Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC-related driver updates from Olof Johansson:
 "Various driver updates for platforms:

   - Nvidia: Fuse support for Tegra194, continued memory controller
     pieces for Tegra30

   - NXP/FSL: Refactorings of QuickEngine drivers to support
     ARM/ARM64/PPC

   - NXP/FSL: i.MX8MP SoC driver pieces

   - TI Keystone: ring accelerator driver

   - Qualcomm: SCM driver cleanup/refactoring + support for new SoCs.

   - Xilinx ZynqMP: feature checking interface for firmware. Mailbox
     communication for power management

   - Overall support patch set for cpuidle on more complex hierarchies
     (PSCI-based)

  and misc cleanups, refactorings of Marvell, TI, other platforms"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (166 commits)
  drivers: soc: xilinx: Use mailbox IPI callback
  dt-bindings: power: reset: xilinx: Add bindings for ipi mailbox
  drivers: soc: ti: knav_qmss_queue: Pass lockdep expression to RCU lists
  MAINTAINERS: Add brcmstb PCIe controller entry
  soc/tegra: fuse: Unmap registers once they are not needed anymore
  soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
  soc/tegra: fuse: Warn if straps are not ready
  soc/tegra: fuse: Cache values of straps and Chip ID registers
  memory: tegra30-emc: Correct error message for timed out auto calibration
  memory: tegra30-emc: Firm up hardware programming sequence
  memory: tegra30-emc: Firm up suspend/resume sequence
  soc/tegra: regulators: Do nothing if voltage is unchanged
  memory: tegra: Correct reset value of xusb_hostr
  soc/tegra: fuse: Add APB DMA dependency for Tegra20
  bus: tegra-aconnect: Remove PM_CLK dependency
  dt-bindings: mediatek: add MT6765 power dt-bindings
  soc: mediatek: cmdq: delete not used define
  memory: tegra: Add support for the Tegra194 memory controller
  memory: tegra: Only include support for enabled SoCs
  memory: tegra: Support DVFS on Tegra186 and later
  ...

21 files changed, 1371 insertions, 1535 deletions

diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index e40a77bfe821..ea869addc89b 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -239,14 +239,6 @@ config QCOM_SCM
 	depends on ARM || ARM64
 	select RESET_CONTROLLER
 
-config QCOM_SCM_32
-	def_bool y
-	depends on QCOM_SCM && ARM
-
-config QCOM_SCM_64
-	def_bool y
-	depends on QCOM_SCM && ARM64
-
 config QCOM_SCM_DOWNLOAD_MODE_DEFAULT
 	bool "Qualcomm download mode enabled by default"
 	depends on QCOM_SCM
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 3fcb91975bdc..e9fb838af4df 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -17,10 +17,7 @@ obj-$(CONFIG_ISCSI_IBFT)	+= iscsi_ibft.o
 obj-$(CONFIG_FIRMWARE_MEMMAP)	+= memmap.o
 obj-$(CONFIG_RASPBERRYPI_FIRMWARE) += raspberrypi.o
 obj-$(CONFIG_FW_CFG_SYSFS)	+= qemu_fw_cfg.o
-obj-$(CONFIG_QCOM_SCM)		+= qcom_scm.o
-obj-$(CONFIG_QCOM_SCM_64)	+= qcom_scm-64.o
-obj-$(CONFIG_QCOM_SCM_32)	+= qcom_scm-32.o
-CFLAGS_qcom_scm-32.o :=$(call as-instr,.arch armv7-a\n.arch_extension sec,-DREQUIRES_SEC=1) -march=armv7-a
+obj-$(CONFIG_QCOM_SCM)		+= qcom_scm.o qcom_scm-smc.o qcom_scm-legacy.o
 obj-$(CONFIG_TI_SCI_PROTOCOL)	+= ti_sci.o
 obj-$(CONFIG_TRUSTED_FOUNDATIONS) += trusted_foundations.o
 obj-$(CONFIG_TURRIS_MOX_RWTM)	+= turris-mox-rwtm.o
diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c
index 7a30952b463d..db55c43a2cbd 100644
--- a/drivers/firmware/arm_scmi/bus.c
+++ b/drivers/firmware/arm_scmi/bus.c
@@ -28,8 +28,12 @@ scmi_dev_match_id(struct scmi_device *scmi_dev, struct scmi_driver *scmi_drv)
 		return NULL;
 
 	for (; id->protocol_id; id++)
-		if (id->protocol_id == scmi_dev->protocol_id)
-			return id;
+		if (id->protocol_id == scmi_dev->protocol_id) {
+			if (!id->name)
+				return id;
+			else if (!strcmp(id->name, scmi_dev->name))
+				return id;
+		}
 
 	return NULL;
 }
@@ -56,6 +60,11 @@ static int scmi_protocol_init(int protocol_id, struct scmi_handle *handle)
 	return fn(handle);
 }
 
+static int scmi_protocol_dummy_init(struct scmi_handle *handle)
+{
+	return 0;
+}
+
 static int scmi_dev_probe(struct device *dev)
 {
 	struct scmi_driver *scmi_drv = to_scmi_driver(dev->driver);
@@ -74,6 +83,10 @@ static int scmi_dev_probe(struct device *dev)
 	if (ret)
 		return ret;
 
+	/* Skip protocol initialisation for additional devices */
+	idr_replace(&scmi_protocols, &scmi_protocol_dummy_init,
+		    scmi_dev->protocol_id);
+
 	return scmi_drv->probe(scmi_dev);
 }
 
@@ -125,7 +138,8 @@ static void scmi_device_release(struct device *dev)
 }
 
 struct scmi_device *
-scmi_device_create(struct device_node *np, struct device *parent, int protocol)
+scmi_device_create(struct device_node *np, struct device *parent, int protocol,
+		   const char *name)
 {
 	int id, retval;
 	struct scmi_device *scmi_dev;
@@ -134,8 +148,15 @@ scmi_device_create(struct device_node *np, struct device *parent, int protocol)
 	if (!scmi_dev)
 		return NULL;
 
+	scmi_dev->name = kstrdup_const(name ?: "unknown", GFP_KERNEL);
+	if (!scmi_dev->name) {
+		kfree(scmi_dev);
+		return NULL;
+	}
+
 	id = ida_simple_get(&scmi_bus_id, 1, 0, GFP_KERNEL);
 	if (id < 0) {
+		kfree_const(scmi_dev->name);
 		kfree(scmi_dev);
 		return NULL;
 	}
@@ -154,6 +175,7 @@ scmi_device_create(struct device_node *np, struct device *parent, int protocol)
 
 	return scmi_dev;
 put_dev:
+	kfree_const(scmi_dev->name);
 	put_device(&scmi_dev->dev);
 	ida_simple_remove(&scmi_bus_id, id);
 	return NULL;
@@ -161,6 +183,7 @@ put_dev:
 
 void scmi_device_destroy(struct scmi_device *scmi_dev)
 {
+	kfree_const(scmi_dev->name);
 	scmi_handle_put(scmi_dev->handle);
 	ida_simple_remove(&scmi_bus_id, scmi_dev->id);
 	device_unregister(&scmi_dev->dev);
diff --git a/drivers/firmware/arm_scmi/clock.c b/drivers/firmware/arm_scmi/clock.c
index 32526a793f3a..4c2227662b26 100644
--- a/drivers/firmware/arm_scmi/clock.c
+++ b/drivers/firmware/arm_scmi/clock.c
@@ -65,6 +65,7 @@ struct scmi_clock_set_rate {
 };
 
 struct clock_info {
+	u32 version;
 	int num_clocks;
 	int max_async_req;
 	atomic_t cur_async_req;
@@ -340,6 +341,7 @@ static int scmi_clock_protocol_init(struct scmi_handle *handle)
 			scmi_clock_describe_rates_get(handle, clkid, clk);
 	}
 
+	cinfo->version = version;
 	handle->clk_ops = &clk_ops;
 	handle->clk_priv = cinfo;
 
diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h
index 5237c2ff79fe..df35358ff324 100644
--- a/drivers/firmware/arm_scmi/common.h
+++ b/drivers/firmware/arm_scmi/common.h
@@ -81,6 +81,7 @@ struct scmi_msg {
 /**
  * struct scmi_xfer - Structure representing a message flow
  *
+ * @transfer_id: Unique ID for debug & profiling purpose
  * @hdr: Transmit message header
  * @tx: Transmit message
  * @rx: Receive message, the buffer should be pre-allocated to store
@@ -90,6 +91,7 @@ struct scmi_msg {
  * @async: pointer to delayed response message received event completion
  */
 struct scmi_xfer {
+	int transfer_id;
 	struct scmi_msg_hdr hdr;
 	struct scmi_msg tx;
 	struct scmi_msg rx;
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 3eb0382491ce..2c96f6b5a7d8 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -29,6 +29,9 @@
 
 #include "common.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/scmi.h>
+
 #define MSG_ID_MASK		GENMASK(7, 0)
 #define MSG_XTRACT_ID(hdr)	FIELD_GET(MSG_ID_MASK, (hdr))
 #define MSG_TYPE_MASK		GENMASK(9, 8)
@@ -61,6 +64,8 @@ enum scmi_error_codes {
 static LIST_HEAD(scmi_list);
 /* Protection for the entire list */
 static DEFINE_MUTEX(scmi_list_mutex);
+/* Track the unique id for the transfers for debug & profiling purpose */
+static atomic_t transfer_last_id;
 
 /**
  * struct scmi_xfers_info - Structure to manage transfer information
@@ -304,6 +309,7 @@ static struct scmi_xfer *scmi_xfer_get(const struct scmi_handle *handle,
 	xfer = &minfo->xfer_block[xfer_id];
 	xfer->hdr.seq = xfer_id;
 	reinit_completion(&xfer->done);
+	xfer->transfer_id = atomic_inc_return(&transfer_last_id);
 
 	return xfer;
 }
@@ -374,6 +380,10 @@ static void scmi_rx_callback(struct mbox_client *cl, void *m)
 
 	scmi_fetch_response(xfer, mem);
 
+	trace_scmi_rx_done(xfer->transfer_id, xfer->hdr.id,
+			   xfer->hdr.protocol_id, xfer->hdr.seq,
+			   msg_type);
+
 	if (msg_type == MSG_TYPE_DELAYED_RESP)
 		complete(xfer->async_done);
 	else
@@ -439,6 +449,10 @@ int scmi_do_xfer(const struct scmi_handle *handle, struct scmi_xfer *xfer)
 	if (unlikely(!cinfo))
 		return -EINVAL;
 
+	trace_scmi_xfer_begin(xfer->transfer_id, xfer->hdr.id,
+			      xfer->hdr.protocol_id, xfer->hdr.seq,
+			      xfer->hdr.poll_completion);
+
 	ret = mbox_send_message(cinfo->chan, xfer);
 	if (ret < 0) {
 		dev_dbg(dev, "mbox send fail %d\n", ret);
@@ -478,6 +492,10 @@ int scmi_do_xfer(const struct scmi_handle *handle, struct scmi_xfer *xfer)
 	 */
 	mbox_client_txdone(cinfo->chan, ret);
 
+	trace_scmi_xfer_end(xfer->transfer_id, xfer->hdr.id,
+			    xfer->hdr.protocol_id, xfer->hdr.seq,
+			    xfer->hdr.status);
+
 	return ret;
 }
 
@@ -735,6 +753,11 @@ static int scmi_mbox_chan_setup(struct scmi_info *info, struct device *dev,
 	idx = tx ? 0 : 1;
 	idr = tx ? &info->tx_idr : &info->rx_idr;
 
+	/* check if already allocated, used for multiple device per protocol */
+	cinfo = idr_find(idr, prot_id);
+	if (cinfo)
+		return 0;
+
 	if (scmi_mailbox_check(np, idx)) {
 		cinfo = idr_find(idr, SCMI_PROTOCOL_BASE);
 		if (unlikely(!cinfo)) /* Possible only if platform has no Rx */
@@ -803,11 +826,11 @@ scmi_mbox_txrx_setup(struct scmi_info *info, struct device *dev, int prot_id)
 
 static inline void
 scmi_create_protocol_device(struct device_node *np, struct scmi_info *info,
-			    int prot_id)
+			    int prot_id, const char *name)
 {
 	struct scmi_device *sdev;
 
-	sdev = scmi_device_create(np, info->dev, prot_id);
+	sdev = scmi_device_create(np, info->dev, prot_id, name);
 	if (!sdev) {
 		dev_err(info->dev, "failed to create %d protocol device\n",
 			prot_id);
@@ -824,6 +847,40 @@ scmi_create_protocol_device(struct device_node *np, struct scmi_info *info,
 	scmi_set_handle(sdev);
 }
 
+#define MAX_SCMI_DEV_PER_PROTOCOL	2
+struct scmi_prot_devnames {
+	int protocol_id;
+	char *names[MAX_SCMI_DEV_PER_PROTOCOL];
+};
+
+static struct scmi_prot_devnames devnames[] = {
+	{ SCMI_PROTOCOL_POWER,  { "genpd" },},
+	{ SCMI_PROTOCOL_PERF,   { "cpufreq" },},
+	{ SCMI_PROTOCOL_CLOCK,  { "clocks" },},
+	{ SCMI_PROTOCOL_SENSOR, { "hwmon" },},
+	{ SCMI_PROTOCOL_RESET,  { "reset" },},
+};
+
+static inline void
+scmi_create_protocol_devices(struct device_node *np, struct scmi_info *info,
+			     int prot_id)
+{
+	int loop, cnt;
+
+	for (loop = 0; loop < ARRAY_SIZE(devnames); loop++) {
+		if (devnames[loop].protocol_id != prot_id)
+			continue;
+
+		for (cnt = 0; cnt < ARRAY_SIZE(devnames[loop].names); cnt++) {
+			const char *name = devnames[loop].names[cnt];
+
+			if (name)
+				scmi_create_protocol_device(np, info, prot_id,
+							    name);
+		}
+	}
+}
+
 static int scmi_probe(struct platform_device *pdev)
 {
 	int ret;
@@ -892,7 +949,7 @@ static int scmi_probe(struct platform_device *pdev)
 			continue;
 		}
 
-		scmi_create_protocol_device(child, info, prot_id);
+		scmi_create_protocol_devices(child, info, prot_id);
 	}
 
 	return 0;
@@ -940,6 +997,52 @@ static int scmi_remove(struct platform_device *pdev)
 	return ret;
 }
 
+static ssize_t protocol_version_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	struct scmi_info *info = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%u.%u\n", info->version.major_ver,
+		       info->version.minor_ver);
+}
+static DEVICE_ATTR_RO(protocol_version);
+
+static ssize_t firmware_version_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	struct scmi_info *info = dev_get_drvdata(dev);
+
+	return sprintf(buf, "0x%x\n", info->version.impl_ver);
+}
+static DEVICE_ATTR_RO(firmware_version);
+
+static ssize_t vendor_id_show(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	struct scmi_info *info = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%s\n", info->version.vendor_id);
+}
+static DEVICE_ATTR_RO(vendor_id);
+
+static ssize_t sub_vendor_id_show(struct device *dev,
+				  struct device_attribute *attr, char *buf)
+{
+	struct scmi_info *info = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%s\n", info->version.sub_vendor_id);
+}
+static DEVICE_ATTR_RO(sub_vendor_id);
+
+static struct attribute *versions_attrs[] = {
+	&dev_attr_firmware_version.attr,
+	&dev_attr_protocol_version.attr,
+	&dev_attr_vendor_id.attr,
+	&dev_attr_sub_vendor_id.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(versions);
+
 static const struct scmi_desc scmi_generic_desc = {
 	.max_rx_timeout_ms = 30,	/* We may increase this if required */
 	.max_msg = 20,		/* Limited by MBOX_TX_QUEUE_LEN */
@@ -958,6 +1061,7 @@ static struct platform_driver scmi_driver = {
 	.driver = {
 		   .name = "arm-scmi",
 		   .of_match_table = scmi_of_match,
+		   .dev_groups = versions_groups,
 		   },
 	.probe = scmi_probe,
 	.remove = scmi_remove,
diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index 601af4edad5e..ec81e6f7e7a4 100644
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/drivers/firmware/arm_scmi/perf.c
@@ -145,6 +145,7 @@ struct perf_dom_info {
 };
 
 struct scmi_perf_info {
+	u32 version;
 	int num_domains;
 	bool power_scale_mw;
 	u64 stats_addr;
@@ -736,6 +737,7 @@ static int scmi_perf_protocol_init(struct scmi_handle *handle)
 			scmi_perf_domain_init_fc(handle, domain, &dom->fc_info);
 	}
 
+	pinfo->version = version;
 	handle->perf_ops = &perf_ops;
 	handle->perf_priv = pinfo;
 
diff --git a/drivers/firmware/arm_scmi/power.c b/drivers/firmware/arm_scmi/power.c
index 5abef7079c0a..214886ce84f1 100644
--- a/drivers/firmware/arm_scmi/power.c
+++ b/drivers/firmware/arm_scmi/power.c
@@ -50,6 +50,7 @@ struct power_dom_info {
 };
 
 struct scmi_power_info {
+	u32 version;
 	int num_domains;
 	u64 stats_addr;
 	u32 stats_size;
@@ -207,6 +208,7 @@ static int scmi_power_protocol_init(struct scmi_handle *handle)
 		scmi_power_domain_attributes_get(handle, domain, dom);
 	}
 
+	pinfo->version = version;
 	handle->power_ops = &power_ops;
 	handle->power_priv = pinfo;
 
diff --git a/drivers/firmware/arm_scmi/reset.c b/drivers/firmware/arm_scmi/reset.c
index ab42c21c5517..de73054554f3 100644
--- a/drivers/firmware/arm_scmi/reset.c
+++ b/drivers/firmware/arm_scmi/reset.c
@@ -48,6 +48,7 @@ struct reset_dom_info {
 };
 
 struct scmi_reset_info {
+	u32 version;
 	int num_domains;
 	struct reset_dom_info *dom_info;
 };
@@ -217,6 +218,7 @@ static int scmi_reset_protocol_init(struct scmi_handle *handle)
 		scmi_reset_domain_attributes_get(handle, domain, dom);
 	}
 
+	pinfo->version = version;
 	handle->reset_ops = &reset_ops;
 	handle->reset_priv = pinfo;
 
diff --git a/drivers/firmware/arm_scmi/scmi_pm_domain.c b/drivers/firmware/arm_scmi/scmi_pm_domain.c
index 87f737e01473..bafbfe358f97 100644
--- a/drivers/firmware/arm_scmi/scmi_pm_domain.c
+++ b/drivers/firmware/arm_scmi/scmi_pm_domain.c
@@ -112,7 +112,7 @@ static int scmi_pm_domain_probe(struct scmi_device *sdev)
 }
 
 static const struct scmi_device_id scmi_id_table[] = {
-	{ SCMI_PROTOCOL_POWER },
+	{ SCMI_PROTOCOL_POWER, "genpd" },
 	{ },
 };
 MODULE_DEVICE_TABLE(scmi, scmi_id_table);
diff --git a/drivers/firmware/arm_scmi/sensors.c b/drivers/firmware/arm_scmi/sensors.c
index a400ea805fc2..eba61b9c1f53 100644
--- a/drivers/firmware/arm_scmi/sensors.c
+++ b/drivers/firmware/arm_scmi/sensors.c
@@ -68,6 +68,7 @@ struct scmi_msg_sensor_reading_get {
 };
 
 struct sensors_info {
+	u32 version;
 	int num_sensors;
 	int max_requests;
 	u64 reg_addr;
@@ -294,6 +295,7 @@ static int scmi_sensors_protocol_init(struct scmi_handle *handle)
 
 	scmi_sensor_description_get(handle, sinfo);
 
+	sinfo->version = version;
 	handle->sensor_ops = &sensor_ops;
 	handle->sensor_priv = sinfo;
 
diff --git a/drivers/firmware/imx/Kconfig b/drivers/firmware/imx/Kconfig
index 0dbee32da4c6..1d2e5b85d7ca 100644
--- a/drivers/firmware/imx/Kconfig
+++ b/drivers/firmware/imx/Kconfig
@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config IMX_DSP
-	bool "IMX DSP Protocol driver"
+	tristate "IMX DSP Protocol driver"
 	depends on IMX_MBOX
 	help
 	  This enables DSP IPC protocol between host AP (Linux)
diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index b3b6c15e7b36..2937d44b5df4 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -97,7 +97,7 @@ static inline bool psci_has_ext_power_state(void)
 				PSCI_1_0_FEATURES_CPU_SUSPEND_PF_MASK;
 }
 
-static inline bool psci_has_osi_support(void)
+bool psci_has_osi_support(void)
 {
 	return psci_cpu_suspend_feature & PSCI_1_0_OS_INITIATED;
 }
@@ -162,6 +162,15 @@ 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 err;
+
+	err = invoke_psci_fn(PSCI_1_0_FN_SET_SUSPEND_MODE,
+			     PSCI_1_0_SUSPEND_MODE_OSI, 0, 0);
+	return psci_to_linux_errno(err);
+}
+
 static int psci_cpu_suspend(u32 state, unsigned long entry_point)
 {
 	int err;
@@ -544,9 +553,14 @@ static int __init psci_1_0_init(struct device_node *np)
 	if (err)
 		return err;
 
-	if (psci_has_osi_support())
+	if (psci_has_osi_support()) {
 		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);
+	}
+
 	return 0;
 }
 
diff --git a/drivers/firmware/qcom_scm-32.c b/drivers/firmware/qcom_scm-32.c
deleted file mode 100644
index 48e2ef794ea3..000000000000
--- a/drivers/firmware/qcom_scm-32.c
+++ /dev/null
@@ -1,671 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2010,2015, The Linux Foundation. All rights reserved.
- * Copyright (C) 2015 Linaro Ltd.
- */
-
-#include <linux/slab.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/qcom_scm.h>
-#include <linux/dma-mapping.h>
-
-#include "qcom_scm.h"
-
-#define QCOM_SCM_FLAG_COLDBOOT_CPU0	0x00
-#define QCOM_SCM_FLAG_COLDBOOT_CPU1	0x01
-#define QCOM_SCM_FLAG_COLDBOOT_CPU2	0x08
-#define QCOM_SCM_FLAG_COLDBOOT_CPU3	0x20
-
-#define QCOM_SCM_FLAG_WARMBOOT_CPU0	0x04
-#define QCOM_SCM_FLAG_WARMBOOT_CPU1	0x02
-#define QCOM_SCM_FLAG_WARMBOOT_CPU2	0x10
-#define QCOM_SCM_FLAG_WARMBOOT_CPU3	0x40
-
-struct qcom_scm_entry {
-	int flag;
-	void *entry;
-};
-
-static struct qcom_scm_entry qcom_scm_wb[] = {
-	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU0 },
-	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU1 },
-	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU2 },
-	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU3 },
-};
-
-static DEFINE_MUTEX(qcom_scm_lock);
-
-/**
- * struct qcom_scm_command - one SCM command buffer
- * @len: total available memory for command and response
- * @buf_offset: start of command buffer
- * @resp_hdr_offset: start of response buffer
- * @id: command to be executed
- * @buf: buffer returned from qcom_scm_get_command_buffer()
- *
- * An SCM command is laid out in memory as follows:
- *
- *	------------------- <--- struct qcom_scm_command
- *	| command header  |
- *	------------------- <--- qcom_scm_get_command_buffer()
- *	| command buffer  |
- *	------------------- <--- struct qcom_scm_response and
- *	| response header |      qcom_scm_command_to_response()
- *	------------------- <--- qcom_scm_get_response_buffer()
- *	| response buffer |
- *	-------------------
- *
- * There can be arbitrary padding between the headers and buffers so
- * you should always use the appropriate qcom_scm_get_*_buffer() routines
- * to access the buffers in a safe manner.
- */
-struct qcom_scm_command {
-	__le32 len;
-	__le32 buf_offset;
-	__le32 resp_hdr_offset;
-	__le32 id;
-	__le32 buf[0];
-};
-
-/**
- * struct qcom_scm_response - one SCM response buffer
- * @len: total available memory for response
- * @buf_offset: start of response data relative to start of qcom_scm_response
- * @is_complete: indicates if the command has finished processing
- */
-struct qcom_scm_response {
-	__le32 len;
-	__le32 buf_offset;
-	__le32 is_complete;
-};
-
-/**
- * qcom_scm_command_to_response() - Get a pointer to a qcom_scm_response
- * @cmd: command
- *
- * Returns a pointer to a response for a command.
- */
-static inline struct qcom_scm_response *qcom_scm_command_to_response(
-		const struct qcom_scm_command *cmd)
-{
-	return (void *)cmd + le32_to_cpu(cmd->resp_hdr_offset);
-}
-
-/**
- * qcom_scm_get_command_buffer() - Get a pointer to a command buffer
- * @cmd: command
- *
- * Returns a pointer to the command buffer of a command.
- */
-static inline void *qcom_scm_get_command_buffer(const struct qcom_scm_command *cmd)
-{
-	return (void *)cmd->buf;
-}
-
-/**
- * qcom_scm_get_response_buffer() - Get a pointer to a response buffer
- * @rsp: response
- *
- * Returns a pointer to a response buffer of a response.
- */
-static inline void *qcom_scm_get_response_buffer(const struct qcom_scm_response *rsp)
-{
-	return (void *)rsp + le32_to_cpu(rsp->buf_offset);
-}
-
-static u32 smc(u32 cmd_addr)
-{
-	int context_id;
-	register u32 r0 asm("r0") = 1;
-	register u32 r1 asm("r1") = (u32)&context_id;
-	register u32 r2 asm("r2") = cmd_addr;
-	do {
-		asm volatile(
-			__asmeq("%0", "r0")
-			__asmeq("%1", "r0")
-			__asmeq("%2", "r1")
-			__asmeq("%3", "r2")
-#ifdef REQUIRES_SEC
-			".arch_extension sec\n"
-#endif
-			"smc	#0	@ switch to secure world\n"
-			: "=r" (r0)
-			: "r" (r0), "r" (r1), "r" (r2)
-			: "r3", "r12");
-	} while (r0 == QCOM_SCM_INTERRUPTED);
-
-	return r0;
-}
-
-/**
- * qcom_scm_call() - Send an SCM command
- * @dev: struct device
- * @svc_id: service identifier
- * @cmd_id: command identifier
- * @cmd_buf: command buffer
- * @cmd_len: length of the command buffer
- * @resp_buf: response buffer
- * @resp_len: length of the response buffer
- *
- * Sends a command to the SCM and waits for the command to finish processing.
- *
- * A note on cache maintenance:
- * Note that any buffers that are expected to be accessed by the secure world
- * must be flushed before invoking qcom_scm_call and invalidated in the cache
- * immediately after qcom_scm_call returns. Cache maintenance on the command
- * and response buffers is taken care of by qcom_scm_call; however, callers are
- * responsible for any other cached buffers passed over to the secure world.
- */
-static int qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
-			 const void *cmd_buf, size_t cmd_len, void *resp_buf,
-			 size_t resp_len)
-{
-	int ret;
-	struct qcom_scm_command *cmd;
-	struct qcom_scm_response *rsp;
-	size_t alloc_len = sizeof(*cmd) + cmd_len + sizeof(*rsp) + resp_len;
-	dma_addr_t cmd_phys;
-
-	cmd = kzalloc(PAGE_ALIGN(alloc_len), GFP_KERNEL);
-	if (!cmd)
-		return -ENOMEM;
-
-	cmd->len = cpu_to_le32(alloc_len);
-	cmd->buf_offset = cpu_to_le32(sizeof(*cmd));
-	cmd->resp_hdr_offset = cpu_to_le32(sizeof(*cmd) + cmd_len);
-
-	cmd->id = cpu_to_le32((svc_id << 10) | cmd_id);
-	if (cmd_buf)
-		memcpy(qcom_scm_get_command_buffer(cmd), cmd_buf, cmd_len);
-
-	rsp = qcom_scm_command_to_response(cmd);
-
-	cmd_phys = dma_map_single(dev, cmd, alloc_len, DMA_TO_DEVICE);
-	if (dma_mapping_error(dev, cmd_phys)) {
-		kfree(cmd);
-		return -ENOMEM;
-	}
-
-	mutex_lock(&qcom_scm_lock);
-	ret = smc(cmd_phys);
-	if (ret < 0)
-		ret = qcom_scm_remap_error(ret);
-	mutex_unlock(&qcom_scm_lock);
-	if (ret)
-		goto out;
-
-	do {
-		dma_sync_single_for_cpu(dev, cmd_phys + sizeof(*cmd) + cmd_len,
-					sizeof(*rsp), DMA_FROM_DEVICE);
-	} while (!rsp->is_complete);
-
-	if (resp_buf) {
-		dma_sync_single_for_cpu(dev, cmd_phys + sizeof(*cmd) + cmd_len +
-					le32_to_cpu(rsp->buf_offset),
-					resp_len, DMA_FROM_DEVICE);
-		memcpy(resp_buf, qcom_scm_get_response_buffer(rsp),
-		       resp_len);
-	}
-out:
-	dma_unmap_single(dev, cmd_phys, alloc_len, DMA_TO_DEVICE);
-	kfree(cmd);
-	return ret;
-}
-
-#define SCM_CLASS_REGISTER	(0x2 << 8)
-#define SCM_MASK_IRQS		BIT(5)
-#define SCM_ATOMIC(svc, cmd, n) (((((svc) << 10)|((cmd) & 0x3ff)) << 12) | \
-				SCM_CLASS_REGISTER | \
-				SCM_MASK_IRQS | \
-				(n & 0xf))
-
-/**
- * qcom_scm_call_atomic1() - Send an atomic SCM command with one argument
- * @svc_id: service identifier
- * @cmd_id: command identifier
- * @arg1: first argument
- *
- * This shall only be used with commands that are guaranteed to be
- * uninterruptable, atomic and SMP safe.
- */
-static s32 qcom_scm_call_atomic1(u32 svc, u32 cmd, u32 arg1)
-{
-	int context_id;
-
-	register u32 r0 asm("r0") = SCM_ATOMIC(svc, cmd, 1);
-	register u32 r1 asm("r1") = (u32)&context_id;
-	register u32 r2 asm("r2") = arg1;
-
-	asm volatile(
-			__asmeq("%0", "r0")
-			__asmeq("%1", "r0")
-			__asmeq("%2", "r1")
-			__asmeq("%3", "r2")
-#ifdef REQUIRES_SEC
-			".arch_extension sec\n"
-#endif
-			"smc    #0      @ switch to secure world\n"
-			: "=r" (r0)
-			: "r" (r0), "r" (r1), "r" (r2)
-			: "r3", "r12");
-	return r0;
-}
-
-/**
- * qcom_scm_call_atomic2() - Send an atomic SCM command with two arguments
- * @svc_id:	service identifier
- * @cmd_id:	command identifier
- * @arg1:	first argument
- * @arg2:	second argument
- *
- * This shall only be used with commands that are guaranteed to be
- * uninterruptable, atomic and SMP safe.
- */
-static s32 qcom_scm_call_atomic2(u32 svc, u32 cmd, u32 arg1, u32 arg2)
-{
-	int context_id;
-
-	register u32 r0 asm("r0") = SCM_ATOMIC(svc, cmd, 2);
-	register u32 r1 asm("r1") = (u32)&context_id;
-	register u32 r2 asm("r2") = arg1;
-	register u32 r3 asm("r3") = arg2;
-
-	asm volatile(
-			__asmeq("%0", "r0")
-			__asmeq("%1", "r0")
-			__asmeq("%2", "r1")
-			__asmeq("%3", "r2")
-			__asmeq("%4", "r3")
-#ifdef REQUIRES_SEC
-			".arch_extension sec\n"
-#endif
-			"smc    #0      @ switch to secure world\n"
-			: "=r" (r0)
-			: "r" (r0), "r" (r1), "r" (r2), "r" (r3)
-			: "r12");
-	return r0;
-}
-
-u32 qcom_scm_get_version(void)
-{
-	int context_id;
-	static u32 version = -1;
-	register u32 r0 asm("r0");
-	register u32 r1 asm("r1");
-
-	if (version != -1)
-		return version;
-
-	mutex_lock(&qcom_scm_lock);
-
-	r0 = 0x1 << 8;
-	r1 = (u32)&context_id;
-	do {
-		asm volatile(
-			__asmeq("%0", "r0")
-			__asmeq("%1", "r1")
-			__asmeq("%2", "r0")
-			__asmeq("%3", "r1")
-#ifdef REQUIRES_SEC
-			".arch_extension sec\n"
-#endif
-			"smc	#0	@ switch to secure world\n"
-			: "=r" (r0), "=r" (r1)
-			: "r" (r0), "r" (r1)
-			: "r2", "r3", "r12");
-	} while (r0 == QCOM_SCM_INTERRUPTED);
-
-	version = r1;
-	mutex_unlock(&qcom_scm_lock);
-
-	return version;
-}
-EXPORT_SYMBOL(qcom_scm_get_version);
-
-/**
- * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus
- * @entry: Entry point function for the cpus
- * @cpus: The cpumask of cpus that will use the entry point
- *
- * Set the cold boot address of the cpus. Any cpu outside the supported
- * range would be removed from the cpu present mask.
- */
-int __qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
-{
-	int flags = 0;
-	int cpu;
-	int scm_cb_flags[] = {
-		QCOM_SCM_FLAG_COLDBOOT_CPU0,
-		QCOM_SCM_FLAG_COLDBOOT_CPU1,
-		QCOM_SCM_FLAG_COLDBOOT_CPU2,
-		QCOM_SCM_FLAG_COLDBOOT_CPU3,
-	};
-
-	if (!cpus || (cpus && cpumask_empty(cpus)))
-		return -EINVAL;
-
-	for_each_cpu(cpu, cpus) {
-		if (cpu < ARRAY_SIZE(scm_cb_flags))
-			flags |= scm_cb_flags[cpu];
-		else
-			set_cpu_present(cpu, false);
-	}
-
-	return qcom_scm_call_atomic2(QCOM_SCM_SVC_BOOT, QCOM_SCM_BOOT_ADDR,
-				    flags, virt_to_phys(entry));
-}
-
-/**
- * qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus
- * @entry: Entry point function for the cpus
- * @cpus: The cpumask of cpus that will use the entry point
- *
- * Set the Linux entry point for the SCM to transfer control to when coming
- * out of a power down. CPU power down may be executed on cpuidle or hotplug.
- */
-int __qcom_scm_set_warm_boot_addr(struct device *dev, void *entry,
-				  const cpumask_t *cpus)
-{
-	int ret;
-	int flags = 0;
-	int cpu;
-	struct {
-		__le32 flags;
-		__le32 addr;
-	} cmd;
-
-	/*
-	 * Reassign only if we are switching from hotplug entry point
-	 * to cpuidle entry point or vice versa.
-	 */
-	for_each_cpu(cpu, cpus) {
-		if (entry == qcom_scm_wb[cpu].entry)
-			continue;
-		flags |= qcom_scm_wb[cpu].flag;
-	}
-
-	/* No change in entry function */
-	if (!flags)
-		return 0;
-
-	cmd.addr = cpu_to_le32(virt_to_phys(entry));
-	cmd.flags = cpu_to_le32(flags);
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_BOOT, QCOM_SCM_BOOT_ADDR,
-			    &cmd, sizeof(cmd), NULL, 0);
-	if (!ret) {
-		for_each_cpu(cpu, cpus)
-			qcom_scm_wb[cpu].entry = entry;
-	}
-
-	return ret;
-}
-
-/**
- * qcom_scm_cpu_power_down() - Power down the cpu
- * @flags - Flags to flush cache
- *
- * This is an end point to power down cpu. If there was a pending interrupt,
- * the control would return from this function, otherwise, the cpu jumps to the
- * warm boot entry point set for this cpu upon reset.
- */
-void __qcom_scm_cpu_power_down(u32 flags)
-{
-	qcom_scm_call_atomic1(QCOM_SCM_SVC_BOOT, QCOM_SCM_CMD_TERMINATE_PC,
-			flags & QCOM_SCM_FLUSH_FLAG_MASK);
-}
-
-int __qcom_scm_is_call_available(struct device *dev, u32 svc_id, u32 cmd_id)
-{
-	int ret;
-	__le32 svc_cmd = cpu_to_le32((svc_id << 10) | cmd_id);
-	__le32 ret_val = 0;
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_INFO, QCOM_IS_CALL_AVAIL_CMD,
-			    &svc_cmd, sizeof(svc_cmd), &ret_val,
-			    sizeof(ret_val));
-	if (ret)
-		return ret;
-
-	return le32_to_cpu(ret_val);
-}
-
-int __qcom_scm_hdcp_req(struct device *dev, struct qcom_scm_hdcp_req *req,
-			u32 req_cnt, u32 *resp)
-{
-	if (req_cnt > QCOM_SCM_HDCP_MAX_REQ_CNT)
-		return -ERANGE;
-
-	return qcom_scm_call(dev, QCOM_SCM_SVC_HDCP, QCOM_SCM_CMD_HDCP,
-		req, req_cnt * sizeof(*req), resp, sizeof(*resp));
-}
-
-int __qcom_scm_ocmem_lock(struct device *dev, u32 id, u32 offset, u32 size,
-			  u32 mode)
-{
-	struct ocmem_tz_lock {
-		__le32 id;
-		__le32 offset;
-		__le32 size;
-		__le32 mode;
-	} request;
-
-	request.id = cpu_to_le32(id);
-	request.offset = cpu_to_le32(offset);
-	request.size = cpu_to_le32(size);
-	request.mode = cpu_to_le32(mode);
-
-	return qcom_scm_call(dev, QCOM_SCM_OCMEM_SVC, QCOM_SCM_OCMEM_LOCK_CMD,
-			     &request, sizeof(request), NULL, 0);
-}
-
-int __qcom_scm_ocmem_unlock(struct device *dev, u32 id, u32 offset, u32 size)
-{
-	struct ocmem_tz_unlock {
-		__le32 id;
-		__le32 offset;
-		__le32 size;
-	} request;
-
-	request.id = cpu_to_le32(id);
-	request.offset = cpu_to_le32(offset);
-	request.size = cpu_to_le32(size);
-
-	return qcom_scm_call(dev, QCOM_SCM_OCMEM_SVC, QCOM_SCM_OCMEM_UNLOCK_CMD,
-			     &request, sizeof(request), NULL, 0);
-}
-
-void __qcom_scm_init(void)
-{
-}
-
-bool __qcom_scm_pas_supported(struct device *dev, u32 peripheral)
-{
-	__le32 out;
-	__le32 in;
-	int ret;
-
-	in = cpu_to_le32(peripheral);
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-			    QCOM_SCM_PAS_IS_SUPPORTED_CMD,
-			    &in, sizeof(in),
-			    &out, sizeof(out));
-
-	return ret ? false : !!out;
-}
-
-int __qcom_scm_pas_init_image(struct device *dev, u32 peripheral,
-			      dma_addr_t metadata_phys)
-{
-	__le32 scm_ret;
-	int ret;
-	struct {
-		__le32 proc;
-		__le32 image_addr;
-	} request;
-
-	request.proc = cpu_to_le32(peripheral);
-	request.image_addr = cpu_to_le32(metadata_phys);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-			    QCOM_SCM_PAS_INIT_IMAGE_CMD,
-			    &request, sizeof(request),
-			    &scm_ret, sizeof(scm_ret));
-
-	return ret ? : le32_to_cpu(scm_ret);
-}
-
-int __qcom_scm_pas_mem_setup(struct device *dev, u32 peripheral,
-			     phys_addr_t addr, phys_addr_t size)
-{
-	__le32 scm_ret;
-	int ret;
-	struct {
-		__le32 proc;
-		__le32 addr;
-		__le32 len;
-	} request;
-
-	request.proc = cpu_to_le32(peripheral);
-	request.addr = cpu_to_le32(addr);
-	request.len = cpu_to_le32(size);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-			    QCOM_SCM_PAS_MEM_SETUP_CMD,
-			    &request, sizeof(request),
-			    &scm_ret, sizeof(scm_ret));
-
-	return ret ? : le32_to_cpu(scm_ret);
-}
-
-int __qcom_scm_pas_auth_and_reset(struct device *dev, u32 peripheral)
-{
-	__le32 out;
-	__le32 in;
-	int ret;
-
-	in = cpu_to_le32(peripheral);
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-			    QCOM_SCM_PAS_AUTH_AND_RESET_CMD,
-			    &in, sizeof(in),
-			    &out, sizeof(out));
-
-	return ret ? : le32_to_cpu(out);
-}
-
-int __qcom_scm_pas_shutdown(struct device *dev, u32 peripheral)
-{
-	__le32 out;
-	__le32 in;
-	int ret;
-
-	in = cpu_to_le32(peripheral);
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-			    QCOM_SCM_PAS_SHUTDOWN_CMD,
-			    &in, sizeof(in),
-			    &out, sizeof(out));
-
-	return ret ? : le32_to_cpu(out);
-}
-
-int __qcom_scm_pas_mss_reset(struct device *dev, bool reset)
-{
-	__le32 out;
-	__le32 in = cpu_to_le32(reset);
-	int ret;
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL, QCOM_SCM_PAS_MSS_RESET,
-			&in, sizeof(in),
-			&out, sizeof(out));
-
-	return ret ? : le32_to_cpu(out);
-}
-
-int __qcom_scm_set_dload_mode(struct device *dev, bool enable)
-{
-	return qcom_scm_call_atomic2(QCOM_SCM_SVC_BOOT, QCOM_SCM_SET_DLOAD_MODE,
-				     enable ? QCOM_SCM_SET_DLOAD_MODE : 0, 0);
-}
-
-int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id)
-{
-	struct {
-		__le32 state;
-		__le32 id;
-	} req;
-	__le32 scm_ret = 0;
-	int ret;
-
-	req.state = cpu_to_le32(state);
-	req.id = cpu_to_le32(id);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_BOOT, QCOM_SCM_SET_REMOTE_STATE,
-			    &req, sizeof(req), &scm_ret, sizeof(scm_ret));
-
-	return ret ? : le32_to_cpu(scm_ret);
-}
-
-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)
-{
-	return -ENODEV;
-}
-
-int __qcom_scm_restore_sec_cfg(struct device *dev, u32 device_id,
-			       u32 spare)
-{
-	struct msm_scm_sec_cfg {
-		__le32 id;
-		__le32 ctx_bank_num;
-	} cfg;
-	int ret, scm_ret = 0;
-
-	cfg.id = cpu_to_le32(device_id);
-	cfg.ctx_bank_num = cpu_to_le32(spare);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_MP, QCOM_SCM_RESTORE_SEC_CFG,
-			    &cfg, sizeof(cfg), &scm_ret, sizeof(scm_ret));
-
-	if (ret || scm_ret)
-		return ret ? ret : -EINVAL;
-
-	return 0;
-}
-
-int __qcom_scm_iommu_secure_ptbl_size(struct device *dev, u32 spare,
-				      size_t *size)
-{
-	return -ENODEV;
-}
-
-int __qcom_scm_iommu_secure_ptbl_init(struct device *dev, u64 addr, u32 size,
-				      u32 spare)
-{
-	return -ENODEV;
-}
-
-int __qcom_scm_io_readl(struct device *dev, phys_addr_t addr,
-			unsigned int *val)
-{
-	int ret;
-
-	ret = qcom_scm_call_atomic1(QCOM_SCM_SVC_IO, QCOM_SCM_IO_READ, addr);
-	if (ret >= 0)
-		*val = ret;
-
-	return ret < 0 ? ret : 0;
-}
-
-int __qcom_scm_io_writel(struct device *dev, phys_addr_t addr, unsigned int val)
-{
-	return qcom_scm_call_atomic2(QCOM_SCM_SVC_IO, QCOM_SCM_IO_WRITE,
-				     addr, val);
-}
-
-int __qcom_scm_qsmmu500_wait_safe_toggle(struct device *dev, bool enable)
-{
-	return -ENODEV;
-}
diff --git a/drivers/firmware/qcom_scm-64.c b/drivers/firmware/qcom_scm-64.c
deleted file mode 100644
index 3c5850350974..000000000000
--- a/drivers/firmware/qcom_scm-64.c
+++ /dev/null
@@ -1,579 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
- */
-
-#include <linux/io.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/qcom_scm.h>
-#include <linux/arm-smccc.h>
-#include <linux/dma-mapping.h>
-
-#include "qcom_scm.h"
-
-#define QCOM_SCM_FNID(s, c) ((((s) & 0xFF) << 8) | ((c) & 0xFF))
-
-#define MAX_QCOM_SCM_ARGS 10
-#define MAX_QCOM_SCM_RETS 3
-
-enum qcom_scm_arg_types {
-	QCOM_SCM_VAL,
-	QCOM_SCM_RO,
-	QCOM_SCM_RW,
-	QCOM_SCM_BUFVAL,
-};
-
-#define QCOM_SCM_ARGS_IMPL(num, a, b, c, d, e, f, g, h, i, j, ...) (\
-			   (((a) & 0x3) << 4) | \
-			   (((b) & 0x3) << 6) | \
-			   (((c) & 0x3) << 8) | \
-			   (((d) & 0x3) << 10) | \
-			   (((e) & 0x3) << 12) | \
-			   (((f) & 0x3) << 14) | \
-			   (((g) & 0x3) << 16) | \
-			   (((h) & 0x3) << 18) | \
-			   (((i) & 0x3) << 20) | \
-			   (((j) & 0x3) << 22) | \
-			   ((num) & 0xf))
-
-#define QCOM_SCM_ARGS(...) QCOM_SCM_ARGS_IMPL(__VA_ARGS__, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
-
-/**
- * struct qcom_scm_desc
- * @arginfo:	Metadata describing the arguments in args[]
- * @args:	The array of arguments for the secure syscall
- * @res:	The values returned by the secure syscall
- */
-struct qcom_scm_desc {
-	u32 arginfo;
-	u64 args[MAX_QCOM_SCM_ARGS];
-};
-
-static u64 qcom_smccc_convention = -1;
-static DEFINE_MUTEX(qcom_scm_lock);
-
-#define QCOM_SCM_EBUSY_WAIT_MS 30
-#define QCOM_SCM_EBUSY_MAX_RETRY 20
-
-#define N_EXT_QCOM_SCM_ARGS 7
-#define FIRST_EXT_ARG_IDX 3
-#define N_REGISTER_ARGS (MAX_QCOM_SCM_ARGS - N_EXT_QCOM_SCM_ARGS + 1)
-
-static void __qcom_scm_call_do(const struct qcom_scm_desc *desc,
-			       struct arm_smccc_res *res, u32 fn_id,
-			       u64 x5, u32 type)
-{
-	u64 cmd;
-	struct arm_smccc_quirk quirk = { .id = ARM_SMCCC_QUIRK_QCOM_A6 };
-
-	cmd = ARM_SMCCC_CALL_VAL(type, qcom_smccc_convention,
-				 ARM_SMCCC_OWNER_SIP, fn_id);
-
-	quirk.state.a6 = 0;
-
-	do {
-		arm_smccc_smc_quirk(cmd, desc->arginfo, desc->args[0],
-				    desc->args[1], desc->args[2], x5,
-				    quirk.state.a6, 0, res, &quirk);
-
-		if (res->a0 == QCOM_SCM_INTERRUPTED)
-			cmd = res->a0;
-
-	} while (res->a0 == QCOM_SCM_INTERRUPTED);
-}
-
-static void qcom_scm_call_do(const struct qcom_scm_desc *desc,
-			     struct arm_smccc_res *res, u32 fn_id,
-			     u64 x5, bool atomic)
-{
-	int retry_count = 0;
-
-	if (atomic) {
-		__qcom_scm_call_do(desc, res, fn_id, x5, ARM_SMCCC_FAST_CALL);
-		return;
-	}
-
-	do {
-		mutex_lock(&qcom_scm_lock);
-
-		__qcom_scm_call_do(desc, res, fn_id, x5,
-				   ARM_SMCCC_STD_CALL);
-
-		mutex_unlock(&qcom_scm_lock);
-
-		if (res->a0 == QCOM_SCM_V2_EBUSY) {
-			if (retry_count++ > QCOM_SCM_EBUSY_MAX_RETRY)
-				break;
-			msleep(QCOM_SCM_EBUSY_WAIT_MS);
-		}
-	}  while (res->a0 == QCOM_SCM_V2_EBUSY);
-}
-
-static int ___qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
-			    const struct qcom_scm_desc *desc,
-			    struct arm_smccc_res *res, bool atomic)
-{
-	int arglen = desc->arginfo & 0xf;
-	int i;
-	u32 fn_id = QCOM_SCM_FNID(svc_id, cmd_id);
-	u64 x5 = desc->args[FIRST_EXT_ARG_IDX];
-	dma_addr_t args_phys = 0;
-	void *args_virt = NULL;
-	size_t alloc_len;
-	gfp_t flag = atomic ? GFP_ATOMIC : GFP_KERNEL;
-
-	if (unlikely(arglen > N_REGISTER_ARGS)) {
-		alloc_len = N_EXT_QCOM_SCM_ARGS * sizeof(u64);
-		args_virt = kzalloc(PAGE_ALIGN(alloc_len), flag);
-
-		if (!args_virt)
-			return -ENOMEM;
-
-		if (qcom_smccc_convention == ARM_SMCCC_SMC_32) {
-			__le32 *args = args_virt;
-
-			for (i = 0; i < N_EXT_QCOM_SCM_ARGS; i++)
-				args[i] = cpu_to_le32(desc->args[i +
-						      FIRST_EXT_ARG_IDX]);
-		} else {
-			__le64 *args = args_virt;
-
-			for (i = 0; i < N_EXT_QCOM_SCM_ARGS; i++)
-				args[i] = cpu_to_le64(desc->args[i +
-						      FIRST_EXT_ARG_IDX]);
-		}
-
-		args_phys = dma_map_single(dev, args_virt, alloc_len,
-					   DMA_TO_DEVICE);
-
-		if (dma_mapping_error(dev, args_phys)) {
-			kfree(args_virt);
-			return -ENOMEM;
-		}
-
-		x5 = args_phys;
-	}
-
-	qcom_scm_call_do(desc, res, fn_id, x5, atomic);
-
-	if (args_virt) {
-		dma_unmap_single(dev, args_phys, alloc_len, DMA_TO_DEVICE);
-		kfree(args_virt);
-	}
-
-	if ((long)res->a0 < 0)
-		return qcom_scm_remap_error(res->a0);
-
-	return 0;
-}
-
-/**
- * qcom_scm_call() - Invoke a syscall in the secure world
- * @dev:	device
- * @svc_id:	service identifier
- * @cmd_id:	command identifier
- * @desc:	Descriptor structure containing arguments and return values
- *
- * Sends a command to the SCM and waits for the command to finish processing.
- * This should *only* be called in pre-emptible context.
- */
-static int qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
-			 const struct qcom_scm_desc *desc,
-			 struct arm_smccc_res *res)
-{
-	might_sleep();
-	return ___qcom_scm_call(dev, svc_id, cmd_id, desc, res, false);
-}
-
-/**
- * qcom_scm_call_atomic() - atomic variation of qcom_scm_call()
- * @dev:	device
- * @svc_id:	service identifier
- * @cmd_id:	command identifier
- * @desc:	Descriptor structure containing arguments and return values
- * @res:	Structure containing results from SMC/HVC call
- *
- * Sends a command to the SCM and waits for the command to finish processing.
- * This can be called in atomic context.
- */
-static int qcom_scm_call_atomic(struct device *dev, u32 svc_id, u32 cmd_id,
-				const struct qcom_scm_desc *desc,
-				struct arm_smccc_res *res)
-{
-	return ___qcom_scm_call(dev, svc_id, cmd_id, desc, res, true);
-}
-
-/**
- * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus
- * @entry: Entry point function for the cpus
- * @cpus: The cpumask of cpus that will use the entry point
- *
- * Set the cold boot address of the cpus. Any cpu outside the supported
- * range would be removed from the cpu present mask.
- */
-int __qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
-{
-	return -ENOTSUPP;
-}
-
-/**
- * qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus
- * @dev: Device pointer
- * @entry: Entry point function for the cpus
- * @cpus: The cpumask of cpus that will use the entry point
- *
- * Set the Linux entry point for the SCM to transfer control to when coming
- * out of a power down. CPU power down may be executed on cpuidle or hotplug.
- */
-int __qcom_scm_set_warm_boot_addr(struct device *dev, void *entry,
-				  const cpumask_t *cpus)
-{
-	return -ENOTSUPP;
-}
-
-/**
- * qcom_scm_cpu_power_down() - Power down the cpu
- * @flags - Flags to flush cache
- *
- * This is an end point to power down cpu. If there was a pending interrupt,
- * the control would return from this function, otherwise, the cpu jumps to the
- * warm boot entry point set for this cpu upon reset.
- */
-void __qcom_scm_cpu_power_down(u32 flags)
-{
-}
-
-int __qcom_scm_is_call_available(struct device *dev, u32 svc_id, u32 cmd_id)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.arginfo = QCOM_SCM_ARGS(1);
-	desc.args[0] = QCOM_SCM_FNID(svc_id, cmd_id) |
-			(ARM_SMCCC_OWNER_SIP << ARM_SMCCC_OWNER_SHIFT);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_INFO, QCOM_IS_CALL_AVAIL_CMD,
-			    &desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_hdcp_req(struct device *dev, struct qcom_scm_hdcp_req *req,
-			u32 req_cnt, u32 *resp)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	if (req_cnt > QCOM_SCM_HDCP_MAX_REQ_CNT)
-		return -ERANGE;
-
-	desc.args[0] = req[0].addr;
-	desc.args[1] = req[0].val;
-	desc.args[2] = req[1].addr;
-	desc.args[3] = req[1].val;
-	desc.args[4] = req[2].addr;
-	desc.args[5] = req[2].val;
-	desc.args[6] = req[3].addr;
-	desc.args[7] = req[3].val;
-	desc.args[8] = req[4].addr;
-	desc.args[9] = req[4].val;
-	desc.arginfo = QCOM_SCM_ARGS(10);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_HDCP, QCOM_SCM_CMD_HDCP, &desc,
-			    &res);
-	*resp = res.a1;
-
-	return ret;
-}
-
-int __qcom_scm_ocmem_lock(struct device *dev, uint32_t id, uint32_t offset,
-			  uint32_t size, uint32_t mode)
-{
-	return -ENOTSUPP;
-}
-
-int __qcom_scm_ocmem_unlock(struct device *dev, uint32_t id, uint32_t offset,
-			    uint32_t size)
-{
-	return -ENOTSUPP;
-}
-
-void __qcom_scm_init(void)
-{
-	u64 cmd;
-	struct arm_smccc_res res;
-	u32 function = QCOM_SCM_FNID(QCOM_SCM_SVC_INFO, QCOM_IS_CALL_AVAIL_CMD);
-
-	/* First try a SMC64 call */
-	cmd = ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, ARM_SMCCC_SMC_64,
-				 ARM_SMCCC_OWNER_SIP, function);
-
-	arm_smccc_smc(cmd, QCOM_SCM_ARGS(1), cmd & (~BIT(ARM_SMCCC_TYPE_SHIFT)),
-		      0, 0, 0, 0, 0, &res);
-
-	if (!res.a0 && res.a1)
-		qcom_smccc_convention = ARM_SMCCC_SMC_64;
-	else
-		qcom_smccc_convention = ARM_SMCCC_SMC_32;
-}
-
-bool __qcom_scm_pas_supported(struct device *dev, u32 peripheral)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = peripheral;
-	desc.arginfo = QCOM_SCM_ARGS(1);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-				QCOM_SCM_PAS_IS_SUPPORTED_CMD,
-				&desc, &res);
-
-	return ret ? false : !!res.a1;
-}
-
-int __qcom_scm_pas_init_image(struct device *dev, u32 peripheral,
-			      dma_addr_t metadata_phys)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = peripheral;
-	desc.args[1] = metadata_phys;
-	desc.arginfo = QCOM_SCM_ARGS(2, QCOM_SCM_VAL, QCOM_SCM_RW);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL, QCOM_SCM_PAS_INIT_IMAGE_CMD,
-				&desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_pas_mem_setup(struct device *dev, u32 peripheral,
-			      phys_addr_t addr, phys_addr_t size)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = peripheral;
-	desc.args[1] = addr;
-	desc.args[2] = size;
-	desc.arginfo = QCOM_SCM_ARGS(3);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL, QCOM_SCM_PAS_MEM_SETUP_CMD,
-				&desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_pas_auth_and_reset(struct device *dev, u32 peripheral)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = peripheral;
-	desc.arginfo = QCOM_SCM_ARGS(1);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-				QCOM_SCM_PAS_AUTH_AND_RESET_CMD,
-				&desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_pas_shutdown(struct device *dev, u32 peripheral)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = peripheral;
-	desc.arginfo = QCOM_SCM_ARGS(1);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL, QCOM_SCM_PAS_SHUTDOWN_CMD,
-			&desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_pas_mss_reset(struct device *dev, bool reset)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-	int ret;
-
-	desc.args[0] = reset;
-	desc.args[1] = 0;
-	desc.arginfo = QCOM_SCM_ARGS(2);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL, QCOM_SCM_PAS_MSS_RESET, &desc,
-			    &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-	int ret;
-
-	desc.args[0] = state;
-	desc.args[1] = id;
-	desc.arginfo = QCOM_SCM_ARGS(2);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_BOOT, QCOM_SCM_SET_REMOTE_STATE,
-			    &desc, &res);
-
-	return ret ? : res.a1;
-}
-
-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)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = mem_region;
-	desc.args[1] = mem_sz;
-	desc.args[2] = src;
-	desc.args[3] = src_sz;
-	desc.args[4] = dest;
-	desc.args[5] = dest_sz;
-	desc.args[6] = 0;
-
-	desc.arginfo = QCOM_SCM_ARGS(7, QCOM_SCM_RO, QCOM_SCM_VAL,
-				     QCOM_SCM_RO, QCOM_SCM_VAL, QCOM_SCM_RO,
-				     QCOM_SCM_VAL, QCOM_SCM_VAL);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_MP,
-			    QCOM_MEM_PROT_ASSIGN_ID,
-			    &desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_restore_sec_cfg(struct device *dev, u32 device_id, u32 spare)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-	int ret;
-
-	desc.args[0] = device_id;
-	desc.args[1] = spare;
-	desc.arginfo = QCOM_SCM_ARGS(2);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_MP, QCOM_SCM_RESTORE_SEC_CFG,
-			    &desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_iommu_secure_ptbl_size(struct device *dev, u32 spare,
-				      size_t *size)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-	int ret;
-
-	desc.args[0] = spare;
-	desc.arginfo = QCOM_SCM_ARGS(1);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_MP,
-			    QCOM_SCM_IOMMU_SECURE_PTBL_SIZE, &desc, &res);
-
-	if (size)
-		*size = res.a1;
-
-	return ret ? : res.a2;
-}
-
-int __qcom_scm_iommu_secure_ptbl_init(struct device *dev, u64 addr, u32 size,
-				      u32 spare)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-	int ret;
-
-	desc.args[0] = addr;
-	desc.args[1] = size;
-	desc.args[2] = spare;
-	desc.arginfo = QCOM_SCM_ARGS(3, QCOM_SCM_RW, QCOM_SCM_VAL,
-				     QCOM_SCM_VAL);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_MP,
-			    QCOM_SCM_IOMMU_SECURE_PTBL_INIT, &desc, &res);
-
-	/* the pg table has been initialized already, ignore the error */
-	if (ret == -EPERM)
-		ret = 0;
-
-	return ret;
-}
-
-int __qcom_scm_set_dload_mode(struct device *dev, bool enable)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = QCOM_SCM_SET_DLOAD_MODE;
-	desc.args[1] = enable ? QCOM_SCM_SET_DLOAD_MODE : 0;
-	desc.arginfo = QCOM_SCM_ARGS(2);
-
-	return qcom_scm_call(dev, QCOM_SCM_SVC_BOOT, QCOM_SCM_SET_DLOAD_MODE,
-			     &desc, &res);
-}
-
-int __qcom_scm_io_readl(struct device *dev, phys_addr_t addr,
-			unsigned int *val)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-	int ret;
-
-	desc.args[0] = addr;
-	desc.arginfo = QCOM_SCM_ARGS(1);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_IO, QCOM_SCM_IO_READ,
-			    &desc, &res);
-	if (ret >= 0)
-		*val = res.a1;
-
-	return ret < 0 ? ret : 0;
-}
-
-int __qcom_scm_io_writel(struct device *dev, phys_addr_t addr, unsigned int val)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = addr;
-	desc.args[1] = val;
-	desc.arginfo = QCOM_SCM_ARGS(2);
-
-	return qcom_scm_call(dev, QCOM_SCM_SVC_IO, QCOM_SCM_IO_WRITE,
-			     &desc, &res);
-}
-
-int __qcom_scm_qsmmu500_wait_safe_toggle(struct device *dev, bool en)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = QCOM_SCM_CONFIG_ERRATA1_CLIENT_ALL;
-	desc.args[1] = en;
-	desc.arginfo = QCOM_SCM_ARGS(2);
-
-	return qcom_scm_call_atomic(dev, QCOM_SCM_SVC_SMMU_PROGRAM,
-				    QCOM_SCM_CONFIG_ERRATA1, &desc, &res);
-}
diff --git a/drivers/firmware/qcom_scm-legacy.c b/drivers/firmware/qcom_scm-legacy.c
new file mode 100644
index 000000000000..8532e7c78ef7
--- /dev/null
+++ b/drivers/firmware/qcom_scm-legacy.c
@@ -0,0 +1,242 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2010,2015,2019 The Linux Foundation. All rights reserved.
+ * Copyright (C) 2015 Linaro Ltd.
+ */
+
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/qcom_scm.h>
+#include <linux/arm-smccc.h>
+#include <linux/dma-mapping.h>
+
+#include "qcom_scm.h"
+
+static DEFINE_MUTEX(qcom_scm_lock);
+
+
+/**
+ * struct arm_smccc_args
+ * @args:	The array of values used in registers in smc instruction
+ */
+struct arm_smccc_args {
+	unsigned long args[8];
+};
+
+
+/**
+ * struct scm_legacy_command - one SCM command buffer
+ * @len: total available memory for command and response
+ * @buf_offset: start of command buffer
+ * @resp_hdr_offset: start of response buffer
+ * @id: command to be executed
+ * @buf: buffer returned from scm_legacy_get_command_buffer()
+ *
+ * An SCM command is laid out in memory as follows:
+ *
+ *	------------------- <--- struct scm_legacy_command
+ *	| command header  |
+ *	------------------- <--- scm_legacy_get_command_buffer()
+ *	| command buffer  |
+ *	------------------- <--- struct scm_legacy_response and
+ *	| response header |      scm_legacy_command_to_response()
+ *	------------------- <--- scm_legacy_get_response_buffer()
+ *	| response buffer |
+ *	-------------------
+ *
+ * There can be arbitrary padding between the headers and buffers so
+ * you should always use the appropriate scm_legacy_get_*_buffer() routines
+ * to access the buffers in a safe manner.
+ */
+struct scm_legacy_command {
+	__le32 len;
+	__le32 buf_offset;
+	__le32 resp_hdr_offset;
+	__le32 id;
+	__le32 buf[0];
+};
+
+/**
+ * struct scm_legacy_response - one SCM response buffer
+ * @len: total available memory for response
+ * @buf_offset: start of response data relative to start of scm_legacy_response
+ * @is_complete: indicates if the command has finished processing
+ */
+struct scm_legacy_response {
+	__le32 len;
+	__le32 buf_offset;
+	__le32 is_complete;
+};
+
+/**
+ * scm_legacy_command_to_response() - Get a pointer to a scm_legacy_response
+ * @cmd: command
+ *
+ * Returns a pointer to a response for a command.
+ */
+static inline struct scm_legacy_response *scm_legacy_command_to_response(
+		const struct scm_legacy_command *cmd)
+{
+	return (void *)cmd + le32_to_cpu(cmd->resp_hdr_offset);
+}
+
+/**
+ * scm_legacy_get_command_buffer() - Get a pointer to a command buffer
+ * @cmd: command
+ *
+ * Returns a pointer to the command buffer of a command.
+ */
+static inline void *scm_legacy_get_command_buffer(
+		const struct scm_legacy_command *cmd)
+{
+	return (void *)cmd->buf;
+}
+
+/**
+ * scm_legacy_get_response_buffer() - Get a pointer to a response buffer
+ * @rsp: response
+ *
+ * Returns a pointer to a response buffer of a response.
+ */
+static inline void *scm_legacy_get_response_buffer(
+		const struct scm_legacy_response *rsp)
+{
+	return (void *)rsp + le32_to_cpu(rsp->buf_offset);
+}
+
+static void __scm_legacy_do(const struct arm_smccc_args *smc,
+			    struct arm_smccc_res *res)
+{
+	do {
+		arm_smccc_smc(smc->args[0], smc->args[1], smc->args[2],
+			      smc->args[3], smc->args[4], smc->args[5],
+			      smc->args[6], smc->args[7], res);
+	} while (res->a0 == QCOM_SCM_INTERRUPTED);
+}
+
+/**
+ * qcom_scm_call() - Sends a command to the SCM and waits for the command to
+ * finish processing.
+ *
+ * A note on cache maintenance:
+ * Note that any buffers that are expected to be accessed by the secure world
+ * must be flushed before invoking qcom_scm_call and invalidated in the cache
+ * immediately after qcom_scm_call returns. Cache maintenance on the command
+ * and response buffers is taken care of by qcom_scm_call; however, callers are
+ * responsible for any other cached buffers passed over to the secure world.
+ */
+int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
+		    struct qcom_scm_res *res)
+{
+	u8 arglen = desc->arginfo & 0xf;
+	int ret = 0, context_id;
+	unsigned int i;
+	struct scm_legacy_command *cmd;
+	struct scm_legacy_response *rsp;
+	struct arm_smccc_args smc = {0};
+	struct arm_smccc_res smc_res;
+	const size_t cmd_len = arglen * sizeof(__le32);
+	const size_t resp_len = MAX_QCOM_SCM_RETS * sizeof(__le32);
+	size_t alloc_len = sizeof(*cmd) + cmd_len + sizeof(*rsp) + resp_len;
+	dma_addr_t cmd_phys;
+	__le32 *arg_buf;
+	const __le32 *res_buf;
+
+	cmd = kzalloc(PAGE_ALIGN(alloc_len), GFP_KERNEL);
+	if (!cmd)
+		return -ENOMEM;
+
+	cmd->len = cpu_to_le32(alloc_len);
+	cmd->buf_offset = cpu_to_le32(sizeof(*cmd));
+	cmd->resp_hdr_offset = cpu_to_le32(sizeof(*cmd) + cmd_len);
+	cmd->id = cpu_to_le32(SCM_LEGACY_FNID(desc->svc, desc->cmd));
+
+	arg_buf = scm_legacy_get_command_buffer(cmd);
+	for (i = 0; i < arglen; i++)
+		arg_buf[i] = cpu_to_le32(desc->args[i]);
+
+	rsp = scm_legacy_command_to_response(cmd);
+
+	cmd_phys = dma_map_single(dev, cmd, alloc_len, DMA_TO_DEVICE);
+	if (dma_mapping_error(dev, cmd_phys)) {
+		kfree(cmd);
+		return -ENOMEM;
+	}
+
+	smc.args[0] = 1;
+	smc.args[1] = (unsigned long)&context_id;
+	smc.args[2] = cmd_phys;
+
+	mutex_lock(&qcom_scm_lock);
+	__scm_legacy_do(&smc, &smc_res);
+	if (smc_res.a0)
+		ret = qcom_scm_remap_error(smc_res.a0);
+	mutex_unlock(&qcom_scm_lock);
+	if (ret)
+		goto out;
+
+	do {
+		dma_sync_single_for_cpu(dev, cmd_phys + sizeof(*cmd) + cmd_len,
+					sizeof(*rsp), DMA_FROM_DEVICE);
+	} while (!rsp->is_complete);
+
+	dma_sync_single_for_cpu(dev, cmd_phys + sizeof(*cmd) + cmd_len +
+				le32_to_cpu(rsp->buf_offset),
+				resp_len, DMA_FROM_DEVICE);
+
+	if (res) {
+		res_buf = scm_legacy_get_response_buffer(rsp);
+		for (i = 0; i < MAX_QCOM_SCM_RETS; i++)
+			res->result[i] = le32_to_cpu(res_buf[i]);
+	}
+out:
+	dma_unmap_single(dev, cmd_phys, alloc_len, DMA_TO_DEVICE);
+	kfree(cmd);
+	return ret;
+}
+
+#define SCM_LEGACY_ATOMIC_N_REG_ARGS	5
+#define SCM_LEGACY_ATOMIC_FIRST_REG_IDX	2
+#define SCM_LEGACY_CLASS_REGISTER		(0x2 << 8)
+#define SCM_LEGACY_MASK_IRQS		BIT(5)
+#define SCM_LEGACY_ATOMIC_ID(svc, cmd, n) \
+				((SCM_LEGACY_FNID(svc, cmd) << 12) | \
+				SCM_LEGACY_CLASS_REGISTER | \
+				SCM_LEGACY_MASK_IRQS | \
+				(n & 0xf))
+
+/**
+ * qcom_scm_call_atomic() - Send an atomic SCM command with up to 5 arguments
+ * and 3 return values
+ * @desc: SCM call descriptor containing arguments
+ * @res:  SCM call return values
+ *
+ * This shall only be used with commands that are guaranteed to be
+ * uninterruptable, atomic and SMP safe.
+ */
+int scm_legacy_call_atomic(struct device *unused,
+			   const struct qcom_scm_desc *desc,
+			   struct qcom_scm_res *res)
+{
+	int context_id;
+	struct arm_smccc_res smc_res;
+	size_t arglen = desc->arginfo & 0xf;
+
+	BUG_ON(arglen > SCM_LEGACY_ATOMIC_N_REG_ARGS);
+
+	arm_smccc_smc(SCM_LEGACY_ATOMIC_ID(desc->svc, desc->cmd, arglen),
+		      (unsigned long)&context_id,
+		      desc->args[0], desc->args[1], desc->args[2],
+		      desc->args[3], desc->args[4], 0, &smc_res);
+
+	if (res) {
+		res->result[0] = smc_res.a1;
+		res->result[1] = smc_res.a2;
+		res->result[2] = smc_res.a3;
+	}
+
+	return smc_res.a0;
+}
diff --git a/drivers/firmware/qcom_scm-smc.c b/drivers/firmware/qcom_scm-smc.c
new file mode 100644
index 000000000000..497c13ba98d6
--- /dev/null
+++ b/drivers/firmware/qcom_scm-smc.c
@@ -0,0 +1,151 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2015,2019 The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/io.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/qcom_scm.h>
+#include <linux/arm-smccc.h>
+#include <linux/dma-mapping.h>
+
+#include "qcom_scm.h"
+
+/**
+ * struct arm_smccc_args
+ * @args:	The array of values used in registers in smc instruction
+ */
+struct arm_smccc_args {
+	unsigned long args[8];
+};
+
+static DEFINE_MUTEX(qcom_scm_lock);
+
+#define QCOM_SCM_EBUSY_WAIT_MS 30
+#define QCOM_SCM_EBUSY_MAX_RETRY 20
+
+#define SCM_SMC_N_REG_ARGS	4
+#define SCM_SMC_FIRST_EXT_IDX	(SCM_SMC_N_REG_ARGS - 1)
+#define SCM_SMC_N_EXT_ARGS	(MAX_QCOM_SCM_ARGS - SCM_SMC_N_REG_ARGS + 1)
+#define SCM_SMC_FIRST_REG_IDX	2
+#define SCM_SMC_LAST_REG_IDX	(SCM_SMC_FIRST_REG_IDX + SCM_SMC_N_REG_ARGS - 1)
+
+static void __scm_smc_do_quirk(const struct arm_smccc_args *smc,
+			       struct arm_smccc_res *res)
+{
+	unsigned long a0 = smc->args[0];
+	struct arm_smccc_quirk quirk = { .id = ARM_SMCCC_QUIRK_QCOM_A6 };
+
+	quirk.state.a6 = 0;
+
+	do {
+		arm_smccc_smc_quirk(a0, smc->args[1], smc->args[2],
+				    smc->args[3], smc->args[4], smc->args[5],
+				    quirk.state.a6, smc->args[7], res, &quirk);
+
+		if (res->a0 == QCOM_SCM_INTERRUPTED)
+			a0 = res->a0;
+
+	} while (res->a0 == QCOM_SCM_INTERRUPTED);
+}
+
+static void __scm_smc_do(const struct arm_smccc_args *smc,
+			 struct arm_smccc_res *res, bool atomic)
+{
+	int retry_count = 0;
+
+	if (atomic) {
+		__scm_smc_do_quirk(smc, res);
+		return;
+	}
+
+	do {
+		mutex_lock(&qcom_scm_lock);
+
+		__scm_smc_do_quirk(smc, res);
+
+		mutex_unlock(&qcom_scm_lock);
+
+		if (res->a0 == QCOM_SCM_V2_EBUSY) {
+			if (retry_count++ > QCOM_SCM_EBUSY_MAX_RETRY)
+				break;
+			msleep(QCOM_SCM_EBUSY_WAIT_MS);
+		}
+	}  while (res->a0 == QCOM_SCM_V2_EBUSY);
+}
+
+int scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc,
+		 struct qcom_scm_res *res, bool atomic)
+{
+	int arglen = desc->arginfo & 0xf;
+	int i;
+	dma_addr_t args_phys = 0;
+	void *args_virt = NULL;
+	size_t alloc_len;
+	gfp_t flag = atomic ? GFP_ATOMIC : GFP_KERNEL;
+	u32 smccc_call_type = atomic ? ARM_SMCCC_FAST_CALL : ARM_SMCCC_STD_CALL;
+	u32 qcom_smccc_convention =
+			(qcom_scm_convention == SMC_CONVENTION_ARM_32) ?
+			ARM_SMCCC_SMC_32 : ARM_SMCCC_SMC_64;
+	struct arm_smccc_res smc_res;
+	struct arm_smccc_args smc = {0};
+
+	smc.args[0] = ARM_SMCCC_CALL_VAL(
+		smccc_call_type,
+		qcom_smccc_convention,
+		desc->owner,
+		SCM_SMC_FNID(desc->svc, desc->cmd));
+	smc.args[1] = desc->arginfo;
+	for (i = 0; i < SCM_SMC_N_REG_ARGS; i++)
+		smc.args[i + SCM_SMC_FIRST_REG_IDX] = desc->args[i];
+
+	if (unlikely(arglen > SCM_SMC_N_REG_ARGS)) {
+		alloc_len = SCM_SMC_N_EXT_ARGS * sizeof(u64);
+		args_virt = kzalloc(PAGE_ALIGN(alloc_len), flag);
+
+		if (!args_virt)
+			return -ENOMEM;
+
+		if (qcom_smccc_convention == ARM_SMCCC_SMC_32) {
+			__le32 *args = args_virt;
+
+			for (i = 0; i < SCM_SMC_N_EXT_ARGS; i++)
+				args[i] = cpu_to_le32(desc->args[i +
+						      SCM_SMC_FIRST_EXT_IDX]);
+		} else {
+			__le64 *args = args_virt;
+
+			for (i = 0; i < SCM_SMC_N_EXT_ARGS; i++)
+				args[i] = cpu_to_le64(desc->args[i +
+						      SCM_SMC_FIRST_EXT_IDX]);
+		}
+
+		args_phys = dma_map_single(dev, args_virt, alloc_len,
+					   DMA_TO_DEVICE);
+
+		if (dma_mapping_error(dev, args_phys)) {
+			kfree(args_virt);
+			return -ENOMEM;
+		}
+
+		smc.args[SCM_SMC_LAST_REG_IDX] = args_phys;
+	}
+
+	__scm_smc_do(&smc, &smc_res, atomic);
+
+	if (args_virt) {
+		dma_unmap_single(dev, args_phys, alloc_len, DMA_TO_DEVICE);
+		kfree(args_virt);
+	}
+
+	if (res) {
+		res->result[0] = smc_res.a1;
+		res->result[1] = smc_res.a2;
+		res->result[2] = smc_res.a3;
+	}
+
+	return (long)smc_res.a0 ? qcom_scm_remap_error(smc_res.a0) : 0;
+}
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index 1ba0df4b97ab..059bb0fbae9e 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -1,8 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/*
- * Qualcomm SCM driver
- *
- * Copyright (c) 2010,2015, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2010,2015,2019 The Linux Foundation. All rights reserved.
  * Copyright (C) 2015 Linaro Ltd.
  */
 #include <linux/platform_device.h>
@@ -19,6 +16,7 @@
 #include <linux/of_platform.h>
 #include <linux/clk.h>
 #include <linux/reset-controller.h>
+#include <linux/arm-smccc.h>
 
 #include "qcom_scm.h"
 
@@ -52,6 +50,35 @@ struct qcom_scm_mem_map_info {
 	__le64 mem_size;
 };
 
+#define QCOM_SCM_FLAG_COLDBOOT_CPU0	0x00
+#define QCOM_SCM_FLAG_COLDBOOT_CPU1	0x01
+#define QCOM_SCM_FLAG_COLDBOOT_CPU2	0x08
+#define QCOM_SCM_FLAG_COLDBOOT_CPU3	0x20
+
+#define QCOM_SCM_FLAG_WARMBOOT_CPU0	0x04
+#define QCOM_SCM_FLAG_WARMBOOT_CPU1	0x02
+#define QCOM_SCM_FLAG_WARMBOOT_CPU2	0x10
+#define QCOM_SCM_FLAG_WARMBOOT_CPU3	0x40
+
+struct qcom_scm_wb_entry {
+	int flag;
+	void *entry;
+};
+
+static struct qcom_scm_wb_entry qcom_scm_wb[] = {
+	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU0 },
+	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU1 },
+	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU2 },
+	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU3 },
+};
+
+static const char *qcom_scm_convention_names[] = {
+	[SMC_CONVENTION_UNKNOWN] = "unknown",
+	[SMC_CONVENTION_ARM_32] = "smc arm 32",
+	[SMC_CONVENTION_ARM_64] = "smc arm 64",
+	[SMC_CONVENTION_LEGACY] = "smc legacy",
+};
+
 static struct qcom_scm *__scm;
 
 static int qcom_scm_clk_enable(void)
@@ -87,149 +114,308 @@ static void qcom_scm_clk_disable(void)
 	clk_disable_unprepare(__scm->bus_clk);
 }
 
-/**
- * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus
- * @entry: Entry point function for the cpus
- * @cpus: The cpumask of cpus that will use the entry point
- *
- * Set the cold boot address of the cpus. Any cpu outside the supported
- * range would be removed from the cpu present mask.
- */
-int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
+static int __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
+					u32 cmd_id);
+
+enum qcom_scm_convention qcom_scm_convention;
+static bool has_queried __read_mostly;
+static DEFINE_SPINLOCK(query_lock);
+
+static void __query_convention(void)
 {
-	return __qcom_scm_set_cold_boot_addr(entry, cpus);
+	unsigned long flags;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_INFO,
+		.cmd = QCOM_SCM_INFO_IS_CALL_AVAIL,
+		.args[0] = SCM_SMC_FNID(QCOM_SCM_SVC_INFO,
+					   QCOM_SCM_INFO_IS_CALL_AVAIL) |
+			   (ARM_SMCCC_OWNER_SIP << ARM_SMCCC_OWNER_SHIFT),
+		.arginfo = QCOM_SCM_ARGS(1),
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+	int ret;
+
+	spin_lock_irqsave(&query_lock, flags);
+	if (has_queried)
+		goto out;
+
+	qcom_scm_convention = SMC_CONVENTION_ARM_64;
+	// Device isn't required as there is only one argument - no device
+	// needed to dma_map_single to secure world
+	ret = scm_smc_call(NULL, &desc, &res, true);
+	if (!ret && res.result[0] == 1)
+		goto out;
+
+	qcom_scm_convention = SMC_CONVENTION_ARM_32;
+	ret = scm_smc_call(NULL, &desc, &res, true);
+	if (!ret && res.result[0] == 1)
+		goto out;
+
+	qcom_scm_convention = SMC_CONVENTION_LEGACY;
+out:
+	has_queried = true;
+	spin_unlock_irqrestore(&query_lock, flags);
+	pr_info("qcom_scm: convention: %s\n",
+		qcom_scm_convention_names[qcom_scm_convention]);
 }
-EXPORT_SYMBOL(qcom_scm_set_cold_boot_addr);
 
-/**
- * qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus
- * @entry: Entry point function for the cpus
- * @cpus: The cpumask of cpus that will use the entry point
- *
- * Set the Linux entry point for the SCM to transfer control to when coming
- * out of a power down. CPU power down may be executed on cpuidle or hotplug.
- */
-int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
+static inline enum qcom_scm_convention __get_convention(void)
 {
-	return __qcom_scm_set_warm_boot_addr(__scm->dev, entry, cpus);
+	if (unlikely(!has_queried))
+		__query_convention();
+	return qcom_scm_convention;
 }
-EXPORT_SYMBOL(qcom_scm_set_warm_boot_addr);
 
 /**
- * qcom_scm_cpu_power_down() - Power down the cpu
- * @flags - Flags to flush cache
+ * qcom_scm_call() - Invoke a syscall in the secure world
+ * @dev:	device
+ * @svc_id:	service identifier
+ * @cmd_id:	command identifier
+ * @desc:	Descriptor structure containing arguments and return values
  *
- * This is an end point to power down cpu. If there was a pending interrupt,
- * the control would return from this function, otherwise, the cpu jumps to the
- * warm boot entry point set for this cpu upon reset.
+ * Sends a command to the SCM and waits for the command to finish processing.
+ * This should *only* be called in pre-emptible context.
  */
-void qcom_scm_cpu_power_down(u32 flags)
+static int qcom_scm_call(struct device *dev, const struct qcom_scm_desc *desc,
+			 struct qcom_scm_res *res)
 {
-	__qcom_scm_cpu_power_down(flags);
+	might_sleep();
+	switch (__get_convention()) {
+	case SMC_CONVENTION_ARM_32:
+	case SMC_CONVENTION_ARM_64:
+		return scm_smc_call(dev, desc, res, false);
+	case SMC_CONVENTION_LEGACY:
+		return scm_legacy_call(dev, desc, res);
+	default:
+		pr_err("Unknown current SCM calling convention.\n");
+		return -EINVAL;
+	}
 }
-EXPORT_SYMBOL(qcom_scm_cpu_power_down);
 
 /**
- * qcom_scm_hdcp_available() - Check if secure environment supports HDCP.
+ * qcom_scm_call_atomic() - atomic variation of qcom_scm_call()
+ * @dev:	device
+ * @svc_id:	service identifier
+ * @cmd_id:	command identifier
+ * @desc:	Descriptor structure containing arguments and return values
+ * @res:	Structure containing results from SMC/HVC call
  *
- * Return true if HDCP is supported, false if not.
+ * Sends a command to the SCM and waits for the command to finish processing.
+ * This can be called in atomic context.
  */
-bool qcom_scm_hdcp_available(void)
+static int qcom_scm_call_atomic(struct device *dev,
+				const struct qcom_scm_desc *desc,
+				struct qcom_scm_res *res)
 {
-	int ret = qcom_scm_clk_enable();
-
-	if (ret)
-		return ret;
+	switch (__get_convention()) {
+	case SMC_CONVENTION_ARM_32:
+	case SMC_CONVENTION_ARM_64:
+		return scm_smc_call(dev, desc, res, true);
+	case SMC_CONVENTION_LEGACY:
+		return scm_legacy_call_atomic(dev, desc, res);
+	default:
+		pr_err("Unknown current SCM calling convention.\n");
+		return -EINVAL;
+	}
+}
 
-	ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_HDCP,
-						QCOM_SCM_CMD_HDCP);
+static int __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
+					u32 cmd_id)
+{
+	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_INFO,
+		.cmd = QCOM_SCM_INFO_IS_CALL_AVAIL,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+
+	desc.arginfo = QCOM_SCM_ARGS(1);
+	switch (__get_convention()) {
+	case SMC_CONVENTION_ARM_32:
+	case SMC_CONVENTION_ARM_64:
+		desc.args[0] = SCM_SMC_FNID(svc_id, cmd_id) |
+				(ARM_SMCCC_OWNER_SIP << ARM_SMCCC_OWNER_SHIFT);
+		break;
+	case SMC_CONVENTION_LEGACY:
+		desc.args[0] = SCM_LEGACY_FNID(svc_id, cmd_id);
+		break;
+	default:
+		pr_err("Unknown SMC convention being used\n");
+		return -EINVAL;
+	}
 
-	qcom_scm_clk_disable();
+	ret = qcom_scm_call(dev, &desc, &res);
 
-	return ret > 0 ? true : false;
+	return ret ? : res.result[0];
 }
-EXPORT_SYMBOL(qcom_scm_hdcp_available);
 
 /**
- * qcom_scm_hdcp_req() - Send HDCP request.
- * @req: HDCP request array
- * @req_cnt: HDCP request array count
- * @resp: response buffer passed to SCM
+ * qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus
+ * @entry: Entry point function for the cpus
+ * @cpus: The cpumask of cpus that will use the entry point
  *
- * Write HDCP register(s) through SCM.
+ * Set the Linux entry point for the SCM to transfer control to when coming
+ * out of a power down. CPU power down may be executed on cpuidle or hotplug.
  */
-int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp)
+int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
 {
-	int ret = qcom_scm_clk_enable();
+	int ret;
+	int flags = 0;
+	int cpu;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_BOOT,
+		.cmd = QCOM_SCM_BOOT_SET_ADDR,
+		.arginfo = QCOM_SCM_ARGS(2),
+	};
 
-	if (ret)
-		return ret;
+	/*
+	 * Reassign only if we are switching from hotplug entry point
+	 * to cpuidle entry point or vice versa.
+	 */
+	for_each_cpu(cpu, cpus) {
+		if (entry == qcom_scm_wb[cpu].entry)
+			continue;
+		flags |= qcom_scm_wb[cpu].flag;
+	}
+
+	/* No change in entry function */
+	if (!flags)
+		return 0;
+
+	desc.args[0] = flags;
+	desc.args[1] = virt_to_phys(entry);
+
+	ret = qcom_scm_call(__scm->dev, &desc, NULL);
+	if (!ret) {
+		for_each_cpu(cpu, cpus)
+			qcom_scm_wb[cpu].entry = entry;
+	}
 
-	ret = __qcom_scm_hdcp_req(__scm->dev, req, req_cnt, resp);
-	qcom_scm_clk_disable();
 	return ret;
 }
-EXPORT_SYMBOL(qcom_scm_hdcp_req);
+EXPORT_SYMBOL(qcom_scm_set_warm_boot_addr);
 
 /**
- * qcom_scm_pas_supported() - Check if the peripheral authentication service is
- *			      available for the given peripherial
- * @peripheral:	peripheral id
+ * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus
+ * @entry: Entry point function for the cpus
+ * @cpus: The cpumask of cpus that will use the entry point
  *
- * Returns true if PAS is supported for this peripheral, otherwise false.
+ * Set the cold boot address of the cpus. Any cpu outside the supported
+ * range would be removed from the cpu present mask.
  */
-bool qcom_scm_pas_supported(u32 peripheral)
+int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
 {
-	int ret;
+	int flags = 0;
+	int cpu;
+	int scm_cb_flags[] = {
+		QCOM_SCM_FLAG_COLDBOOT_CPU0,
+		QCOM_SCM_FLAG_COLDBOOT_CPU1,
+		QCOM_SCM_FLAG_COLDBOOT_CPU2,
+		QCOM_SCM_FLAG_COLDBOOT_CPU3,
+	};
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_BOOT,
+		.cmd = QCOM_SCM_BOOT_SET_ADDR,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+
+	if (!cpus || (cpus && cpumask_empty(cpus)))
+		return -EINVAL;
 
-	ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL,
-					   QCOM_SCM_PAS_IS_SUPPORTED_CMD);
-	if (ret <= 0)
-		return false;
+	for_each_cpu(cpu, cpus) {
+		if (cpu < ARRAY_SIZE(scm_cb_flags))
+			flags |= scm_cb_flags[cpu];
+		else
+			set_cpu_present(cpu, false);
+	}
+
+	desc.args[0] = flags;
+	desc.args[1] = virt_to_phys(entry);
 
-	return __qcom_scm_pas_supported(__scm->dev, peripheral);
+	return qcom_scm_call_atomic(__scm ? __scm->dev : NULL, &desc, NULL);
 }
-EXPORT_SYMBOL(qcom_scm_pas_supported);
+EXPORT_SYMBOL(qcom_scm_set_cold_boot_addr);
 
 /**
- * qcom_scm_ocmem_lock_available() - is OCMEM lock/unlock interface available
+ * qcom_scm_cpu_power_down() - Power down the cpu
+ * @flags - Flags to flush cache
+ *
+ * This is an end point to power down cpu. If there was a pending interrupt,
+ * the control would return from this function, otherwise, the cpu jumps to the
+ * warm boot entry point set for this cpu upon reset.
  */
-bool qcom_scm_ocmem_lock_available(void)
+void qcom_scm_cpu_power_down(u32 flags)
 {
-	return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_OCMEM_SVC,
-					    QCOM_SCM_OCMEM_LOCK_CMD);
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_BOOT,
+		.cmd = QCOM_SCM_BOOT_TERMINATE_PC,
+		.args[0] = flags & QCOM_SCM_FLUSH_FLAG_MASK,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+
+	qcom_scm_call_atomic(__scm ? __scm->dev : NULL, &desc, NULL);
 }
-EXPORT_SYMBOL(qcom_scm_ocmem_lock_available);
+EXPORT_SYMBOL(qcom_scm_cpu_power_down);
 
-/**
- * qcom_scm_ocmem_lock() - call OCMEM lock interface to assign an OCMEM
- * region to the specified initiator
- *
- * @id:     tz initiator id
- * @offset: OCMEM offset
- * @size:   OCMEM size
- * @mode:   access mode (WIDE/NARROW)
- */
-int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset, u32 size,
-			u32 mode)
+int qcom_scm_set_remote_state(u32 state, u32 id)
 {
-	return __qcom_scm_ocmem_lock(__scm->dev, id, offset, size, mode);
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_BOOT,
+		.cmd = QCOM_SCM_BOOT_SET_REMOTE_STATE,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.args[0] = state,
+		.args[1] = id,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+	int ret;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+
+	return ret ? : res.result[0];
 }
-EXPORT_SYMBOL(qcom_scm_ocmem_lock);
+EXPORT_SYMBOL(qcom_scm_set_remote_state);
 
-/**
- * qcom_scm_ocmem_unlock() - call OCMEM unlock interface to release an OCMEM
- * region from the specified initiator
- *
- * @id:     tz initiator id
- * @offset: OCMEM offset
- * @size:   OCMEM size
- */
-int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id, u32 offset, u32 size)
+static int __qcom_scm_set_dload_mode(struct device *dev, bool enable)
 {
-	return __qcom_scm_ocmem_unlock(__scm->dev, id, offset, size);
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_BOOT,
+		.cmd = QCOM_SCM_BOOT_SET_DLOAD_MODE,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.args[0] = QCOM_SCM_BOOT_SET_DLOAD_MODE,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+
+	desc.args[1] = enable ? QCOM_SCM_BOOT_SET_DLOAD_MODE : 0;
+
+	return qcom_scm_call(__scm->dev, &desc, NULL);
+}
+
+static void qcom_scm_set_download_mode(bool enable)
+{
+	bool avail;
+	int ret = 0;
+
+	avail = __qcom_scm_is_call_available(__scm->dev,
+					     QCOM_SCM_SVC_BOOT,
+					     QCOM_SCM_BOOT_SET_DLOAD_MODE);
+	if (avail) {
+		ret = __qcom_scm_set_dload_mode(__scm->dev, enable);
+	} else if (__scm->dload_mode_addr) {
+		ret = qcom_scm_io_writel(__scm->dload_mode_addr,
+				enable ? QCOM_SCM_BOOT_SET_DLOAD_MODE : 0);
+	} else {
+		dev_err(__scm->dev,
+			"No available mechanism for setting download mode\n");
+	}
+
+	if (ret)
+		dev_err(__scm->dev, "failed to set download mode: %d\n", ret);
 }
-EXPORT_SYMBOL(qcom_scm_ocmem_unlock);
 
 /**
  * qcom_scm_pas_init_image() - Initialize peripheral authentication service
@@ -248,6 +434,14 @@ int qcom_scm_pas_init_image(u32 peripheral, const void *metadata, size_t size)
 	dma_addr_t mdata_phys;
 	void *mdata_buf;
 	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_PIL,
+		.cmd = QCOM_SCM_PIL_PAS_INIT_IMAGE,
+		.arginfo = QCOM_SCM_ARGS(2, QCOM_SCM_VAL, QCOM_SCM_RW),
+		.args[0] = peripheral,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
 
 	/*
 	 * During the scm call memory protection will be enabled for the meta
@@ -266,14 +460,16 @@ int qcom_scm_pas_init_image(u32 peripheral, const void *metadata, size_t size)
 	if (ret)
 		goto free_metadata;
 
-	ret = __qcom_scm_pas_init_image(__scm->dev, peripheral, mdata_phys);
+	desc.args[1] = mdata_phys;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
 
 	qcom_scm_clk_disable();
 
 free_metadata:
 	dma_free_coherent(__scm->dev, size, mdata_buf, mdata_phys);
 
-	return ret;
+	return ret ? : res.result[0];
 }
 EXPORT_SYMBOL(qcom_scm_pas_init_image);
 
@@ -289,15 +485,25 @@ EXPORT_SYMBOL(qcom_scm_pas_init_image);
 int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr, phys_addr_t size)
 {
 	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_PIL,
+		.cmd = QCOM_SCM_PIL_PAS_MEM_SETUP,
+		.arginfo = QCOM_SCM_ARGS(3),
+		.args[0] = peripheral,
+		.args[1] = addr,
+		.args[2] = size,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
 
 	ret = qcom_scm_clk_enable();
 	if (ret)
 		return ret;
 
-	ret = __qcom_scm_pas_mem_setup(__scm->dev, peripheral, addr, size);
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
 	qcom_scm_clk_disable();
 
-	return ret;
+	return ret ? : res.result[0];
 }
 EXPORT_SYMBOL(qcom_scm_pas_mem_setup);
 
@@ -311,15 +517,23 @@ EXPORT_SYMBOL(qcom_scm_pas_mem_setup);
 int qcom_scm_pas_auth_and_reset(u32 peripheral)
 {
 	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_PIL,
+		.cmd = QCOM_SCM_PIL_PAS_AUTH_AND_RESET,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.args[0] = peripheral,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
 
 	ret = qcom_scm_clk_enable();
 	if (ret)
 		return ret;
 
-	ret = __qcom_scm_pas_auth_and_reset(__scm->dev, peripheral);
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
 	qcom_scm_clk_disable();
 
-	return ret;
+	return ret ? : res.result[0];
 }
 EXPORT_SYMBOL(qcom_scm_pas_auth_and_reset);
 
@@ -332,18 +546,75 @@ EXPORT_SYMBOL(qcom_scm_pas_auth_and_reset);
 int qcom_scm_pas_shutdown(u32 peripheral)
 {
 	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_PIL,
+		.cmd = QCOM_SCM_PIL_PAS_SHUTDOWN,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.args[0] = peripheral,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
 
 	ret = qcom_scm_clk_enable();
 	if (ret)
 		return ret;
 
-	ret = __qcom_scm_pas_shutdown(__scm->dev, peripheral);
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+
 	qcom_scm_clk_disable();
 
-	return ret;
+	return ret ? : res.result[0];
 }
 EXPORT_SYMBOL(qcom_scm_pas_shutdown);
 
+/**
+ * qcom_scm_pas_supported() - Check if the peripheral authentication service is
+ *			      available for the given peripherial
+ * @peripheral:	peripheral id
+ *
+ * Returns true if PAS is supported for this peripheral, otherwise false.
+ */
+bool qcom_scm_pas_supported(u32 peripheral)
+{
+	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_PIL,
+		.cmd = QCOM_SCM_PIL_PAS_IS_SUPPORTED,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.args[0] = peripheral,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+
+	ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL,
+					   QCOM_SCM_PIL_PAS_IS_SUPPORTED);
+	if (ret <= 0)
+		return false;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+
+	return ret ? false : !!res.result[0];
+}
+EXPORT_SYMBOL(qcom_scm_pas_supported);
+
+static int __qcom_scm_pas_mss_reset(struct device *dev, bool reset)
+{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_PIL,
+		.cmd = QCOM_SCM_PIL_PAS_MSS_RESET,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.args[0] = reset,
+		.args[1] = 0,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+	int ret;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+
+	return ret ? : res.result[0];
+}
+
 static int qcom_scm_pas_reset_assert(struct reset_controller_dev *rcdev,
 				     unsigned long idx)
 {
@@ -367,6 +638,43 @@ static const struct reset_control_ops qcom_scm_pas_reset_ops = {
 	.deassert = qcom_scm_pas_reset_deassert,
 };
 
+int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val)
+{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_IO,
+		.cmd = QCOM_SCM_IO_READ,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.args[0] = addr,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+	int ret;
+
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+	if (ret >= 0)
+		*val = res.result[0];
+
+	return ret < 0 ? ret : 0;
+}
+EXPORT_SYMBOL(qcom_scm_io_readl);
+
+int qcom_scm_io_writel(phys_addr_t addr, unsigned int val)
+{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_IO,
+		.cmd = QCOM_SCM_IO_WRITE,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.args[0] = addr,
+		.args[1] = val,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+
+
+	return qcom_scm_call(__scm->dev, &desc, NULL);
+}
+EXPORT_SYMBOL(qcom_scm_io_writel);
+
 /**
  * qcom_scm_restore_sec_cfg_available() - Check if secure environment
  * supports restore security config interface.
@@ -376,108 +684,106 @@ static const struct reset_control_ops qcom_scm_pas_reset_ops = {
 bool qcom_scm_restore_sec_cfg_available(void)
 {
 	return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_MP,
-					    QCOM_SCM_RESTORE_SEC_CFG);
+					    QCOM_SCM_MP_RESTORE_SEC_CFG);
 }
 EXPORT_SYMBOL(qcom_scm_restore_sec_cfg_available);
 
 int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare)
 {
-	return __qcom_scm_restore_sec_cfg(__scm->dev, device_id, spare);
-}
-EXPORT_SYMBOL(qcom_scm_restore_sec_cfg);
-
-int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size)
-{
-	return __qcom_scm_iommu_secure_ptbl_size(__scm->dev, spare, size);
-}
-EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_size);
-
-int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare)
-{
-	return __qcom_scm_iommu_secure_ptbl_init(__scm->dev, addr, size, spare);
-}
-EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_init);
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_MP,
+		.cmd = QCOM_SCM_MP_RESTORE_SEC_CFG,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.args[0] = device_id,
+		.args[1] = spare,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+	int ret;
 
-int qcom_scm_qsmmu500_wait_safe_toggle(bool en)
-{
-	return __qcom_scm_qsmmu500_wait_safe_toggle(__scm->dev, en);
-}
-EXPORT_SYMBOL(qcom_scm_qsmmu500_wait_safe_toggle);
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
 
-int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val)
-{
-	return __qcom_scm_io_readl(__scm->dev, addr, val);
+	return ret ? : res.result[0];
 }
-EXPORT_SYMBOL(qcom_scm_io_readl);
+EXPORT_SYMBOL(qcom_scm_restore_sec_cfg);
 
-int qcom_scm_io_writel(phys_addr_t addr, unsigned int val)
+int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size)
 {
-	return __qcom_scm_io_writel(__scm->dev, addr, val);
-}
-EXPORT_SYMBOL(qcom_scm_io_writel);
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_MP,
+		.cmd = QCOM_SCM_MP_IOMMU_SECURE_PTBL_SIZE,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.args[0] = spare,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+	int ret;
 
-static void qcom_scm_set_download_mode(bool enable)
-{
-	bool avail;
-	int ret = 0;
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
 
-	avail = __qcom_scm_is_call_available(__scm->dev,
-					     QCOM_SCM_SVC_BOOT,
-					     QCOM_SCM_SET_DLOAD_MODE);
-	if (avail) {
-		ret = __qcom_scm_set_dload_mode(__scm->dev, enable);
-	} else if (__scm->dload_mode_addr) {
-		ret = __qcom_scm_io_writel(__scm->dev, __scm->dload_mode_addr,
-					   enable ? QCOM_SCM_SET_DLOAD_MODE : 0);
-	} else {
-		dev_err(__scm->dev,
-			"No available mechanism for setting download mode\n");
-	}
+	if (size)
+		*size = res.result[0];
 
-	if (ret)
-		dev_err(__scm->dev, "failed to set download mode: %d\n", ret);
+	return ret ? : res.result[1];
 }
+EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_size);
 
-static int qcom_scm_find_dload_address(struct device *dev, u64 *addr)
+int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare)
 {
-	struct device_node *tcsr;
-	struct device_node *np = dev->of_node;
-	struct resource res;
-	u32 offset;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_MP,
+		.cmd = QCOM_SCM_MP_IOMMU_SECURE_PTBL_INIT,
+		.arginfo = QCOM_SCM_ARGS(3, QCOM_SCM_RW, QCOM_SCM_VAL,
+					 QCOM_SCM_VAL),
+		.args[0] = addr,
+		.args[1] = size,
+		.args[2] = spare,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
 	int ret;
 
-	tcsr = of_parse_phandle(np, "qcom,dload-mode", 0);
-	if (!tcsr)
-		return 0;
-
-	ret = of_address_to_resource(tcsr, 0, &res);
-	of_node_put(tcsr);
-	if (ret)
-		return ret;
-
-	ret = of_property_read_u32_index(np, "qcom,dload-mode", 1, &offset);
-	if (ret < 0)
-		return ret;
+	desc.args[0] = addr;
+	desc.args[1] = size;
+	desc.args[2] = spare;
+	desc.arginfo = QCOM_SCM_ARGS(3, QCOM_SCM_RW, QCOM_SCM_VAL,
+				     QCOM_SCM_VAL);
 
-	*addr = res.start + offset;
+	ret = qcom_scm_call(__scm->dev, &desc, NULL);
 
-	return 0;
-}
+	/* the pg table has been initialized already, ignore the error */
+	if (ret == -EPERM)
+		ret = 0;
 
-/**
- * qcom_scm_is_available() - Checks if SCM is available
- */
-bool qcom_scm_is_available(void)
-{
-	return !!__scm;
+	return ret;
 }
-EXPORT_SYMBOL(qcom_scm_is_available);
+EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_init);
 
-int qcom_scm_set_remote_state(u32 state, u32 id)
+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)
 {
-	return __qcom_scm_set_remote_state(__scm->dev, state, id);
+	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_MP,
+		.cmd = QCOM_SCM_MP_ASSIGN,
+		.arginfo = QCOM_SCM_ARGS(7, QCOM_SCM_RO, QCOM_SCM_VAL,
+					 QCOM_SCM_RO, QCOM_SCM_VAL, QCOM_SCM_RO,
+					 QCOM_SCM_VAL, QCOM_SCM_VAL),
+		.args[0] = mem_region,
+		.args[1] = mem_sz,
+		.args[2] = src,
+		.args[3] = src_sz,
+		.args[4] = dest,
+		.args[5] = dest_sz,
+		.args[6] = 0,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+
+	ret = qcom_scm_call(dev, &desc, &res);
+
+	return ret ? : res.result[0];
 }
-EXPORT_SYMBOL(qcom_scm_set_remote_state);
 
 /**
  * qcom_scm_assign_mem() - Make a secure call to reassign memory ownership
@@ -561,6 +867,184 @@ int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
 }
 EXPORT_SYMBOL(qcom_scm_assign_mem);
 
+/**
+ * qcom_scm_ocmem_lock_available() - is OCMEM lock/unlock interface available
+ */
+bool qcom_scm_ocmem_lock_available(void)
+{
+	return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_OCMEM,
+					    QCOM_SCM_OCMEM_LOCK_CMD);
+}
+EXPORT_SYMBOL(qcom_scm_ocmem_lock_available);
+
+/**
+ * qcom_scm_ocmem_lock() - call OCMEM lock interface to assign an OCMEM
+ * region to the specified initiator
+ *
+ * @id:     tz initiator id
+ * @offset: OCMEM offset
+ * @size:   OCMEM size
+ * @mode:   access mode (WIDE/NARROW)
+ */
+int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset, u32 size,
+			u32 mode)
+{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_OCMEM,
+		.cmd = QCOM_SCM_OCMEM_LOCK_CMD,
+		.args[0] = id,
+		.args[1] = offset,
+		.args[2] = size,
+		.args[3] = mode,
+		.arginfo = QCOM_SCM_ARGS(4),
+	};
+
+	return qcom_scm_call(__scm->dev, &desc, NULL);
+}
+EXPORT_SYMBOL(qcom_scm_ocmem_lock);
+
+/**
+ * qcom_scm_ocmem_unlock() - call OCMEM unlock interface to release an OCMEM
+ * region from the specified initiator
+ *
+ * @id:     tz initiator id
+ * @offset: OCMEM offset
+ * @size:   OCMEM size
+ */
+int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id, u32 offset, u32 size)
+{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_OCMEM,
+		.cmd = QCOM_SCM_OCMEM_UNLOCK_CMD,
+		.args[0] = id,
+		.args[1] = offset,
+		.args[2] = size,
+		.arginfo = QCOM_SCM_ARGS(3),
+	};
+
+	return qcom_scm_call(__scm->dev, &desc, NULL);
+}
+EXPORT_SYMBOL(qcom_scm_ocmem_unlock);
+
+/**
+ * qcom_scm_hdcp_available() - Check if secure environment supports HDCP.
+ *
+ * Return true if HDCP is supported, false if not.
+ */
+bool qcom_scm_hdcp_available(void)
+{
+	int ret = qcom_scm_clk_enable();
+
+	if (ret)
+		return ret;
+
+	ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_HDCP,
+						QCOM_SCM_HDCP_INVOKE);
+
+	qcom_scm_clk_disable();
+
+	return ret > 0 ? true : false;
+}
+EXPORT_SYMBOL(qcom_scm_hdcp_available);
+
+/**
+ * qcom_scm_hdcp_req() - Send HDCP request.
+ * @req: HDCP request array
+ * @req_cnt: HDCP request array count
+ * @resp: response buffer passed to SCM
+ *
+ * Write HDCP register(s) through SCM.
+ */
+int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp)
+{
+	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_HDCP,
+		.cmd = QCOM_SCM_HDCP_INVOKE,
+		.arginfo = QCOM_SCM_ARGS(10),
+		.args = {
+			req[0].addr,
+			req[0].val,
+			req[1].addr,
+			req[1].val,
+			req[2].addr,
+			req[2].val,
+			req[3].addr,
+			req[3].val,
+			req[4].addr,
+			req[4].val
+		},
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+
+	if (req_cnt > QCOM_SCM_HDCP_MAX_REQ_CNT)
+		return -ERANGE;
+
+	ret = qcom_scm_clk_enable();
+	if (ret)
+		return ret;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+	*resp = res.result[0];
+
+	qcom_scm_clk_disable();
+
+	return ret;
+}
+EXPORT_SYMBOL(qcom_scm_hdcp_req);
+
+int qcom_scm_qsmmu500_wait_safe_toggle(bool en)
+{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_SMMU_PROGRAM,
+		.cmd = QCOM_SCM_SMMU_CONFIG_ERRATA1,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.args[0] = QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL,
+		.args[1] = en,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+
+
+	return qcom_scm_call_atomic(__scm->dev, &desc, NULL);
+}
+EXPORT_SYMBOL(qcom_scm_qsmmu500_wait_safe_toggle);
+
+static int qcom_scm_find_dload_address(struct device *dev, u64 *addr)
+{
+	struct device_node *tcsr;
+	struct device_node *np = dev->of_node;
+	struct resource res;
+	u32 offset;
+	int ret;
+
+	tcsr = of_parse_phandle(np, "qcom,dload-mode", 0);
+	if (!tcsr)
+		return 0;
+
+	ret = of_address_to_resource(tcsr, 0, &res);
+	of_node_put(tcsr);
+	if (ret)
+		return ret;
+
+	ret = of_property_read_u32_index(np, "qcom,dload-mode", 1, &offset);
+	if (ret < 0)
+		return ret;
+
+	*addr = res.start + offset;
+
+	return 0;
+}
+
+/**
+ * qcom_scm_is_available() - Checks if SCM is available
+ */
+bool qcom_scm_is_available(void)
+{
+	return !!__scm;
+}
+EXPORT_SYMBOL(qcom_scm_is_available);
+
 static int qcom_scm_probe(struct platform_device *pdev)
 {
 	struct qcom_scm *scm;
@@ -631,7 +1115,7 @@ static int qcom_scm_probe(struct platform_device *pdev)
 	__scm = scm;
 	__scm->dev = &pdev->dev;
 
-	__qcom_scm_init();
+	__query_convention();
 
 	/*
 	 * If requested enable "download mode", from this point on warmboot
diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
index 81dcf5f1138e..d9ed670da222 100644
--- a/drivers/firmware/qcom_scm.h
+++ b/drivers/firmware/qcom_scm.h
@@ -1,71 +1,116 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
-/* Copyright (c) 2010-2015, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2010-2015,2019 The Linux Foundation. All rights reserved.
  */
 #ifndef __QCOM_SCM_INT_H
 #define __QCOM_SCM_INT_H
 
-#define QCOM_SCM_SVC_BOOT		0x1
-#define QCOM_SCM_BOOT_ADDR		0x1
-#define QCOM_SCM_SET_DLOAD_MODE		0x10
-#define QCOM_SCM_BOOT_ADDR_MC		0x11
-#define QCOM_SCM_SET_REMOTE_STATE	0xa
-extern int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id);
-extern int __qcom_scm_set_dload_mode(struct device *dev, bool enable);
-
-#define QCOM_SCM_FLAG_HLOS		0x01
-#define QCOM_SCM_FLAG_COLDBOOT_MC	0x02
-#define QCOM_SCM_FLAG_WARMBOOT_MC	0x04
-extern int __qcom_scm_set_warm_boot_addr(struct device *dev, void *entry,
-		const cpumask_t *cpus);
-extern int __qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus);
-
-#define QCOM_SCM_CMD_TERMINATE_PC	0x2
+enum qcom_scm_convention {
+	SMC_CONVENTION_UNKNOWN,
+	SMC_CONVENTION_LEGACY,
+	SMC_CONVENTION_ARM_32,
+	SMC_CONVENTION_ARM_64,
+};
+
+extern enum qcom_scm_convention qcom_scm_convention;
+
+#define MAX_QCOM_SCM_ARGS 10
+#define MAX_QCOM_SCM_RETS 3
+
+enum qcom_scm_arg_types {
+	QCOM_SCM_VAL,
+	QCOM_SCM_RO,
+	QCOM_SCM_RW,
+	QCOM_SCM_BUFVAL,
+};
+
+#define QCOM_SCM_ARGS_IMPL(num, a, b, c, d, e, f, g, h, i, j, ...) (\
+			   (((a) & 0x3) << 4) | \
+			   (((b) & 0x3) << 6) | \
+			   (((c) & 0x3) << 8) | \
+			   (((d) & 0x3) << 10) | \
+			   (((e) & 0x3) << 12) | \
+			   (((f) & 0x3) << 14) | \
+			   (((g) & 0x3) << 16) | \
+			   (((h) & 0x3) << 18) | \
+			   (((i) & 0x3) << 20) | \
+			   (((j) & 0x3) << 22) | \
+			   ((num) & 0xf))
+
+#define QCOM_SCM_ARGS(...) QCOM_SCM_ARGS_IMPL(__VA_ARGS__, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
+
+
+/**
+ * struct qcom_scm_desc
+ * @arginfo:	Metadata describing the arguments in args[]
+ * @args:	The array of arguments for the secure syscall
+ */
+struct qcom_scm_desc {
+	u32 svc;
+	u32 cmd;
+	u32 arginfo;
+	u64 args[MAX_QCOM_SCM_ARGS];
+	u32 owner;
+};
+
+/**
+ * struct qcom_scm_res
+ * @result:	The values returned by the secure syscall
+ */
+struct qcom_scm_res {
+	u64 result[MAX_QCOM_SCM_RETS];
+};
+
+#define SCM_SMC_FNID(s, c)	((((s) & 0xFF) << 8) | ((c) & 0xFF))
+extern int scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc,
+			struct qcom_scm_res *res, bool atomic);
+
+#define SCM_LEGACY_FNID(s, c)	(((s) << 10) | ((c) & 0x3ff))
+extern int scm_legacy_call_atomic(struct device *dev,
+				  const struct qcom_scm_desc *desc,
+				  struct qcom_scm_res *res);
+extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
+			   struct qcom_scm_res *res);
+
+#define QCOM_SCM_SVC_BOOT		0x01
+#define QCOM_SCM_BOOT_SET_ADDR		0x01
+#define QCOM_SCM_BOOT_TERMINATE_PC	0x02
+#define QCOM_SCM_BOOT_SET_DLOAD_MODE	0x10
+#define QCOM_SCM_BOOT_SET_REMOTE_STATE	0x0a
 #define QCOM_SCM_FLUSH_FLAG_MASK	0x3
-#define QCOM_SCM_CMD_CORE_HOTPLUGGED	0x10
-extern void __qcom_scm_cpu_power_down(u32 flags);
 
-#define QCOM_SCM_SVC_IO			0x5
-#define QCOM_SCM_IO_READ		0x1
-#define QCOM_SCM_IO_WRITE		0x2
-extern int __qcom_scm_io_readl(struct device *dev, phys_addr_t addr, unsigned int *val);
-extern int __qcom_scm_io_writel(struct device *dev, phys_addr_t addr, unsigned int val);
+#define QCOM_SCM_SVC_PIL		0x02
+#define QCOM_SCM_PIL_PAS_INIT_IMAGE	0x01
+#define QCOM_SCM_PIL_PAS_MEM_SETUP	0x02
+#define QCOM_SCM_PIL_PAS_AUTH_AND_RESET	0x05
+#define QCOM_SCM_PIL_PAS_SHUTDOWN	0x06
+#define QCOM_SCM_PIL_PAS_IS_SUPPORTED	0x07
+#define QCOM_SCM_PIL_PAS_MSS_RESET	0x0a
+
+#define QCOM_SCM_SVC_IO			0x05
+#define QCOM_SCM_IO_READ		0x01
+#define QCOM_SCM_IO_WRITE		0x02
+
+#define QCOM_SCM_SVC_INFO		0x06
+#define QCOM_SCM_INFO_IS_CALL_AVAIL	0x01
 
-#define QCOM_SCM_SVC_INFO		0x6
-#define QCOM_IS_CALL_AVAIL_CMD		0x1
-extern int __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
-		u32 cmd_id);
+#define QCOM_SCM_SVC_MP				0x0c
+#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_ASSIGN			0x16
+
+#define QCOM_SCM_SVC_OCMEM		0x0f
+#define QCOM_SCM_OCMEM_LOCK_CMD		0x01
+#define QCOM_SCM_OCMEM_UNLOCK_CMD	0x02
 
 #define QCOM_SCM_SVC_HDCP		0x11
-#define QCOM_SCM_CMD_HDCP		0x01
-extern int __qcom_scm_hdcp_req(struct device *dev,
-		struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp);
+#define QCOM_SCM_HDCP_INVOKE		0x01
 
-extern void __qcom_scm_init(void);
+#define QCOM_SCM_SVC_SMMU_PROGRAM		0x15
+#define QCOM_SCM_SMMU_CONFIG_ERRATA1		0x03
+#define QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL	0x02
 
-#define QCOM_SCM_OCMEM_SVC			0xf
-#define QCOM_SCM_OCMEM_LOCK_CMD		0x1
-#define QCOM_SCM_OCMEM_UNLOCK_CMD		0x2
-
-extern int __qcom_scm_ocmem_lock(struct device *dev, u32 id, u32 offset,
-				 u32 size, u32 mode);
-extern int __qcom_scm_ocmem_unlock(struct device *dev, u32 id, u32 offset,
-				   u32 size);
-
-#define QCOM_SCM_SVC_PIL		0x2
-#define QCOM_SCM_PAS_INIT_IMAGE_CMD	0x1
-#define QCOM_SCM_PAS_MEM_SETUP_CMD	0x2
-#define QCOM_SCM_PAS_AUTH_AND_RESET_CMD	0x5
-#define QCOM_SCM_PAS_SHUTDOWN_CMD	0x6
-#define QCOM_SCM_PAS_IS_SUPPORTED_CMD	0x7
-#define QCOM_SCM_PAS_MSS_RESET		0xa
-extern bool __qcom_scm_pas_supported(struct device *dev, u32 peripheral);
-extern int  __qcom_scm_pas_init_image(struct device *dev, u32 peripheral,
-		dma_addr_t metadata_phys);
-extern int  __qcom_scm_pas_mem_setup(struct device *dev, u32 peripheral,
-		phys_addr_t addr, phys_addr_t size);
-extern int  __qcom_scm_pas_auth_and_reset(struct device *dev, u32 peripheral);
-extern int  __qcom_scm_pas_shutdown(struct device *dev, u32 peripheral);
-extern int  __qcom_scm_pas_mss_reset(struct device *dev, bool reset);
+extern void __qcom_scm_init(void);
 
 /* common error codes */
 #define QCOM_SCM_V2_EBUSY	-12
@@ -94,25 +139,4 @@ static inline int qcom_scm_remap_error(int err)
 	return -EINVAL;
 }
 
-#define QCOM_SCM_SVC_MP			0xc
-#define QCOM_SCM_RESTORE_SEC_CFG	2
-extern int __qcom_scm_restore_sec_cfg(struct device *dev, u32 device_id,
-				      u32 spare);
-#define QCOM_SCM_IOMMU_SECURE_PTBL_SIZE	3
-#define QCOM_SCM_IOMMU_SECURE_PTBL_INIT	4
-#define QCOM_SCM_SVC_SMMU_PROGRAM	0x15
-#define QCOM_SCM_CONFIG_ERRATA1		0x3
-#define QCOM_SCM_CONFIG_ERRATA1_CLIENT_ALL	0x2
-extern int __qcom_scm_iommu_secure_ptbl_size(struct device *dev, u32 spare,
-					     size_t *size);
-extern int __qcom_scm_iommu_secure_ptbl_init(struct device *dev, u64 addr,
-					     u32 size, u32 spare);
-extern int __qcom_scm_qsmmu500_wait_safe_toggle(struct device *dev,
-						bool enable);
-#define QCOM_MEM_PROT_ASSIGN_ID	0x16
-extern 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);
-
 #endif
diff --git a/drivers/firmware/turris-mox-rwtm.c b/drivers/firmware/turris-mox-rwtm.c
index 72be58960e54..e27f68437b56 100644
--- a/drivers/firmware/turris-mox-rwtm.c
+++ b/drivers/firmware/turris-mox-rwtm.c
@@ -197,7 +197,7 @@ static int mox_get_board_info(struct mox_rwtm *rwtm)
 		rwtm->serial_number = reply->status[1];
 		rwtm->serial_number <<= 32;
 		rwtm->serial_number |= reply->status[0];
-			rwtm->board_version = reply->status[2];
+		rwtm->board_version = reply->status[2];
 		rwtm->ram_size = reply->status[3];
 		reply_to_mac_addr(rwtm->mac_address1, reply->status[4],
 				  reply->status[5]);
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 74d9f13d72c4..ecc339d846de 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -26,6 +26,9 @@
 
 static const struct zynqmp_eemi_ops *eemi_ops_tbl;
 
+static bool feature_check_enabled;
+static u32 zynqmp_pm_features[PM_API_MAX];
+
 static const struct mfd_cell firmware_devs[] = {
 	{
 		.name = "zynqmp_power_controller",
@@ -44,6 +47,8 @@ static int zynqmp_pm_ret_code(u32 ret_status)
 	case XST_PM_SUCCESS:
 	case XST_PM_DOUBLE_REQ:
 		return 0;
+	case XST_PM_NO_FEATURE:
+		return -ENOTSUPP;
 	case XST_PM_NO_ACCESS:
 		return -EACCES;
 	case XST_PM_ABORT_SUSPEND:
@@ -129,6 +134,39 @@ static noinline int do_fw_call_hvc(u64 arg0, u64 arg1, u64 arg2,
 }
 
 /**
+ * zynqmp_pm_feature() - Check weather given feature is supported or not
+ * @api_id:		API ID to check
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_feature(u32 api_id)
+{
+	int ret;
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+	u64 smc_arg[2];
+
+	if (!feature_check_enabled)
+		return 0;
+
+	/* Return value if feature is already checked */
+	if (zynqmp_pm_features[api_id] != PM_FEATURE_UNCHECKED)
+		return zynqmp_pm_features[api_id];
+
+	smc_arg[0] = PM_SIP_SVC | PM_FEATURE_CHECK;
+	smc_arg[1] = api_id;
+
+	ret = do_fw_call(smc_arg[0], smc_arg[1], 0, ret_payload);
+	if (ret) {
+		zynqmp_pm_features[api_id] = PM_FEATURE_INVALID;
+		return PM_FEATURE_INVALID;
+	}
+
+	zynqmp_pm_features[api_id] = ret_payload[1];
+
+	return zynqmp_pm_features[api_id];
+}
+
+/**
  * zynqmp_pm_invoke_fn() - Invoke the system-level platform management layer
  *			   caller function depending on the configuration
  * @pm_api_id:		Requested PM-API call
@@ -162,6 +200,9 @@ int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 	 */
 	u64 smc_arg[4];
 
+	if (zynqmp_pm_feature(pm_api_id) == PM_FEATURE_INVALID)
+		return -ENOTSUPP;
+
 	smc_arg[0] = PM_SIP_SVC | pm_api_id;
 	smc_arg[1] = ((u64)arg1 << 32) | arg0;
 	smc_arg[2] = ((u64)arg3 << 32) | arg2;
@@ -717,6 +758,8 @@ static int zynqmp_firmware_probe(struct platform_device *pdev)
 		np = of_find_compatible_node(NULL, NULL, "xlnx,versal");
 		if (!np)
 			return 0;
+
+		feature_check_enabled = true;
 	}
 	of_node_put(np);