diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst
index cfe6cccf0f44898f70a45d21eff6bbc41b267760..687efcf245c13d34196044e2500354224f0fa538 100644
--- a/Documentation/userspace-api/ioctl/ioctl-number.rst
+++ b/Documentation/userspace-api/ioctl/ioctl-number.rst
@@ -367,6 +367,7 @@ Code Seq# Include File Comments
<mailto:aherrman@de.ibm.com>
0xE5 00-3F linux/fuse.h
0xEC 00-01 drivers/platform/chrome/cros_ec_dev.h ChromeOS EC driver
+0xEE 00-09 uapi/linux/pfrut.h Platform Firmware Runtime Update and Telemetry
0xF3 00-3F drivers/usb/misc/sisusbvga/sisusb.h sisfb (in development)
<mailto:thomas@winischhofer.net>
0xF6 all LTTng Linux Trace Toolkit Next Generation
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 60b5424bd318bb44fc848cfad8dd5281ad1aa2b3..8cdc7860b6e6cf4981c214122ae046500c461fc8 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -517,6 +517,28 @@ config ACPI_CONFIGFS
userspace. The configurable ACPI groups will be visible under
/config/acpi, assuming configfs is mounted under /config.
+config ACPI_PFRUT
+ tristate "ACPI Platform Firmware Runtime Update and Telemetry"
+ depends on 64BIT
+ help
+ This mechanism allows certain pieces of the platform firmware
+ to be updated on the fly while the system is running (runtime)
+ without the need to restart it, which is key in the cases when
+ the system needs to be available 100% of the time and it cannot
+ afford the downtime related to restarting it, or when the work
+ carried out by the system is particularly important, so it cannot
+ be interrupted, and it is not practical to wait until it is complete.
+
+ The existing firmware code can be modified (driver update) or
+ extended by adding new code to the firmware (code injection).
+
+ Besides, the telemetry driver allows user space to fetch telemetry
+ data from the firmware with the help of the Platform Firmware Runtime
+ Telemetry interface.
+
+ To compile the drivers as modules, choose M here:
+ the modules will be called pfr_update and pfr_telemetry.
+
if ARM64
source "drivers/acpi/arm64/Kconfig"
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 08c2d985c57cc5af62857882806532c79d3fb7f2..f47032769f69c7963984639d974079347973e898 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -103,6 +103,7 @@ obj-$(CONFIG_ACPI_CPPC_LIB) += cppc_acpi.o
obj-$(CONFIG_ACPI_SPCR_TABLE) += spcr.o
obj-$(CONFIG_ACPI_DEBUGGER_USER) += acpi_dbg.o
obj-$(CONFIG_ACPI_PPTT) += pptt.o
+obj-$(CONFIG_ACPI_PFRUT) += pfr_update.o pfr_telemetry.o
# processor has its own "processor." module_param namespace
processor-y := processor_driver.o
diff --git a/drivers/acpi/pfr_telemetry.c b/drivers/acpi/pfr_telemetry.c
new file mode 100644
index 0000000000000000000000000000000000000000..9abf350bd7a5a28cc63d8960c395b02a0482b240
--- /dev/null
+++ b/drivers/acpi/pfr_telemetry.c
@@ -0,0 +1,435 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ACPI Platform Firmware Runtime Telemetry driver
+ *
+ * Copyright (C) 2021 Intel Corporation
+ * Author: Chen Yu <yu.c.chen@intel.com>
+ *
+ * This driver allows user space to fetch telemetry data from the
+ * firmware with the help of the Platform Firmware Runtime Telemetry
+ * interface.
+ */
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/platform_device.h>
+#include <linux/string.h>
+#include <linux/uaccess.h>
+#include <linux/uio.h>
+#include <linux/uuid.h>
+
+#include <uapi/linux/pfrut.h>
+
+#define PFRT_LOG_EXEC_IDX 0
+#define PFRT_LOG_HISTORY_IDX 1
+
+#define PFRT_LOG_ERR 0
+#define PFRT_LOG_WARN 1
+#define PFRT_LOG_INFO 2
+#define PFRT_LOG_VERB 4
+
+#define PFRT_FUNC_SET_LEV 1
+#define PFRT_FUNC_GET_LEV 2
+#define PFRT_FUNC_GET_DATA 3
+
+#define PFRT_REVID_1 1
+#define PFRT_REVID_2 2
+#define PFRT_DEFAULT_REV_ID PFRT_REVID_1
+
+enum log_index {
+ LOG_STATUS_IDX = 0,
+ LOG_EXT_STATUS_IDX = 1,
+ LOG_MAX_SZ_IDX = 2,
+ LOG_CHUNK1_LO_IDX = 3,
+ LOG_CHUNK1_HI_IDX = 4,
+ LOG_CHUNK1_SZ_IDX = 5,
+ LOG_CHUNK2_LO_IDX = 6,
+ LOG_CHUNK2_HI_IDX = 7,
+ LOG_CHUNK2_SZ_IDX = 8,
+ LOG_ROLLOVER_CNT_IDX = 9,
+ LOG_RESET_CNT_IDX = 10,
+ LOG_NR_IDX
+};
+
+struct pfrt_log_device {
+ int index;
+ struct pfrt_log_info info;
+ struct device *parent_dev;
+ struct miscdevice miscdev;
+};
+
+/* pfrt_guid is the parameter for _DSM method */
+static const guid_t pfrt_log_guid =
+ GUID_INIT(0x75191659, 0x8178, 0x4D9D, 0xB8, 0x8F, 0xAC, 0x5E,
+ 0x5E, 0x93, 0xE8, 0xBF);
+
+static DEFINE_IDA(pfrt_log_ida);
+
+static inline struct pfrt_log_device *to_pfrt_log_dev(struct file *file)
+{
+ return container_of(file->private_data, struct pfrt_log_device, miscdev);
+}
+
+static int get_pfrt_log_data_info(struct pfrt_log_data_info *data_info,
+ struct pfrt_log_device *pfrt_log_dev)
+{
+ acpi_handle handle = ACPI_HANDLE(pfrt_log_dev->parent_dev);
+ union acpi_object *out_obj, in_obj, in_buf;
+ int ret = -EBUSY;
+
+ memset(data_info, 0, sizeof(*data_info));
+ memset(&in_obj, 0, sizeof(in_obj));
+ memset(&in_buf, 0, sizeof(in_buf));
+ in_obj.type = ACPI_TYPE_PACKAGE;
+ in_obj.package.count = 1;
+ in_obj.package.elements = &in_buf;
+ in_buf.type = ACPI_TYPE_INTEGER;
+ in_buf.integer.value = pfrt_log_dev->info.log_type;
+
+ out_obj = acpi_evaluate_dsm_typed(handle, &pfrt_log_guid,
+ pfrt_log_dev->info.log_revid, PFRT_FUNC_GET_DATA,
+ &in_obj, ACPI_TYPE_PACKAGE);
+ if (!out_obj)
+ return -EINVAL;
+
+ if (out_obj->package.count < LOG_NR_IDX ||
+ out_obj->package.elements[LOG_STATUS_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[LOG_EXT_STATUS_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[LOG_MAX_SZ_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[LOG_CHUNK1_LO_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[LOG_CHUNK1_HI_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[LOG_CHUNK1_SZ_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[LOG_CHUNK2_LO_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[LOG_CHUNK2_HI_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[LOG_CHUNK2_SZ_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[LOG_ROLLOVER_CNT_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[LOG_RESET_CNT_IDX].type != ACPI_TYPE_INTEGER)
+ goto free_acpi_buffer;
+
+ data_info->status = out_obj->package.elements[LOG_STATUS_IDX].integer.value;
+ data_info->ext_status =
+ out_obj->package.elements[LOG_EXT_STATUS_IDX].integer.value;
+ if (data_info->status != DSM_SUCCEED) {
+ dev_dbg(pfrt_log_dev->parent_dev, "Error Status:%d\n", data_info->status);
+ dev_dbg(pfrt_log_dev->parent_dev, "Error Extend Status:%d\n",
+ data_info->ext_status);
+ goto free_acpi_buffer;
+ }
+
+ data_info->max_data_size =
+ out_obj->package.elements[LOG_MAX_SZ_IDX].integer.value;
+ data_info->chunk1_addr_lo =
+ out_obj->package.elements[LOG_CHUNK1_LO_IDX].integer.value;
+ data_info->chunk1_addr_hi =
+ out_obj->package.elements[LOG_CHUNK1_HI_IDX].integer.value;
+ data_info->chunk1_size =
+ out_obj->package.elements[LOG_CHUNK1_SZ_IDX].integer.value;
+ data_info->chunk2_addr_lo =
+ out_obj->package.elements[LOG_CHUNK2_LO_IDX].integer.value;
+ data_info->chunk2_addr_hi =
+ out_obj->package.elements[LOG_CHUNK2_HI_IDX].integer.value;
+ data_info->chunk2_size =
+ out_obj->package.elements[LOG_CHUNK2_SZ_IDX].integer.value;
+ data_info->rollover_cnt =
+ out_obj->package.elements[LOG_ROLLOVER_CNT_IDX].integer.value;
+ data_info->reset_cnt =
+ out_obj->package.elements[LOG_RESET_CNT_IDX].integer.value;
+
+ ret = 0;
+
+free_acpi_buffer:
+ kfree(out_obj);
+
+ return ret;
+}
+
+static int set_pfrt_log_level(int level, struct pfrt_log_device *pfrt_log_dev)
+{
+ acpi_handle handle = ACPI_HANDLE(pfrt_log_dev->parent_dev);
+ union acpi_object *out_obj, *obj, in_obj, in_buf;
+ enum pfru_dsm_status status, ext_status;
+ int ret = 0;
+
+ memset(&in_obj, 0, sizeof(in_obj));
+ memset(&in_buf, 0, sizeof(in_buf));
+ in_obj.type = ACPI_TYPE_PACKAGE;
+ in_obj.package.count = 1;
+ in_obj.package.elements = &in_buf;
+ in_buf.type = ACPI_TYPE_INTEGER;
+ in_buf.integer.value = level;
+
+ out_obj = acpi_evaluate_dsm_typed(handle, &pfrt_log_guid,
+ pfrt_log_dev->info.log_revid, PFRT_FUNC_SET_LEV,
+ &in_obj, ACPI_TYPE_PACKAGE);
+ if (!out_obj)
+ return -EINVAL;
+
+ obj = &out_obj->package.elements[0];
+ status = obj->integer.value;
+ if (status != DSM_SUCCEED) {
+ obj = &out_obj->package.elements[1];
+ ext_status = obj->integer.value;
+ dev_dbg(pfrt_log_dev->parent_dev, "Error Status:%d\n", status);
+ dev_dbg(pfrt_log_dev->parent_dev, "Error Extend Status:%d\n", ext_status);
+ ret = -EBUSY;
+ }
+
+ kfree(out_obj);
+
+ return ret;
+}
+
+static int get_pfrt_log_level(struct pfrt_log_device *pfrt_log_dev)
+{
+ acpi_handle handle = ACPI_HANDLE(pfrt_log_dev->parent_dev);
+ union acpi_object *out_obj, *obj;
+ enum pfru_dsm_status status, ext_status;
+ int ret = -EBUSY;
+
+ out_obj = acpi_evaluate_dsm_typed(handle, &pfrt_log_guid,
+ pfrt_log_dev->info.log_revid, PFRT_FUNC_GET_LEV,
+ NULL, ACPI_TYPE_PACKAGE);
+ if (!out_obj)
+ return -EINVAL;
+
+ obj = &out_obj->package.elements[0];
+ if (obj->type != ACPI_TYPE_INTEGER)
+ goto free_acpi_buffer;
+
+ status = obj->integer.value;
+ if (status != DSM_SUCCEED) {
+ obj = &out_obj->package.elements[1];
+ ext_status = obj->integer.value;
+ dev_dbg(pfrt_log_dev->parent_dev, "Error Status:%d\n", status);
+ dev_dbg(pfrt_log_dev->parent_dev, "Error Extend Status:%d\n", ext_status);
+ goto free_acpi_buffer;
+ }
+
+ obj = &out_obj->package.elements[2];
+ if (obj->type != ACPI_TYPE_INTEGER)
+ goto free_acpi_buffer;
+
+ ret = obj->integer.value;
+
+free_acpi_buffer:
+ kfree(out_obj);
+
+ return ret;
+}
+
+static int valid_log_level(u32 level)
+{
+ return level == PFRT_LOG_ERR || level == PFRT_LOG_WARN ||
+ level == PFRT_LOG_INFO || level == PFRT_LOG_VERB;
+}
+
+static int valid_log_type(u32 type)
+{
+ return type == PFRT_LOG_EXEC_IDX || type == PFRT_LOG_HISTORY_IDX;
+}
+
+static inline int valid_log_revid(u32 id)
+{
+ return id == PFRT_REVID_1 || id == PFRT_REVID_2;
+}
+
+static long pfrt_log_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct pfrt_log_device *pfrt_log_dev = to_pfrt_log_dev(file);
+ struct pfrt_log_data_info data_info;
+ struct pfrt_log_info info;
+ void __user *p;
+ int ret = 0;
+
+ p = (void __user *)arg;
+
+ switch (cmd) {
+ case PFRT_LOG_IOC_SET_INFO:
+ if (copy_from_user(&info, p, sizeof(info)))
+ return -EFAULT;
+
+ if (valid_log_revid(info.log_revid))
+ pfrt_log_dev->info.log_revid = info.log_revid;
+
+ if (valid_log_level(info.log_level)) {
+ ret = set_pfrt_log_level(info.log_level, pfrt_log_dev);
+ if (ret < 0)
+ return ret;
+
+ pfrt_log_dev->info.log_level = info.log_level;
+ }
+
+ if (valid_log_type(info.log_type))
+ pfrt_log_dev->info.log_type = info.log_type;
+
+ return 0;
+
+ case PFRT_LOG_IOC_GET_INFO:
+ info.log_level = get_pfrt_log_level(pfrt_log_dev);
+ if (ret < 0)
+ return ret;
+
+ info.log_type = pfrt_log_dev->info.log_type;
+ info.log_revid = pfrt_log_dev->info.log_revid;
+ if (copy_to_user(p, &info, sizeof(info)))
+ return -EFAULT;
+
+ return 0;
+
+ case PFRT_LOG_IOC_GET_DATA_INFO:
+ ret = get_pfrt_log_data_info(&data_info, pfrt_log_dev);
+ if (ret)
+ return ret;
+
+ if (copy_to_user(p, &data_info, sizeof(struct pfrt_log_data_info)))
+ return -EFAULT;
+
+ return 0;
+
+ default:
+ return -ENOTTY;
+ }
+}
+
+static int
+pfrt_log_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct pfrt_log_device *pfrt_log_dev;
+ struct pfrt_log_data_info info;
+ unsigned long psize, vsize;
+ phys_addr_t base_addr;
+ int ret;
+
+ if (vma->vm_flags & VM_WRITE)
+ return -EROFS;
+
+ /* changing from read to write with mprotect is not allowed */
+ vma->vm_flags &= ~VM_MAYWRITE;
+
+ pfrt_log_dev = to_pfrt_log_dev(file);
+
+ ret = get_pfrt_log_data_info(&info, pfrt_log_dev);
+ if (ret)
+ return ret;
+
+ base_addr = (phys_addr_t)((info.chunk2_addr_hi << 32) | info.chunk2_addr_lo);
+ /* pfrt update has not been launched yet */
+ if (!base_addr)
+ return -ENODEV;
+
+ psize = info.max_data_size;
+ /* base address and total buffer size must be page aligned */
+ if (!PAGE_ALIGNED(base_addr) || !PAGE_ALIGNED(psize))
+ return -ENODEV;
+
+ vsize = vma->vm_end - vma->vm_start;
+ if (vsize > psize)
+ return -EINVAL;
+
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ if (io_remap_pfn_range(vma, vma->vm_start, PFN_DOWN(base_addr),
+ vsize, vma->vm_page_prot))
+ return -EAGAIN;
+
+ return 0;
+}
+
+static const struct file_operations acpi_pfrt_log_fops = {
+ .owner = THIS_MODULE,
+ .mmap = pfrt_log_mmap,
+ .unlocked_ioctl = pfrt_log_ioctl,
+ .llseek = noop_llseek,
+};
+
+static int acpi_pfrt_log_remove(struct platform_device *pdev)
+{
+ struct pfrt_log_device *pfrt_log_dev = platform_get_drvdata(pdev);
+
+ misc_deregister(&pfrt_log_dev->miscdev);
+
+ return 0;
+}
+
+static void pfrt_log_put_idx(void *data)
+{
+ struct pfrt_log_device *pfrt_log_dev = data;
+
+ ida_free(&pfrt_log_ida, pfrt_log_dev->index);
+}
+
+static int acpi_pfrt_log_probe(struct platform_device *pdev)
+{
+ acpi_handle handle = ACPI_HANDLE(&pdev->dev);
+ struct pfrt_log_device *pfrt_log_dev;
+ int ret;
+
+ if (!acpi_has_method(handle, "_DSM")) {
+ dev_dbg(&pdev->dev, "Missing _DSM\n");
+ return -ENODEV;
+ }
+
+ pfrt_log_dev = devm_kzalloc(&pdev->dev, sizeof(*pfrt_log_dev), GFP_KERNEL);
+ if (!pfrt_log_dev)
+ return -ENOMEM;
+
+ ret = ida_alloc(&pfrt_log_ida, GFP_KERNEL);
+ if (ret < 0)
+ return ret;
+
+ pfrt_log_dev->index = ret;
+ ret = devm_add_action_or_reset(&pdev->dev, pfrt_log_put_idx, pfrt_log_dev);
+ if (ret)
+ return ret;
+
+ pfrt_log_dev->info.log_revid = PFRT_DEFAULT_REV_ID;
+ pfrt_log_dev->parent_dev = &pdev->dev;
+
+ pfrt_log_dev->miscdev.minor = MISC_DYNAMIC_MINOR;
+ pfrt_log_dev->miscdev.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
+ "pfrt%d",
+ pfrt_log_dev->index);
+ if (!pfrt_log_dev->miscdev.name)
+ return -ENOMEM;
+
+ pfrt_log_dev->miscdev.nodename = devm_kasprintf(&pdev->dev, GFP_KERNEL,
+ "acpi_pfr_telemetry%d",
+ pfrt_log_dev->index);
+ if (!pfrt_log_dev->miscdev.nodename)
+ return -ENOMEM;
+
+ pfrt_log_dev->miscdev.fops = &acpi_pfrt_log_fops;
+ pfrt_log_dev->miscdev.parent = &pdev->dev;
+
+ ret = misc_register(&pfrt_log_dev->miscdev);
+ if (ret)
+ return ret;
+
+ platform_set_drvdata(pdev, pfrt_log_dev);
+
+ return 0;
+}
+
+static const struct acpi_device_id acpi_pfrt_log_ids[] = {
+ {"INTC1081"},
+ {}
+};
+MODULE_DEVICE_TABLE(acpi, acpi_pfrt_log_ids);
+
+static struct platform_driver acpi_pfrt_log_driver = {
+ .driver = {
+ .name = "pfr_telemetry",
+ .acpi_match_table = acpi_pfrt_log_ids,
+ },
+ .probe = acpi_pfrt_log_probe,
+ .remove = acpi_pfrt_log_remove,
+};
+module_platform_driver(acpi_pfrt_log_driver);
+
+MODULE_DESCRIPTION("Platform Firmware Runtime Update Telemetry driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/acpi/pfr_update.c b/drivers/acpi/pfr_update.c
new file mode 100644
index 0000000000000000000000000000000000000000..6bb0b778b5da527025772478e0f6d3113bac2607
--- /dev/null
+++ b/drivers/acpi/pfr_update.c
@@ -0,0 +1,575 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ACPI Platform Firmware Runtime Update Device driver
+ *
+ * Copyright (C) 2021 Intel Corporation
+ * Author: Chen Yu <yu.c.chen@intel.com>
+ *
+ * pfr_update driver is used for Platform Firmware Runtime
+ * Update, which includes the code injection and driver update.
+ */
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/efi.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/idr.h>
+#include <linux/miscdevice.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/string.h>
+#include <linux/uaccess.h>
+#include <linux/uio.h>
+#include <linux/uuid.h>
+
+#include <uapi/linux/pfrut.h>
+
+#define PFRU_FUNC_STANDARD_QUERY 0
+#define PFRU_FUNC_QUERY_UPDATE_CAP 1
+#define PFRU_FUNC_QUERY_BUF 2
+#define PFRU_FUNC_START 3
+
+#define PFRU_CODE_INJECT_TYPE 1
+#define PFRU_DRIVER_UPDATE_TYPE 2
+
+#define PFRU_REVID_1 1
+#define PFRU_REVID_2 2
+#define PFRU_DEFAULT_REV_ID PFRU_REVID_1
+
+enum cap_index {
+ CAP_STATUS_IDX = 0,
+ CAP_UPDATE_IDX = 1,
+ CAP_CODE_TYPE_IDX = 2,
+ CAP_FW_VER_IDX = 3,
+ CAP_CODE_RT_VER_IDX = 4,
+ CAP_DRV_TYPE_IDX = 5,
+ CAP_DRV_RT_VER_IDX = 6,
+ CAP_DRV_SVN_IDX = 7,
+ CAP_PLAT_ID_IDX = 8,
+ CAP_OEM_ID_IDX = 9,
+ CAP_OEM_INFO_IDX = 10,
+ CAP_NR_IDX
+};
+
+enum buf_index {
+ BUF_STATUS_IDX = 0,
+ BUF_EXT_STATUS_IDX = 1,
+ BUF_ADDR_LOW_IDX = 2,
+ BUF_ADDR_HI_IDX = 3,
+ BUF_SIZE_IDX = 4,
+ BUF_NR_IDX
+};
+
+enum update_index {
+ UPDATE_STATUS_IDX = 0,
+ UPDATE_EXT_STATUS_IDX = 1,
+ UPDATE_AUTH_TIME_LOW_IDX = 2,
+ UPDATE_AUTH_TIME_HI_IDX = 3,
+ UPDATE_EXEC_TIME_LOW_IDX = 4,
+ UPDATE_EXEC_TIME_HI_IDX = 5,
+ UPDATE_NR_IDX
+};
+
+enum pfru_start_action {
+ START_STAGE = 0,
+ START_ACTIVATE = 1,
+ START_STAGE_ACTIVATE = 2,
+};
+
+struct pfru_device {
+ u32 rev_id, index;
+ struct device *parent_dev;
+ struct miscdevice miscdev;
+};
+
+static DEFINE_IDA(pfru_ida);
+
+/*
+ * Manual reference:
+ * https://uefi.org/sites/default/files/resources/Intel_MM_OS_Interface_Spec_Rev100.pdf
+ *
+ * pfru_guid is the parameter for _DSM method
+ */
+static const guid_t pfru_guid =
+ GUID_INIT(0xECF9533B, 0x4A3C, 0x4E89, 0x93, 0x9E, 0xC7, 0x71,
+ 0x12, 0x60, 0x1C, 0x6D);
+
+/* pfru_code_inj_guid is the UUID to identify code injection EFI capsule file */
+static const guid_t pfru_code_inj_guid =
+ GUID_INIT(0xB2F84B79, 0x7B6E, 0x4E45, 0x88, 0x5F, 0x3F, 0xB9,
+ 0xBB, 0x18, 0x54, 0x02);
+
+/* pfru_drv_update_guid is the UUID to identify driver update EFI capsule file */
+static const guid_t pfru_drv_update_guid =
+ GUID_INIT(0x4569DD8C, 0x75F1, 0x429A, 0xA3, 0xD6, 0x24, 0xDE,
+ 0x80, 0x97, 0xA0, 0xDF);
+
+static inline int pfru_valid_revid(u32 id)
+{
+ return id == PFRU_REVID_1 || id == PFRU_REVID_2;
+}
+
+static inline struct pfru_device *to_pfru_dev(struct file *file)
+{
+ return container_of(file->private_data, struct pfru_device, miscdev);
+}
+
+static int query_capability(struct pfru_update_cap_info *cap_hdr,
+ struct pfru_device *pfru_dev)
+{
+ acpi_handle handle = ACPI_HANDLE(pfru_dev->parent_dev);
+ union acpi_object *out_obj;
+ int ret = -EINVAL;
+
+ out_obj = acpi_evaluate_dsm_typed(handle, &pfru_guid,
+ pfru_dev->rev_id,
+ PFRU_FUNC_QUERY_UPDATE_CAP,
+ NULL, ACPI_TYPE_PACKAGE);
+ if (!out_obj)
+ return ret;
+
+ if (out_obj->package.count < CAP_NR_IDX ||
+ out_obj->package.elements[CAP_STATUS_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[CAP_UPDATE_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[CAP_CODE_TYPE_IDX].type != ACPI_TYPE_BUFFER ||
+ out_obj->package.elements[CAP_FW_VER_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[CAP_CODE_RT_VER_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[CAP_DRV_TYPE_IDX].type != ACPI_TYPE_BUFFER ||
+ out_obj->package.elements[CAP_DRV_RT_VER_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[CAP_DRV_SVN_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[CAP_PLAT_ID_IDX].type != ACPI_TYPE_BUFFER ||
+ out_obj->package.elements[CAP_OEM_ID_IDX].type != ACPI_TYPE_BUFFER ||
+ out_obj->package.elements[CAP_OEM_INFO_IDX].type != ACPI_TYPE_BUFFER)
+ goto free_acpi_buffer;
+
+ cap_hdr->status = out_obj->package.elements[CAP_STATUS_IDX].integer.value;
+ if (cap_hdr->status != DSM_SUCCEED) {
+ ret = -EBUSY;
+ dev_dbg(pfru_dev->parent_dev, "Error Status:%d\n", cap_hdr->status);
+ goto free_acpi_buffer;
+ }
+
+ cap_hdr->update_cap = out_obj->package.elements[CAP_UPDATE_IDX].integer.value;
+ memcpy(&cap_hdr->code_type,
+ out_obj->package.elements[CAP_CODE_TYPE_IDX].buffer.pointer,
+ out_obj->package.elements[CAP_CODE_TYPE_IDX].buffer.length);
+ cap_hdr->fw_version =
+ out_obj->package.elements[CAP_FW_VER_IDX].integer.value;
+ cap_hdr->code_rt_version =
+ out_obj->package.elements[CAP_CODE_RT_VER_IDX].integer.value;
+ memcpy(&cap_hdr->drv_type,
+ out_obj->package.elements[CAP_DRV_TYPE_IDX].buffer.pointer,
+ out_obj->package.elements[CAP_DRV_TYPE_IDX].buffer.length);
+ cap_hdr->drv_rt_version =
+ out_obj->package.elements[CAP_DRV_RT_VER_IDX].integer.value;
+ cap_hdr->drv_svn =
+ out_obj->package.elements[CAP_DRV_SVN_IDX].integer.value;
+ memcpy(&cap_hdr->platform_id,
+ out_obj->package.elements[CAP_PLAT_ID_IDX].buffer.pointer,
+ out_obj->package.elements[CAP_PLAT_ID_IDX].buffer.length);
+ memcpy(&cap_hdr->oem_id,
+ out_obj->package.elements[CAP_OEM_ID_IDX].buffer.pointer,
+ out_obj->package.elements[CAP_OEM_ID_IDX].buffer.length);
+ cap_hdr->oem_info_len =
+ out_obj->package.elements[CAP_OEM_INFO_IDX].buffer.length;
+
+ ret = 0;
+
+free_acpi_buffer:
+ kfree(out_obj);
+
+ return ret;
+}
+
+static int query_buffer(struct pfru_com_buf_info *info,
+ struct pfru_device *pfru_dev)
+{
+ acpi_handle handle = ACPI_HANDLE(pfru_dev->parent_dev);
+ union acpi_object *out_obj;
+ int ret = -EINVAL;
+
+ out_obj = acpi_evaluate_dsm_typed(handle, &pfru_guid,
+ pfru_dev->rev_id, PFRU_FUNC_QUERY_BUF,
+ NULL, ACPI_TYPE_PACKAGE);
+ if (!out_obj)
+ return ret;
+
+ if (out_obj->package.count < BUF_NR_IDX ||
+ out_obj->package.elements[BUF_STATUS_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[BUF_EXT_STATUS_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[BUF_ADDR_LOW_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[BUF_ADDR_HI_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[BUF_SIZE_IDX].type != ACPI_TYPE_INTEGER)
+ goto free_acpi_buffer;
+
+ info->status = out_obj->package.elements[BUF_STATUS_IDX].integer.value;
+ info->ext_status =
+ out_obj->package.elements[BUF_EXT_STATUS_IDX].integer.value;
+ if (info->status != DSM_SUCCEED) {
+ ret = -EBUSY;
+ dev_dbg(pfru_dev->parent_dev, "Error Status:%d\n", info->status);
+ dev_dbg(pfru_dev->parent_dev, "Error Extended Status:%d\n", info->ext_status);
+
+ goto free_acpi_buffer;
+ }
+
+ info->addr_lo =
+ out_obj->package.elements[BUF_ADDR_LOW_IDX].integer.value;
+ info->addr_hi =
+ out_obj->package.elements[BUF_ADDR_HI_IDX].integer.value;
+ info->buf_size = out_obj->package.elements[BUF_SIZE_IDX].integer.value;
+
+ ret = 0;
+
+free_acpi_buffer:
+ kfree(out_obj);
+
+ return ret;
+}
+
+static int get_image_type(const struct efi_manage_capsule_image_header *img_hdr,
+ struct pfru_device *pfru_dev)
+{
+ const efi_guid_t *image_type_id = &img_hdr->image_type_id;
+
+ /* check whether this is a code injection or driver update */
+ if (guid_equal(image_type_id, &pfru_code_inj_guid))
+ return PFRU_CODE_INJECT_TYPE;
+
+ if (guid_equal(image_type_id, &pfru_drv_update_guid))
+ return PFRU_DRIVER_UPDATE_TYPE;
+
+ return -EINVAL;
+}
+
+static int adjust_efi_size(const struct efi_manage_capsule_image_header *img_hdr,
+ int size)
+{
+ /*
+ * The (u64 hw_ins) was introduced in UEFI spec version 2,
+ * and (u64 capsule_support) was introduced in version 3.
+ * The size needs to be adjusted accordingly. That is to
+ * say, version 1 should subtract the size of hw_ins+capsule_support,
+ * and version 2 should sbstract the size of capsule_support.
+ */
+ size += sizeof(struct efi_manage_capsule_image_header);
+ switch (img_hdr->ver) {
+ case 1:
+ return size - 2 * sizeof(u64);
+
+ case 2:
+ return size - sizeof(u64);
+
+ default:
+ /* only support version 1 and 2 */
+ return -EINVAL;
+ }
+}
+
+static bool applicable_image(const void *data, struct pfru_update_cap_info *cap,
+ struct pfru_device *pfru_dev)
+{
+ struct pfru_payload_hdr *payload_hdr;
+ const efi_capsule_header_t *cap_hdr = data;
+ const struct efi_manage_capsule_header *m_hdr;
+ const struct efi_manage_capsule_image_header *m_img_hdr;
+ const struct efi_image_auth *auth;
+ int type, size;
+
+ /*
+ * If the code in the capsule is older than the current
+ * firmware code, the update will be rejected by the firmware,
+ * so check the version of it upfront without engaging the
+ * Management Mode update mechanism which may be costly.
+ */
+ size = cap_hdr->headersize;
+ m_hdr = data + size;
+ /*
+ * Current data structure size plus variable array indicated
+ * by number of (emb_drv_cnt + payload_cnt)
+ */
+ size += offsetof(struct efi_manage_capsule_header, offset_list) +
+ (m_hdr->emb_drv_cnt + m_hdr->payload_cnt) * sizeof(u64);
+ m_img_hdr = data + size;
+
+ type = get_image_type(m_img_hdr, pfru_dev);
+ if (type < 0)
+ return false;
+
+ size = adjust_efi_size(m_img_hdr, size);
+ if (size < 0)
+ return false;
+
+ auth = data + size;
+ size += sizeof(u64) + auth->auth_info.hdr.len;
+ payload_hdr = (struct pfru_payload_hdr *)(data + size);
+
+ /* finally compare the version */
+ if (type == PFRU_CODE_INJECT_TYPE)
+ return payload_hdr->rt_ver >= cap->code_rt_version;
+
+ return payload_hdr->rt_ver >= cap->drv_rt_version;
+}
+
+static void print_update_debug_info(struct pfru_updated_result *result,
+ struct pfru_device *pfru_dev)
+{
+ dev_dbg(pfru_dev->parent_dev, "Update result:\n");
+ dev_dbg(pfru_dev->parent_dev, "Authentication Time Low:%lld\n",
+ result->low_auth_time);
+ dev_dbg(pfru_dev->parent_dev, "Authentication Time High:%lld\n",
+ result->high_auth_time);
+ dev_dbg(pfru_dev->parent_dev, "Execution Time Low:%lld\n",
+ result->low_exec_time);
+ dev_dbg(pfru_dev->parent_dev, "Execution Time High:%lld\n",
+ result->high_exec_time);
+}
+
+static int start_update(int action, struct pfru_device *pfru_dev)
+{
+ union acpi_object *out_obj, in_obj, in_buf;
+ struct pfru_updated_result update_result;
+ acpi_handle handle;
+ int ret = -EINVAL;
+
+ memset(&in_obj, 0, sizeof(in_obj));
+ memset(&in_buf, 0, sizeof(in_buf));
+ in_obj.type = ACPI_TYPE_PACKAGE;
+ in_obj.package.count = 1;
+ in_obj.package.elements = &in_buf;
+ in_buf.type = ACPI_TYPE_INTEGER;
+ in_buf.integer.value = action;
+
+ handle = ACPI_HANDLE(pfru_dev->parent_dev);
+ out_obj = acpi_evaluate_dsm_typed(handle, &pfru_guid,
+ pfru_dev->rev_id, PFRU_FUNC_START,
+ &in_obj, ACPI_TYPE_PACKAGE);
+ if (!out_obj)
+ return ret;
+
+ if (out_obj->package.count < UPDATE_NR_IDX ||
+ out_obj->package.elements[UPDATE_STATUS_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[UPDATE_EXT_STATUS_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[UPDATE_AUTH_TIME_LOW_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[UPDATE_AUTH_TIME_HI_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[UPDATE_EXEC_TIME_LOW_IDX].type != ACPI_TYPE_INTEGER ||
+ out_obj->package.elements[UPDATE_EXEC_TIME_HI_IDX].type != ACPI_TYPE_INTEGER)
+ goto free_acpi_buffer;
+
+ update_result.status =
+ out_obj->package.elements[UPDATE_STATUS_IDX].integer.value;
+ update_result.ext_status =
+ out_obj->package.elements[UPDATE_EXT_STATUS_IDX].integer.value;
+
+ if (update_result.status != DSM_SUCCEED) {
+ ret = -EBUSY;
+ dev_dbg(pfru_dev->parent_dev, "Error Status:%d\n", update_result.status);
+ dev_dbg(pfru_dev->parent_dev, "Error Extended Status:%d\n",
+ update_result.ext_status);
+
+ goto free_acpi_buffer;
+ }
+
+ update_result.low_auth_time =
+ out_obj->package.elements[UPDATE_AUTH_TIME_LOW_IDX].integer.value;
+ update_result.high_auth_time =
+ out_obj->package.elements[UPDATE_AUTH_TIME_HI_IDX].integer.value;
+ update_result.low_exec_time =
+ out_obj->package.elements[UPDATE_EXEC_TIME_LOW_IDX].integer.value;
+ update_result.high_exec_time =
+ out_obj->package.elements[UPDATE_EXEC_TIME_HI_IDX].integer.value;
+
+ print_update_debug_info(&update_result, pfru_dev);
+ ret = 0;
+
+free_acpi_buffer:
+ kfree(out_obj);
+
+ return ret;
+}
+
+static long pfru_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct pfru_update_cap_info cap_hdr;
+ struct pfru_device *pfru_dev = to_pfru_dev(file);
+ void __user *p = (void __user *)arg;
+ u32 rev;
+ int ret;
+
+ switch (cmd) {
+ case PFRU_IOC_QUERY_CAP:
+ ret = query_capability(&cap_hdr, pfru_dev);
+ if (ret)
+ return ret;
+
+ if (copy_to_user(p, &cap_hdr, sizeof(cap_hdr)))
+ return -EFAULT;
+
+ return 0;
+
+ case PFRU_IOC_SET_REV:
+ if (copy_from_user(&rev, p, sizeof(rev)))
+ return -EFAULT;
+
+ if (!pfru_valid_revid(rev))
+ return -EINVAL;
+
+ pfru_dev->rev_id = rev;
+
+ return 0;
+
+ case PFRU_IOC_STAGE:
+ return start_update(START_STAGE, pfru_dev);
+
+ case PFRU_IOC_ACTIVATE:
+ return start_update(START_ACTIVATE, pfru_dev);
+
+ case PFRU_IOC_STAGE_ACTIVATE:
+ return start_update(START_STAGE_ACTIVATE, pfru_dev);
+
+ default:
+ return -ENOTTY;
+ }
+}
+
+static ssize_t pfru_write(struct file *file, const char __user *buf,
+ size_t len, loff_t *ppos)
+{
+ struct pfru_device *pfru_dev = to_pfru_dev(file);
+ struct pfru_update_cap_info cap;
+ struct pfru_com_buf_info buf_info;
+ phys_addr_t phy_addr;
+ struct iov_iter iter;
+ struct iovec iov;
+ char *buf_ptr;
+ int ret;
+
+ ret = query_buffer(&buf_info, pfru_dev);
+ if (ret)
+ return ret;
+
+ if (len > buf_info.buf_size)
+ return -EINVAL;
+
+ iov.iov_base = (void __user *)buf;
+ iov.iov_len = len;
+ iov_iter_init(&iter, WRITE, &iov, 1, len);
+
+ /* map the communication buffer */
+ phy_addr = (phys_addr_t)((buf_info.addr_hi << 32) | buf_info.addr_lo);
+ buf_ptr = memremap(phy_addr, buf_info.buf_size, MEMREMAP_WB);
+ if (!buf_ptr)
+ return -ENOMEM;
+
+ if (!copy_from_iter_full(buf_ptr, len, &iter)) {
+ ret = -EINVAL;
+ goto unmap;
+ }
+
+ /* check if the capsule header has a valid version number */
+ ret = query_capability(&cap, pfru_dev);
+ if (ret)
+ goto unmap;
+
+ if (!applicable_image(buf_ptr, &cap, pfru_dev))
+ ret = -EINVAL;
+
+unmap:
+ memunmap(buf_ptr);
+
+ return ret ?: len;
+}
+
+static const struct file_operations acpi_pfru_fops = {
+ .owner = THIS_MODULE,
+ .write = pfru_write,
+ .unlocked_ioctl = pfru_ioctl,
+ .llseek = noop_llseek,
+};
+
+static int acpi_pfru_remove(struct platform_device *pdev)
+{
+ struct pfru_device *pfru_dev = platform_get_drvdata(pdev);
+
+ misc_deregister(&pfru_dev->miscdev);
+
+ return 0;
+}
+
+static void pfru_put_idx(void *data)
+{
+ struct pfru_device *pfru_dev = data;
+
+ ida_free(&pfru_ida, pfru_dev->index);
+}
+
+static int acpi_pfru_probe(struct platform_device *pdev)
+{
+ acpi_handle handle = ACPI_HANDLE(&pdev->dev);
+ struct pfru_device *pfru_dev;
+ int ret;
+
+ if (!acpi_has_method(handle, "_DSM")) {
+ dev_dbg(&pdev->dev, "Missing _DSM\n");
+ return -ENODEV;
+ }
+
+ pfru_dev = devm_kzalloc(&pdev->dev, sizeof(*pfru_dev), GFP_KERNEL);
+ if (!pfru_dev)
+ return -ENOMEM;
+
+ ret = ida_alloc(&pfru_ida, GFP_KERNEL);
+ if (ret < 0)
+ return ret;
+
+ pfru_dev->index = ret;
+ ret = devm_add_action_or_reset(&pdev->dev, pfru_put_idx, pfru_dev);
+ if (ret)
+ return ret;
+
+ pfru_dev->rev_id = PFRU_DEFAULT_REV_ID;
+ pfru_dev->parent_dev = &pdev->dev;
+
+ pfru_dev->miscdev.minor = MISC_DYNAMIC_MINOR;
+ pfru_dev->miscdev.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
+ "pfru%d", pfru_dev->index);
+ if (!pfru_dev->miscdev.name)
+ return -ENOMEM;
+
+ pfru_dev->miscdev.nodename = devm_kasprintf(&pdev->dev, GFP_KERNEL,
+ "acpi_pfr_update%d", pfru_dev->index);
+ if (!pfru_dev->miscdev.nodename)
+ return -ENOMEM;
+
+ pfru_dev->miscdev.fops = &acpi_pfru_fops;
+ pfru_dev->miscdev.parent = &pdev->dev;
+
+ ret = misc_register(&pfru_dev->miscdev);
+ if (ret)
+ return ret;
+
+ platform_set_drvdata(pdev, pfru_dev);
+
+ return 0;
+}
+
+static const struct acpi_device_id acpi_pfru_ids[] = {
+ {"INTC1080"},
+ {}
+};
+MODULE_DEVICE_TABLE(acpi, acpi_pfru_ids);
+
+static struct platform_driver acpi_pfru_driver = {
+ .driver = {
+ .name = "pfr_update",
+ .acpi_match_table = acpi_pfru_ids,
+ },
+ .probe = acpi_pfru_probe,
+ .remove = acpi_pfru_remove,
+};
+module_platform_driver(acpi_pfru_driver);
+
+MODULE_DESCRIPTION("Platform Firmware Runtime Update device driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/efi.h b/include/linux/efi.h
index ef8dbc0a15221479514e451b9c1c99c44955d484..721ccfe320f8dd729edc0373e78aad6d7eefc2c1 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -148,6 +148,52 @@ typedef struct {
u32 imagesize;
} efi_capsule_header_t;
+/* EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER */
+struct efi_manage_capsule_header {
+ u32 ver;
+ u16 emb_drv_cnt;
+ u16 payload_cnt;
+ /*
+ * Variable-size array of the size given by the sum of
+ * emb_drv_cnt and payload_cnt.
+ */
+ u64 offset_list[];
+} __packed;
+
+/* EFI_FIRMWARE_MANAGEMENT_CAPSULE_IMAGE_HEADER */
+struct efi_manage_capsule_image_header {
+ u32 ver;
+ efi_guid_t image_type_id;
+ u8 image_index;
+ u8 reserved_bytes[3];
+ u32 image_size;
+ u32 vendor_code_size;
+ /* hw_ins was introduced in version 2 */
+ u64 hw_ins;
+ /* capsule_support was introduced in version 3 */
+ u64 capsule_support;
+} __packed;
+
+/* WIN_CERTIFICATE */
+struct win_cert {
+ u32 len;
+ u16 rev;
+ u16 cert_type;
+};
+
+/* WIN_CERTIFICATE_UEFI_GUID */
+struct win_cert_uefi_guid {
+ struct win_cert hdr;
+ efi_guid_t cert_type;
+ u8 cert_data[];
+};
+
+/* EFI_FIRMWARE_IMAGE_AUTHENTICATION */
+struct efi_image_auth {
+ u64 mon_count;
+ struct win_cert_uefi_guid auth_info;
+};
+
/*
* EFI capsule flags
*/
diff --git a/include/uapi/linux/pfrut.h b/include/uapi/linux/pfrut.h
new file mode 100644
index 0000000000000000000000000000000000000000..42fa15f8310d6bca08f678c65a48274efab779af
--- /dev/null
+++ b/include/uapi/linux/pfrut.h
@@ -0,0 +1,262 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Platform Firmware Runtime Update header
+ *
+ * Copyright(c) 2021 Intel Corporation. All rights reserved.
+ */
+#ifndef __PFRUT_H__
+#define __PFRUT_H__
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+#define PFRUT_IOCTL_MAGIC 0xEE
+
+/**
+ * PFRU_IOC_SET_REV - _IOW(PFRUT_IOCTL_MAGIC, 0x01, unsigned int)
+ *
+ * Return:
+ * * 0 - success
+ * * -EFAULT - fail to read the revision id
+ * * -EINVAL - user provides an invalid revision id
+ *
+ * Set the Revision ID for Platform Firmware Runtime Update.
+ */
+#define PFRU_IOC_SET_REV _IOW(PFRUT_IOCTL_MAGIC, 0x01, unsigned int)
+
+/**
+ * PFRU_IOC_STAGE - _IOW(PFRUT_IOCTL_MAGIC, 0x02, unsigned int)
+ *
+ * Return:
+ * * 0 - success
+ * * -EINVAL - stage phase returns invalid result
+ *
+ * Stage a capsule image from communication buffer and perform authentication.
+ */
+#define PFRU_IOC_STAGE _IOW(PFRUT_IOCTL_MAGIC, 0x02, unsigned int)
+
+/**
+ * PFRU_IOC_ACTIVATE - _IOW(PFRUT_IOCTL_MAGIC, 0x03, unsigned int)
+ *
+ * Return:
+ * * 0 - success
+ * * -EINVAL - activate phase returns invalid result
+ *
+ * Activate a previously staged capsule image.
+ */
+#define PFRU_IOC_ACTIVATE _IOW(PFRUT_IOCTL_MAGIC, 0x03, unsigned int)
+
+/**
+ * PFRU_IOC_STAGE_ACTIVATE - _IOW(PFRUT_IOCTL_MAGIC, 0x04, unsigned int)
+ *
+ * Return:
+ * * 0 - success
+ * * -EINVAL - stage/activate phase returns invalid result.
+ *
+ * Perform both stage and activation action.
+ */
+#define PFRU_IOC_STAGE_ACTIVATE _IOW(PFRUT_IOCTL_MAGIC, 0x04, unsigned int)
+
+/**
+ * PFRU_IOC_QUERY_CAP - _IOR(PFRUT_IOCTL_MAGIC, 0x05,
+ * struct pfru_update_cap_info)
+ *
+ * Return:
+ * * 0 - success
+ * * -EINVAL - query phase returns invalid result
+ * * -EFAULT - the result fails to be copied to userspace
+ *
+ * Retrieve information on the Platform Firmware Runtime Update capability.
+ * The information is a struct pfru_update_cap_info.
+ */
+#define PFRU_IOC_QUERY_CAP _IOR(PFRUT_IOCTL_MAGIC, 0x05, struct pfru_update_cap_info)
+
+/**
+ * struct pfru_payload_hdr - Capsule file payload header.
+ *
+ * @sig: Signature of this capsule file.
+ * @hdr_version: Revision of this header structure.
+ * @hdr_size: Size of this header, including the OemHeader bytes.
+ * @hw_ver: The supported firmware version.
+ * @rt_ver: Version of the code injection image.
+ * @platform_id: A platform specific GUID to specify the platform what
+ * this capsule image support.
+ */
+struct pfru_payload_hdr {
+ __u32 sig;
+ __u32 hdr_version;
+ __u32 hdr_size;
+ __u32 hw_ver;
+ __u32 rt_ver;
+ __u8 platform_id[16];
+};
+
+enum pfru_dsm_status {
+ DSM_SUCCEED = 0,
+ DSM_FUNC_NOT_SUPPORT = 1,
+ DSM_INVAL_INPUT = 2,
+ DSM_HARDWARE_ERR = 3,
+ DSM_RETRY_SUGGESTED = 4,
+ DSM_UNKNOWN = 5,
+ DSM_FUNC_SPEC_ERR = 6,
+};
+
+/**
+ * struct pfru_update_cap_info - Runtime update capability information.
+ *
+ * @status: Indicator of whether this query succeed.
+ * @update_cap: Bitmap to indicate whether the feature is supported.
+ * @code_type: A buffer containing an image type GUID.
+ * @fw_version: Platform firmware version.
+ * @code_rt_version: Code injection runtime version for anti-rollback.
+ * @drv_type: A buffer containing an image type GUID.
+ * @drv_rt_version: The version of the driver update runtime code.
+ * @drv_svn: The secure version number(SVN) of the driver update runtime code.
+ * @platform_id: A buffer containing a platform ID GUID.
+ * @oem_id: A buffer containing an OEM ID GUID.
+ * @oem_info_len: Length of the buffer containing the vendor specific information.
+ */
+struct pfru_update_cap_info {
+ __u32 status;
+ __u32 update_cap;
+
+ __u8 code_type[16];
+ __u32 fw_version;
+ __u32 code_rt_version;
+
+ __u8 drv_type[16];
+ __u32 drv_rt_version;
+ __u32 drv_svn;
+
+ __u8 platform_id[16];
+ __u8 oem_id[16];
+
+ __u32 oem_info_len;
+};
+
+/**
+ * struct pfru_com_buf_info - Communication buffer information.
+ *
+ * @status: Indicator of whether this query succeed.
+ * @ext_status: Implementation specific query result.
+ * @addr_lo: Low 32bit physical address of the communication buffer to hold
+ * a runtime update package.
+ * @addr_hi: High 32bit physical address of the communication buffer to hold
+ * a runtime update package.
+ * @buf_size: Maximum size in bytes of the communication buffer.
+ */
+struct pfru_com_buf_info {
+ __u32 status;
+ __u32 ext_status;
+ __u64 addr_lo;
+ __u64 addr_hi;
+ __u32 buf_size;
+};
+
+/**
+ * struct pfru_updated_result - Platform firmware runtime update result information.
+ * @status: Indicator of whether this update succeed.
+ * @ext_status: Implementation specific update result.
+ * @low_auth_time: Low 32bit value of image authentication time in nanosecond.
+ * @high_auth_time: High 32bit value of image authentication time in nanosecond.
+ * @low_exec_time: Low 32bit value of image execution time in nanosecond.
+ * @high_exec_time: High 32bit value of image execution time in nanosecond.
+ */
+struct pfru_updated_result {
+ __u32 status;
+ __u32 ext_status;
+ __u64 low_auth_time;
+ __u64 high_auth_time;
+ __u64 low_exec_time;
+ __u64 high_exec_time;
+};
+
+/**
+ * struct pfrt_log_data_info - Log Data from telemetry service.
+ * @status: Indicator of whether this update succeed.
+ * @ext_status: Implementation specific update result.
+ * @chunk1_addr_lo: Low 32bit physical address of the telemetry data chunk1
+ * starting address.
+ * @chunk1_addr_hi: High 32bit physical address of the telemetry data chunk1
+ * starting address.
+ * @chunk2_addr_lo: Low 32bit physical address of the telemetry data chunk2
+ * starting address.
+ * @chunk2_addr_hi: High 32bit physical address of the telemetry data chunk2
+ * starting address.
+ * @max_data_size: Maximum supported size of data of all data chunks combined.
+ * @chunk1_size: Data size in bytes of the telemetry data chunk1 buffer.
+ * @chunk2_size: Data size in bytes of the telemetry data chunk2 buffer.
+ * @rollover_cnt: Number of times telemetry data buffer is overwritten
+ * since telemetry buffer reset.
+ * @reset_cnt: Number of times telemetry services resets that results in
+ * rollover count and data chunk buffers are reset.
+ */
+struct pfrt_log_data_info {
+ __u32 status;
+ __u32 ext_status;
+ __u64 chunk1_addr_lo;
+ __u64 chunk1_addr_hi;
+ __u64 chunk2_addr_lo;
+ __u64 chunk2_addr_hi;
+ __u32 max_data_size;
+ __u32 chunk1_size;
+ __u32 chunk2_size;
+ __u32 rollover_cnt;
+ __u32 reset_cnt;
+};
+
+/**
+ * struct pfrt_log_info - Telemetry log information.
+ * @log_level: The telemetry log level.
+ * @log_type: The telemetry log type(history and execution).
+ * @log_revid: The telemetry log revision id.
+ */
+struct pfrt_log_info {
+ __u32 log_level;
+ __u32 log_type;
+ __u32 log_revid;
+};
+
+/**
+ * PFRT_LOG_IOC_SET_INFO - _IOW(PFRUT_IOCTL_MAGIC, 0x06,
+ * struct pfrt_log_info)
+ *
+ * Return:
+ * * 0 - success
+ * * -EFAULT - fail to get the setting parameter
+ * * -EINVAL - fail to set the log level
+ *
+ * Set the PFRT log level and log type. The input information is
+ * a struct pfrt_log_info.
+ */
+#define PFRT_LOG_IOC_SET_INFO _IOW(PFRUT_IOCTL_MAGIC, 0x06, struct pfrt_log_info)
+
+/**
+ * PFRT_LOG_IOC_GET_INFO - _IOR(PFRUT_IOCTL_MAGIC, 0x07,
+ * struct pfrt_log_info)
+ *
+ * Return:
+ * * 0 - success
+ * * -EINVAL - fail to get the log level
+ * * -EFAULT - fail to copy the result back to userspace
+ *
+ * Retrieve log level and log type of the telemetry. The information is
+ * a struct pfrt_log_info.
+ */
+#define PFRT_LOG_IOC_GET_INFO _IOR(PFRUT_IOCTL_MAGIC, 0x07, struct pfrt_log_info)
+
+/**
+ * PFRT_LOG_IOC_GET_DATA_INFO - _IOR(PFRUT_IOCTL_MAGIC, 0x08,
+ * struct pfrt_log_data_info)
+ *
+ * Return:
+ * * 0 - success
+ * * -EINVAL - fail to get the log buffer information
+ * * -EFAULT - fail to copy the log buffer information to userspace
+ *
+ * Retrieve data information about the telemetry. The information
+ * is a struct pfrt_log_data_info.
+ */
+#define PFRT_LOG_IOC_GET_DATA_INFO _IOR(PFRUT_IOCTL_MAGIC, 0x08, struct pfrt_log_data_info)
+
+#endif /* __PFRUT_H__ */
diff --git a/tools/power/acpi/.gitignore b/tools/power/acpi/.gitignore
index 0b319fc8bb17f8862044ee4326dd582ec1d32263..eada0297ef88371d47d71f33f26a9c3c94395e72 100644
--- a/tools/power/acpi/.gitignore
+++ b/tools/power/acpi/.gitignore
@@ -2,4 +2,5 @@
/acpidbg
/acpidump
/ec
+/pfrut
/include/
diff --git a/tools/power/acpi/Makefile b/tools/power/acpi/Makefile
index a249c50ebf555df00d41bd1e1907eb6f742ec3fd..5ff1d9c864d07a3351186b10d91f89abc5317964 100644
--- a/tools/power/acpi/Makefile
+++ b/tools/power/acpi/Makefile
@@ -9,18 +9,18 @@ include ../../scripts/Makefile.include
.NOTPARALLEL:
-all: acpidbg acpidump ec
-clean: acpidbg_clean acpidump_clean ec_clean
-install: acpidbg_install acpidump_install ec_install
-uninstall: acpidbg_uninstall acpidump_uninstall ec_uninstall
+all: acpidbg acpidump ec pfrut
+clean: acpidbg_clean acpidump_clean ec_clean pfrut_clean
+install: acpidbg_install acpidump_install ec_install pfrut_install
+uninstall: acpidbg_uninstall acpidump_uninstall ec_uninstall pfrut_uninstall
-acpidbg acpidump ec: FORCE
+acpidbg acpidump ec pfrut: FORCE
$(call descend,tools/$@,all)
-acpidbg_clean acpidump_clean ec_clean:
+acpidbg_clean acpidump_clean ec_clean pfrut_clean:
$(call descend,tools/$(@:_clean=),clean)
-acpidbg_install acpidump_install ec_install:
+acpidbg_install acpidump_install ec_install pfrut_install:
$(call descend,tools/$(@:_install=),install)
-acpidbg_uninstall acpidump_uninstall ec_uninstall:
+acpidbg_uninstall acpidump_uninstall ec_uninstall pfrut_uninstall:
$(call descend,tools/$(@:_uninstall=),uninstall)
.PHONY: FORCE
diff --git a/tools/power/acpi/Makefile.rules b/tools/power/acpi/Makefile.rules
index 1d7616f5d0aec848204ede85d79ae6a9516cfc0a..b71aada776889f767f91d61d8964a2f43ce412a8 100644
--- a/tools/power/acpi/Makefile.rules
+++ b/tools/power/acpi/Makefile.rules
@@ -9,7 +9,7 @@ objdir := $(OUTPUT)tools/$(TOOL)/
toolobjs := $(addprefix $(objdir),$(TOOL_OBJS))
$(OUTPUT)$(TOOL): $(toolobjs) FORCE
$(ECHO) " LD " $(subst $(OUTPUT),,$@)
- $(QUIET) $(LD) $(CFLAGS) $(LDFLAGS) $(toolobjs) -L$(OUTPUT) -o $@
+ $(QUIET) $(LD) $(CFLAGS) $(toolobjs) $(LDFLAGS) -L$(OUTPUT) -o $@
$(ECHO) " STRIP " $(subst $(OUTPUT),,$@)
$(QUIET) $(STRIPCMD) $@
diff --git a/tools/power/acpi/man/pfrut.8 b/tools/power/acpi/man/pfrut.8
new file mode 100644
index 0000000000000000000000000000000000000000..3db574770e8db17a9ecad85f8a50d5268258b435
--- /dev/null
+++ b/tools/power/acpi/man/pfrut.8
@@ -0,0 +1,137 @@
+.TH "PFRUT" "8" "October 2021" "pfrut 1.0" ""
+.hy
+.SH Name
+.PP
+pfrut \- Platform Firmware Runtime Update and Telemetry tool
+.SH SYNOPSIS
+.PP
+\f[B]pfrut\f[R] [\f[I]Options\f[R]]
+.SH DESCRIPTION
+.PP
+The PFRUT(Platform Firmware Runtime Update and Telemetry) kernel interface is designed
+to
+.PD 0
+.P
+.PD
+interact with the platform firmware interface defined in the
+.PD 0
+.P
+.PD
+Management Mode Firmware Runtime
+Update (https://uefi.org/sites/default/files/resources/Intel_MM_OS_Interface_Spec_Rev100.pdf)
+.PD 0
+.P
+.PD
+\f[B]pfrut\f[R] is the tool to interact with the kernel interface.
+.PD 0
+.P
+.PD
+.SH OPTIONS
+.TP
+.B \f[B]\-h\f[R], \f[B]\-\-help\f[R]
+Display helper information.
+.TP
+.B \f[B]\-l\f[R], \f[B]\-\-load\f[R]
+Load the capsule file into the system.
+To be more specific, the capsule file will be copied to the
+communication buffer.
+.TP
+.B \f[B]\-s\f[R], \f[B]\-\-stage\f[R]
+Stage the capsule image from communication buffer into Management Mode
+and perform authentication.
+.TP
+.B \f[B]\-a\f[R], \f[B]\-\-activate\f[R]
+Activate a previous staged capsule image.
+.TP
+.B \f[B]\-u\f[R], \f[B]\-\-update\f[R]
+Perform both stage and activation actions.
+.TP
+.B \f[B]\-q\f[R], \f[B]\-\-query\f[R]
+Query the update capability.
+.TP
+.B \f[B]\-d\f[R], \f[B]\-\-setrev\f[R]
+Set the revision ID of code injection/driver update.
+.TP
+.B \f[B]\-D\f[R], \f[B]\-\-setrevlog\f[R]
+Set the revision ID of telemetry.
+.TP
+.B \f[B]\-G\f[R], \f[B]\-\-getloginfo\f[R]
+Get telemetry log information and print it out.
+.TP
+.B \f[B]\-T\f[R], \f[B]\-\-type\f[R]
+Set the telemetry log data type.
+.TP
+.B \f[B]\-L\f[R], \f[B]\-\-level\f[R]
+Set the telemetry log level.
+.TP
+.B \f[B]\-R\f[R], \f[B]\-\-read\f[R]
+Read all the telemetry data and print it out.
+.SH EXAMPLES
+.PP
+\f[B]pfrut \-G\f[R]
+.PP
+log_level:4
+.PD 0
+.P
+.PD
+log_type:0
+.PD 0
+.P
+.PD
+log_revid:2
+.PD 0
+.P
+.PD
+max_data_size:65536
+.PD 0
+.P
+.PD
+chunk1_size:0
+.PD 0
+.P
+.PD
+chunk2_size:1401
+.PD 0
+.P
+.PD
+rollover_cnt:0
+.PD 0
+.P
+.PD
+reset_cnt:4
+.PP
+\f[B]pfru \-q\f[R]
+.PP
+code injection image type:794bf8b2\-6e7b\-454e\-885f\-3fb9bb185402
+.PD 0
+.P
+.PD
+fw_version:0
+.PD 0
+.P
+.PD
+code_rt_version:1
+.PD 0
+.P
+.PD
+driver update image type:0e5f0b14\-f849\-7945\-ad81\-bc7b6d2bb245
+.PD 0
+.P
+.PD
+drv_rt_version:0
+.PD 0
+.P
+.PD
+drv_svn:0
+.PD 0
+.P
+.PD
+platform id:39214663\-b1a8\-4eaa\-9024\-f2bb53ea4723
+.PD 0
+.P
+.PD
+oem id:a36db54f\-ea2a\-e14e\-b7c4\-b5780e51ba3d
+.PP
+\f[B]pfrut \-l yours.cap \-u \-T 1 \-L 4\f[R]
+.SH AUTHORS
+Chen Yu.
diff --git a/tools/power/acpi/tools/pfrut/Makefile b/tools/power/acpi/tools/pfrut/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..61c1a96fd433da3a5ac41d5f3348bbff2d8b3c70
--- /dev/null
+++ b/tools/power/acpi/tools/pfrut/Makefile
@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+include ../../Makefile.config
+
+TOOL = pfrut
+EXTRA_INSTALL = install-man
+EXTRA_UNINSTALL = uninstall-man
+
+CFLAGS += -Wall -O2
+CFLAGS += -DPFRUT_HEADER='"../../../../../include/uapi/linux/pfrut.h"'
+LDFLAGS += -luuid
+
+TOOL_OBJS = \
+ pfrut.o
+
+include ../../Makefile.rules
+
+install-man: $(srctree)/man/pfrut.8
+ $(ECHO) " INST " pfrut.8
+ $(QUIET) $(INSTALL_DATA) -D $< $(DESTDIR)$(mandir)/man8/pfrut.8
+uninstall-man:
+ $(ECHO) " UNINST " pfrut.8
+ $(QUIET) rm -f $(DESTDIR)$(mandir)/man8/pfrut.8
diff --git a/tools/power/acpi/tools/pfrut/pfrut.c b/tools/power/acpi/tools/pfrut/pfrut.c
new file mode 100644
index 0000000000000000000000000000000000000000..d79c335594b201fd995e3b0b37220cf9166fbd2f
--- /dev/null
+++ b/tools/power/acpi/tools/pfrut/pfrut.c
@@ -0,0 +1,424 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Platform Firmware Runtime Update tool to do Management
+ * Mode code injection/driver update and telemetry retrieval.
+ *
+ * This tool uses the interfaces provided by pfr_update and
+ * pfr_telemetry drivers. These interfaces are exposed via
+ * /dev/pfr_update and /dev/pfr_telemetry. Write operation
+ * on the /dev/pfr_update is to load the EFI capsule into
+ * kernel space. Mmap/read operations on /dev/pfr_telemetry
+ * could be used to read the telemetry data to user space.
+ */
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <uuid/uuid.h>
+#include PFRUT_HEADER
+
+char *capsule_name;
+int action, query_cap, log_type, log_level, log_read, log_getinfo,
+ revid, log_revid;
+int set_log_level, set_log_type,
+ set_revid, set_log_revid;
+
+char *progname;
+
+#define LOG_ERR 0
+#define LOG_WARN 1
+#define LOG_INFO 2
+#define LOG_VERB 4
+#define LOG_EXEC_IDX 0
+#define LOG_HISTORY_IDX 1
+#define REVID_1 1
+#define REVID_2 2
+
+static int valid_log_level(int level)
+{
+ return level == LOG_ERR || level == LOG_WARN ||
+ level == LOG_INFO || level == LOG_VERB;
+}
+
+static int valid_log_type(int type)
+{
+ return type == LOG_EXEC_IDX || type == LOG_HISTORY_IDX;
+}
+
+static inline int valid_log_revid(int id)
+{
+ return id == REVID_1 || id == REVID_2;
+}
+
+static void help(void)
+{
+ fprintf(stderr,
+ "usage: %s [OPTIONS]\n"
+ " code injection:\n"
+ " -l, --load\n"
+ " -s, --stage\n"
+ " -a, --activate\n"
+ " -u, --update [stage and activate]\n"
+ " -q, --query\n"
+ " -d, --revid update\n"
+ " telemetry:\n"
+ " -G, --getloginfo\n"
+ " -T, --type(0:execution, 1:history)\n"
+ " -L, --level(0, 1, 2, 4)\n"
+ " -R, --read\n"
+ " -D, --revid log\n",
+ progname);
+}
+
+char *option_string = "l:sauqd:GT:L:RD:h";
+static struct option long_options[] = {
+ {"load", required_argument, 0, 'l'},
+ {"stage", no_argument, 0, 's'},
+ {"activate", no_argument, 0, 'a'},
+ {"update", no_argument, 0, 'u'},
+ {"query", no_argument, 0, 'q'},
+ {"getloginfo", no_argument, 0, 'G'},
+ {"type", required_argument, 0, 'T'},
+ {"level", required_argument, 0, 'L'},
+ {"read", no_argument, 0, 'R'},
+ {"setrev", required_argument, 0, 'd'},
+ {"setrevlog", required_argument, 0, 'D'},
+ {"help", no_argument, 0, 'h'},
+ {}
+};
+
+static void parse_options(int argc, char **argv)
+{
+ int option_index = 0;
+ char *pathname;
+ int opt;
+
+ pathname = strdup(argv[0]);
+ progname = basename(pathname);
+
+ while ((opt = getopt_long_only(argc, argv, option_string,
+ long_options, &option_index)) != -1) {
+ switch (opt) {
+ case 'l':
+ capsule_name = optarg;
+ break;
+ case 's':
+ action = 1;
+ break;
+ case 'a':
+ action = 2;
+ break;
+ case 'u':
+ action = 3;
+ break;
+ case 'q':
+ query_cap = 1;
+ break;
+ case 'G':
+ log_getinfo = 1;
+ break;
+ case 'T':
+ log_type = atoi(optarg);
+ set_log_type = 1;
+ break;
+ case 'L':
+ log_level = atoi(optarg);
+ set_log_level = 1;
+ break;
+ case 'R':
+ log_read = 1;
+ break;
+ case 'd':
+ revid = atoi(optarg);
+ set_revid = 1;
+ break;
+ case 'D':
+ log_revid = atoi(optarg);
+ set_log_revid = 1;
+ break;
+ case 'h':
+ help();
+ exit(0);
+ default:
+ break;
+ }
+ }
+}
+
+void print_cap(struct pfru_update_cap_info *cap)
+{
+ char *uuid;
+
+ uuid = malloc(37);
+ if (!uuid) {
+ perror("Can not allocate uuid buffer\n");
+ exit(1);
+ }
+
+ uuid_unparse(cap->code_type, uuid);
+ printf("code injection image type:%s\n", uuid);
+ printf("fw_version:%d\n", cap->fw_version);
+ printf("code_rt_version:%d\n", cap->code_rt_version);
+
+ uuid_unparse(cap->drv_type, uuid);
+ printf("driver update image type:%s\n", uuid);
+ printf("drv_rt_version:%d\n", cap->drv_rt_version);
+ printf("drv_svn:%d\n", cap->drv_svn);
+
+ uuid_unparse(cap->platform_id, uuid);
+ printf("platform id:%s\n", uuid);
+ uuid_unparse(cap->oem_id, uuid);
+ printf("oem id:%s\n", uuid);
+ printf("oem information length:%d\n", cap->oem_info_len);
+
+ free(uuid);
+}
+
+int main(int argc, char *argv[])
+{
+ int fd_update, fd_update_log, fd_capsule;
+ struct pfrt_log_data_info data_info;
+ struct pfrt_log_info info;
+ struct pfru_update_cap_info cap;
+ void *addr_map_capsule;
+ struct stat st;
+ char *log_buf;
+ int ret = 0;
+
+ if (getuid() != 0) {
+ printf("Please run the tool as root - Exiting.\n");
+ return 1;
+ }
+
+ parse_options(argc, argv);
+
+ fd_update = open("/dev/acpi_pfr_update0", O_RDWR);
+ if (fd_update < 0) {
+ printf("PFRU device not supported - Quit...\n");
+ return 1;
+ }
+
+ fd_update_log = open("/dev/acpi_pfr_telemetry0", O_RDWR);
+ if (fd_update_log < 0) {
+ printf("PFRT device not supported - Quit...\n");
+ return 1;
+ }
+
+ if (query_cap) {
+ ret = ioctl(fd_update, PFRU_IOC_QUERY_CAP, &cap);
+ if (ret)
+ perror("Query Update Capability info failed.");
+ else
+ print_cap(&cap);
+
+ close(fd_update);
+ close(fd_update_log);
+
+ return ret;
+ }
+
+ if (log_getinfo) {
+ ret = ioctl(fd_update_log, PFRT_LOG_IOC_GET_DATA_INFO, &data_info);
+ if (ret) {
+ perror("Get telemetry data info failed.");
+ close(fd_update);
+ close(fd_update_log);
+
+ return 1;
+ }
+
+ ret = ioctl(fd_update_log, PFRT_LOG_IOC_GET_INFO, &info);
+ if (ret) {
+ perror("Get telemetry info failed.");
+ close(fd_update);
+ close(fd_update_log);
+
+ return 1;
+ }
+
+ printf("log_level:%d\n", info.log_level);
+ printf("log_type:%d\n", info.log_type);
+ printf("log_revid:%d\n", info.log_revid);
+ printf("max_data_size:%d\n", data_info.max_data_size);
+ printf("chunk1_size:%d\n", data_info.chunk1_size);
+ printf("chunk2_size:%d\n", data_info.chunk2_size);
+ printf("rollover_cnt:%d\n", data_info.rollover_cnt);
+ printf("reset_cnt:%d\n", data_info.reset_cnt);
+
+ return 0;
+ }
+
+ info.log_level = -1;
+ info.log_type = -1;
+ info.log_revid = -1;
+
+ if (set_log_level) {
+ if (!valid_log_level(log_level)) {
+ printf("Invalid log level %d\n",
+ log_level);
+ } else {
+ info.log_level = log_level;
+ }
+ }
+
+ if (set_log_type) {
+ if (!valid_log_type(log_type)) {
+ printf("Invalid log type %d\n",
+ log_type);
+ } else {
+ info.log_type = log_type;
+ }
+ }
+
+ if (set_log_revid) {
+ if (!valid_log_revid(log_revid)) {
+ printf("Invalid log revid %d, unchanged.\n",
+ log_revid);
+ } else {
+ info.log_revid = log_revid;
+ }
+ }
+
+ ret = ioctl(fd_update_log, PFRT_LOG_IOC_SET_INFO, &info);
+ if (ret) {
+ perror("Log information set failed.(log_level, log_type, log_revid)");
+ close(fd_update);
+ close(fd_update_log);
+
+ return 1;
+ }
+
+ if (set_revid) {
+ ret = ioctl(fd_update, PFRU_IOC_SET_REV, &revid);
+ if (ret) {
+ perror("pfru update revid set failed");
+ close(fd_update);
+ close(fd_update_log);
+
+ return 1;
+ }
+
+ printf("pfru update revid set to %d\n", revid);
+ }
+
+ if (capsule_name) {
+ fd_capsule = open(capsule_name, O_RDONLY);
+ if (fd_capsule < 0) {
+ perror("Can not open capsule file...");
+ close(fd_update);
+ close(fd_update_log);
+
+ return 1;
+ }
+
+ if (fstat(fd_capsule, &st) < 0) {
+ perror("Can not fstat capsule file...");
+ close(fd_capsule);
+ close(fd_update);
+ close(fd_update_log);
+
+ return 1;
+ }
+
+ addr_map_capsule = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED,
+ fd_capsule, 0);
+ if (addr_map_capsule == MAP_FAILED) {
+ perror("Failed to mmap capsule file.");
+ close(fd_capsule);
+ close(fd_update);
+ close(fd_update_log);
+
+ return 1;
+ }
+
+ ret = write(fd_update, (char *)addr_map_capsule, st.st_size);
+ printf("Load %d bytes of capsule file into the system\n",
+ ret);
+
+ if (ret == -1) {
+ perror("Failed to load capsule file");
+ close(fd_capsule);
+ close(fd_update);
+ close(fd_update_log);
+
+ return 1;
+ }
+
+ munmap(addr_map_capsule, st.st_size);
+ close(fd_capsule);
+ printf("Load done.\n");
+ }
+
+ if (action) {
+ if (action == 1) {
+ ret = ioctl(fd_update, PFRU_IOC_STAGE, NULL);
+ } else if (action == 2) {
+ ret = ioctl(fd_update, PFRU_IOC_ACTIVATE, NULL);
+ } else if (action == 3) {
+ ret = ioctl(fd_update, PFRU_IOC_STAGE_ACTIVATE, NULL);
+ } else {
+ close(fd_update);
+ close(fd_update_log);
+
+ return 1;
+ }
+ printf("Update finished, return %d\n", ret);
+ }
+
+ close(fd_update);
+
+ if (log_read) {
+ void *p_mmap;
+ int max_data_sz;
+
+ ret = ioctl(fd_update_log, PFRT_LOG_IOC_GET_DATA_INFO, &data_info);
+ if (ret) {
+ perror("Get telemetry data info failed.");
+ close(fd_update_log);
+
+ return 1;
+ }
+
+ max_data_sz = data_info.max_data_size;
+ if (!max_data_sz) {
+ printf("No telemetry data available.\n");
+ close(fd_update_log);
+
+ return 1;
+ }
+
+ log_buf = malloc(max_data_sz + 1);
+ if (!log_buf) {
+ perror("log_buf allocate failed.");
+ close(fd_update_log);
+
+ return 1;
+ }
+
+ p_mmap = mmap(NULL, max_data_sz, PROT_READ, MAP_SHARED, fd_update_log, 0);
+ if (p_mmap == MAP_FAILED) {
+ perror("mmap error.");
+ close(fd_update_log);
+
+ return 1;
+ }
+
+ memcpy(log_buf, p_mmap, max_data_sz);
+ log_buf[max_data_sz] = '\0';
+ printf("%s\n", log_buf);
+ free(log_buf);
+
+ munmap(p_mmap, max_data_sz);
+ }
+
+ close(fd_update_log);
+
+ return 0;
+}