evt_id, ret);
+
+	return ret;
+}
+
+static void *scmi_system_fill_custom_report(const struct scmi_handle *handle,
+					    u8 evt_id, ktime_t timestamp,
+					    const void *payld, size_t payld_sz,
+					    void *report, u32 *src_id)
+{
+	const struct scmi_system_power_state_notifier_payld *p = payld;
+	struct scmi_system_power_state_notifier_report *r = report;
+
+	if (evt_id != SCMI_EVENT_SYSTEM_POWER_STATE_NOTIFIER ||
+	    sizeof(*p) != payld_sz)
+		return NULL;
+
+	r->timestamp = timestamp;
+	r->agent_id = le32_to_cpu(p->agent_id);
+	r->flags = le32_to_cpu(p->flags);
+	r->system_state = le32_to_cpu(p->system_state);
+	*src_id = 0;
+
+	return r;
+}
+
+static const struct scmi_event system_events[] = {
+	{
+		.id = SCMI_EVENT_SYSTEM_POWER_STATE_NOTIFIER,
+		.max_payld_sz =
+			sizeof(struct scmi_system_power_state_notifier_payld),
+		.max_report_sz =
+			sizeof(struct scmi_system_power_state_notifier_report),
+	},
+};
+
+static const struct scmi_event_ops system_event_ops = {
+	.set_notify_enabled = scmi_system_set_notify_enabled,
+	.fill_custom_report = scmi_system_fill_custom_report,
+};
+
+static int scmi_system_protocol_init(struct scmi_handle *handle)
+{
+	u32 version;
+	struct scmi_system_info *pinfo;
+
+	scmi_version_get(handle, SCMI_PROTOCOL_SYSTEM, &version);
+
+	dev_dbg(handle->dev, "System Power Version %d.%d\n",
+		PROTOCOL_REV_MAJOR(version), PROTOCOL_REV_MINOR(version));
+
+	pinfo = devm_kzalloc(handle->dev, sizeof(*pinfo), GFP_KERNEL);
+	if (!pinfo)
+		return -ENOMEM;
+
+	scmi_register_protocol_events(handle,
+				      SCMI_PROTOCOL_SYSTEM, SCMI_PROTO_QUEUE_SZ,
+				      &system_event_ops,
+				      system_events,
+				      ARRAY_SIZE(system_events),
+				      SCMI_SYSTEM_NUM_SOURCES);
+
+	pinfo->version = version;
+	handle->system_priv = pinfo;
+
+	return 0;
+}
+
+DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(SCMI_PROTOCOL_SYSTEM, system)
diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c
index b4b9ce97f415..840754dcc6ca 100644
--- a/drivers/firmware/arm_sdei.c
+++ b/drivers/firmware/arm_sdei.c
@@ -78,11 +78,26 @@ struct sdei_crosscall_args {
 	int first_error;
 };
 
-#define CROSSCALL_INIT(arg, event)	(arg.event = event, \
-					 arg.first_error = 0, \
-					 atomic_set(&arg.errors, 0))
+#define CROSSCALL_INIT(arg, event)		\
+	do {					\
+		arg.event = event;		\
+		arg.first_error = 0;		\
+		atomic_set(&arg.errors, 0);	\
+	} while (0)
+
+static inline int sdei_do_local_call(smp_call_func_t fn,
+				     struct sdei_event *event)
+{
+	struct sdei_crosscall_args arg;
+
+	CROSSCALL_INIT(arg, event);
+	fn(&arg);
 
-static inline int sdei_do_cross_call(void *fn, struct sdei_event * event)
+	return arg.first_error;
+}
+
+static inline int sdei_do_cross_call(smp_call_func_t fn,
+				     struct sdei_event *event)
 {
 	struct sdei_crosscall_args arg;
 
@@ -114,26 +129,7 @@ static int sdei_to_linux_errno(unsigned long sdei_err)
 		return -ENOMEM;
 	}
 
-	/* Not an error value ... */
-	return sdei_err;
-}
-
-/*
- * If x0 is any of these values, then the call failed, use sdei_to_linux_errno()
- * to translate.
- */
-static int sdei_is_err(struct arm_smccc_res *res)
-{
-	switch (res->a0) {
-	case SDEI_NOT_SUPPORTED:
-	case SDEI_INVALID_PARAMETERS:
-	case SDEI_DENIED:
-	case SDEI_PENDING:
-	case SDEI_OUT_OF_RESOURCE:
-		return true;
-	}
-
-	return false;
+	return 0;
 }
 
 static int invoke_sdei_fn(unsigned long function_id, unsigned long arg0,
@@ -141,14 +137,13 @@ static int invoke_sdei_fn(unsigned long function_id, unsigned long arg0,
 			  unsigned long arg3, unsigned long arg4,
 			  u64 *result)
 {
-	int err = 0;
+	int err;
 	struct arm_smccc_res res;
 
 	if (sdei_firmware_call) {
 		sdei_firmware_call(function_id, arg0, arg1, arg2, arg3, arg4,
 				   &res);
-		if (sdei_is_err(&res))
-			err = sdei_to_linux_errno(res.a0);
+		err = sdei_to_linux_errno(res.a0);
 	} else {
 		/*
 		 * !sdei_firmware_call means we failed to probe or called
@@ -210,36 +205,34 @@ static struct sdei_event *sdei_event_create(u32 event_num,
 	lockdep_assert_held(&sdei_events_lock);
 
 	event = kzalloc(sizeof(*event), GFP_KERNEL);
-	if (!event)
-		return ERR_PTR(-ENOMEM);
+	if (!event) {
+		err = -ENOMEM;
+		goto fail;
+	}
 
 	INIT_LIST_HEAD(&event->list);
 	event->event_num = event_num;
 
 	err = sdei_api_event_get_info(event_num, SDEI_EVENT_INFO_EV_PRIORITY,
 				      &result);
-	if (err) {
-		kfree(event);
-		return ERR_PTR(err);
-	}
+	if (err)
+		goto fail;
 	event->priority = result;
 
 	err = sdei_api_event_get_info(event_num, SDEI_EVENT_INFO_EV_TYPE,
 				      &result);
-	if (err) {
-		kfree(event);
-		return ERR_PTR(err);
-	}
+	if (err)
+		goto fail;
 	event->type = result;
 
 	if (event->type == SDEI_EVENT_TYPE_SHARED) {
 		reg = kzalloc(sizeof(*reg), GFP_KERNEL);
 		if (!reg) {
-			kfree(event);
-			return ERR_PTR(-ENOMEM);
+			err = -ENOMEM;
+			goto fail;
 		}
 
-		reg->event_num = event_num;
+		reg->event_num = event->event_num;
 		reg->priority = event->priority;
 
 		reg->callback = cb;
@@ -251,8 +244,8 @@ static struct sdei_event *sdei_event_create(u32 event_num,
 
 		regs = alloc_percpu(struct sdei_registered_event);
 		if (!regs) {
-			kfree(event);
-			return ERR_PTR(-ENOMEM);
+			err = -ENOMEM;
+			goto fail;
 		}
 
 		for_each_possible_cpu(cpu) {
@@ -272,6 +265,10 @@ static struct sdei_event *sdei_event_create(u32 event_num,
 	spin_unlock(&sdei_list_lock);
 
 	return event;
+
+fail:
+	kfree(event);
+	return ERR_PTR(err);
 }
 
 static void sdei_event_destroy_llocked(struct sdei_event *event)
@@ -490,16 +487,6 @@ static void _local_event_unregister(void *data)
 	sdei_cross_call_return(arg, err);
 }
 
-static int _sdei_event_unregister(struct sdei_event *event)
-{
-	lockdep_assert_held(&sdei_events_lock);
-
-	if (event->type == SDEI_EVENT_TYPE_SHARED)
-		return sdei_api_event_unregister(event->event_num);
-
-	return sdei_do_cross_call(_local_event_unregister, event);
-}
-
 int sdei_event_unregister(u32 event_num)
 {
 	int err;
@@ -509,24 +496,27 @@ int sdei_event_unregister(u32 event_num)
 
 	mutex_lock(&sdei_events_lock);
 	event = sdei_event_find(event_num);
-	do {
-		if (!event) {
-			pr_warn("Event %u not registered\n", event_num);
-			err = -ENOENT;
-			break;
-		}
+	if (!event) {
+		pr_warn("Event %u not registered\n", event_num);
+		err = -ENOENT;
+		goto unlock;
+	}
 
-		spin_lock(&sdei_list_lock);
-		event->reregister = false;
-		event->reenable = false;
-		spin_unlock(&sdei_list_lock);
+	spin_lock(&sdei_list_lock);
+	event->reregister = false;
+	event->reenable = false;
+	spin_unlock(&sdei_list_lock);
 
-		err = _sdei_event_unregister(event);
-		if (err)
-			break;
+	if (event->type == SDEI_EVENT_TYPE_SHARED)
+		err = sdei_api_event_unregister(event->event_num);
+	else
+		err = sdei_do_cross_call(_local_event_unregister, event);
 
-		sdei_event_destroy(event);
-	} while (0);
+	if (err)
+		goto unlock;
+
+	sdei_event_destroy(event);
+unlock:
 	mutex_unlock(&sdei_events_lock);
 
 	return err;
@@ -547,7 +537,7 @@ static int sdei_unregister_shared(void)
 		if (event->type != SDEI_EVENT_TYPE_SHARED)
 			continue;
 
-		err = _sdei_event_unregister(event);
+		err = sdei_api_event_unregister(event->event_num);
 		if (err)
 			break;
 	}
@@ -581,25 +571,6 @@ static void _local_event_register(void *data)
 	sdei_cross_call_return(arg, err);
 }
 
-static int _sdei_event_register(struct sdei_event *event)
-{
-	int err;
-
-	lockdep_assert_held(&sdei_events_lock);
-
-	if (event->type == SDEI_EVENT_TYPE_SHARED)
-		return sdei_api_event_register(event->event_num,
-					       sdei_entry_point,
-					       event->registered,
-					       SDEI_EVENT_REGISTER_RM_ANY, 0);
-
-	err = sdei_do_cross_call(_local_event_register, event);
-	if (err)
-		sdei_do_cross_call(_local_event_unregister, event);
-
-	return err;
-}
-
 int sdei_event_register(u32 event_num, sdei_event_callback *cb, void *arg)
 {
 	int err;
@@ -608,63 +579,44 @@ int sdei_event_register(u32 event_num, sdei_event_callback *cb, void *arg)
 	WARN_ON(in_nmi());
 
 	mutex_lock(&sdei_events_lock);
-	do {
-		if (sdei_event_find(event_num)) {
-			pr_warn("Event %u already registered\n", event_num);
-			err = -EBUSY;
-			break;
-		}
-
-		event = sdei_event_create(event_num, cb, arg);
-		if (IS_ERR(event)) {
-			err = PTR_ERR(event);
-			pr_warn("Failed to create event %u: %d\n", event_num,
-				err);
-			break;
-		}
-
-		cpus_read_lock();
-		err = _sdei_event_register(event);
-		if (err) {
-			sdei_event_destroy(event);
-			pr_warn("Failed to register event %u: %d\n", event_num,
-				err);
-		} else {
-			spin_lock(&sdei_list_lock);
-			event->reregister = true;
-			spin_unlock(&sdei_list_lock);
-		}
-		cpus_read_unlock();
-	} while (0);
-	mutex_unlock(&sdei_events_lock);
-
-	return err;
-}
-
-static int sdei_reregister_event_llocked(struct sdei_event *event)
-{
-	int err;
-
-	lockdep_assert_held(&sdei_events_lock);
-	lockdep_assert_held(&sdei_list_lock);
+	if (sdei_event_find(event_num)) {
+		pr_warn("Event %u already registered\n", event_num);
+		err = -EBUSY;
+		goto unlock;
+	}
 
-	err = _sdei_event_register(event);
-	if (err) {
-		pr_err("Failed to re-register event %u\n", event->event_num);
-		sdei_event_destroy_llocked(event);
-		return err;
+	event = sdei_event_create(event_num, cb, arg);
+	if (IS_ERR(event)) {
+		err = PTR_ERR(event);
+		pr_warn("Failed to create event %u: %d\n", event_num, err);
+		goto unlock;
 	}
 
-	if (event->reenable) {
-		if (event->type == SDEI_EVENT_TYPE_SHARED)
-			err = sdei_api_event_enable(event->event_num);
-		else
-			err = sdei_do_cross_call(_local_event_enable, event);
+	cpus_read_lock();
+	if (event->type == SDEI_EVENT_TYPE_SHARED) {
+		err = sdei_api_event_register(event->event_num,
+					      sdei_entry_point,
+					      event->registered,
+					      SDEI_EVENT_REGISTER_RM_ANY, 0);
+	} else {
+		err = sdei_do_cross_call(_local_event_register, event);
+		if (err)
+			sdei_do_cross_call(_local_event_unregister, event);
 	}
 
-	if (err)
-		pr_err("Failed to re-enable event %u\n", event->event_num);
+	if (err) {
+		sdei_event_destroy(event);
+		pr_warn("Failed to register event %u: %d\n", event_num, err);
+		goto cpu_unlock;
+	}
 
+	spin_lock(&sdei_list_lock);
+	event->reregister = true;
+	spin_unlock(&sdei_list_lock);
+cpu_unlock:
+	cpus_read_unlock();
+unlock:
+	mutex_unlock(&sdei_events_lock);
 	return err;
 }
 
@@ -680,9 +632,24 @@ static int sdei_reregister_shared(void)
 			continue;
 
 		if (event->reregister) {
-			err = sdei_reregister_event_llocked(event);
-			if (err)
+			err = sdei_api_event_register(event->event_num,
+					sdei_entry_point, event->registered,
+					SDEI_EVENT_REGISTER_RM_ANY, 0);
+			if (err) {
+				pr_err("Failed to re-register event %u\n",
+				       event->event_num);
+				sdei_event_destroy_llocked(event);
 				break;
+			}
+		}
+
+		if (event->reenable) {
+			err = sdei_api_event_enable(event->event_num);
+			if (err) {
+				pr_err("Failed to re-enable event %u\n",
+				       event->event_num);
+				break;
+			}
 		}
 	}
 	spin_unlock(&sdei_list_lock);
@@ -694,7 +661,7 @@ static int sdei_reregister_shared(void)
 static int sdei_cpuhp_down(unsigned int cpu)
 {
 	struct sdei_event *event;
-	struct sdei_crosscall_args arg;
+	int err;
 
 	/* un-register private events */
 	spin_lock(&sdei_list_lock);
@@ -702,12 +669,11 @@ static int sdei_cpuhp_down(unsigned int cpu)
 		if (event->type == SDEI_EVENT_TYPE_SHARED)
 			continue;
 
-		CROSSCALL_INIT(arg, event);
-		/* call the cross-call function locally... */
-		_local_event_unregister(&arg);
-		if (arg.first_error)
+		err = sdei_do_local_call(_local_event_unregister, event);
+		if (err) {
 			pr_err("Failed to unregister event %u: %d\n",
-			       event->event_num, arg.first_error);
+			       event->event_num, err);
+		}
 	}
 	spin_unlock(&sdei_list_lock);
 
@@ -717,7 +683,7 @@ static int sdei_cpuhp_down(unsigned int cpu)
 static int sdei_cpuhp_up(unsigned int cpu)
 {
 	struct sdei_event *event;
-	struct sdei_crosscall_args arg;
+	int err;
 
 	/* re-register/enable private events */
 	spin_lock(&sdei_list_lock);
@@ -726,20 +692,19 @@ static int sdei_cpuhp_up(unsigned int cpu)
 			continue;
 
 		if (event->reregister) {
-			CROSSCALL_INIT(arg, event);
-			/* call the cross-call function locally... */
-			_local_event_register(&arg);
-			if (arg.first_error)
+			err = sdei_do_local_call(_local_event_register, event);
+			if (err) {
 				pr_err("Failed to re-register event %u: %d\n",
-				       event->event_num, arg.first_error);
+				       event->event_num, err);
+			}
 		}
 
 		if (event->reenable) {
-			CROSSCALL_INIT(arg, event);
-			_local_event_enable(&arg);
-			if (arg.first_error)
+			err = sdei_do_local_call(_local_event_enable, event);
+			if (err) {
 				pr_err("Failed to re-enable event %u: %d\n",
-				       event->event_num, arg.first_error);
+				       event->event_num, err);
+			}
 		}
 	}
 	spin_unlock(&sdei_list_lock);
@@ -976,7 +941,7 @@ static int sdei_get_conduit(struct platform_device *pdev)
 		}
 
 		pr_warn("invalid \"method\" property: %s\n", method);
-	} else if (IS_ENABLED(CONFIG_ACPI) && !acpi_disabled) {
+	} else if (!acpi_disabled) {
 		if (acpi_psci_use_hvc()) {
 			sdei_firmware_call = &sdei_smccc_hvc;
 			return SMCCC_CONDUIT_HVC;
@@ -1000,8 +965,6 @@ static int sdei_probe(struct platform_device *pdev)
 		return 0;
 
 	err = sdei_api_get_version(&ver);
-	if (err == -EOPNOTSUPP)
-		pr_err("advertised but not implemented in platform firmware\n");
 	if (err) {
 		pr_err("Failed to get SDEI version: %d\n", err);
 		sdei_mark_interface_broken();
@@ -1099,16 +1062,20 @@ static bool __init sdei_present_acpi(void)
 
 static int __init sdei_init(void)
 {
-	int ret = platform_driver_register(&sdei_driver);
-
-	if (!ret && sdei_present_acpi()) {
-		struct platform_device *pdev;
-
-		pdev = platform_device_register_simple(sdei_driver.driver.name,
-						       0, NULL, 0);
-		if (IS_ERR(pdev))
-			pr_info("Failed to register ACPI:SDEI platform device %ld\n",
-				PTR_ERR(pdev));
+	struct platform_device *pdev;
+	int ret;
+
+	ret = platform_driver_register(&sdei_driver);
+	if (ret || !sdei_present_acpi())
+		return ret;
+
+	pdev = platform_device_register_simple(sdei_driver.driver.name,
+					       0, NULL, 0);
+	if (IS_ERR(pdev)) {
+		ret = PTR_ERR(pdev);
+		platform_driver_unregister(&sdei_driver);
+		pr_info("Failed to register ACPI:SDEI platform device %d\n",
+			ret);
 	}
 
 	return ret;
diff --git a/drivers/firmware/broadcom/bcm47xx_sprom.c b/drivers/firmware/broadcom/bcm47xx_sprom.c
index 4787f86c8ac1..14fbcd11657c 100644
--- a/drivers/firmware/broadcom/bcm47xx_sprom.c
+++ b/drivers/firmware/broadcom/bcm47xx_sprom.c
@@ -27,6 +27,7 @@
  */
 
 #include <linux/bcm47xx_nvram.h>
+#include <linux/bcm47xx_sprom.h>
 #include <linux/bcma/bcma.h>
 #include <linux/etherdevice.h>
 #include <linux/if_ether.h>
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 5066d1f1d687..d51ca0428bb8 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -21,7 +21,7 @@ EXPORT_SYMBOL_GPL(dmi_kobj);
 /*
  * DMI stands for "Desktop Management Interface".  It is part
  * of and an antecedent to, SMBIOS, which stands for System
- * Management BIOS.  See further: http://www.dmtf.org/standards
+ * Management BIOS.  See further: https://www.dmtf.org/standards
  */
 static const char dmi_empty_string[] = "";
 
diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig
index 3939699e62fe..36ec1f718893 100644
--- a/drivers/firmware/efi/Kconfig
+++ b/drivers/firmware/efi/Kconfig
@@ -4,20 +4,15 @@ menu "EFI (Extensible Firmware Interface) Support"
 
 config EFI_VARS
 	tristate "EFI Variable Support via sysfs"
-	depends on EFI
+	depends on EFI && (X86 || IA64)
 	default n
 	help
 	  If you say Y here, you are able to get EFI (Extensible Firmware
 	  Interface) variable information via sysfs.  You may read,
 	  write, create, and destroy EFI variables through this interface.
-
-	  Note that using this driver in concert with efibootmgr requires
-	  at least test release version 0.5.0-test3 or later, which is
-	  available from:
-	  <http://linux.dell.com/efibootmgr/testing/efibootmgr-0.5.0-test3.tar.gz>
-
-	  Subsequent efibootmgr releases may be found at:
-	  <http://github.com/vathpela/efibootmgr>
+	  Note that this driver is only retained for compatibility with
+	  legacy users: new users should use the efivarfs filesystem
+	  instead.
 
 config EFI_ESRT
 	bool
@@ -26,7 +21,7 @@ config EFI_ESRT
 
 config EFI_VARS_PSTORE
 	tristate "Register efivars backend for pstore"
-	depends on EFI_VARS && PSTORE
+	depends on PSTORE
 	default y
 	help
 	  Say Y here to enable use efivars as a backend to pstore. This
@@ -111,7 +106,7 @@ config EFI_GENERIC_STUB
 
 config EFI_ARMSTUB_DTB_LOADER
 	bool "Enable the DTB loader"
-	depends on EFI_GENERIC_STUB
+	depends on EFI_GENERIC_STUB && !RISCV
 	default y
 	help
 	  Select this config option to add support for the dtb= command
@@ -128,6 +123,7 @@ config EFI_GENERIC_STUB_INITRD_CMDLINE_LOADER
 	bool "Enable the command line initrd loader" if !X86
 	depends on EFI_STUB && (EFI_GENERIC_STUB || X86)
 	default y
+	depends on !RISCV
 	help
 	  Select this config option to add support for the initrd= command
 	  line parameter, allowing an initrd that resides on the same volume
@@ -137,7 +133,6 @@ config EFI_GENERIC_STUB_INITRD_CMDLINE_LOADER
 
 config EFI_BOOTLOADER_CONTROL
 	tristate "EFI Bootloader Control"
-	depends on EFI_VARS
 	default n
 	help
 	  This module installs a reboot hook, such that if reboot() is
@@ -281,7 +276,7 @@ config EFI_EARLYCON
 
 config EFI_CUSTOM_SSDT_OVERLAYS
 	bool "Load custom ACPI SSDT overlay from an EFI variable"
-	depends on EFI_VARS && ACPI
+	depends on EFI && ACPI
 	default ACPI_TABLE_UPGRADE
 	help
 	  Allow loading of an ACPI SSDT overlay from an EFI variable specified
diff --git a/drivers/firmware/efi/Makefile b/drivers/firmware/efi/Makefile
index 7a216984552b..d6ca2da19339 100644
--- a/drivers/firmware/efi/Makefile
+++ b/drivers/firmware/efi/Makefile
@@ -28,13 +28,16 @@ obj-$(CONFIG_EFI_DEV_PATH_PARSER)	+= dev-path-parser.o
 obj-$(CONFIG_APPLE_PROPERTIES)		+= apple-properties.o
 obj-$(CONFIG_EFI_RCI2_TABLE)		+= rci2-table.o
 obj-$(CONFIG_EFI_EMBEDDED_FIRMWARE)	+= embedded-firmware.o
+obj-$(CONFIG_LOAD_UEFI_KEYS)		+= mokvar-table.o
 
 fake_map-y				+= fake_mem.o
 fake_map-$(CONFIG_X86)			+= x86_fake_mem.o
 
-arm-obj-$(CONFIG_EFI)			:= arm-init.o arm-runtime.o
+arm-obj-$(CONFIG_EFI)			:= efi-init.o arm-runtime.o
 obj-$(CONFIG_ARM)			+= $(arm-obj-y)
 obj-$(CONFIG_ARM64)			+= $(arm-obj-y)
+riscv-obj-$(CONFIG_EFI)			:= efi-init.o riscv-runtime.o
+obj-$(CONFIG_RISCV)			+= $(riscv-obj-y)
 obj-$(CONFIG_EFI_CAPSULE_LOADER)	+= capsule-loader.o
 obj-$(CONFIG_EFI_EARLYCON)		+= earlycon.o
 obj-$(CONFIG_UEFI_CPER_ARM)		+= cper-arm.o
diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
index f564e15fbc7e..e15d484b6a5a 100644
--- a/drivers/firmware/efi/cper.c
+++ b/drivers/firmware/efi/cper.c
@@ -232,10 +232,20 @@ static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg)
 		n += scnprintf(msg + n, len - n, "rank: %d ", mem->rank);
 	if (mem->validation_bits & CPER_MEM_VALID_BANK)
 		n += scnprintf(msg + n, len - n, "bank: %d ", mem->bank);
+	if (mem->validation_bits & CPER_MEM_VALID_BANK_GROUP)
+		n += scnprintf(msg + n, len - n, "bank_group: %d ",
+			       mem->bank >> CPER_MEM_BANK_GROUP_SHIFT);
+	if (mem->validation_bits & CPER_MEM_VALID_BANK_ADDRESS)
+		n += scnprintf(msg + n, len - n, "bank_address: %d ",
+			       mem->bank & CPER_MEM_BANK_ADDRESS_MASK);
 	if (mem->validation_bits & CPER_MEM_VALID_DEVICE)
 		n += scnprintf(msg + n, len - n, "device: %d ", mem->device);
-	if (mem->validation_bits & CPER_MEM_VALID_ROW)
-		n += scnprintf(msg + n, len - n, "row: %d ", mem->row);
+	if (mem->validation_bits & (CPER_MEM_VALID_ROW | CPER_MEM_VALID_ROW_EXT)) {
+		u32 row = mem->row;
+
+		row |= cper_get_mem_extension(mem->validation_bits, mem->extended);
+		n += scnprintf(msg + n, len - n, "row: %d ", row);
+	}
 	if (mem->validation_bits & CPER_MEM_VALID_COLUMN)
 		n += scnprintf(msg + n, len - n, "column: %d ", mem->column);
 	if (mem->validation_bits & CPER_MEM_VALID_BIT_POSITION)
@@ -250,6 +260,9 @@ static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg)
 	if (mem->validation_bits & CPER_MEM_VALID_TARGET_ID)
 		scnprintf(msg + n, len - n, "target_id: 0x%016llx ",
 			  mem->target_id);
+	if (mem->validation_bits & CPER_MEM_VALID_CHIP_ID)
+		scnprintf(msg + n, len - n, "chip_id: %d ",
+			  mem->extended >> CPER_MEM_CHIP_ID_SHIFT);
 
 	msg[n] = '\0';
 	return n;
@@ -292,6 +305,7 @@ void cper_mem_err_pack(const struct cper_sec_mem_err *mem,
 	cmem->requestor_id = mem->requestor_id;
 	cmem->responder_id = mem->responder_id;
 	cmem->target_id = mem->target_id;
+	cmem->extended = mem->extended;
 	cmem->rank = mem->rank;
 	cmem->mem_array_handle = mem->mem_array_handle;
 	cmem->mem_dev_handle = mem->mem_dev_handle;
diff --git a/drivers/firmware/efi/arm-init.c b/drivers/firmware/efi/efi-init.c
index 71c445d20258..f55a92ff12c0 100644
--- a/drivers/firmware/efi/arm-init.c
+++ b/drivers/firmware/efi/efi-init.c
@@ -236,6 +236,7 @@ void __init efi_init(void)
 
 	reserve_regions();
 	efi_esrt_init();
+	efi_mokvar_table_init();
 
 	memblock_reserve(data.phys_map & PAGE_MASK,
 			 PAGE_ALIGN(data.size + (data.phys_map & ~PAGE_MASK)));
diff --git a/drivers/firmware/efi/efi-pstore.c b/drivers/firmware/efi/efi-pstore.c
index feb7fe6f2da7..0ef086e43090 100644
--- a/drivers/firmware/efi/efi-pstore.c
+++ b/drivers/firmware/efi/efi-pstore.c
@@ -8,6 +8,8 @@
 
 #define DUMP_NAME_LEN 66
 
+#define EFIVARS_DATA_SIZE_MAX 1024
+
 static bool efivars_pstore_disable =
 	IS_ENABLED(CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE);
 
@@ -18,6 +20,9 @@ module_param_named(pstore_disable, efivars_pstore_disable, bool, 0644);
 	 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
 	 EFI_VARIABLE_RUNTIME_ACCESS)
 
+static LIST_HEAD(efi_pstore_list);
+static DECLARE_WORK(efivar_work, NULL);
+
 static int efi_pstore_open(struct pstore_info *psi)
 {
 	psi->data = NULL;
@@ -126,7 +131,7 @@ static inline int __efi_pstore_scan_sysfs_exit(struct efivar_entry *entry,
 	if (entry->deleting) {
 		list_del(&entry->list);
 		efivar_entry_iter_end();
-		efivar_unregister(entry);
+		kfree(entry);
 		if (efivar_entry_iter_begin())
 			return -EINTR;
 	} else if (turn_off_scanning)
@@ -169,7 +174,7 @@ static int efi_pstore_sysfs_entry_iter(struct pstore_record *record)
 {
 	struct efivar_entry **pos = (struct efivar_entry **)&record->psi->data;
 	struct efivar_entry *entry, *n;
-	struct list_head *head = &efivar_sysfs_list;
+	struct list_head *head = &efi_pstore_list;
 	int size = 0;
 	int ret;
 
@@ -263,8 +268,9 @@ static int efi_pstore_write(struct pstore_record *record)
 	ret = efivar_entry_set_safe(efi_name, vendor, PSTORE_EFI_ATTRIBUTES,
 			      preemptible(), record->size, record->psi->buf);
 
-	if (record->reason == KMSG_DUMP_OOPS)
-		efivar_run_worker();
+	if (record->reason == KMSG_DUMP_OOPS && try_module_get(THIS_MODULE))
+		if (!schedule_work(&efivar_work))
+			module_put(THIS_MODULE);
 
 	return ret;
 };
@@ -314,12 +320,12 @@ static int efi_pstore_erase_name(const char *name)
 	if (efivar_entry_iter_begin())
 		return -EINTR;
 
-	found = __efivar_entry_iter(efi_pstore_erase_func, &efivar_sysfs_list,
+	found = __efivar_entry_iter(efi_pstore_erase_func, &efi_pstore_list,
 				    efi_name, &entry);
 	efivar_entry_iter_end();
 
 	if (found && !entry->scanning)
-		efivar_unregister(entry);
+		kfree(entry);
 
 	return found ? 0 : -ENOENT;
 }
@@ -354,14 +360,77 @@ static struct pstore_info efi_pstore_info = {
 	.erase		= efi_pstore_erase,
 };
 
+static int efi_pstore_callback(efi_char16_t *name, efi_guid_t vendor,
+			       unsigned long name_size, void *data)
+{
+	struct efivar_entry *entry;
+	int ret;
+
+	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+	if (!entry)
+		return -ENOMEM;
+
+	memcpy(entry->var.VariableName, name, name_size);
+	entry->var.VendorGuid = vendor;
+
+	ret = efivar_entry_add(entry, &efi_pstore_list);
+	if (ret)
+		kfree(entry);
+
+	return ret;
+}
+
+static int efi_pstore_update_entry(efi_char16_t *name, efi_guid_t vendor,
+				   unsigned long name_size, void *data)
+{
+	struct efivar_entry *entry = data;
+
+	if (efivar_entry_find(name, vendor, &efi_pstore_list, false))
+		return 0;
+
+	memcpy(entry->var.VariableName, name, name_size);
+	memcpy(&(entry->var.VendorGuid), &vendor, sizeof(efi_guid_t));
+
+	return 1;
+}
+
+static void efi_pstore_update_entries(struct work_struct *work)
+{
+	struct efivar_entry *entry;
+	int err;
+
+	/* Add new sysfs entries */
+	while (1) {
+		entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+		if (!entry)
+			return;
+
+		err = efivar_init(efi_pstore_update_entry, entry,
+				  false, &efi_pstore_list);
+		if (!err)
+			break;
+
+		efivar_entry_add(entry, &efi_pstore_list);
+	}
+
+	kfree(entry);
+	module_put(THIS_MODULE);
+}
+
 static __init int efivars_pstore_init(void)
 {
+	int ret;
+
 	if (!efivars_kobject() || !efivar_supports_writes())
 		return 0;
 
 	if (efivars_pstore_disable)
 		return 0;
 
+	ret = efivar_init(efi_pstore_callback, NULL, true, &efi_pstore_list);
+	if (ret)
+		return ret;
+
 	efi_pstore_info.buf = kmalloc(4096, GFP_KERNEL);
 	if (!efi_pstore_info.buf)
 		return -ENOMEM;
@@ -374,6 +443,8 @@ static __init int efivars_pstore_init(void)
 		efi_pstore_info.bufsize = 0;
 	}
 
+	INIT_WORK(&efivar_work, efi_pstore_update_entries);
+
 	return 0;
 }
 
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index fdd1db025dbf..5e5480a0a32d 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -43,6 +43,9 @@ struct efi __read_mostly efi = {
 	.esrt			= EFI_INVALID_TABLE_ADDR,
 	.tpm_log		= EFI_INVALID_TABLE_ADDR,
 	.tpm_final_log		= EFI_INVALID_TABLE_ADDR,
+#ifdef CONFIG_LOAD_UEFI_KEYS
+	.mokvar_table		= EFI_INVALID_TABLE_ADDR,
+#endif
 };
 EXPORT_SYMBOL(efi);
 
@@ -381,6 +384,7 @@ static int __init efisubsys_init(void)
 	efi_kobj = kobject_create_and_add("efi", firmware_kobj);
 	if (!efi_kobj) {
 		pr_err("efi: Firmware registration failed.\n");
+		destroy_workqueue(efi_rts_wq);
 		return -ENOMEM;
 	}
 
@@ -424,6 +428,7 @@ err_unregister:
 		generic_ops_unregister();
 err_put:
 	kobject_put(efi_kobj);
+	destroy_workqueue(efi_rts_wq);
 	return error;
 }
 
@@ -517,6 +522,9 @@ static const efi_config_table_type_t common_tables[] __initconst = {
 #ifdef CONFIG_EFI_RCI2_TABLE
 	{DELLEMC_EFI_RCI2_TABLE_GUID,		&rci2_table_phys			},
 #endif
+#ifdef CONFIG_LOAD_UEFI_KEYS
+	{LINUX_EFI_MOK_VARIABLE_TABLE_GUID,	&efi.mokvar_table,	"MOKvar"	},
+#endif
 	{},
 };
 
@@ -712,7 +720,7 @@ void __init efi_systab_report_header(const efi_table_hdr_t *systab_hdr,
 		vendor);
 }
 
-static __initdata char memory_type_name[][20] = {
+static __initdata char memory_type_name[][13] = {
 	"Reserved",
 	"Loader Code",
 	"Loader Data",
@@ -720,14 +728,14 @@ static __initdata char memory_type_name[][20] = {
 	"Boot Data",
 	"Runtime Code",
 	"Runtime Data",
-	"Conventional Memory",
-	"Unusable Memory",
-	"ACPI Reclaim Memory",
-	"ACPI Memory NVS",
-	"Memory Mapped I/O",
-	"MMIO Port Space",
+	"Conventional",
+	"Unusable",
+	"ACPI Reclaim",
+	"ACPI Mem NVS",
+	"MMIO",
+	"MMIO Port",
 	"PAL Code",
-	"Persistent Memory",
+	"Persistent",
 };
 
 char * __init efi_md_typeattr_format(char *buf, size_t size,
@@ -754,26 +762,27 @@ char * __init efi_md_typeattr_format(char *buf, size_t size,
 	if (attr & ~(EFI_MEMORY_UC | EFI_MEMORY_WC | EFI_MEMORY_WT |
 		     EFI_MEMORY_WB | EFI_MEMORY_UCE | EFI_MEMORY_RO |
 		     EFI_MEMORY_WP | EFI_MEMORY_RP | EFI_MEMORY_XP |
-		     EFI_MEMORY_NV | EFI_MEMORY_SP |
+		     EFI_MEMORY_NV | EFI_MEMORY_SP | EFI_MEMORY_CPU_CRYPTO |
 		     EFI_MEMORY_RUNTIME | EFI_MEMORY_MORE_RELIABLE))
 		snprintf(pos, size, "|attr=0x%016llx]",
 			 (unsigned long long)attr);
 	else
 		snprintf(pos, size,
-			 "|%3s|%2s|%2s|%2s|%2s|%2s|%2s|%2s|%3s|%2s|%2s|%2s|%2s]",
-			 attr & EFI_MEMORY_RUNTIME ? "RUN" : "",
-			 attr & EFI_MEMORY_MORE_RELIABLE ? "MR" : "",
-			 attr & EFI_MEMORY_SP      ? "SP"  : "",
-			 attr & EFI_MEMORY_NV      ? "NV"  : "",
-			 attr & EFI_MEMORY_XP      ? "XP"  : "",
-			 attr & EFI_MEMORY_RP      ? "RP"  : "",
-			 attr & EFI_MEMORY_WP      ? "WP"  : "",
-			 attr & EFI_MEMORY_RO      ? "RO"  : "",
-			 attr & EFI_MEMORY_UCE     ? "UCE" : "",
-			 attr & EFI_MEMORY_WB      ? "WB"  : "",
-			 attr & EFI_MEMORY_WT      ? "WT"  : "",
-			 attr & EFI_MEMORY_WC      ? "WC"  : "",
-			 attr & EFI_MEMORY_UC      ? "UC"  : "");
+			 "|%3s|%2s|%2s|%2s|%2s|%2s|%2s|%2s|%2s|%3s|%2s|%2s|%2s|%2s]",
+			 attr & EFI_MEMORY_RUNTIME		? "RUN" : "",
+			 attr & EFI_MEMORY_MORE_RELIABLE	? "MR"  : "",
+			 attr & EFI_MEMORY_CPU_CRYPTO   	? "CC"  : "",
+			 attr & EFI_MEMORY_SP			? "SP"  : "",
+			 attr & EFI_MEMORY_NV			? "NV"  : "",
+			 attr & EFI_MEMORY_XP			? "XP"  : "",
+			 attr & EFI_MEMORY_RP			? "RP"  : "",
+			 attr & EFI_MEMORY_WP			? "WP"  : "",
+			 attr & EFI_MEMORY_RO			? "RO"  : "",
+			 attr & EFI_MEMORY_UCE			? "UCE" : "",
+			 attr & EFI_MEMORY_WB			? "WB"  : "",
+			 attr & EFI_MEMORY_WT			? "WT"  : "",
+			 attr & EFI_MEMORY_WC			? "WC"  : "",
+			 attr & EFI_MEMORY_UC			? "UC"  : "");
 	return buf;
 }
 
diff --git a/drivers/firmware/efi/efibc.c b/drivers/firmware/efi/efibc.c
index 35dccc88ac0a..15a47539dc56 100644
--- a/drivers/firmware/efi/efibc.c
+++ b/drivers/firmware/efi/efibc.c
@@ -84,7 +84,7 @@ static int __init efibc_init(void)
 {
 	int ret;
 
-	if (!efi_enabled(EFI_RUNTIME_SERVICES))
+	if (!efivars_kobject() || !efivar_supports_writes())
 		return -ENODEV;
 
 	ret = register_reboot_notifier(&efibc_reboot_notifier);
diff --git a/drivers/firmware/efi/efivars.c b/drivers/firmware/efi/efivars.c
index dcea137142b3..e6b16b3a17a8 100644
--- a/drivers/firmware/efi/efivars.c
+++ b/drivers/firmware/efi/efivars.c
@@ -22,10 +22,8 @@ MODULE_AUTHOR("Matt Domsch <Matt_Domsch@Dell.com>");
 MODULE_DESCRIPTION("sysfs interface to EFI Variables");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(EFIVARS_VERSION);
-MODULE_ALIAS("platform:efivars");
 
-LIST_HEAD(efivar_sysfs_list);
-EXPORT_SYMBOL_GPL(efivar_sysfs_list);
+static LIST_HEAD(efivar_sysfs_list);
 
 static struct kset *efivars_kset;
 
@@ -591,42 +589,6 @@ out_free:
 	return error;
 }
 
-static int efivar_update_sysfs_entry(efi_char16_t *name, efi_guid_t vendor,
-				     unsigned long name_size, void *data)
-{
-	struct efivar_entry *entry = data;
-
-	if (efivar_entry_find(name, vendor, &efivar_sysfs_list, false))
-		return 0;
-
-	memcpy(entry->var.VariableName, name, name_size);
-	memcpy(&(entry->var.VendorGuid), &vendor, sizeof(efi_guid_t));
-
-	return 1;
-}
-
-static void efivar_update_sysfs_entries(struct work_struct *work)
-{
-	struct efivar_entry *entry;
-	int err;
-
-	/* Add new sysfs entries */
-	while (1) {
-		entry = kzalloc(sizeof(*entry), GFP_KERNEL);
-		if (!entry)
-			return;
-
-		err = efivar_init(efivar_update_sysfs_entry, entry,
-				  false, &efivar_sysfs_list);
-		if (!err)
-			break;
-
-		efivar_create_sysfs_entry(entry);
-	}
-
-	kfree(entry);
-}
-
 static int efivars_sysfs_callback(efi_char16_t *name, efi_guid_t vendor,
 				  unsigned long name_size, void *data)
 {
@@ -675,7 +637,7 @@ static void efivars_sysfs_exit(void)
 	kset_unregister(efivars_kset);
 }
 
-int efivars_sysfs_init(void)
+static int efivars_sysfs_init(void)
 {
 	struct kobject *parent_kobj = efivars_kobject();
 	int error = 0;
@@ -701,11 +663,8 @@ int efivars_sysfs_init(void)
 		return error;
 	}
 
-	INIT_WORK(&efivar_work, efivar_update_sysfs_entries);
-
 	return 0;
 }
-EXPORT_SYMBOL_GPL(efivars_sysfs_init);
 
 module_init(efivars_sysfs_init);
 module_exit(efivars_sysfs_exit);
diff --git a/drivers/firmware/efi/embedded-firmware.c b/drivers/firmware/efi/embedded-firmware.c
index e97a9c9d010c..21ae0c48232a 100644
--- a/drivers/firmware/efi/embedded-firmware.c
+++ b/drivers/firmware/efi/embedded-firmware.c
@@ -16,9 +16,9 @@
 
 /* Exported for use by lib/test_firmware.c only */
 LIST_HEAD(efi_embedded_fw_list);
-EXPORT_SYMBOL_GPL(efi_embedded_fw_list);
-
-static bool checked_for_fw;
+EXPORT_SYMBOL_NS_GPL(efi_embedded_fw_list, TEST_FIRMWARE);
+bool efi_embedded_fw_checked;
+EXPORT_SYMBOL_NS_GPL(efi_embedded_fw_checked, TEST_FIRMWARE);
 
 static const struct dmi_system_id * const embedded_fw_table[] = {
 #ifdef CONFIG_TOUCHSCREEN_DMI
@@ -116,14 +116,14 @@ void __init efi_check_for_embedded_firmwares(void)
 		}
 	}
 
-	checked_for_fw = true;
+	efi_embedded_fw_checked = true;
 }
 
 int efi_get_embedded_fw(const char *name, const u8 **data, size_t *size)
 {
 	struct efi_embedded_fw *iter, *fw = NULL;
 
-	if (!checked_for_fw) {
+	if (!efi_embedded_fw_checked) {
 		pr_warn("Warning %s called while we did not check for embedded fw\n",
 			__func__);
 		return -ENOENT;
diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index 296b18fbd7a2..8a94388e38b3 100644
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -18,15 +18,18 @@ cflags-$(CONFIG_X86)		+= -m$(BITS) -D__KERNEL__ \
 # arm64 uses the full KBUILD_CFLAGS so it's necessary to explicitly
 # disable the stackleak plugin
 cflags-$(CONFIG_ARM64)		:= $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) \
-				   -fpie $(DISABLE_STACKLEAK_PLUGIN)
+				   -fpie $(DISABLE_STACKLEAK_PLUGIN) \
+				   $(call cc-option,-mbranch-protection=none)
 cflags-$(CONFIG_ARM)		:= $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) \
 				   -fno-builtin -fpic \
 				   $(call cc-option,-mno-single-pic-base)
+cflags-$(CONFIG_RISCV)		:= $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) \
+				   -fpic
 
 cflags-$(CONFIG_EFI_GENERIC_STUB) += -I$(srctree)/scripts/dtc/libfdt
 
 KBUILD_CFLAGS			:= $(cflags-y) -Os -DDISABLE_BRANCH_PROFILING \
-				   -include $(srctree)/drivers/firmware/efi/libstub/hidden.h \
+				   -include $(srctree)/include/linux/hidden.h \
 				   -D__NO_FORTIFY \
 				   -ffreestanding \
 				   -fno-stack-protector \
@@ -63,8 +66,14 @@ lib-$(CONFIG_EFI_GENERIC_STUB)	+= efi-stub.o fdt.o string.o \
 lib-$(CONFIG_ARM)		+= arm32-stub.o
 lib-$(CONFIG_ARM64)		+= arm64-stub.o
 lib-$(CONFIG_X86)		+= x86-stub.o
+lib-$(CONFIG_RISCV)		+= riscv-stub.o
 CFLAGS_arm32-stub.o		:= -DTEXT_OFFSET=$(TEXT_OFFSET)
-CFLAGS_arm64-stub.o		:= -DTEXT_OFFSET=$(TEXT_OFFSET)
+
+# 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
+STUBCOPY_FLAGS-y		+= --remove-section=.note.gnu.property
 
 #
 # For x86, bootloaders like systemd-boot or grub-efi do not zero-initialize the
@@ -106,6 +115,13 @@ STUBCOPY_FLAGS-$(CONFIG_ARM64)	+= --prefix-alloc-sections=.init \
 				   --prefix-symbols=__efistub_
 STUBCOPY_RELOC-$(CONFIG_ARM64)	:= R_AARCH64_ABS
 
+# For RISC-V, we don't need anything special other than arm64. Keep all the
+# symbols in .init section and make sure that no absolute symbols references
+# doesn't exist.
+STUBCOPY_FLAGS-$(CONFIG_RISCV)	+= --prefix-alloc-sections=.init \
+				   --prefix-symbols=__efistub_
+STUBCOPY_RELOC-$(CONFIG_RISCV)	:= R_RISCV_HI20
+
 $(obj)/%.stub.o: $(obj)/%.o FORCE
 	$(call if_changed,stubcopy)
 
diff --git a/drivers/firmware/efi/libstub/arm32-stub.c b/drivers/firmware/efi/libstub/arm32-stub.c
index d08e5d55838c..4b5b2403b3a0 100644
--- a/drivers/firmware/efi/libstub/arm32-stub.c
+++ b/drivers/firmware/efi/libstub/arm32-stub.c
@@ -113,162 +113,58 @@ void free_screen_info(struct screen_info *si)
 	efi_bs_call(free_pool, si);
 }
 
-static efi_status_t reserve_kernel_base(unsigned long dram_base,
-					unsigned long *reserve_addr,
-					unsigned long *reserve_size)
-{
-	efi_physical_addr_t alloc_addr;
-	efi_memory_desc_t *memory_map;
-	unsigned long nr_pages, map_size, desc_size, buff_size;
-	efi_status_t status;
-	unsigned long l;
-
-	struct efi_boot_memmap map = {
-		.map		= &memory_map,
-		.map_size	= &map_size,
-		.desc_size	= &desc_size,
-		.desc_ver	= NULL,
-		.key_ptr	= NULL,
-		.buff_size	= &buff_size,
-	};
-
-	/*
-	 * Reserve memory for the uncompressed kernel image. This is
-	 * all that prevents any future allocations from conflicting
-	 * with the kernel. Since we can't tell from the compressed
-	 * image how much DRAM the kernel actually uses (due to BSS
-	 * size uncertainty) we allocate the maximum possible size.
-	 * Do this very early, as prints can cause memory allocations
-	 * that may conflict with this.
-	 */
-	alloc_addr = dram_base + MAX_UNCOMP_KERNEL_SIZE;
-	nr_pages = MAX_UNCOMP_KERNEL_SIZE / EFI_PAGE_SIZE;
-	status = efi_bs_call(allocate_pages, EFI_ALLOCATE_MAX_ADDRESS,
-			     EFI_BOOT_SERVICES_DATA, nr_pages, &alloc_addr);
-	if (status == EFI_SUCCESS) {
-		if (alloc_addr == dram_base) {
-			*reserve_addr = alloc_addr;
-			*reserve_size = MAX_UNCOMP_KERNEL_SIZE;
-			return EFI_SUCCESS;
-		}
-		/*
-		 * If we end up here, the allocation succeeded but starts below
-		 * dram_base. This can only occur if the real base of DRAM is
-		 * not a multiple of 128 MB, in which case dram_base will have
-		 * been rounded up. Since this implies that a part of the region
-		 * was already occupied, we need to fall through to the code
-		 * below to ensure that the existing allocations don't conflict.
-		 * For this reason, we use EFI_BOOT_SERVICES_DATA above and not
-		 * EFI_LOADER_DATA, which we wouldn't able to distinguish from
-		 * allocations that we want to disallow.
-		 */
-	}
-
-	/*
-	 * If the allocation above failed, we may still be able to proceed:
-	 * if the only allocations in the region are of types that will be
-	 * released to the OS after ExitBootServices(), the decompressor can
-	 * safely overwrite them.
-	 */
-	status = efi_get_memory_map(&map);
-	if (status != EFI_SUCCESS) {
-		efi_err("reserve_kernel_base(): Unable to retrieve memory map.\n");
-		return status;
-	}
-
-	for (l = 0; l < map_size; l += desc_size) {
-		efi_memory_desc_t *desc;
-		u64 start, end;
-
-		desc = (void *)memory_map + l;
-		start = desc->phys_addr;
-		end = start + desc->num_pages * EFI_PAGE_SIZE;
-
-		/* Skip if entry does not intersect with region */
-		if (start >= dram_base + MAX_UNCOMP_KERNEL_SIZE ||
-		    end <= dram_base)
-			continue;
-
-		switch (desc->type) {
-		case EFI_BOOT_SERVICES_CODE:
-		case EFI_BOOT_SERVICES_DATA:
-			/* Ignore types that are released to the OS anyway */
-			continue;
-
-		case EFI_CONVENTIONAL_MEMORY:
-			/* Skip soft reserved conventional memory */
-			if (efi_soft_reserve_enabled() &&
-			    (desc->attribute & EFI_MEMORY_SP))
-				continue;
-
-			/*
-			 * Reserve the intersection between this entry and the
-			 * region.
-			 */
-			start = max(start, (u64)dram_base);
-			end = min(end, (u64)dram_base + MAX_UNCOMP_KERNEL_SIZE);
-
-			status = efi_bs_call(allocate_pages,
-					     EFI_ALLOCATE_ADDRESS,
-					     EFI_LOADER_DATA,
-					     (end - start) / EFI_PAGE_SIZE,
-					     &start);
-			if (status != EFI_SUCCESS) {
-				efi_err("reserve_kernel_base(): alloc failed.\n");
-				goto out;
-			}
-			break;
-
-		case EFI_LOADER_CODE:
-		case EFI_LOADER_DATA:
-			/*
-			 * These regions may be released and reallocated for
-			 * another purpose (including EFI_RUNTIME_SERVICE_DATA)
-			 * at any time during the execution of the OS loader,
-			 * so we cannot consider them as safe.
-			 */
-		default:
-			/*
-			 * Treat any other allocation in the region as unsafe */
-			status = EFI_OUT_OF_RESOURCES;
-			goto out;
-		}
-	}
-
-	status = EFI_SUCCESS;
-out:
-	efi_bs_call(free_pool, memory_map);
-	return status;
-}
-
 efi_status_t handle_kernel_image(unsigned long *image_addr,
 				 unsigned long *image_size,
 				 unsigned long *reserve_addr,
 				 unsigned long *reserve_size,
-				 unsigned long dram_base,
 				 efi_loaded_image_t *image)
 {
-	unsigned long kernel_base;
+	const int slack = TEXT_OFFSET - 5 * PAGE_SIZE;
+	int alloc_size = MAX_UNCOMP_KERNEL_SIZE + EFI_PHYS_ALIGN;
+	unsigned long alloc_base, kernel_base;
 	efi_status_t status;
 
-	/* use a 16 MiB aligned base for the decompressed kernel */
-	kernel_base = round_up(dram_base, SZ_16M) + TEXT_OFFSET;
-
 	/*
-	 * Note that some platforms (notably, the Raspberry Pi 2) put
-	 * spin-tables and other pieces of firmware at the base of RAM,
-	 * abusing the fact that the window of TEXT_OFFSET bytes at the
-	 * base of the kernel image is only partially used at the moment.
-	 * (Up to 5 pages are used for the swapper page tables)
+	 * Allocate space for the decompressed kernel as low as possible.
+	 * The region should be 16 MiB aligned, but the first 'slack' bytes
+	 * are not used by Linux, so we allow those to be occupied by the
+	 * firmware.
 	 */
-	status = reserve_kernel_base(kernel_base - 5 * PAGE_SIZE, reserve_addr,
-				     reserve_size);
+	status = efi_low_alloc_above(alloc_size, EFI_PAGE_SIZE, &alloc_base, 0x0);
 	if (status != EFI_SUCCESS) {
 		efi_err("Unable to allocate memory for uncompressed kernel.\n");
 		return status;
 	}
 
-	*image_addr = kernel_base;
+	if ((alloc_base % EFI_PHYS_ALIGN) > slack) {
+		/*
+		 * More than 'slack' bytes are already occupied at the base of
+		 * the allocation, so we need to advance to the next 16 MiB block.
+		 */
+		kernel_base = round_up(alloc_base, EFI_PHYS_ALIGN);
+		efi_info("Free memory starts at 0x%lx, setting kernel_base to 0x%lx\n",
+			 alloc_base, kernel_base);
+	} else {
+		kernel_base = round_down(alloc_base, EFI_PHYS_ALIGN);
+	}
+
+	*reserve_addr = kernel_base + slack;
+	*reserve_size = MAX_UNCOMP_KERNEL_SIZE;
+
+	/* now free the parts that we will not use */
+	if (*reserve_addr > alloc_base) {
+		efi_bs_call(free_pages, alloc_base,
+			    (*reserve_addr - alloc_base) / EFI_PAGE_SIZE);
+		alloc_size -= *reserve_addr - alloc_base;
+	}
+	efi_bs_call(free_pages, *reserve_addr + MAX_UNCOMP_KERNEL_SIZE,
+		    (alloc_size - MAX_UNCOMP_KERNEL_SIZE) / EFI_PAGE_SIZE);
+
+	*image_addr = kernel_base + TEXT_OFFSET;
 	*image_size = 0;
+
+	efi_debug("image addr == 0x%lx, reserve_addr == 0x%lx\n",
+		  *image_addr, *reserve_addr);
+
 	return EFI_SUCCESS;
 }
diff --git a/drivers/firmware/efi/libstub/arm64-stub.c b/drivers/firmware/efi/libstub/arm64-stub.c
index e5bfac79e5ac..22ece1ad68a8 100644
--- a/drivers/firmware/efi/libstub/arm64-stub.c
+++ b/drivers/firmware/efi/libstub/arm64-stub.c
@@ -50,7 +50,6 @@ efi_status_t handle_kernel_image(unsigned long *image_addr,
 				 unsigned long *image_size,
 				 unsigned long *reserve_addr,
 				 unsigned long *reserve_size,
-				 unsigned long dram_base,
 				 efi_loaded_image_t *image)
 {
 	efi_status_t status;
@@ -62,10 +61,12 @@ efi_status_t handle_kernel_image(unsigned long *image_addr,
 			status = efi_get_random_bytes(sizeof(phys_seed),
 						      (u8 *)&phys_seed);
 			if (status == EFI_NOT_FOUND) {
-				efi_info("EFI_RNG_PROTOCOL unavailable, no randomness supplied\n");
+				efi_info("EFI_RNG_PROTOCOL unavailable, KASLR will be disabled\n");
+				efi_nokaslr = true;
 			} else if (status != EFI_SUCCESS) {
-				efi_err("efi_get_random_bytes() failed\n");
-				return status;
+				efi_err("efi_get_random_bytes() failed (0x%lx), KASLR will be disabled\n",
+					status);
+				efi_nokaslr = true;
 			}
 		} else {
 			efi_info("KASLR disabled on kernel command line\n");
@@ -77,7 +78,7 @@ efi_status_t handle_kernel_image(unsigned long *image_addr,
 
 	kernel_size = _edata - _text;
 	kernel_memsize = kernel_size + (_end - _edata);
-	*reserve_size = kernel_memsize + TEXT_OFFSET % min_kimg_align();
+	*reserve_size = kernel_memsize;
 
 	if (IS_ENABLED(CONFIG_RANDOMIZE_BASE) && phys_seed != 0) {
 		/*
@@ -91,7 +92,7 @@ efi_status_t handle_kernel_image(unsigned long *image_addr,
 	}
 
 	if (status != EFI_SUCCESS) {
-		if (IS_ALIGNED((u64)_text - TEXT_OFFSET, min_kimg_align())) {
+		if (IS_ALIGNED((u64)_text, min_kimg_align())) {
 			/*
 			 * Just execute from wherever we were loaded by the
 			 * UEFI PE/COFF loader if the alignment is suitable.
@@ -111,7 +112,7 @@ efi_status_t handle_kernel_image(unsigned long *image_addr,
 		}
 	}
 
-	*image_addr = *reserve_addr + TEXT_OFFSET % min_kimg_align();
+	*image_addr = *reserve_addr;
 	memcpy((void *)*image_addr, _text, kernel_size);
 
 	return EFI_SUCCESS;
diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c
index 6bca70bbb43d..aa8da0a49829 100644
--- a/drivers/firmware/efi/libstub/efi-stub-helper.c
+++ b/drivers/firmware/efi/libstub/efi-stub-helper.c
@@ -187,20 +187,28 @@ int efi_printk(const char *fmt, ...)
  */
 efi_status_t efi_parse_options(char const *cmdline)
 {
-	size_t len = strlen(cmdline) + 1;
+	size_t len;
 	efi_status_t status;
 	char *str, *buf;
 
+	if (!cmdline)
+		return EFI_SUCCESS;
+
+	len = strnlen(cmdline, COMMAND_LINE_SIZE - 1) + 1;
 	status = efi_bs_call(allocate_pool, EFI_LOADER_DATA, len, (void **)&buf);
 	if (status != EFI_SUCCESS)
 		return status;
 
-	str = skip_spaces(memcpy(buf, cmdline, len));
+	memcpy(buf, cmdline, len - 1);
+	buf[len - 1] = '\0';
+	str = skip_spaces(buf);
 
 	while (*str) {
 		char *param, *val;
 
 		str = next_arg(str, &param, &val);
+		if (!val && !strcmp(param, "--"))
+			break;
 
 		if (!strcmp(param, "nokaslr")) {
 			efi_nokaslr = true;
@@ -231,6 +239,102 @@ efi_status_t efi_parse_options(char const *cmdline)
 }
 
 /*
+ * The EFI_LOAD_OPTION descriptor has the following layout:
+ *	u32 Attributes;
+ *	u16 FilePathListLength;
+ *	u16 Description[];
+ *	efi_device_path_protocol_t FilePathList[];
+ *	u8 OptionalData[];
+ *
+ * This function validates and unpacks the variable-size data fields.
+ */
+static
+bool efi_load_option_unpack(efi_load_option_unpacked_t *dest,
+			    const efi_load_option_t *src, size_t size)
+{
+	const void *pos;
+	u16 c;
+	efi_device_path_protocol_t header;
+	const efi_char16_t *description;
+	const efi_device_path_protocol_t *file_path_list;
+
+	if (size < offsetof(efi_load_option_t, variable_data))
+		return false;
+	pos = src->variable_data;
+	size -= offsetof(efi_load_option_t, variable_data);
+
+	if ((src->attributes & ~EFI_LOAD_OPTION_MASK) != 0)
+		return false;
+
+	/* Scan description. */
+	description = pos;
+	do {
+		if (size < sizeof(c))
+			return false;
+		c = *(const u16 *)pos;
+		pos += sizeof(c);
+		size -= sizeof(c);
+	} while (c != L'\0');
+
+	/* Scan file_path_list. */
+	file_path_list = pos;
+	do {
+		if (size < sizeof(header))
+			return false;
+		header = *(const efi_device_path_protocol_t *)pos;
+		if (header.length < sizeof(header))
+			return false;
+		if (size < header.length)
+			return false;
+		pos += header.length;
+		size -= header.length;
+	} while ((header.type != EFI_DEV_END_PATH && header.type != EFI_DEV_END_PATH2) ||
+		 (header.sub_type != EFI_DEV_END_ENTIRE));
+	if (pos != (const void *)file_path_list + src->file_path_list_length)
+		return false;
+
+	dest->attributes = src->attributes;
+	dest->file_path_list_length = src->file_path_list_length;
+	dest->description = description;
+	dest->file_path_list = file_path_list;
+	dest->optional_data_size = size;
+	dest->optional_data = size ? pos : NULL;
+
+	return true;
+}
+
+/*
+ * At least some versions of Dell firmware pass the entire contents of the
+ * Boot#### variable, i.e. the EFI_LOAD_OPTION descriptor, rather than just the
+ * OptionalData field.
+ *
+ * Detect this case and extract OptionalData.
+ */
+void efi_apply_loadoptions_quirk(const void **load_options, int *load_options_size)
+{
+	const efi_load_option_t *load_option = *load_options;
+	efi_load_option_unpacked_t load_option_unpacked;
+
+	if (!IS_ENABLED(CONFIG_X86))
+		return;
+	if (!load_option)
+		return;
+	if (*load_options_size < sizeof(*load_option))
+		return;
+	if ((load_option->attributes & ~EFI_LOAD_OPTION_BOOT_MASK) != 0)
+		return;
+
+	if (!efi_load_option_unpack(&load_option_unpacked, load_option, *load_options_size))
+		return;
+
+	efi_warn_once(FW_BUG "LoadOptions is an EFI_LOAD_OPTION descriptor\n");
+	efi_warn_once(FW_BUG "Using OptionalData as a workaround\n");
+
+	*load_options = load_option_unpacked.optional_data;
+	*load_options_size = load_option_unpacked.optional_data_size;
+}
+
+/*
  * Convert the unicode UEFI command line to ASCII to pass to kernel.
  * Size of memory allocated return in *cmd_line_len.
  * Returns NULL on error.
@@ -239,12 +343,15 @@ char *efi_convert_cmdline(efi_loaded_image_t *image, int *cmd_line_len)
 {
 	const u16 *s2;
 	unsigned long cmdline_addr = 0;
-	int options_chars = efi_table_attr(image, load_options_size) / 2;
+	int options_chars = efi_table_attr(image, load_options_size);
 	const u16 *options = efi_table_attr(image, load_options);
 	int options_bytes = 0, safe_options_bytes = 0;  /* UTF-8 bytes */
 	bool in_quote = false;
 	efi_status_t status;
 
+	efi_apply_loadoptions_quirk((const void **)&options, &options_chars);
+	options_chars /= sizeof(*options);
+
 	if (options) {
 		s2 = options;
 		while (options_bytes < COMMAND_LINE_SIZE && options_chars--) {
diff --git a/drivers/firmware/efi/libstub/efi-stub.c b/drivers/firmware/efi/libstub/efi-stub.c
index a5a405d8ab44..914a343c7785 100644
--- a/drivers/firmware/efi/libstub/efi-stub.c
+++ b/drivers/firmware/efi/libstub/efi-stub.c
@@ -17,7 +17,10 @@
 
 /*
  * This is the base address at which to start allocating virtual memory ranges
- * for UEFI Runtime Services. This is in the low TTBR0 range so that we can use
+ * for UEFI Runtime Services.
+ *
+ * For ARM/ARM64:
+ * This is in the low TTBR0 range so that we can use
  * any allocation we choose, and eliminate the risk of a conflict after kexec.
  * The value chosen is the largest non-zero power of 2 suitable for this purpose
  * both on 32-bit and 64-bit ARM CPUs, to maximize the likelihood that it can
@@ -25,6 +28,12 @@
  * Since 32-bit ARM could potentially execute with a 1G/3G user/kernel split,
  * map everything below 1 GB. (512 MB is a reasonable upper bound for the
  * entire footprint of the UEFI runtime services memory regions)
+ *
+ * For RISC-V:
+ * There is no specific reason for which, this address (512MB) can't be used
+ * EFI runtime virtual address for RISC-V. It also helps to use EFI runtime
+ * services on both RV32/RV64. Keep the same runtime virtual address for RISC-V
+ * as well to minimize the code churn.
  */
 #define EFI_RT_VIRTUAL_BASE	SZ_512M
 #define EFI_RT_VIRTUAL_SIZE	SZ_512M
@@ -87,40 +96,6 @@ static void install_memreserve_table(void)
 		efi_err("Failed to install memreserve config table!\n");
 }
 
-static unsigned long get_dram_base(void)
-{
-	efi_status_t status;
-	unsigned long map_size, buff_size;
-	unsigned long membase  = EFI_ERROR;
-	struct efi_memory_map map;
-	efi_memory_desc_t *md;
-	struct efi_boot_memmap boot_map;
-
-	boot_map.map		= (efi_memory_desc_t **)&map.map;
-	boot_map.map_size	= &map_size;
-	boot_map.desc_size	= &map.desc_size;
-	boot_map.desc_ver	= NULL;
-	boot_map.key_ptr	= NULL;
-	boot_map.buff_size	= &buff_size;
-
-	status = efi_get_memory_map(&boot_map);
-	if (status != EFI_SUCCESS)
-		return membase;
-
-	map.map_end = map.map + map_size;
-
-	for_each_efi_memory_desc_in_map(&map, md) {
-		if (md->attribute & EFI_MEMORY_WB) {
-			if (membase > md->phys_addr)
-				membase = md->phys_addr;
-		}
-	}
-
-	efi_bs_call(free_pool, map.map);
-
-	return membase;
-}
-
 /*
  * EFI entry point for the arm/arm64 EFI stubs.  This is the entrypoint
  * that is described in the PE/COFF header.  Most of the code is the same
@@ -134,7 +109,6 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
 	efi_status_t status;
 	unsigned long image_addr;
 	unsigned long image_size = 0;
-	unsigned long dram_base;
 	/* addr/point and size pairs for memory management*/
 	unsigned long initrd_addr = 0;
 	unsigned long initrd_size = 0;
@@ -174,13 +148,6 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
 		goto fail;
 	}
 
-	dram_base = get_dram_base();
-	if (dram_base == EFI_ERROR) {
-		efi_err("Failed to find DRAM base\n");
-		status = EFI_LOAD_ERROR;
-		goto fail;
-	}
-
 	/*
 	 * Get the command line from EFI, using the LOADED_IMAGE
 	 * protocol. We are going to copy the command line into the
@@ -218,7 +185,7 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
 	status = handle_kernel_image(&image_addr, &image_size,
 				     &reserve_addr,
 				     &reserve_size,
-				     dram_base, image);
+				     image);
 	if (status != EFI_SUCCESS) {
 		efi_err("Failed to relocate kernel\n");
 		goto fail_free_screeninfo;
@@ -262,7 +229,7 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
 		efi_info("Generating empty DTB\n");
 
 	if (!efi_noinitrd) {
-		max_addr = efi_get_max_initrd_addr(dram_base, image_addr);
+		max_addr = efi_get_max_initrd_addr(image_addr);
 		status = efi_load_initrd(image, &initrd_addr, &initrd_size,
 					 ULONG_MAX, max_addr);
 		if (status != EFI_SUCCESS)
@@ -306,7 +273,7 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
 	install_memreserve_table();
 
 	status = allocate_new_fdt_and_exit_boot(handle, &fdt_addr,
-						efi_get_max_fdt_addr(dram_base),
+						efi_get_max_fdt_addr(image_addr),
 						initrd_addr, initrd_size,
 						cmdline_ptr, fdt_addr, fdt_size);
 	if (status != EFI_SUCCESS)
diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h
index 85050f5a1b28..2d7abcd99de9 100644
--- a/drivers/firmware/efi/libstub/efistub.h
+++ b/drivers/firmware/efi/libstub/efistub.h
@@ -10,9 +10,6 @@
 #include <linux/types.h>
 #include <asm/efi.h>
 
-/* error code which can't be mistaken for valid address */
-#define EFI_ERROR	(~0UL)
-
 /*
  * __init annotations should not be used in the EFI stub, since the code is
  * either included in the decompressor (x86, ARM) where they have no effect,
@@ -55,11 +52,34 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
 
 #define efi_info(fmt, ...) \
 	efi_printk(KERN_INFO fmt, ##__VA_ARGS__)
+#define efi_warn(fmt, ...) \
+	efi_printk(KERN_WARNING "WARNING: " fmt, ##__VA_ARGS__)
 #define efi_err(fmt, ...) \
 	efi_printk(KERN_ERR "ERROR: " fmt, ##__VA_ARGS__)
 #define efi_debug(fmt, ...) \
 	efi_printk(KERN_DEBUG "DEBUG: " fmt, ##__VA_ARGS__)
 
+#define efi_printk_once(fmt, ...) 		\
+({						\
+	static bool __print_once;		\
+	bool __ret_print_once = !__print_once;	\
+						\
+	if (!__print_once) {			\
+		__print_once = true;		\
+		efi_printk(fmt, ##__VA_ARGS__);	\
+	}					\
+	__ret_print_once;			\
+})
+
+#define efi_info_once(fmt, ...) \
+	efi_printk_once(KERN_INFO fmt, ##__VA_ARGS__)
+#define efi_warn_once(fmt, ...) \
+	efi_printk_once(KERN_WARNING "WARNING: " fmt, ##__VA_ARGS__)
+#define efi_err_once(fmt, ...) \
+	efi_printk_once(KERN_ERR "ERROR: " fmt, ##__VA_ARGS__)
+#define efi_debug_once(fmt, ...) \
+	efi_printk_once(KERN_DEBUG "DEBUG: " fmt, ##__VA_ARGS__)
+
 /* Helper macros for the usual case of using simple C variables: */
 #ifndef fdt_setprop_inplace_var
 #define fdt_setprop_inplace_var(fdt, node_offset, name, var) \
@@ -688,6 +708,35 @@ union efi_load_file_protocol {
 	} mixed_mode;
 };
 
+typedef struct {
+	u32 attributes;
+	u16 file_path_list_length;
+	u8 variable_data[];
+	// efi_char16_t description[];
+	// efi_device_path_protocol_t file_path_list[];
+	// u8 optional_data[];
+} __packed efi_load_option_t;
+
+#define EFI_LOAD_OPTION_ACTIVE		0x0001U
+#define EFI_LOAD_OPTION_FORCE_RECONNECT	0x0002U
+#define EFI_LOAD_OPTION_HIDDEN		0x0008U
+#define EFI_LOAD_OPTION_CATEGORY	0x1f00U
+#define   EFI_LOAD_OPTION_CATEGORY_BOOT	0x0000U
+#define   EFI_LOAD_OPTION_CATEGORY_APP	0x0100U
+
+#define EFI_LOAD_OPTION_BOOT_MASK \
+	(EFI_LOAD_OPTION_ACTIVE|EFI_LOAD_OPTION_HIDDEN|EFI_LOAD_OPTION_CATEGORY)
+#define EFI_LOAD_OPTION_MASK (EFI_LOAD_OPTION_FORCE_RECONNECT|EFI_LOAD_OPTION_BOOT_MASK)
+
+typedef struct {
+	u32 attributes;
+	u16 file_path_list_length;
+	const efi_char16_t *description;
+	const efi_device_path_protocol_t *file_path_list;
+	size_t optional_data_size;
+	const void *optional_data;
+} efi_load_option_unpacked_t;
+
 void efi_pci_disable_bridge_busmaster(void);
 
 typedef efi_status_t (*efi_exit_boot_map_processing)(
@@ -730,6 +779,8 @@ __printf(1, 2) int efi_printk(char const *fmt, ...);
 
 void efi_free(unsigned long size, unsigned long addr);
 
+void efi_apply_loadoptions_quirk(const void **load_options, int *load_options_size);
+
 char *efi_convert_cmdline(efi_loaded_image_t *image, int *cmd_line_len);
 
 efi_status_t efi_get_memory_map(struct efi_boot_memmap *map);
@@ -740,6 +791,9 @@ efi_status_t efi_allocate_pages(unsigned long size, unsigned long *addr,
 efi_status_t efi_allocate_pages_aligned(unsigned long size, unsigned long *addr,
 					unsigned long max, unsigned long align);
 
+efi_status_t efi_low_alloc_above(unsigned long size, unsigned long align,
+				 unsigned long *addr, unsigned long min);
+
 efi_status_t efi_relocate_kernel(unsigned long *image_addr,
 				 unsigned long image_size,
 				 unsigned long alloc_size,
@@ -786,7 +840,6 @@ efi_status_t handle_kernel_image(unsigned long *image_addr,
 				 unsigned long *image_size,
 				 unsigned long *reserve_addr,
 				 unsigned long *reserve_size,
-				 unsigned long dram_base,
 				 efi_loaded_image_t *image);
 
 asmlinkage void __noreturn efi_enter_kernel(unsigned long entrypoint,
diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c
index 11ecf3c4640e..368cd60000ee 100644
--- a/drivers/firmware/efi/libstub/fdt.c
+++ b/drivers/firmware/efi/libstub/fdt.c
@@ -136,7 +136,7 @@ static efi_status_t update_fdt(void *orig_fdt, unsigned long orig_fdt_size,
 	if (status)
 		goto fdt_set_fail;
 
-	if (IS_ENABLED(CONFIG_RANDOMIZE_BASE)) {
+	if (IS_ENABLED(CONFIG_RANDOMIZE_BASE) && !efi_nokaslr) {
 		efi_status_t efi_status;
 
 		efi_status = efi_get_random_bytes(sizeof(fdt_val64),
@@ -145,8 +145,6 @@ static efi_status_t update_fdt(void *orig_fdt, unsigned long orig_fdt_size,
 			status = fdt_setprop_var(fdt, node, "kaslr-seed", fdt_val64);
 			if (status)
 				goto fdt_set_fail;
-		} else if (efi_status != EFI_NOT_FOUND) {
-			return efi_status;
 		}
 	}
 
diff --git a/drivers/firmware/efi/libstub/file.c b/drivers/firmware/efi/libstub/file.c
index 630caa6b1f4c..4e81c6077188 100644
--- a/drivers/firmware/efi/libstub/file.c
+++ b/drivers/firmware/efi/libstub/file.c
@@ -136,7 +136,7 @@ efi_status_t handle_cmdline_files(efi_loaded_image_t *image,
 				  unsigned long *load_size)
 {
 	const efi_char16_t *cmdline = image->load_options;
-	int cmdline_len = image->load_options_size / 2;
+	int cmdline_len = image->load_options_size;
 	unsigned long efi_chunk_size = ULONG_MAX;
 	efi_file_protocol_t *volume = NULL;
 	efi_file_protocol_t *file;
@@ -148,6 +148,9 @@ efi_status_t handle_cmdline_files(efi_loaded_image_t *image,
 	if (!load_addr || !load_size)
 		return EFI_INVALID_PARAMETER;
 
+	efi_apply_loadoptions_quirk((const void **)&cmdline, &cmdline_len);
+	cmdline_len /= sizeof(*cmdline);
+
 	if (IS_ENABLED(CONFIG_X86) && !efi_nochunk)
 		efi_chunk_size = EFI_READ_CHUNK_SIZE;
 
diff --git a/drivers/firmware/efi/libstub/hidden.h b/drivers/firmware/efi/libstub/hidden.h
deleted file mode 100644
index 3493b041f419..000000000000
--- a/drivers/firmware/efi/libstub/hidden.h
+++ /dev/null
@@ -1,6 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * To prevent the compiler from emitting GOT-indirected (and thus absolute)
- * references to any global symbols, override their visibility as 'hidden'
- */
-#pragma GCC visibility push(hidden)
diff --git a/drivers/firmware/efi/libstub/relocate.c b/drivers/firmware/efi/libstub/relocate.c
index 9b1aaf8b123f..8ee9eb2b9039 100644
--- a/drivers/firmware/efi/libstub/relocate.c
+++ b/drivers/firmware/efi/libstub/relocate.c
@@ -20,8 +20,8 @@
  *
  * Return:	status code
  */
-static efi_status_t efi_low_alloc_above(unsigned long size, unsigned long align,
-					unsigned long *addr, unsigned long min)
+efi_status_t efi_low_alloc_above(unsigned long size, unsigned long align,
+				 unsigned long *addr, unsigned long min)
 {
 	unsigned long map_size, desc_size, buff_size;
 	efi_memory_desc_t *map;
diff --git a/drivers/firmware/efi/libstub/riscv-stub.c b/drivers/firmware/efi/libstub/riscv-stub.c
new file mode 100644
index 000000000000..380e4e251399
--- /dev/null
+++ b/drivers/firmware/efi/libstub/riscv-stub.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Western Digital Corporation or its affiliates.
+ */
+
+#include <linux/efi.h>
+#include <linux/libfdt.h>
+
+#include <asm/efi.h>
+#include <asm/sections.h>
+
+#include "efistub.h"
+
+/*
+ * RISC-V requires the kernel image to placed 2 MB aligned base for 64 bit and
+ * 4MB for 32 bit.
+ */
+#ifdef CONFIG_64BIT
+#define MIN_KIMG_ALIGN		SZ_2M
+#else
+#define MIN_KIMG_ALIGN		SZ_4M
+#endif
+
+typedef void __noreturn (*jump_kernel_func)(unsigned int, unsigned long);
+
+static u32 hartid;
+
+static u32 get_boot_hartid_from_fdt(void)
+{
+	const void *fdt;
+	int chosen_node, len;
+	const fdt32_t *prop;
+
+	fdt = get_efi_config_table(DEVICE_TREE_GUID);
+	if (!fdt)
+		return U32_MAX;
+
+	chosen_node = fdt_path_offset(fdt, "/chosen");
+	if (chosen_node < 0)
+		return U32_MAX;
+
+	prop = fdt_getprop((void *)fdt, chosen_node, "boot-hartid", &len);
+	if (!prop || len != sizeof(u32))
+		return U32_MAX;
+
+	return fdt32_to_cpu(*prop);
+}
+
+efi_status_t check_platform_features(void)
+{
+	hartid = get_boot_hartid_from_fdt();
+	if (hartid == U32_MAX) {
+		efi_err("/chosen/boot-hartid missing or invalid!\n");
+		return EFI_UNSUPPORTED;
+	}
+	return EFI_SUCCESS;
+}
+
+void __noreturn efi_enter_kernel(unsigned long entrypoint, unsigned long fdt,
+				 unsigned long fdt_size)
+{
+	unsigned long stext_offset = _start_kernel - _start;
+	unsigned long kernel_entry = entrypoint + stext_offset;
+	jump_kernel_func jump_kernel = (jump_kernel_func)kernel_entry;
+
+	/*
+	 * Jump to real kernel here with following constraints.
+	 * 1. MMU should be disabled.
+	 * 2. a0 should contain hartid
+	 * 3. a1 should DT address
+	 */
+	csr_write(CSR_SATP, 0);
+	jump_kernel(hartid, fdt);
+}
+
+efi_status_t handle_kernel_image(unsigned long *image_addr,
+				 unsigned long *image_size,
+				 unsigned long *reserve_addr,
+				 unsigned long *reserve_size,
+				 efi_loaded_image_t *image)
+{
+	unsigned long kernel_size = 0;
+	unsigned long preferred_addr;
+	efi_status_t status;
+
+	kernel_size = _edata - _start;
+	*image_addr = (unsigned long)_start;
+	*image_size = kernel_size + (_end - _edata);
+
+	/*
+	 * RISC-V kernel maps PAGE_OFFSET virtual address to the same physical
+	 * address where kernel is booted. That's why kernel should boot from
+	 * as low as possible to avoid wastage of memory. Currently, dram_base
+	 * is occupied by the firmware. So the preferred address for kernel to
+	 * boot is next aligned address. If preferred address is not available,
+	 * relocate_kernel will fall back to efi_low_alloc_above to allocate
+	 * lowest possible memory region as long as the address and size meets
+	 * the alignment constraints.
+	 */
+	preferred_addr = MIN_KIMG_ALIGN;
+	status = efi_relocate_kernel(image_addr, kernel_size, *image_size,
+				     preferred_addr, MIN_KIMG_ALIGN, 0x0);
+
+	if (status != EFI_SUCCESS) {
+		efi_err("Failed to relocate kernel\n");
+		*image_size = 0;
+	}
+	return status;
+}
diff --git a/drivers/firmware/efi/libstub/string.c b/drivers/firmware/efi/libstub/string.c
index 1ac2f8764715..5d13e43869ee 100644
--- a/drivers/firmware/efi/libstub/string.c
+++ b/drivers/firmware/efi/libstub/string.c
@@ -7,6 +7,7 @@
  */
 
 #include <linux/ctype.h>
+#include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/string.h>
 
diff --git a/drivers/firmware/efi/libstub/vsprintf.c b/drivers/firmware/efi/libstub/vsprintf.c
index e65ef49a54cd..1088e288c04d 100644
--- a/drivers/firmware/efi/libstub/vsprintf.c
+++ b/drivers/firmware/efi/libstub/vsprintf.c
@@ -135,7 +135,7 @@ char *number(char *end, unsigned long long num, int base, char locase)
 		break;
 	default:
 		unreachable();
-	};
+	}
 
 	return end;
 }
diff --git a/drivers/firmware/efi/mokvar-table.c b/drivers/firmware/efi/mokvar-table.c
new file mode 100644
index 000000000000..d8bc01340686
--- /dev/null
+++ b/drivers/firmware/efi/mokvar-table.c
@@ -0,0 +1,359 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * mokvar-table.c
+ *
+ * Copyright (c) 2020 Red Hat
+ * Author: Lenny Szubowicz <lszubowi@redhat.com>
+ *
+ * This module contains the kernel support for the Linux EFI Machine
+ * Owner Key (MOK) variable configuration table, which is identified by
+ * the LINUX_EFI_MOK_VARIABLE_TABLE_GUID.
+ *
+ * This EFI configuration table provides a more robust alternative to
+ * EFI volatile variables by which an EFI boot loader can pass the
+ * contents of the Machine Owner Key (MOK) certificate stores to the
+ * kernel during boot. If both the EFI MOK config table and corresponding
+ * EFI MOK variables are present, the table should be considered as
+ * more authoritative.
+ *
+ * This module includes code that validates and maps the EFI MOK table,
+ * if it's presence was detected very early in boot.
+ *
+ * Kernel interface routines are provided to walk through all the
+ * entries in the MOK config table or to search for a specific named
+ * entry.
+ *
+ * The contents of the individual named MOK config table entries are
+ * made available to user space via read-only sysfs binary files under:
+ *
+ * /sys/firmware/efi/mok-variables/
+ *
+ */
+#define pr_fmt(fmt) "mokvar: " fmt
+
+#include <linux/capability.h>
+#include <linux/efi.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/kobject.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+
+#include <asm/early_ioremap.h>
+
+/*
+ * The LINUX_EFI_MOK_VARIABLE_TABLE_GUID config table is a packed
+ * sequence of struct efi_mokvar_table_entry, one for each named
+ * MOK variable. The sequence is terminated by an entry with a
+ * completely NULL name and 0 data size.
+ *
+ * efi_mokvar_table_size is set to the computed size of the
+ * MOK config table by efi_mokvar_table_init(). This will be
+ * non-zero if and only if the table if present and has been
+ * validated by efi_mokvar_table_init().
+ */
+static size_t efi_mokvar_table_size;
+
+/*
+ * efi_mokvar_table_va is the kernel virtual address at which the
+ * EFI MOK config table has been mapped by efi_mokvar_sysfs_init().
+ */
+static struct efi_mokvar_table_entry *efi_mokvar_table_va;
+
+/*
+ * Each /sys/firmware/efi/mok-variables/ sysfs file is represented by
+ * an instance of struct efi_mokvar_sysfs_attr on efi_mokvar_sysfs_list.
+ * bin_attr.private points to the associated EFI MOK config table entry.
+ *
+ * This list is created during boot and then remains unchanged.
+ * So no synchronization is currently required to walk the list.
+ */
+struct efi_mokvar_sysfs_attr {
+	struct bin_attribute bin_attr;
+	struct list_head node;
+};
+
+static LIST_HEAD(efi_mokvar_sysfs_list);
+static struct kobject *mokvar_kobj;
+
+/*
+ * efi_mokvar_table_init() - Early boot validation of EFI MOK config table
+ *
+ * If present, validate and compute the size of the EFI MOK variable
+ * configuration table. This table may be provided by an EFI boot loader
+ * as an alternative to ordinary EFI variables, due to platform-dependent
+ * limitations. The memory occupied by this table is marked as reserved.
+ *
+ * This routine must be called before efi_free_boot_services() in order
+ * to guarantee that it can mark the table as reserved.
+ *
+ * Implicit inputs:
+ * efi.mokvar_table:	Physical address of EFI MOK variable config table
+ *			or special value that indicates no such table.
+ *
+ * Implicit outputs:
+ * efi_mokvar_table_size: Computed size of EFI MOK variable config table.
+ *			The table is considered present and valid if this
+ *			is non-zero.
+ */
+void __init efi_mokvar_table_init(void)
+{
+	efi_memory_desc_t md;
+	void *va = NULL;
+	unsigned long cur_offset = 0;
+	unsigned long offset_limit;
+	unsigned long map_size = 0;
+	unsigned long map_size_needed = 0;
+	unsigned long size;
+	struct efi_mokvar_table_entry *mokvar_entry;
+	int err;
+
+	if (!efi_enabled(EFI_MEMMAP))
+		return;
+
+	if (efi.mokvar_table == EFI_INVALID_TABLE_ADDR)
+		return;
+	/*
+	 * The EFI MOK config table must fit within a single EFI memory
+	 * descriptor range.
+	 */
+	err = efi_mem_desc_lookup(efi.mokvar_table, &md);
+	if (err) {
+		pr_warn("EFI MOKvar config table is not within the EFI memory map\n");
+		return;
+	}
+
+	offset_limit = efi_mem_desc_end(&md) - efi.mokvar_table;
+
+	/*
+	 * Validate the MOK config table. Since there is no table header
+	 * from which we could get the total size of the MOK config table,
+	 * we compute the total size as we validate each variably sized
+	 * entry, remapping as necessary.
+	 */
+	err = -EINVAL;
+	while (cur_offset + sizeof(*mokvar_entry) <= offset_limit) {
+		mokvar_entry = va + cur_offset;
+		map_size_needed = cur_offset + sizeof(*mokvar_entry);
+		if (map_size_needed > map_size) {
+			if (va)
+				early_memunmap(va, map_size);
+			/*
+			 * Map a little more than the fixed size entry
+			 * header, anticipating some data. It's safe to
+			 * do so as long as we stay within current memory
+			 * descriptor.
+			 */
+			map_size = min(map_size_needed + 2*EFI_PAGE_SIZE,
+				       offset_limit);
+			va = early_memremap(efi.mokvar_table, map_size);
+			if (!va) {
+				pr_err("Failed to map EFI MOKvar config table pa=0x%lx, size=%lu.\n",
+				       efi.mokvar_table, map_size);
+				return;
+			}
+			mokvar_entry = va + cur_offset;
+		}
+
+		/* Check for last sentinel entry */
+		if (mokvar_entry->name[0] == '\0') {
+			if (mokvar_entry->data_size != 0)
+				break;
+			err = 0;
+			break;
+		}
+
+		/* Sanity check that the name is null terminated */
+		size = strnlen(mokvar_entry->name,
+			       sizeof(mokvar_entry->name));
+		if (size >= sizeof(mokvar_entry->name))
+			break;
+
+		/* Advance to the next entry */
+		cur_offset = map_size_needed + mokvar_entry->data_size;
+	}
+
+	if (va)
+		early_memunmap(va, map_size);
+	if (err) {
+		pr_err("EFI MOKvar config table is not valid\n");
+		return;
+	}
+	efi_mem_reserve(efi.mokvar_table, map_size_needed);
+	efi_mokvar_table_size = map_size_needed;
+}
+
+/*
+ * efi_mokvar_entry_next() - Get next entry in the EFI MOK config table
+ *
+ * mokvar_entry:	Pointer to current EFI MOK config table entry
+ *			or null. Null indicates get first entry.
+ *			Passed by reference. This is updated to the
+ *			same value as the return value.
+ *
+ * Returns:		Pointer to next EFI MOK config table entry
+ *			or null, if there are no more entries.
+ *			Same value is returned in the mokvar_entry
+ *			parameter.
+ *
+ * This routine depends on the EFI MOK config table being entirely
+ * mapped with it's starting virtual address in efi_mokvar_table_va.
+ */
+struct efi_mokvar_table_entry *efi_mokvar_entry_next(
+			struct efi_mokvar_table_entry **mokvar_entry)
+{
+	struct efi_mokvar_table_entry *mokvar_cur;
+	struct efi_mokvar_table_entry *mokvar_next;
+	size_t size_cur;
+
+	mokvar_cur = *mokvar_entry;
+	*mokvar_entry = NULL;
+
+	if (efi_mokvar_table_va == NULL)
+		return NULL;
+
+	if (mokvar_cur == NULL) {
+		mokvar_next = efi_mokvar_table_va;
+	} else {
+		if (mokvar_cur->name[0] == '\0')
+			return NULL;
+		size_cur = sizeof(*mokvar_cur) + mokvar_cur->data_size;
+		mokvar_next = (void *)mokvar_cur + size_cur;
+	}
+
+	if (mokvar_next->name[0] == '\0')
+		return NULL;
+
+	*mokvar_entry = mokvar_next;
+	return mokvar_next;
+}
+
+/*
+ * efi_mokvar_entry_find() - Find EFI MOK config entry by name
+ *
+ * name:	Name of the entry to look for.
+ *
+ * Returns:	Pointer to EFI MOK config table entry if found;
+ *		null otherwise.
+ *
+ * This routine depends on the EFI MOK config table being entirely
+ * mapped with it's starting virtual address in efi_mokvar_table_va.
+ */
+struct efi_mokvar_table_entry *efi_mokvar_entry_find(const char *name)
+{
+	struct efi_mokvar_table_entry *mokvar_entry = NULL;
+
+	while (efi_mokvar_entry_next(&mokvar_entry)) {
+		if (!strncmp(name, mokvar_entry->name,
+			     sizeof(mokvar_entry->name)))
+			return mokvar_entry;
+	}
+	return NULL;
+}
+
+/*
+ * efi_mokvar_sysfs_read() - sysfs binary file read routine
+ *
+ * Returns:	Count of bytes read.
+ *
+ * Copy EFI MOK config table entry data for this mokvar sysfs binary file
+ * to the supplied buffer, starting at the specified offset into mokvar table
+ * entry data, for the specified count bytes. The copy is limited by the
+ * amount of data in this mokvar config table entry.
+ */
+static ssize_t efi_mokvar_sysfs_read(struct file *file, struct kobject *kobj,
+				 struct bin_attribute *bin_attr, char *buf,
+				 loff_t off, size_t count)
+{
+	struct efi_mokvar_table_entry *mokvar_entry = bin_attr->private;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return 0;
+
+	if (off >= mokvar_entry->data_size)
+		return 0;
+	if (count >  mokvar_entry->data_size - off)
+		count = mokvar_entry->data_size - off;
+
+	memcpy(buf, mokvar_entry->data + off, count);
+	return count;
+}
+
+/*
+ * efi_mokvar_sysfs_init() - Map EFI MOK config table and create sysfs
+ *
+ * Map the EFI MOK variable config table for run-time use by the kernel
+ * and create the sysfs entries in /sys/firmware/efi/mok-variables/
+ *
+ * This routine just returns if a valid EFI MOK variable config table
+ * was not found earlier during boot.
+ *
+ * This routine must be called during a "middle" initcall phase, i.e.
+ * after efi_mokvar_table_init() but before UEFI certs are loaded
+ * during late init.
+ *
+ * Implicit inputs:
+ * efi.mokvar_table:	Physical address of EFI MOK variable config table
+ *			or special value that indicates no such table.
+ *
+ * efi_mokvar_table_size: Computed size of EFI MOK variable config table.
+ *			The table is considered present and valid if this
+ *			is non-zero.
+ *
+ * Implicit outputs:
+ * efi_mokvar_table_va:	Start virtual address of the EFI MOK config table.
+ */
+static int __init efi_mokvar_sysfs_init(void)
+{
+	void *config_va;
+	struct efi_mokvar_table_entry *mokvar_entry = NULL;
+	struct efi_mokvar_sysfs_attr *mokvar_sysfs = NULL;
+	int err = 0;
+
+	if (efi_mokvar_table_size == 0)
+		return -ENOENT;
+
+	config_va = memremap(efi.mokvar_table, efi_mokvar_table_size,
+			     MEMREMAP_WB);
+	if (!config_va) {
+		pr_err("Failed to map EFI MOKvar config table\n");
+		return -ENOMEM;
+	}
+	efi_mokvar_table_va = config_va;
+
+	mokvar_kobj = kobject_create_and_add("mok-variables", efi_kobj);
+	if (!mokvar_kobj) {
+		pr_err("Failed to create EFI mok-variables sysfs entry\n");
+		return -ENOMEM;
+	}
+
+	while (efi_mokvar_entry_next(&mokvar_entry)) {
+		mokvar_sysfs = kzalloc(sizeof(*mokvar_sysfs), GFP_KERNEL);
+		if (!mokvar_sysfs) {
+			err = -ENOMEM;
+			break;
+		}
+
+		sysfs_bin_attr_init(&mokvar_sysfs->bin_attr);
+		mokvar_sysfs->bin_attr.private = mokvar_entry;
+		mokvar_sysfs->bin_attr.attr.name = mokvar_entry->name;
+		mokvar_sysfs->bin_attr.attr.mode = 0400;
+		mokvar_sysfs->bin_attr.size = mokvar_entry->data_size;
+		mokvar_sysfs->bin_attr.read = efi_mokvar_sysfs_read;
+
+		err = sysfs_create_bin_file(mokvar_kobj,
+					   &mokvar_sysfs->bin_attr);
+		if (err)
+			break;
+
+		list_add_tail(&mokvar_sysfs->node, &efi_mokvar_sysfs_list);
+	}
+
+	if (err) {
+		pr_err("Failed to create some EFI mok-variables sysfs entries\n");
+		kfree(mokvar_sysfs);
+	}
+	return err;
+}
+device_initcall(efi_mokvar_sysfs_init);
diff --git a/drivers/firmware/efi/riscv-runtime.c b/drivers/firmware/efi/riscv-runtime.c
new file mode 100644
index 000000000000..d28e715d2bcc
--- /dev/null
+++ b/drivers/firmware/efi/riscv-runtime.c
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Extensible Firmware Interface
+ *
+ * Copyright (C) 2020 Western Digital Corporation or its affiliates.
+ *
+ * Based on Extensible Firmware Interface Specification version 2.4
+ * Adapted from drivers/firmware/efi/arm-runtime.c
+ *
+ */
+
+#include <linux/dmi.h>
+#include <linux/efi.h>
+#include <linux/io.h>
+#include <linux/memblock.h>
+#include <linux/mm_types.h>
+#include <linux/preempt.h>
+#include <linux/rbtree.h>
+#include <linux/rwsem.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/pgtable.h>
+
+#include <asm/cacheflush.h>
+#include <asm/efi.h>
+#include <asm/mmu.h>
+#include <asm/pgalloc.h>
+
+static bool __init efi_virtmap_init(void)
+{
+	efi_memory_desc_t *md;
+
+	efi_mm.pgd = pgd_alloc(&efi_mm);
+	mm_init_cpumask(&efi_mm);
+	init_new_context(NULL, &efi_mm);
+
+	for_each_efi_memory_desc(md) {
+		phys_addr_t phys = md->phys_addr;
+		int ret;
+
+		if (!(md->attribute & EFI_MEMORY_RUNTIME))
+			continue;
+		if (md->virt_addr == 0)
+			return false;
+
+		ret = efi_create_mapping(&efi_mm, md);
+		if (ret) {
+			pr_warn("  EFI remap %pa: failed to create mapping (%d)\n",
+				&phys, ret);
+			return false;
+		}
+	}
+
+	if (efi_memattr_apply_permissions(&efi_mm, efi_set_mapping_permissions))
+		return false;
+
+	return true;
+}
+
+/*
+ * Enable the UEFI Runtime Services if all prerequisites are in place, i.e.,
+ * non-early mapping of the UEFI system table and virtual mappings for all
+ * EFI_MEMORY_RUNTIME regions.
+ */
+static int __init riscv_enable_runtime_services(void)
+{
+	u64 mapsize;
+
+	if (!efi_enabled(EFI_BOOT)) {
+		pr_info("EFI services will not be available.\n");
+		return 0;
+	}
+
+	efi_memmap_unmap();
+
+	mapsize = efi.memmap.desc_size * efi.memmap.nr_map;
+
+	if (efi_memmap_init_late(efi.memmap.phys_map, mapsize)) {
+		pr_err("Failed to remap EFI memory map\n");
+		return 0;
+	}
+
+	if (efi_soft_reserve_enabled()) {
+		efi_memory_desc_t *md;
+
+		for_each_efi_memory_desc(md) {
+			int md_size = md->num_pages << EFI_PAGE_SHIFT;
+			struct resource *res;
+
+			if (!(md->attribute & EFI_MEMORY_SP))
+				continue;
+
+			res = kzalloc(sizeof(*res), GFP_KERNEL);
+			if (WARN_ON(!res))
+				break;
+
+			res->start	= md->phys_addr;
+			res->end	= md->phys_addr + md_size - 1;
+			res->name	= "Soft Reserved";
+			res->flags	= IORESOURCE_MEM;
+			res->desc	= IORES_DESC_SOFT_RESERVED;
+
+			insert_resource(&iomem_resource, res);
+		}
+	}
+
+	if (efi_runtime_disabled()) {
+		pr_info("EFI runtime services will be disabled.\n");
+		return 0;
+	}
+
+	if (efi_enabled(EFI_RUNTIME_SERVICES)) {
+		pr_info("EFI runtime services access via paravirt.\n");
+		return 0;
+	}
+
+	pr_info("Remapping and enabling EFI services.\n");
+
+	if (!efi_virtmap_init()) {
+		pr_err("UEFI virtual mapping missing or invalid -- runtime services will not be available\n");
+		return -ENOMEM;
+	}
+
+	/* Set up runtime services function pointers */
+	efi_native_runtime_setup();
+	set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
+
+	return 0;
+}
+early_initcall(riscv_enable_runtime_services);
+
+void efi_virtmap_load(void)
+{
+	preempt_disable();
+	switch_mm(current->active_mm, &efi_mm, NULL);
+}
+
+void efi_virtmap_unload(void)
+{
+	switch_mm(&efi_mm, current->active_mm, NULL);
+	preempt_enable();
+}
diff --git a/drivers/firmware/efi/vars.c b/drivers/firmware/efi/vars.c
index 973eef234b36..41c1d00bf933 100644
--- a/drivers/firmware/efi/vars.c
+++ b/drivers/firmware/efi/vars.c
@@ -32,10 +32,6 @@ static struct efivars *__efivars;
  */
 static DEFINE_SEMAPHORE(efivars_lock);
 
-static bool efivar_wq_enabled = true;
-DECLARE_WORK(efivar_work, NULL);
-EXPORT_SYMBOL_GPL(efivar_work);
-
 static bool
 validate_device_path(efi_char16_t *var_name, int match, u8 *buffer,
 		     unsigned long len)
@@ -391,13 +387,6 @@ static void dup_variable_bug(efi_char16_t *str16, efi_guid_t *vendor_guid,
 	size_t i, len8 = len16 / sizeof(efi_char16_t);
 	char *str8;
 
-	/*
-	 * Disable the workqueue since the algorithm it uses for
-	 * detecting new variables won't work with this buggy
-	 * implementation of GetNextVariableName().
-	 */
-	efivar_wq_enabled = false;
-
 	str8 = kzalloc(len8, GFP_KERNEL);
 	if (!str8)
 		return;
@@ -414,7 +403,6 @@ static void dup_variable_bug(efi_char16_t *str16, efi_guid_t *vendor_guid,
  * efivar_init - build the initial list of EFI variables
  * @func: callback function to invoke for every variable
  * @data: function-specific data to pass to @func
- * @atomic: do we need to execute the @func-loop atomically?
  * @duplicates: error if we encounter duplicates on @head?
  * @head: initialised head of variable list
  *
@@ -1158,16 +1146,6 @@ struct kobject *efivars_kobject(void)
 EXPORT_SYMBOL_GPL(efivars_kobject);
 
 /**
- * efivar_run_worker - schedule the efivar worker thread
- */
-void efivar_run_worker(void)
-{
-	if (efivar_wq_enabled)
-		schedule_work(&efivar_work);
-}
-EXPORT_SYMBOL_GPL(efivar_run_worker);
-
-/**
  * efivars_register - register an efivars
  * @efivars: efivars to register
  * @ops: efivars operations
diff --git a/drivers/firmware/efi/x86_fake_mem.c b/drivers/firmware/efi/x86_fake_mem.c
index e5d6d5a1b240..0bafcc1bb0f6 100644
--- a/drivers/firmware/efi/x86_fake_mem.c
+++ b/drivers/firmware/efi/x86_fake_mem.c
@@ -38,7 +38,7 @@ void __init efi_fake_memmap_early(void)
 		m_start = mem->range.start;
 		m_end = mem->range.end;
 		for_each_efi_memory_desc(md) {
-			u64 start, end;
+			u64 start, end, size;
 
 			if (md->type != EFI_CONVENTIONAL_MEMORY)
 				continue;
@@ -58,11 +58,17 @@ void __init efi_fake_memmap_early(void)
 			 */
 			start = max(start, m_start);
 			end = min(end, m_end);
+			size = end - start + 1;
 
 			if (end <= start)
 				continue;
-			e820__range_update(start, end - start + 1, E820_TYPE_RAM,
-					E820_TYPE_SOFT_RESERVED);
+
+			/*
+			 * Ensure each efi_fake_mem instance results in
+			 * a unique e820 resource
+			 */
+			e820__range_remove(start, size, E820_TYPE_RAM, 1);
+			e820__range_add(start, size, E820_TYPE_SOFT_RESERVED);
 			e820__update_table(e820_table);
 		}
 	}
diff --git a/drivers/firmware/google/Kconfig b/drivers/firmware/google/Kconfig
index a3a6ca659ffa..97968aece54f 100644
--- a/drivers/firmware/google/Kconfig
+++ b/drivers/firmware/google/Kconfig
@@ -15,7 +15,7 @@ config GOOGLE_SMI
 	help
 	  Say Y here if you want to enable SMI callbacks for Google
 	  platforms.  This provides an interface for writing to and
-	  clearing the event log.  If EFI_VARS is also enabled this
+	  clearing the event log.  If CONFIG_EFI is also enabled this
 	  driver provides an interface for reading and writing NVRAM
 	  variables.
 
diff --git a/drivers/firmware/google/gsmi.c b/drivers/firmware/google/gsmi.c
index 5b2011ebbe26..7d9367b22010 100644
--- a/drivers/firmware/google/gsmi.c
+++ b/drivers/firmware/google/gsmi.c
@@ -302,7 +302,7 @@ static int gsmi_exec(u8 func, u8 sub)
 	return rc;
 }
 
-#ifdef CONFIG_EFI_VARS
+#ifdef CONFIG_EFI
 
 static struct efivars efivars;
 
@@ -483,7 +483,7 @@ static const struct efivar_operations efivar_ops = {
 	.get_next_variable = gsmi_get_next_variable,
 };
 
-#endif /* CONFIG_EFI_VARS */
+#endif /* CONFIG_EFI */
 
 static ssize_t eventlog_write(struct file *filp, struct kobject *kobj,
 			       struct bin_attribute *bin_attr,
@@ -1007,7 +1007,7 @@ static __init int gsmi_init(void)
 		goto out_remove_bin_file;
 	}
 
-#ifdef CONFIG_EFI_VARS
+#ifdef CONFIG_EFI
 	ret = efivars_register(&efivars, &efivar_ops, gsmi_kobj);
 	if (ret) {
 		printk(KERN_INFO "gsmi: Failed to register efivars\n");
@@ -1047,7 +1047,7 @@ static void __exit gsmi_exit(void)
 	unregister_die_notifier(&gsmi_die_notifier);
 	atomic_notifier_chain_unregister(&panic_notifier_list,
 					 &gsmi_panic_notifier);
-#ifdef CONFIG_EFI_VARS
+#ifdef CONFIG_EFI
 	efivars_unregister(&efivars);
 #endif
 
diff --git a/drivers/firmware/imx/scu-pd.c b/drivers/firmware/imx/scu-pd.c
index af3d6d9ead28..946eea292b52 100644
--- a/drivers/firmware/imx/scu-pd.c
+++ b/drivers/firmware/imx/scu-pd.c
@@ -46,6 +46,7 @@
 
 #include <dt-bindings/firmware/imx/rsrc.h>
 #include <linux/firmware/imx/sci.h>
+#include <linux/firmware/imx/svc/rm.h>
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/of.h>
@@ -256,6 +257,9 @@ imx_scu_add_pm_domain(struct device *dev, int idx,
 	struct imx_sc_pm_domain *sc_pd;
 	int ret;
 
+	if (!imx_sc_rm_is_resource_owned(pm_ipc_handle, pd_ranges->rsrc + idx))
+		return NULL;
+
 	sc_pd = devm_kzalloc(dev, sizeof(*sc_pd), GFP_KERNEL);
 	if (!sc_pd)
 		return ERR_PTR(-ENOMEM);
diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index 92013ecc2d9e..00af99b6f97c 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -151,12 +151,15 @@ static u32 psci_get_version(void)
 	return invoke_psci_fn(PSCI_0_2_FN_PSCI_VERSION, 0, 0, 0);
 }
 
-int psci_set_osi_mode(void)
+int psci_set_osi_mode(bool enable)
 {
+	unsigned long suspend_mode;
 	int err;
 
-	err = invoke_psci_fn(PSCI_1_0_FN_SET_SUSPEND_MODE,
-			     PSCI_1_0_SUSPEND_MODE_OSI, 0, 0);
+	suspend_mode = enable ? PSCI_1_0_SUSPEND_MODE_OSI :
+			PSCI_1_0_SUSPEND_MODE_PC;
+
+	err = invoke_psci_fn(PSCI_1_0_FN_SET_SUSPEND_MODE, suspend_mode, 0, 0);
 	return psci_to_linux_errno(err);
 }
 
@@ -546,8 +549,7 @@ static int __init psci_1_0_init(struct device_node *np)
 		pr_info("OSI mode supported.\n");
 
 		/* Default to PC mode. */
-		invoke_psci_fn(PSCI_1_0_FN_SET_SUSPEND_MODE,
-			       PSCI_1_0_SUSPEND_MODE_PC, 0, 0);
+		psci_set_osi_mode(false);
 	}
 
 	return 0;
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index e8bbf2d38ae7..7be48c1bec96 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -756,6 +756,30 @@ int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare)
 }
 EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_init);
 
+int qcom_scm_mem_protect_video_var(u32 cp_start, u32 cp_size,
+				   u32 cp_nonpixel_start,
+				   u32 cp_nonpixel_size)
+{
+	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_MP,
+		.cmd = QCOM_SCM_MP_VIDEO_VAR,
+		.arginfo = QCOM_SCM_ARGS(4, QCOM_SCM_VAL, QCOM_SCM_VAL,
+					 QCOM_SCM_VAL, QCOM_SCM_VAL),
+		.args[0] = cp_start,
+		.args[1] = cp_size,
+		.args[2] = cp_nonpixel_start,
+		.args[3] = cp_nonpixel_size,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+
+	return ret ? : res.result[0];
+}
+EXPORT_SYMBOL(qcom_scm_mem_protect_video_var);
+
 static int __qcom_scm_assign_mem(struct device *dev, phys_addr_t mem_region,
 				 size_t mem_sz, phys_addr_t src, size_t src_sz,
 				 phys_addr_t dest, size_t dest_sz)
diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
index 38ea614d29fe..95cd1ac30ab0 100644
--- a/drivers/firmware/qcom_scm.h
+++ b/drivers/firmware/qcom_scm.h
@@ -97,6 +97,7 @@ extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
 #define QCOM_SCM_MP_RESTORE_SEC_CFG		0x02
 #define QCOM_SCM_MP_IOMMU_SECURE_PTBL_SIZE	0x03
 #define QCOM_SCM_MP_IOMMU_SECURE_PTBL_INIT	0x04
+#define QCOM_SCM_MP_VIDEO_VAR			0x08
 #define QCOM_SCM_MP_ASSIGN			0x16
 
 #define QCOM_SCM_SVC_OCMEM		0x0f
diff --git a/drivers/firmware/qemu_fw_cfg.c b/drivers/firmware/qemu_fw_cfg.c
index 6945c3c96637..0078260fbabe 100644
--- a/drivers/firmware/qemu_fw_cfg.c
+++ b/drivers/firmware/qemu_fw_cfg.c
@@ -215,6 +215,9 @@ static void fw_cfg_io_cleanup(void)
 #  define FW_CFG_CTRL_OFF 0x08
 #  define FW_CFG_DATA_OFF 0x00
 #  define FW_CFG_DMA_OFF 0x10
+# elif defined(CONFIG_PARISC)	/* parisc */
+#  define FW_CFG_CTRL_OFF 0x00
+#  define FW_CFG_DATA_OFF 0x04
 # elif (defined(CONFIG_PPC_PMAC) || defined(CONFIG_SPARC32)) /* ppc/mac,sun4m */
 #  define FW_CFG_CTRL_OFF 0x00
 #  define FW_CFG_DATA_OFF 0x02
diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
index 8f2fb4c562da..2371d08bdd17 100644
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -12,8 +12,6 @@
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
 #include <soc/bcm2835/raspberrypi-firmware.h>
 
 #define MBOX_MSG(chan, data28)		(((data28) & ~0xf) | ((chan) & 0xf))
@@ -21,8 +19,6 @@
 #define MBOX_DATA28(msg)		((msg) & ~0xf)
 #define MBOX_CHAN_PROPERTY		8
 
-#define VL805_PCI_CONFIG_VERSION_OFFSET		0x50
-
 static struct platform_device *rpi_hwmon;
 static struct platform_device *rpi_clk;
 
@@ -301,63 +297,6 @@ struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
 }
 EXPORT_SYMBOL_GPL(rpi_firmware_get);
 
-/*
- * The Raspberry Pi 4 gets its USB functionality from VL805, a PCIe chip that
- * implements xHCI. After a PCI reset, VL805's firmware may either be loaded
- * directly from an EEPROM or, if not present, by the SoC's co-processor,
- * VideoCore. RPi4's VideoCore OS contains both the non public firmware load
- * logic and the VL805 firmware blob. This function triggers the aforementioned
- * process.
- */
-int rpi_firmware_init_vl805(struct pci_dev *pdev)
-{
-	struct device_node *fw_np;
-	struct rpi_firmware *fw;
-	u32 dev_addr, version;
-	int ret;
-
-	fw_np = of_find_compatible_node(NULL, NULL,
-					"raspberrypi,bcm2835-firmware");
-	if (!fw_np)
-		return 0;
-
-	fw = rpi_firmware_get(fw_np);
-	of_node_put(fw_np);
-	if (!fw)
-		return -ENODEV;
-
-	/*
-	 * Make sure we don't trigger a firmware load unnecessarily.
-	 *
-	 * If something went wrong with PCI, this whole exercise would be
-	 * futile as VideoCore expects from us a configured PCI bus. Just take
-	 * the faulty version (likely ~0) and let xHCI's registration fail
-	 * further down the line.
-	 */
-	pci_read_config_dword(pdev, VL805_PCI_CONFIG_VERSION_OFFSET, &version);
-	if (version)
-		goto exit;
-
-	dev_addr = pdev->bus->number << 20 | PCI_SLOT(pdev->devfn) << 15 |
-		   PCI_FUNC(pdev->devfn) << 12;
-
-	ret = rpi_firmware_property(fw, RPI_FIRMWARE_NOTIFY_XHCI_RESET,
-				    &dev_addr, sizeof(dev_addr));
-	if (ret)
-		return ret;
-
-	/* Wait for vl805 to startup */
-	usleep_range(200, 1000);
-
-	pci_read_config_dword(pdev, VL805_PCI_CONFIG_VERSION_OFFSET,
-			      &version);
-exit:
-	pci_info(pdev, "VL805 firmware version %08x\n", version);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(rpi_firmware_init_vl805);
-
 static const struct of_device_id rpi_firmware_of_match[] = {
 	{ .compatible = "raspberrypi,bcm2835-firmware", },
 	{},
diff --git a/drivers/firmware/smccc/smccc.c b/drivers/firmware/smccc/smccc.c
index 4e80921ee212..00c88b809c0c 100644
--- a/drivers/firmware/smccc/smccc.c
+++ b/drivers/firmware/smccc/smccc.c
@@ -24,8 +24,10 @@ enum arm_smccc_conduit arm_smccc_1_1_get_conduit(void)
 
 	return smccc_conduit;
 }
+EXPORT_SYMBOL_GPL(arm_smccc_1_1_get_conduit);
 
 u32 arm_smccc_get_version(void)
 {
 	return smccc_version;
 }
+EXPORT_SYMBOL_GPL(arm_smccc_get_version);
diff --git a/drivers/firmware/tegra/bpmp.c b/drivers/firmware/tegra/bpmp.c
index 4d93d8925e14..0742a90cb844 100644
--- a/drivers/firmware/tegra/bpmp.c
+++ b/drivers/firmware/tegra/bpmp.c
@@ -856,7 +856,8 @@ static const struct tegra_bpmp_soc tegra210_soc = {
 
 static const struct of_device_id tegra_bpmp_match[] = {
 #if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC) || \
-    IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC)
+    IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC) || \
+    IS_ENABLED(CONFIG_ARCH_TEGRA_234_SOC)
 	{ .compatible = "nvidia,tegra186-bpmp", .data = &tegra186_soc },
 #endif
 #if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c
index 53cee17d0115..896f53ec7857 100644
--- a/drivers/firmware/ti_sci.c
+++ b/drivers/firmware/ti_sci.c
@@ -65,36 +65,18 @@ struct ti_sci_xfers_info {
 };
 
 /**
- * struct ti_sci_rm_type_map - Structure representing TISCI Resource
- *				management representation of dev_ids.
- * @dev_id:	TISCI device ID
- * @type:	Corresponding id as identified by TISCI RM.
- *
- * Note: This is used only as a work around for using RM range apis
- *	for AM654 SoC. For future SoCs dev_id will be used as type
- *	for RM range APIs. In order to maintain ABI backward compatibility
- *	type is not being changed for AM654 SoC.
- */
-struct ti_sci_rm_type_map {
-	u32 dev_id;
-	u16 type;
-};
-
-/**
  * struct ti_sci_desc - Description of SoC integration
  * @default_host_id:	Host identifier representing the compute entity
  * @max_rx_timeout_ms:	Timeout for communication with SoC (in Milliseconds)
  * @max_msgs: Maximum number of messages that can be pending
  *		  simultaneously in the system
  * @max_msg_size: Maximum size of data per message that can be handled.
- * @rm_type_map: RM resource type mapping structure.
  */
 struct ti_sci_desc {
 	u8 default_host_id;
 	int max_rx_timeout_ms;
 	int max_msgs;
 	int max_msg_size;
-	struct ti_sci_rm_type_map *rm_type_map;
 };
 
 /**
@@ -1124,7 +1106,8 @@ static int ti_sci_cmd_get_clock(const struct ti_sci_handle *handle, u32 dev_id,
 static int ti_sci_cmd_idle_clock(const struct ti_sci_handle *handle,
 				 u32 dev_id, u32 clk_id)
 {
-	return ti_sci_set_clock_state(handle, dev_id, clk_id, 0,
+	return ti_sci_set_clock_state(handle, dev_id, clk_id,
+				      MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE,
 				      MSG_CLOCK_SW_STATE_UNREQ);
 }
 
@@ -1143,7 +1126,8 @@ static int ti_sci_cmd_idle_clock(const struct ti_sci_handle *handle,
 static int ti_sci_cmd_put_clock(const struct ti_sci_handle *handle,
 				u32 dev_id, u32 clk_id)
 {
-	return ti_sci_set_clock_state(handle, dev_id, clk_id, 0,
+	return ti_sci_set_clock_state(handle, dev_id, clk_id,
+				      MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE,
 				      MSG_CLOCK_SW_STATE_AUTO);
 }
 
@@ -1710,33 +1694,6 @@ fail:
 	return ret;
 }
 
-static int ti_sci_get_resource_type(struct ti_sci_info *info, u16 dev_id,
-				    u16 *type)
-{
-	struct ti_sci_rm_type_map *rm_type_map = info->desc->rm_type_map;
-	bool found = false;
-	int i;
-
-	/* If map is not provided then assume dev_id is used as type */
-	if (!rm_type_map) {
-		*type = dev_id;
-		return 0;
-	}
-
-	for (i = 0; rm_type_map[i].dev_id; i++) {
-		if (rm_type_map[i].dev_id == dev_id) {
-			*type = rm_type_map[i].type;
-			found = true;
-			break;
-		}
-	}
-
-	if (!found)
-		return -EINVAL;
-
-	return 0;
-}
-
 /**
  * ti_sci_get_resource_range - Helper to get a range of resources assigned
  *			       to a host. Resource is uniquely identified by
@@ -1760,7 +1717,6 @@ static int ti_sci_get_resource_range(const struct ti_sci_handle *handle,
 	struct ti_sci_xfer *xfer;
 	struct ti_sci_info *info;
 	struct device *dev;
-	u16 type;
 	int ret = 0;
 
 	if (IS_ERR(handle))
@@ -1780,15 +1736,9 @@ static int ti_sci_get_resource_range(const struct ti_sci_handle *handle,
 		return ret;
 	}
 
-	ret = ti_sci_get_resource_type(info, dev_id, &type);
-	if (ret) {
-		dev_err(dev, "rm type lookup failed for %u\n", dev_id);
-		goto fail;
-	}
-
 	req = (struct ti_sci_msg_req_get_resource_range *)xfer->xfer_buf;
 	req->secondary_host = s_host;
-	req->type = type & MSG_RM_RESOURCE_TYPE_MASK;
+	req->type = dev_id & MSG_RM_RESOURCE_TYPE_MASK;
 	req->subtype = subtype & MSG_RM_RESOURCE_SUBTYPE_MASK;
 
 	ret = ti_sci_do_xfer(info, xfer);
@@ -3260,61 +3210,50 @@ u32 ti_sci_get_num_resources(struct ti_sci_resource *res)
 EXPORT_SYMBOL_GPL(ti_sci_get_num_resources);
 
 /**
- * devm_ti_sci_get_of_resource() - Get a TISCI resource assigned to a device
+ * devm_ti_sci_get_resource_sets() - Get a TISCI resources assigned to a device
  * @handle:	TISCI handle
  * @dev:	Device pointer to which the resource is assigned
  * @dev_id:	TISCI device id to which the resource is assigned
- * @of_prop:	property name by which the resource are represented
+ * @sub_types:	Array of sub_types assigned corresponding to device
+ * @sets:	Number of sub_types
  *
  * Return: Pointer to ti_sci_resource if all went well else appropriate
  *	   error pointer.
  */
-struct ti_sci_resource *
-devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle,
-			    struct device *dev, u32 dev_id, char *of_prop)
+static struct ti_sci_resource *
+devm_ti_sci_get_resource_sets(const struct ti_sci_handle *handle,
+			      struct device *dev, u32 dev_id, u32 *sub_types,
+			      u32 sets)
 {
 	struct ti_sci_resource *res;
 	bool valid_set = false;
-	u32 resource_subtype;
 	int i, ret;
 
 	res = devm_kzalloc(dev, sizeof(*res), GFP_KERNEL);
 	if (!res)
 		return ERR_PTR(-ENOMEM);
 
-	ret = of_property_count_elems_of_size(dev_of_node(dev), of_prop,
-					      sizeof(u32));
-	if (ret < 0) {
-		dev_err(dev, "%s resource type ids not available\n", of_prop);
-		return ERR_PTR(ret);
-	}
-	res->sets = ret;
-
+	res->sets = sets;
 	res->desc = devm_kcalloc(dev, res->sets, sizeof(*res->desc),
 				 GFP_KERNEL);
 	if (!res->desc)
 		return ERR_PTR(-ENOMEM);
 
 	for (i = 0; i < res->sets; i++) {
-		ret = of_property_read_u32_index(dev_of_node(dev), of_prop, i,
-						 &resource_subtype);
-		if (ret)
-			return ERR_PTR(-EINVAL);
-
 		ret = handle->ops.rm_core_ops.get_range(handle, dev_id,
-							resource_subtype,
+							sub_types[i],
 							&res->desc[i].start,
 							&res->desc[i].num);
 		if (ret) {
 			dev_dbg(dev, "dev = %d subtype %d not allocated for this host\n",
-				dev_id, resource_subtype);
+				dev_id, sub_types[i]);
 			res->desc[i].start = 0;
 			res->desc[i].num = 0;
 			continue;
 		}
 
 		dev_dbg(dev, "dev = %d, subtype = %d, start = %d, num = %d\n",
-			dev_id, resource_subtype, res->desc[i].start,
+			dev_id, sub_types[i], res->desc[i].start,
 			res->desc[i].num);
 
 		valid_set = true;
@@ -3332,6 +3271,62 @@ devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle,
 	return ERR_PTR(-EINVAL);
 }
 
+/**
+ * devm_ti_sci_get_of_resource() - Get a TISCI resource assigned to a device
+ * @handle:	TISCI handle
+ * @dev:	Device pointer to which the resource is assigned
+ * @dev_id:	TISCI device id to which the resource is assigned
+ * @of_prop:	property name by which the resource are represented
+ *
+ * Return: Pointer to ti_sci_resource if all went well else appropriate
+ *	   error pointer.
+ */
+struct ti_sci_resource *
+devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle,
+			    struct device *dev, u32 dev_id, char *of_prop)
+{
+	struct ti_sci_resource *res;
+	u32 *sub_types;
+	int sets;
+
+	sets = of_property_count_elems_of_size(dev_of_node(dev), of_prop,
+					       sizeof(u32));
+	if (sets < 0) {
+		dev_err(dev, "%s resource type ids not available\n", of_prop);
+		return ERR_PTR(sets);
+	}
+
+	sub_types = kcalloc(sets, sizeof(*sub_types), GFP_KERNEL);
+	if (!sub_types)
+		return ERR_PTR(-ENOMEM);
+
+	of_property_read_u32_array(dev_of_node(dev), of_prop, sub_types, sets);
+	res = devm_ti_sci_get_resource_sets(handle, dev, dev_id, sub_types,
+					    sets);
+
+	kfree(sub_types);
+	return res;
+}
+EXPORT_SYMBOL_GPL(devm_ti_sci_get_of_resource);
+
+/**
+ * devm_ti_sci_get_resource() - Get a resource range assigned to the device
+ * @handle:	TISCI handle
+ * @dev:	Device pointer to which the resource is assigned
+ * @dev_id:	TISCI device id to which the resource is assigned
+ * @suub_type:	TISCI resource subytpe representing the resource.
+ *
+ * Return: Pointer to ti_sci_resource if all went well else appropriate
+ *	   error pointer.
+ */
+struct ti_sci_resource *
+devm_ti_sci_get_resource(const struct ti_sci_handle *handle, struct device *dev,
+			 u32 dev_id, u32 sub_type)
+{
+	return devm_ti_sci_get_resource_sets(handle, dev, dev_id, &sub_type, 1);
+}
+EXPORT_SYMBOL_GPL(devm_ti_sci_get_resource);
+
 static int tisci_reboot_handler(struct notifier_block *nb, unsigned long mode,
 				void *cmd)
 {
@@ -3352,17 +3347,6 @@ static const struct ti_sci_desc ti_sci_pmmc_k2g_desc = {
 	/* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */
 	.max_msgs = 20,
 	.max_msg_size = 64,
-	.rm_type_map = NULL,
-};
-
-static struct ti_sci_rm_type_map ti_sci_am654_rm_type_map[] = {
-	{.dev_id = 56, .type = 0x00b}, /* GIC_IRQ */
-	{.dev_id = 179, .type = 0x000}, /* MAIN_NAV_UDMASS_IA0 */
-	{.dev_id = 187, .type = 0x009}, /* MAIN_NAV_RA */
-	{.dev_id = 188, .type = 0x006}, /* MAIN_NAV_UDMAP */
-	{.dev_id = 194, .type = 0x007}, /* MCU_NAV_UDMAP */
-	{.dev_id = 195, .type = 0x00a}, /* MCU_NAV_RA */
-	{.dev_id = 0, .type = 0x000}, /* end of table */
 };
 
 /* Description for AM654 */
@@ -3373,7 +3357,6 @@ static const struct ti_sci_desc ti_sci_pmmc_am654_desc = {
 	/* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */
 	.max_msgs = 20,
 	.max_msg_size = 60,
-	.rm_type_map = ti_sci_am654_rm_type_map,
 };
 
 static const struct of_device_id ti_sci_of_match[] = {
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 8d1ff2454e2e..efb8a66efc68 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -147,6 +147,9 @@ static int zynqmp_pm_feature(u32 api_id)
 		return 0;
 
 	/* Return value if feature is already checked */
+	if (api_id > ARRAY_SIZE(zynqmp_pm_features))
+		return PM_FEATURE_INVALID;
+
 	if (zynqmp_pm_features[api_id] != PM_FEATURE_UNCHECKED)
 		return zynqmp_pm_features[api_id];