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-rw-r--r--drivers/firmware/Kconfig1
-rw-r--r--drivers/firmware/arm_scmi/Makefile1
-rw-r--r--drivers/firmware/arm_scpi.c13
-rw-r--r--drivers/firmware/broadcom/Kconfig1
-rw-r--r--drivers/firmware/broadcom/Makefile1
-rw-r--r--drivers/firmware/broadcom/bcm47xx_nvram.c6
-rw-r--r--drivers/firmware/dmi-id.c3
-rw-r--r--drivers/firmware/dmi-sysfs.c1
-rw-r--r--drivers/firmware/dmi_scan.c1
-rw-r--r--drivers/firmware/efi/Kconfig1
-rw-r--r--drivers/firmware/efi/efi.c3
-rw-r--r--drivers/firmware/efi/test/Makefile1
-rw-r--r--drivers/firmware/google/Kconfig1
-rw-r--r--drivers/firmware/google/gsmi.c1
-rw-r--r--drivers/firmware/imx/Kconfig1
-rw-r--r--drivers/firmware/meson/Kconfig1
-rw-r--r--drivers/firmware/meson/Makefile1
-rw-r--r--drivers/firmware/psci/Kconfig1
-rw-r--r--drivers/firmware/psci/psci.c9
-rw-r--r--drivers/firmware/psci/psci_checker.c9
-rw-r--r--drivers/firmware/scpi_pm_domain.c13
-rw-r--r--drivers/firmware/tegra/Kconfig1
-rw-r--r--drivers/firmware/tegra/Makefile1
-rw-r--r--drivers/firmware/ti_sci.c651
-rw-r--r--drivers/firmware/ti_sci.h102
-rw-r--r--drivers/firmware/trusted_foundations.c11
26 files changed, 779 insertions, 57 deletions
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 11fda9eb2466..9026df923542 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
diff --git a/drivers/firmware/arm_scmi/Makefile b/drivers/firmware/arm_scmi/Makefile
index 99e36c580fbc..c47d28d556b6 100644
--- a/drivers/firmware/arm_scmi/Makefile
+++ b/drivers/firmware/arm_scmi/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
obj-y = scmi-bus.o scmi-driver.o scmi-protocols.o
scmi-bus-y = bus.o
scmi-driver-y = driver.o
diff --git a/drivers/firmware/arm_scpi.c b/drivers/firmware/arm_scpi.c
index c7d06a36b23a..725164b83242 100644
--- a/drivers/firmware/arm_scpi.c
+++ b/drivers/firmware/arm_scpi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* System Control and Power Interface (SCPI) Message Protocol driver
*
@@ -11,18 +12,6 @@
* clocks configuration, thermal sensors and many others.
*
* Copyright (C) 2015 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
diff --git a/drivers/firmware/broadcom/Kconfig b/drivers/firmware/broadcom/Kconfig
index f77cdb3a041f..64680824f984 100644
--- a/drivers/firmware/broadcom/Kconfig
+++ b/drivers/firmware/broadcom/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
config BCM47XX_NVRAM
bool "Broadcom NVRAM driver"
depends on BCM47XX || ARCH_BCM_5301X
diff --git a/drivers/firmware/broadcom/Makefile b/drivers/firmware/broadcom/Makefile
index f93efc479b8b..72c7fdc20c77 100644
--- a/drivers/firmware/broadcom/Makefile
+++ b/drivers/firmware/broadcom/Makefile
@@ -1,2 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_BCM47XX_NVRAM) += bcm47xx_nvram.o
obj-$(CONFIG_BCM47XX_SPROM) += bcm47xx_sprom.o
diff --git a/drivers/firmware/broadcom/bcm47xx_nvram.c b/drivers/firmware/broadcom/bcm47xx_nvram.c
index d25f080fcb0d..77eb74666ecb 100644
--- a/drivers/firmware/broadcom/bcm47xx_nvram.c
+++ b/drivers/firmware/broadcom/bcm47xx_nvram.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* BCM947xx nvram variable access
*
* Copyright (C) 2005 Broadcom Corporation
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
*/
#include <linux/io.h>
diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c
index 624a11cb07e2..ff39f64f2aae 100644
--- a/drivers/firmware/dmi-id.c
+++ b/drivers/firmware/dmi-id.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Export SMBIOS/DMI info via sysfs to userspace
*
* Copyright 2007, Lennart Poettering
- *
- * Licensed under GPLv2
*/
#include <linux/module.h>
diff --git a/drivers/firmware/dmi-sysfs.c b/drivers/firmware/dmi-sysfs.c
index ecf2eeb5f6f9..b6180023eba7 100644
--- a/drivers/firmware/dmi-sysfs.c
+++ b/drivers/firmware/dmi-sysfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* dmi-sysfs.c
*
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index fae2d5c43314..35ed56b9c34f 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
#include <linux/types.h>
#include <linux/string.h>
#include <linux/init.h>
diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig
index 190be0b1d109..d4ea929e8b34 100644
--- a/drivers/firmware/efi/Kconfig
+++ b/drivers/firmware/efi/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
menu "EFI (Extensible Firmware Interface) Support"
depends on EFI
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 55b77c576c42..521a541d02ad 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -636,6 +636,9 @@ int __init efi_config_init(efi_config_table_type_t *arch_tables)
void *config_tables;
int sz, ret;
+ if (efi.systab->nr_tables == 0)
+ return 0;
+
if (efi_enabled(EFI_64BIT))
sz = sizeof(efi_config_table_64_t);
else
diff --git a/drivers/firmware/efi/test/Makefile b/drivers/firmware/efi/test/Makefile
index bcd4577d40e6..4197088550e6 100644
--- a/drivers/firmware/efi/test/Makefile
+++ b/drivers/firmware/efi/test/Makefile
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_EFI_TEST) += efi_test.o
diff --git a/drivers/firmware/google/Kconfig b/drivers/firmware/google/Kconfig
index 91a0404affe2..a3a6ca659ffa 100644
--- a/drivers/firmware/google/Kconfig
+++ b/drivers/firmware/google/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
menuconfig GOOGLE_FIRMWARE
bool "Google Firmware Drivers"
default n
diff --git a/drivers/firmware/google/gsmi.c b/drivers/firmware/google/gsmi.c
index 82ce1e6d261e..edaa4e5d84ad 100644
--- a/drivers/firmware/google/gsmi.c
+++ b/drivers/firmware/google/gsmi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2010 Google Inc. All Rights Reserved.
* Author: dlaurie@google.com (Duncan Laurie)
diff --git a/drivers/firmware/imx/Kconfig b/drivers/firmware/imx/Kconfig
index 6a7a7c2c5b5f..42b566f8903f 100644
--- a/drivers/firmware/imx/Kconfig
+++ b/drivers/firmware/imx/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
config IMX_SCU
bool "IMX SCU Protocol driver"
depends on IMX_MBOX
diff --git a/drivers/firmware/meson/Kconfig b/drivers/firmware/meson/Kconfig
index 170d7e8bcdfb..2671dcd0ad92 100644
--- a/drivers/firmware/meson/Kconfig
+++ b/drivers/firmware/meson/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
#
# Amlogic Secure Monitor driver
#
diff --git a/drivers/firmware/meson/Makefile b/drivers/firmware/meson/Makefile
index 9ab3884f96bc..c6c09483b622 100644
--- a/drivers/firmware/meson/Makefile
+++ b/drivers/firmware/meson/Makefile
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_MESON_SM) += meson_sm.o
diff --git a/drivers/firmware/psci/Kconfig b/drivers/firmware/psci/Kconfig
index 26a3b32bf7ab..97944168b5e6 100644
--- a/drivers/firmware/psci/Kconfig
+++ b/drivers/firmware/psci/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
config ARM_PSCI_FW
bool
diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index fe090ef43d28..f82ccd39a913 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -1,12 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*
* Copyright (C) 2015 ARM Limited
*/
diff --git a/drivers/firmware/psci/psci_checker.c b/drivers/firmware/psci/psci_checker.c
index 346943657962..08c85099d4d0 100644
--- a/drivers/firmware/psci/psci_checker.c
+++ b/drivers/firmware/psci/psci_checker.c
@@ -1,12 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*
* Copyright (C) 2016 ARM Limited
*/
diff --git a/drivers/firmware/scpi_pm_domain.c b/drivers/firmware/scpi_pm_domain.c
index 390aa13391e4..51201600d789 100644
--- a/drivers/firmware/scpi_pm_domain.c
+++ b/drivers/firmware/scpi_pm_domain.c
@@ -1,19 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* SCPI Generic power domain support.
*
* Copyright (C) 2016 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/err.h>
diff --git a/drivers/firmware/tegra/Kconfig b/drivers/firmware/tegra/Kconfig
index ff2730d5c468..a887731f50d6 100644
--- a/drivers/firmware/tegra/Kconfig
+++ b/drivers/firmware/tegra/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
menu "Tegra firmware driver"
config TEGRA_IVC
diff --git a/drivers/firmware/tegra/Makefile b/drivers/firmware/tegra/Makefile
index 676b01caff05..49c87e00fafb 100644
--- a/drivers/firmware/tegra/Makefile
+++ b/drivers/firmware/tegra/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
tegra-bpmp-y = bpmp.o
tegra-bpmp-$(CONFIG_ARCH_TEGRA_210_SOC) += bpmp-tegra210.o
tegra-bpmp-$(CONFIG_ARCH_TEGRA_186_SOC) += bpmp-tegra186.o
diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c
index 3fbbb61012c4..ef93406ace1b 100644
--- a/drivers/firmware/ti_sci.c
+++ b/drivers/firmware/ti_sci.c
@@ -65,18 +65,36 @@ struct ti_sci_xfers_info {
};
/**
+ * struct ti_sci_rm_type_map - Structure representing TISCI Resource
+ * management representation of dev_ids.
+ * @dev_id: TISCI device ID
+ * @type: Corresponding id as identified by TISCI RM.
+ *
+ * Note: This is used only as a work around for using RM range apis
+ * for AM654 SoC. For future SoCs dev_id will be used as type
+ * for RM range APIs. In order to maintain ABI backward compatibility
+ * type is not being changed for AM654 SoC.
+ */
+struct ti_sci_rm_type_map {
+ u32 dev_id;
+ u16 type;
+};
+
+/**
* struct ti_sci_desc - Description of SoC integration
* @default_host_id: Host identifier representing the compute entity
* @max_rx_timeout_ms: Timeout for communication with SoC (in Milliseconds)
* @max_msgs: Maximum number of messages that can be pending
* simultaneously in the system
* @max_msg_size: Maximum size of data per message that can be handled.
+ * @rm_type_map: RM resource type mapping structure.
*/
struct ti_sci_desc {
u8 default_host_id;
int max_rx_timeout_ms;
int max_msgs;
int max_msg_size;
+ struct ti_sci_rm_type_map *rm_type_map;
};
/**
@@ -1600,6 +1618,392 @@ fail:
return ret;
}
+static int ti_sci_get_resource_type(struct ti_sci_info *info, u16 dev_id,
+ u16 *type)
+{
+ struct ti_sci_rm_type_map *rm_type_map = info->desc->rm_type_map;
+ bool found = false;
+ int i;
+
+ /* If map is not provided then assume dev_id is used as type */
+ if (!rm_type_map) {
+ *type = dev_id;
+ return 0;
+ }
+
+ for (i = 0; rm_type_map[i].dev_id; i++) {
+ if (rm_type_map[i].dev_id == dev_id) {
+ *type = rm_type_map[i].type;
+ found = true;
+ break;
+ }
+ }
+
+ if (!found)
+ return -EINVAL;
+
+ return 0;
+}
+
+/**
+ * ti_sci_get_resource_range - Helper to get a range of resources assigned
+ * to a host. Resource is uniquely identified by
+ * type and subtype.
+ * @handle: Pointer to TISCI handle.
+ * @dev_id: TISCI device ID.
+ * @subtype: Resource assignment subtype that is being requested
+ * from the given device.
+ * @s_host: Host processor ID to which the resources are allocated
+ * @range_start: Start index of the resource range
+ * @range_num: Number of resources in the range
+ *
+ * Return: 0 if all went fine, else return appropriate error.
+ */
+static int ti_sci_get_resource_range(const struct ti_sci_handle *handle,
+ u32 dev_id, u8 subtype, u8 s_host,
+ u16 *range_start, u16 *range_num)
+{
+ struct ti_sci_msg_resp_get_resource_range *resp;
+ struct ti_sci_msg_req_get_resource_range *req;
+ struct ti_sci_xfer *xfer;
+ struct ti_sci_info *info;
+ struct device *dev;
+ u16 type;
+ int ret = 0;
+
+ if (IS_ERR(handle))
+ return PTR_ERR(handle);
+ if (!handle)
+ return -EINVAL;
+
+ info = handle_to_ti_sci_info(handle);
+ dev = info->dev;
+
+ xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_RESOURCE_RANGE,
+ TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+ sizeof(*req), sizeof(*resp));
+ if (IS_ERR(xfer)) {
+ ret = PTR_ERR(xfer);
+ dev_err(dev, "Message alloc failed(%d)\n", ret);
+ return ret;
+ }
+
+ ret = ti_sci_get_resource_type(info, dev_id, &type);
+ if (ret) {
+ dev_err(dev, "rm type lookup failed for %u\n", dev_id);
+ goto fail;
+ }
+
+ req = (struct ti_sci_msg_req_get_resource_range *)xfer->xfer_buf;
+ req->secondary_host = s_host;
+ req->type = type & MSG_RM_RESOURCE_TYPE_MASK;
+ req->subtype = subtype & MSG_RM_RESOURCE_SUBTYPE_MASK;
+
+ ret = ti_sci_do_xfer(info, xfer);
+ if (ret) {
+ dev_err(dev, "Mbox send fail %d\n", ret);
+ goto fail;
+ }
+
+ resp = (struct ti_sci_msg_resp_get_resource_range *)xfer->xfer_buf;
+
+ if (!ti_sci_is_response_ack(resp)) {
+ ret = -ENODEV;
+ } else if (!resp->range_start && !resp->range_num) {
+ ret = -ENODEV;
+ } else {
+ *range_start = resp->range_start;
+ *range_num = resp->range_num;
+ };
+
+fail:
+ ti_sci_put_one_xfer(&info->minfo, xfer);
+
+ return ret;
+}
+
+/**
+ * ti_sci_cmd_get_resource_range - Get a range of resources assigned to host
+ * that is same as ti sci interface host.
+ * @handle: Pointer to TISCI handle.
+ * @dev_id: TISCI device ID.
+ * @subtype: Resource assignment subtype that is being requested
+ * from the given device.
+ * @range_start: Start index of the resource range
+ * @range_num: Number of resources in the range
+ *
+ * Return: 0 if all went fine, else return appropriate error.
+ */
+static int ti_sci_cmd_get_resource_range(const struct ti_sci_handle *handle,
+ u32 dev_id, u8 subtype,
+ u16 *range_start, u16 *range_num)
+{
+ return ti_sci_get_resource_range(handle, dev_id, subtype,
+ TI_SCI_IRQ_SECONDARY_HOST_INVALID,
+ range_start, range_num);
+}
+
+/**
+ * ti_sci_cmd_get_resource_range_from_shost - Get a range of resources
+ * assigned to a specified host.
+ * @handle: Pointer to TISCI handle.
+ * @dev_id: TISCI device ID.
+ * @subtype: Resource assignment subtype that is being requested
+ * from the given device.
+ * @s_host: Host processor ID to which the resources are allocated
+ * @range_start: Start index of the resource range
+ * @range_num: Number of resources in the range
+ *
+ * Return: 0 if all went fine, else return appropriate error.
+ */
+static
+int ti_sci_cmd_get_resource_range_from_shost(const struct ti_sci_handle *handle,
+ u32 dev_id, u8 subtype, u8 s_host,
+ u16 *range_start, u16 *range_num)
+{
+ return ti_sci_get_resource_range(handle, dev_id, subtype, s_host,
+ range_start, range_num);
+}
+
+/**
+ * ti_sci_manage_irq() - Helper api to configure/release the irq route between
+ * the requested source and destination
+ * @handle: Pointer to TISCI handle.
+ * @valid_params: Bit fields defining the validity of certain params
+ * @src_id: Device ID of the IRQ source
+ * @src_index: IRQ source index within the source device
+ * @dst_id: Device ID of the IRQ destination
+ * @dst_host_irq: IRQ number of the destination device
+ * @ia_id: Device ID of the IA, if the IRQ flows through this IA
+ * @vint: Virtual interrupt to be used within the IA
+ * @global_event: Global event number to be used for the requesting event
+ * @vint_status_bit: Virtual interrupt status bit to be used for the event
+ * @s_host: Secondary host ID to which the irq/event is being
+ * requested for.
+ * @type: Request type irq set or release.
+ *
+ * Return: 0 if all went fine, else return appropriate error.
+ */
+static int ti_sci_manage_irq(const struct ti_sci_handle *handle,
+ u32 valid_params, u16 src_id, u16 src_index,
+ u16 dst_id, u16 dst_host_irq, u16 ia_id, u16 vint,
+ u16 global_event, u8 vint_status_bit, u8 s_host,
+ u16 type)
+{
+ struct ti_sci_msg_req_manage_irq *req;
+ struct ti_sci_msg_hdr *resp;
+ struct ti_sci_xfer *xfer;
+ struct ti_sci_info *info;
+ struct device *dev;
+ int ret = 0;
+
+ if (IS_ERR(handle))
+ return PTR_ERR(handle);
+ if (!handle)
+ return -EINVAL;
+
+ info = handle_to_ti_sci_info(handle);
+ dev = info->dev;
+
+ xfer = ti_sci_get_one_xfer(info, type, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+ sizeof(*req), sizeof(*resp));
+ if (IS_ERR(xfer)) {
+ ret = PTR_ERR(xfer);
+ dev_err(dev, "Message alloc failed(%d)\n", ret);
+ return ret;
+ }
+ req = (struct ti_sci_msg_req_manage_irq *)xfer->xfer_buf;
+ req->valid_params = valid_params;
+ req->src_id = src_id;
+ req->src_index = src_index;
+ req->dst_id = dst_id;
+ req->dst_host_irq = dst_host_irq;
+ req->ia_id = ia_id;
+ req->vint = vint;
+ req->global_event = global_event;
+ req->vint_status_bit = vint_status_bit;
+ req->secondary_host = s_host;
+
+ ret = ti_sci_do_xfer(info, xfer);
+ if (ret) {
+ dev_err(dev, "Mbox send fail %d\n", ret);
+ goto fail;
+ }
+
+ resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
+
+ ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
+
+fail:
+ ti_sci_put_one_xfer(&info->minfo, xfer);
+
+ return ret;
+}
+
+/**
+ * ti_sci_set_irq() - Helper api to configure the irq route between the
+ * requested source and destination
+ * @handle: Pointer to TISCI handle.
+ * @valid_params: Bit fields defining the validity of certain params
+ * @src_id: Device ID of the IRQ source
+ * @src_index: IRQ source index within the source device
+ * @dst_id: Device ID of the IRQ destination
+ * @dst_host_irq: IRQ number of the destination device
+ * @ia_id: Device ID of the IA, if the IRQ flows through this IA
+ * @vint: Virtual interrupt to be used within the IA
+ * @global_event: Global event number to be used for the requesting event
+ * @vint_status_bit: Virtual interrupt status bit to be used for the event
+ * @s_host: Secondary host ID to which the irq/event is being
+ * requested for.
+ *
+ * Return: 0 if all went fine, else return appropriate error.
+ */
+static int ti_sci_set_irq(const struct ti_sci_handle *handle, u32 valid_params,
+ u16 src_id, u16 src_index, u16 dst_id,
+ u16 dst_host_irq, u16 ia_id, u16 vint,
+ u16 global_event, u8 vint_status_bit, u8 s_host)
+{
+ pr_debug("%s: IRQ set with valid_params = 0x%x from src = %d, index = %d, to dst = %d, irq = %d,via ia_id = %d, vint = %d, global event = %d,status_bit = %d\n",
+ __func__, valid_params, src_id, src_index,
+ dst_id, dst_host_irq, ia_id, vint, global_event,
+ vint_status_bit);
+
+ return ti_sci_manage_irq(handle, valid_params, src_id, src_index,
+ dst_id, dst_host_irq, ia_id, vint,
+ global_event, vint_status_bit, s_host,
+ TI_SCI_MSG_SET_IRQ);
+}
+
+/**
+ * ti_sci_free_irq() - Helper api to free the irq route between the
+ * requested source and destination
+ * @handle: Pointer to TISCI handle.
+ * @valid_params: Bit fields defining the validity of certain params
+ * @src_id: Device ID of the IRQ source
+ * @src_index: IRQ source index within the source device
+ * @dst_id: Device ID of the IRQ destination
+ * @dst_host_irq: IRQ number of the destination device
+ * @ia_id: Device ID of the IA, if the IRQ flows through this IA
+ * @vint: Virtual interrupt to be used within the IA
+ * @global_event: Global event number to be used for the requesting event
+ * @vint_status_bit: Virtual interrupt status bit to be used for the event
+ * @s_host: Secondary host ID to which the irq/event is being
+ * requested for.
+ *
+ * Return: 0 if all went fine, else return appropriate error.
+ */
+static int ti_sci_free_irq(const struct ti_sci_handle *handle, u32 valid_params,
+ u16 src_id, u16 src_index, u16 dst_id,
+ u16 dst_host_irq, u16 ia_id, u16 vint,
+ u16 global_event, u8 vint_status_bit, u8 s_host)
+{
+ pr_debug("%s: IRQ release with valid_params = 0x%x from src = %d, index = %d, to dst = %d, irq = %d,via ia_id = %d, vint = %d, global event = %d,status_bit = %d\n",
+ __func__, valid_params, src_id, src_index,
+ dst_id, dst_host_irq, ia_id, vint, global_event,
+ vint_status_bit);
+
+ return ti_sci_manage_irq(handle, valid_params, src_id, src_index,
+ dst_id, dst_host_irq, ia_id, vint,
+ global_event, vint_status_bit, s_host,
+ TI_SCI_MSG_FREE_IRQ);
+}
+
+/**
+ * ti_sci_cmd_set_irq() - Configure a host irq route between the requested
+ * source and destination.
+ * @handle: Pointer to TISCI handle.
+ * @src_id: Device ID of the IRQ source
+ * @src_index: IRQ source index within the source device
+ * @dst_id: Device ID of the IRQ destination
+ * @dst_host_irq: IRQ number of the destination device
+ * @vint_irq: Boolean specifying if this interrupt belongs to
+ * Interrupt Aggregator.
+ *
+ * Return: 0 if all went fine, else return appropriate error.
+ */
+static int ti_sci_cmd_set_irq(const struct ti_sci_handle *handle, u16 src_id,
+ u16 src_index, u16 dst_id, u16 dst_host_irq)
+{
+ u32 valid_params = MSG_FLAG_DST_ID_VALID | MSG_FLAG_DST_HOST_IRQ_VALID;
+
+ return ti_sci_set_irq(handle, valid_params, src_id, src_index, dst_id,
+ dst_host_irq, 0, 0, 0, 0, 0);
+}
+
+/**
+ * ti_sci_cmd_set_event_map() - Configure an event based irq route between the
+ * requested source and Interrupt Aggregator.
+ * @handle: Pointer to TISCI handle.
+ * @src_id: Device ID of the IRQ source
+ * @src_index: IRQ source index within the source device
+ * @ia_id: Device ID of the IA, if the IRQ flows through this IA
+ * @vint: Virtual interrupt to be used within the IA
+ * @global_event: Global event number to be used for the requesting event
+ * @vint_status_bit: Virtual interrupt status bit to be used for the event
+ *
+ * Return: 0 if all went fine, else return appropriate error.
+ */
+static int ti_sci_cmd_set_event_map(const struct ti_sci_handle *handle,
+ u16 src_id, u16 src_index, u16 ia_id,
+ u16 vint, u16 global_event,
+ u8 vint_status_bit)
+{
+ u32 valid_params = MSG_FLAG_IA_ID_VALID | MSG_FLAG_VINT_VALID |
+ MSG_FLAG_GLB_EVNT_VALID |
+ MSG_FLAG_VINT_STS_BIT_VALID;
+
+ return ti_sci_set_irq(handle, valid_params, src_id, src_index, 0, 0,
+ ia_id, vint, global_event, vint_status_bit, 0);
+}
+
+/**
+ * ti_sci_cmd_free_irq() - Free a host irq route between the between the
+ * requested source and destination.
+ * @handle: Pointer to TISCI handle.
+ * @src_id: Device ID of the IRQ source
+ * @src_index: IRQ source index within the source device
+ * @dst_id: Device ID of the IRQ destination
+ * @dst_host_irq: IRQ number of the destination device
+ * @vint_irq: Boolean specifying if this interrupt belongs to
+ * Interrupt Aggregator.
+ *
+ * Return: 0 if all went fine, else return appropriate error.
+ */
+static int ti_sci_cmd_free_irq(const struct ti_sci_handle *handle, u16 src_id,
+ u16 src_index, u16 dst_id, u16 dst_host_irq)
+{
+ u32 valid_params = MSG_FLAG_DST_ID_VALID | MSG_FLAG_DST_HOST_IRQ_VALID;
+
+ return ti_sci_free_irq(handle, valid_params, src_id, src_index, dst_id,
+ dst_host_irq, 0, 0, 0, 0, 0);
+}
+
+/**
+ * ti_sci_cmd_free_event_map() - Free an event map between the requested source
+ * and Interrupt Aggregator.
+ * @handle: Pointer to TISCI handle.
+ * @src_id: Device ID of the IRQ source
+ * @src_index: IRQ source index within the source device
+ * @ia_id: Device ID of the IA, if the IRQ flows through this IA
+ * @vint: Virtual interrupt to be used within the IA
+ * @global_event: Global event number to be used for the requesting event
+ * @vint_status_bit: Virtual interrupt status bit to be used for the event
+ *
+ * Return: 0 if all went fine, else return appropriate error.
+ */
+static int ti_sci_cmd_free_event_map(const struct ti_sci_handle *handle,
+ u16 src_id, u16 src_index, u16 ia_id,
+ u16 vint, u16 global_event,
+ u8 vint_status_bit)
+{
+ u32 valid_params = MSG_FLAG_IA_ID_VALID |
+ MSG_FLAG_VINT_VALID | MSG_FLAG_GLB_EVNT_VALID |
+ MSG_FLAG_VINT_STS_BIT_VALID;
+
+ return ti_sci_free_irq(handle, valid_params, src_id, src_index, 0, 0,
+ ia_id, vint, global_event, vint_status_bit, 0);
+}
+
/*
* ti_sci_setup_ops() - Setup the operations structures
* @info: pointer to TISCI pointer
@@ -1610,6 +2014,8 @@ static void ti_sci_setup_ops(struct ti_sci_info *info)
struct ti_sci_core_ops *core_ops = &ops->core_ops;
struct ti_sci_dev_ops *dops = &ops->dev_ops;
struct ti_sci_clk_ops *cops = &ops->clk_ops;
+ struct ti_sci_rm_core_ops *rm_core_ops = &ops->rm_core_ops;
+ struct ti_sci_rm_irq_ops *iops = &ops->rm_irq_ops;
core_ops->reboot_device = ti_sci_cmd_core_reboot;
@@ -1640,6 +2046,15 @@ static void ti_sci_setup_ops(struct ti_sci_info *info)
cops->get_best_match_freq = ti_sci_cmd_clk_get_match_freq;
cops->set_freq = ti_sci_cmd_clk_set_freq;
cops->get_freq = ti_sci_cmd_clk_get_freq;
+
+ rm_core_ops->get_range = ti_sci_cmd_get_resource_range;
+ rm_core_ops->get_range_from_shost =
+ ti_sci_cmd_get_resource_range_from_shost;
+
+ iops->set_irq = ti_sci_cmd_set_irq;
+ iops->set_event_map = ti_sci_cmd_set_event_map;
+ iops->free_irq = ti_sci_cmd_free_irq;
+ iops->free_event_map = ti_sci_cmd_free_event_map;
}
/**
@@ -1764,6 +2179,219 @@ const struct ti_sci_handle *devm_ti_sci_get_handle(struct device *dev)
}
EXPORT_SYMBOL_GPL(devm_ti_sci_get_handle);
+/**
+ * ti_sci_get_by_phandle() - Get the TI SCI handle using DT phandle
+ * @np: device node
+ * @property: property name containing phandle on TISCI node
+ *
+ * NOTE: The function does not track individual clients of the framework
+ * and is expected to be maintained by caller of TI SCI protocol library.
+ * ti_sci_put_handle must be balanced with successful ti_sci_get_by_phandle
+ * Return: pointer to handle if successful, else:
+ * -EPROBE_DEFER if the instance is not ready
+ * -ENODEV if the required node handler is missing
+ * -EINVAL if invalid conditions are encountered.
+ */
+const struct ti_sci_handle *ti_sci_get_by_phandle(struct device_node *np,
+ const char *property)
+{
+ struct ti_sci_handle *handle = NULL;
+ struct device_node *ti_sci_np;
+ struct ti_sci_info *info;
+ struct list_head *p;
+
+ if (!np) {
+ pr_err("I need a device pointer\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ ti_sci_np = of_parse_phandle(np, property, 0);
+ if (!ti_sci_np)
+ return ERR_PTR(-ENODEV);
+
+ mutex_lock(&ti_sci_list_mutex);
+ list_for_each(p, &ti_sci_list) {
+ info = list_entry(p, struct ti_sci_info, node);
+ if (ti_sci_np == info->dev->of_node) {
+ handle = &info->handle;
+ info->users++;
+ break;
+ }
+ }
+ mutex_unlock(&ti_sci_list_mutex);
+ of_node_put(ti_sci_np);
+
+ if (!handle)
+ return ERR_PTR(-EPROBE_DEFER);
+
+ return handle;
+}
+EXPORT_SYMBOL_GPL(ti_sci_get_by_phandle);
+
+/**
+ * devm_ti_sci_get_by_phandle() - Managed get handle using phandle
+ * @dev: Device pointer requesting TISCI handle
+ * @property: property name containing phandle on TISCI node
+ *
+ * NOTE: This releases the handle once the device resources are
+ * no longer needed. MUST NOT BE released with ti_sci_put_handle.
+ * The function does not track individual clients of the framework
+ * and is expected to be maintained by caller of TI SCI protocol library.
+ *
+ * Return: 0 if all went fine, else corresponding error.
+ */
+const struct ti_sci_handle *devm_ti_sci_get_by_phandle(struct device *dev,
+ const char *property)
+{
+ const struct ti_sci_handle *handle;
+ const struct ti_sci_handle **ptr;
+
+ ptr = devres_alloc(devm_ti_sci_release, sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return ERR_PTR(-ENOMEM);
+ handle = ti_sci_get_by_phandle(dev_of_node(dev), property);
+
+ if (!IS_ERR(handle)) {
+ *ptr = handle;
+ devres_add(dev, ptr);
+ } else {
+ devres_free(ptr);
+ }
+
+ return handle;
+}
+EXPORT_SYMBOL_GPL(devm_ti_sci_get_by_phandle);
+
+/**
+ * ti_sci_get_free_resource() - Get a free resource from TISCI resource.
+ * @res: Pointer to the TISCI resource
+ *
+ * Return: resource num if all went ok else TI_SCI_RESOURCE_NULL.
+ */
+u16 ti_sci_get_free_resource(struct ti_sci_resource *res)
+{
+ unsigned long flags;
+ u16 set, free_bit;
+
+ raw_spin_lock_irqsave(&res->lock, flags);
+ for (set = 0; set < res->sets; set++) {
+ free_bit = find_first_zero_bit(res->desc[set].res_map,
+ res->desc[set].num);
+ if (free_bit != res->desc[set].num) {
+ set_bit(free_bit, res->desc[set].res_map);
+ raw_spin_unlock_irqrestore(&res->lock, flags);
+ return res->desc[set].start + free_bit;
+ }
+ }
+ raw_spin_unlock_irqrestore(&res->lock, flags);
+
+ return TI_SCI_RESOURCE_NULL;
+}
+EXPORT_SYMBOL_GPL(ti_sci_get_free_resource);
+
+/**
+ * ti_sci_release_resource() - Release a resource from TISCI resource.
+ * @res: Pointer to the TISCI resource
+ * @id: Resource id to be released.
+ */
+void ti_sci_release_resource(struct ti_sci_resource *res, u16 id)
+{
+ unsigned long flags;
+ u16 set;
+
+ raw_spin_lock_irqsave(&res->lock, flags);
+ for (set = 0; set < res->sets; set++) {
+ if (res->desc[set].start <= id &&
+ (res->desc[set].num + res->desc[set].start) > id)
+ clear_bit(id - res->desc[set].start,
+ res->desc[set].res_map);
+ }
+ raw_spin_unlock_irqrestore(&res->lock, flags);
+}
+EXPORT_SYMBOL_GPL(ti_sci_release_resource);
+
+/**
+ * ti_sci_get_num_resources() - Get the number of resources in TISCI resource
+ * @res: Pointer to the TISCI resource
+ *
+ * Return: Total number of available resources.
+ */
+u32 ti_sci_get_num_resources(struct ti_sci_resource *res)
+{
+ u32 set, count = 0;
+
+ for (set = 0; set < res->sets; set++)
+ count += res->desc[set].num;
+
+ return count;
+}
+EXPORT_SYMBOL_GPL(ti_sci_get_num_resources);
+
+/**
+ * devm_ti_sci_get_of_resource() - Get a TISCI resource assigned to a device
+ * @handle: TISCI handle
+ * @dev: Device pointer to which the resource is assigned
+ * @dev_id: TISCI device id to which the resource is assigned
+ * @of_prop: property name by which the resource are represented
+ *
+ * Return: Pointer to ti_sci_resource if all went well else appropriate
+ * error pointer.
+ */
+struct ti_sci_resource *
+devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle,
+ struct device *dev, u32 dev_id, char *of_prop)
+{
+ struct ti_sci_resource *res;
+ u32 resource_subtype;
+ int i, ret;
+
+ res = devm_kzalloc(dev, sizeof(*res), GFP_KERNEL);
+ if (!res)
+ return ERR_PTR(-ENOMEM);
+
+ res->sets = of_property_count_elems_of_size(dev_of_node(dev), of_prop,
+ sizeof(u32));
+ if (res->sets < 0) {
+ dev_err(dev, "%s resource type ids not available\n", of_prop);
+ return ERR_PTR(res->sets);
+ }
+
+ res->desc = devm_kcalloc(dev, res->sets, sizeof(*res->desc),
+ GFP_KERNEL);
+ if (!res->desc)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < res->sets; i++) {
+ ret = of_property_read_u32_index(dev_of_node(dev), of_prop, i,
+ &resource_subtype);
+ if (ret)
+ return ERR_PTR(-EINVAL);
+
+ ret = handle->ops.rm_core_ops.get_range(handle, dev_id,
+ resource_subtype,
+ &res->desc[i].start,
+ &res->desc[i].num);
+ if (ret) {
+ dev_err(dev, "dev = %d subtype %d not allocated for this host\n",
+ dev_id, resource_subtype);
+ return ERR_PTR(ret);
+ }
+
+ dev_dbg(dev, "dev = %d, subtype = %d, start = %d, num = %d\n",
+ dev_id, resource_subtype, res->desc[i].start,
+ res->desc[i].num);
+
+ res->desc[i].res_map =
+ devm_kzalloc(dev, BITS_TO_LONGS(res->desc[i].num) *
+ sizeof(*res->desc[i].res_map), GFP_KERNEL);
+ if (!res->desc[i].res_map)
+ return ERR_PTR(-ENOMEM);
+ }
+ raw_spin_lock_init(&res->lock);
+
+ return res;
+}
+
static int tisci_reboot_handler(struct notifier_block *nb, unsigned long mode,
void *cmd)
{
@@ -1784,10 +2412,33 @@ static const struct ti_sci_desc ti_sci_pmmc_k2g_desc = {
/* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */
.max_msgs = 20,
.max_msg_size = 64,
+ .rm_type_map = NULL,
+};
+
+static struct ti_sci_rm_type_map ti_sci_am654_rm_type_map[] = {
+ {.dev_id = 56, .type = 0x00b}, /* GIC_IRQ */
+ {.dev_id = 179, .type = 0x000}, /* MAIN_NAV_UDMASS_IA0 */
+ {.dev_id = 187, .type = 0x009}, /* MAIN_NAV_RA */
+ {.dev_id = 188, .type = 0x006}, /* MAIN_NAV_UDMAP */
+ {.dev_id = 194, .type = 0x007}, /* MCU_NAV_UDMAP */
+ {.dev_id = 195, .type = 0x00a}, /* MCU_NAV_RA */
+ {.dev_id = 0, .type = 0x000}, /* end of table */
+};
+
+/* Description for AM654 */
+static const struct ti_sci_desc ti_sci_pmmc_am654_desc = {
+ .default_host_id = 12,
+ /* Conservative duration */
+ .max_rx_timeout_ms = 10000,
+ /* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */
+ .max_msgs = 20,
+ .max_msg_size = 60,
+ .rm_type_map = ti_sci_am654_rm_type_map,
};
static const struct of_device_id ti_sci_of_match[] = {
{.compatible = "ti,k2g-sci", .data = &ti_sci_pmmc_k2g_desc},
+ {.compatible = "ti,am654-sci", .data = &ti_sci_pmmc_am654_desc},
{ /* Sentinel */ },
};
MODULE_DEVICE_TABLE(of, ti_sci_of_match);
diff --git a/drivers/firmware/ti_sci.h b/drivers/firmware/ti_sci.h
index 12bf316b68df..4983827151bf 100644
--- a/drivers/firmware/ti_sci.h
+++ b/drivers/firmware/ti_sci.h
@@ -35,6 +35,13 @@
#define TI_SCI_MSG_QUERY_CLOCK_FREQ 0x010d
#define TI_SCI_MSG_GET_CLOCK_FREQ 0x010e
+/* Resource Management Requests */
+#define TI_SCI_MSG_GET_RESOURCE_RANGE 0x1500
+
+/* IRQ requests */
+#define TI_SCI_MSG_SET_IRQ 0x1000
+#define TI_SCI_MSG_FREE_IRQ 0x1001
+
/**
* struct ti_sci_msg_hdr - Generic Message Header for All messages and responses
* @type: Type of messages: One of TI_SCI_MSG* values
@@ -461,4 +468,99 @@ struct ti_sci_msg_resp_get_clock_freq {
u64 freq_hz;
} __packed;
+#define TI_SCI_IRQ_SECONDARY_HOST_INVALID 0xff
+
+/**
+ * struct ti_sci_msg_req_get_resource_range - Request to get a host's assigned
+ * range of resources.
+ * @hdr: Generic Header
+ * @type: Unique resource assignment type
+ * @subtype: Resource assignment subtype within the resource type.
+ * @secondary_host: Host processing entity to which the resources are
+ * allocated. This is required only when the destination
+ * host id id different from ti sci interface host id,
+ * else TI_SCI_IRQ_SECONDARY_HOST_INVALID can be passed.
+ *
+ * Request type is TI_SCI_MSG_GET_RESOURCE_RANGE. Responded with requested
+ * resource range which is of type TI_SCI_MSG_GET_RESOURCE_RANGE.
+ */
+struct ti_sci_msg_req_get_resource_range {
+ struct ti_sci_msg_hdr hdr;
+#define MSG_RM_RESOURCE_TYPE_MASK GENMASK(9, 0)
+#define MSG_RM_RESOURCE_SUBTYPE_MASK GENMASK(5, 0)
+ u16 type;
+ u8 subtype;
+ u8 secondary_host;
+} __packed;
+
+/**
+ * struct ti_sci_msg_resp_get_resource_range - Response to resource get range.
+ * @hdr: Generic Header
+ * @range_start: Start index of the resource range.
+ * @range_num: Number of resources in the range.
+ *
+ * Response to request TI_SCI_MSG_GET_RESOURCE_RANGE.
+ */
+struct ti_sci_msg_resp_get_resource_range {
+ struct ti_sci_msg_hdr hdr;
+ u16 range_start;
+ u16 range_num;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_manage_irq - Request to configure/release the route
+ * between the dev and the host.
+ * @hdr: Generic Header
+ * @valid_params: Bit fields defining the validity of interrupt source
+ * parameters. If a bit is not set, then corresponding
+ * field is not valid and will not be used for route set.
+ * Bit field definitions:
+ * 0 - Valid bit for @dst_id
+ * 1 - Valid bit for @dst_host_irq
+ * 2 - Valid bit for @ia_id
+ * 3 - Valid bit for @vint
+ * 4 - Valid bit for @global_event
+ * 5 - Valid bit for @vint_status_bit_index
+ * 31 - Valid bit for @secondary_host
+ * @src_id: IRQ source peripheral ID.
+ * @src_index: IRQ source index within the peripheral
+ * @dst_id: IRQ Destination ID. Based on the architecture it can be
+ * IRQ controller or host processor ID.
+ * @dst_host_irq: IRQ number of the destination host IRQ controller
+ * @ia_id: Device ID of the interrupt aggregator in which the
+ * vint resides.
+ * @vint: Virtual interrupt number if the interrupt route
+ * is through an interrupt aggregator.
+ * @global_event: Global event that is to be mapped to interrupt
+ * aggregator virtual interrupt status bit.
+ * @vint_status_bit: Virtual interrupt status bit if the interrupt route
+ * utilizes an interrupt aggregator status bit.
+ * @secondary_host: Host ID of the IRQ destination computing entity. This is
+ * required only when destination host id is different
+ * from ti sci interface host id.
+ *
+ * Request type is TI_SCI_MSG_SET/RELEASE_IRQ.
+ * Response is generic ACK / NACK message.
+ */
+struct ti_sci_msg_req_manage_irq {
+ struct ti_sci_msg_hdr hdr;
+#define MSG_FLAG_DST_ID_VALID TI_SCI_MSG_FLAG(0)
+#define MSG_FLAG_DST_HOST_IRQ_VALID TI_SCI_MSG_FLAG(1)
+#define MSG_FLAG_IA_ID_VALID TI_SCI_MSG_FLAG(2)
+#define MSG_FLAG_VINT_VALID TI_SCI_MSG_FLAG(3)
+#define MSG_FLAG_GLB_EVNT_VALID TI_SCI_MSG_FLAG(4)
+#define MSG_FLAG_VINT_STS_BIT_VALID TI_SCI_MSG_FLAG(5)
+#define MSG_FLAG_SHOST_VALID TI_SCI_MSG_FLAG(31)
+ u32 valid_params;
+ u16 src_id;
+ u16 src_index;
+ u16 dst_id;
+ u16 dst_host_irq;
+ u16 ia_id;
+ u16 vint;
+ u16 global_event;
+ u8 vint_status_bit;
+ u8 secondary_host;
+} __packed;
+
#endif /* __TI_SCI_H */
diff --git a/drivers/firmware/trusted_foundations.c b/drivers/firmware/trusted_foundations.c
index fd4999388ff1..fc544e19b0a1 100644
--- a/drivers/firmware/trusted_foundations.c
+++ b/drivers/firmware/trusted_foundations.c
@@ -1,17 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Trusted Foundations support for ARM CPUs
*
* Copyright (c) 2013, NVIDIA Corporation.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#include <linux/kernel.h>